From: Ashok Reddy Soma <ashok.reddy.s...@amd.com>

Read chipselect properties from DT which are populated using 'reg'
property and save it in plat->cs[] array for later use.

Also read multi chipselect capability which is used for
parallel-memories and return errors if they are passed on using DT but
driver is not capable of handling it.

Signed-off-by: Ashok Reddy Soma <ashok.reddy.s...@amd.com>
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbar...@amd.com>
---
 drivers/mtd/spi/sandbox.c    |  2 +-
 drivers/spi/altera_spi.c     |  4 ++--
 drivers/spi/atcspi200_spi.c  |  2 +-
 drivers/spi/ath79_spi.c      |  2 +-
 drivers/spi/atmel_spi.c      |  6 +++---
 drivers/spi/bcm63xx_hsspi.c  | 42 ++++++++++++++++++------------------
 drivers/spi/bcm63xx_spi.c    |  6 +++---
 drivers/spi/bcmbca_hsspi.c   | 34 ++++++++++++++---------------
 drivers/spi/cf_spi.c         |  6 +++---
 drivers/spi/davinci_spi.c    |  8 +++----
 drivers/spi/fsl_dspi.c       | 18 ++++++++--------
 drivers/spi/fsl_espi.c       |  4 ++--
 drivers/spi/fsl_qspi.c       |  4 ++--
 drivers/spi/gxp_spi.c        |  2 +-
 drivers/spi/mpc8xx_spi.c     |  4 ++--
 drivers/spi/mpc8xxx_spi.c    | 10 ++++-----
 drivers/spi/mscc_bb_spi.c    |  4 ++--
 drivers/spi/mxc_spi.c        |  6 +++---
 drivers/spi/npcm_fiu_spi.c   | 14 ++++++------
 drivers/spi/nxp_fspi.c       |  2 +-
 drivers/spi/octeon_spi.c     |  2 +-
 drivers/spi/omap3_spi.c      |  4 ++--
 drivers/spi/pic32_spi.c      |  2 +-
 drivers/spi/rk_spi.c         |  4 ++--
 drivers/spi/rockchip_sfc.c   |  2 +-
 drivers/spi/spi-aspeed-smc.c | 28 ++++++++++++------------
 drivers/spi/spi-mxic.c       |  6 +++---
 drivers/spi/spi-qup.c        |  4 ++--
 drivers/spi/spi-sifive.c     |  6 +++---
 drivers/spi/spi-sn-f-ospi.c  |  2 +-
 drivers/spi/spi-sunxi.c      |  6 +++---
 drivers/spi/spi-synquacer.c  |  4 ++--
 drivers/spi/spi-uclass.c     | 33 +++++++++++++++++++++++-----
 drivers/spi/stm32_qspi.c     |  2 +-
 drivers/spi/stm32_spi.c      |  4 ++--
 drivers/spi/ti_qspi.c        | 14 ++++++------
 drivers/spi/xilinx_spi.c     |  4 ++--
 drivers/spi/zynq_qspi.c      |  6 +++---
 drivers/spi/zynq_spi.c       |  6 +++---
 include/spi.h                |  8 ++++++-
 lib/acpi/acpi_device.c       |  2 +-
 41 files changed, 179 insertions(+), 150 deletions(-)

diff --git a/drivers/mtd/spi/sandbox.c b/drivers/mtd/spi/sandbox.c
index 4fe547171a..72036d5a88 100644
--- a/drivers/mtd/spi/sandbox.c
+++ b/drivers/mtd/spi/sandbox.c
@@ -139,7 +139,7 @@ static int sandbox_sf_probe(struct udevice *dev)
                return ret;
        }
        slave_plat = dev_get_parent_plat(dev);
-       cs = slave_plat->cs;
+       cs = slave_plat->cs[0];
        debug("found at cs %d\n", cs);
 
        if (!pdata->filename) {
diff --git a/drivers/spi/altera_spi.c b/drivers/spi/altera_spi.c
index 989679e881..48782f81c1 100644
--- a/drivers/spi/altera_spi.c
+++ b/drivers/spi/altera_spi.c
@@ -96,7 +96,7 @@ static int altera_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        uint32_t reg, data, start;
 
        debug("%s: bus:%i cs:%i bitlen:%i bytes:%i flags:%lx\n", __func__,
-             dev_seq(bus), slave_plat->cs, bitlen, bytes, flags);
+             dev_seq(bus), slave_plat->cs[0], bitlen, bytes, flags);
 
        if (bitlen == 0)
                goto done;
@@ -111,7 +111,7 @@ static int altera_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
                readl(&regs->rxdata);
 
        if (flags & SPI_XFER_BEGIN)
-               spi_cs_activate(dev, slave_plat->cs);
+               spi_cs_activate(dev, slave_plat->cs[0]);
 
        while (bytes--) {
                if (txp)
diff --git a/drivers/spi/atcspi200_spi.c b/drivers/spi/atcspi200_spi.c
index de9c14837c..acee743653 100644
--- a/drivers/spi/atcspi200_spi.c
+++ b/drivers/spi/atcspi200_spi.c
@@ -321,7 +321,7 @@ static int atcspi200_spi_claim_bus(struct udevice *dev)
        struct udevice *bus = dev->parent;
        struct nds_spi_slave *ns = dev_get_priv(bus);
 
-       if (slave_plat->cs >= ns->num_cs) {
+       if (slave_plat->cs[0] >= ns->num_cs) {
                printf("Invalid SPI chipselect\n");
                return -EINVAL;
        }
diff --git a/drivers/spi/ath79_spi.c b/drivers/spi/ath79_spi.c
index 205567ef54..ad10cec2a6 100644
--- a/drivers/spi/ath79_spi.c
+++ b/drivers/spi/ath79_spi.c
@@ -74,7 +74,7 @@ static int ath79_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        if (restbits)
                bytes++;
 
-       out = AR71XX_SPI_IOC_CS_ALL & ~(AR71XX_SPI_IOC_CS(slave->cs));
+       out = AR71XX_SPI_IOC_CS_ALL & ~(AR71XX_SPI_IOC_CS(slave->cs[0]));
        while (bytes > 0) {
                bytes--;
                curbyte = 0;
diff --git a/drivers/spi/atmel_spi.c b/drivers/spi/atmel_spi.c
index aec6f4eca9..e2de39d1ef 100644
--- a/drivers/spi/atmel_spi.c
+++ b/drivers/spi/atmel_spi.c
@@ -126,7 +126,7 @@ static int atmel_spi_claim_bus(struct udevice *dev)
        struct atmel_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
        struct at91_spi *reg_base = bus_plat->regs;
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
        u32 freq = priv->freq;
        u32 scbr, csrx, mode;
 
@@ -175,7 +175,7 @@ static void atmel_spi_cs_activate(struct udevice *dev)
        struct udevice *bus = dev_get_parent(dev);
        struct atmel_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
 
        if (!dm_gpio_is_valid(&priv->cs_gpios[cs]))
                return;
@@ -190,7 +190,7 @@ static void atmel_spi_cs_deactivate(struct udevice *dev)
        struct udevice *bus = dev_get_parent(dev);
        struct atmel_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
 
        if (!dm_gpio_is_valid(&priv->cs_gpios[cs]))
                return;
diff --git a/drivers/spi/bcm63xx_hsspi.c b/drivers/spi/bcm63xx_hsspi.c
index a24bb430cb..9614a7f536 100644
--- a/drivers/spi/bcm63xx_hsspi.c
+++ b/drivers/spi/bcm63xx_hsspi.c
@@ -175,7 +175,7 @@ static void bcm63xx_hsspi_activate_cs(struct 
bcm63xx_hsspi_priv *priv,
        set = DIV_ROUND_UP(2048, set);
        set &= SPI_PFL_CLK_FREQ_MASK;
        set |= SPI_PFL_CLK_RSTLOOP_MASK;
-       writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs));
+       writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs[0]));
 
        /* profile signal */
        set = 0;
@@ -193,29 +193,29 @@ static void bcm63xx_hsspi_activate_cs(struct 
bcm63xx_hsspi_priv *priv,
        if (speed > SPI_MAX_SYNC_CLOCK)
                set |= SPI_PFL_SIG_ASYNCIN_MASK;
 
-       clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set);
+       clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs[0]), clr, set);
 
        /* global control */
        set = 0;
        clr = 0;
 
        if (priv->xfer_mode == HSSPI_XFER_MODE_PREPEND) {
-               if (priv->cs_pols & BIT(plat->cs))
-                       set |= BIT(plat->cs);
+               if (priv->cs_pols & BIT(plat->cs[0]))
+                       set |= BIT(plat->cs[0]);
                else
-                       clr |= BIT(plat->cs);
+                       clr |= BIT(plat->cs[0]);
        } else {
                /* invert cs polarity */
-               if (priv->cs_pols & BIT(plat->cs))
-                       clr |= BIT(plat->cs);
+               if (priv->cs_pols & BIT(plat->cs[0]))
+                       clr |= BIT(plat->cs[0]);
                else
-                       set |= BIT(plat->cs);
+                       set |= BIT(plat->cs[0]);
 
                /* invert dummy cs polarity */
-               if (priv->cs_pols & BIT(!plat->cs))
-                       clr |= BIT(!plat->cs);
+               if (priv->cs_pols & BIT(!plat->cs[0]))
+                       clr |= BIT(!plat->cs[0]);
                else
-                       set |= BIT(!plat->cs);
+                       set |= BIT(!plat->cs[0]);
        }
 
        clrsetbits_32(priv->regs + SPI_CTL_REG, clr, set);
@@ -291,7 +291,7 @@ static int bcm63xx_hsspi_xfer_dummy_cs(struct udevice *dev, 
unsigned int data_by
 
        if (plat->mode & SPI_3WIRE)
                val |= SPI_PFL_MODE_3WIRE_MASK;
-       writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs));
+       writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs[0]));
 
        /* transfer loop */
        while (data_bytes > 0) {
@@ -311,9 +311,9 @@ static int bcm63xx_hsspi_xfer_dummy_cs(struct udevice *dev, 
unsigned int data_by
 
                /* issue the transfer */
                val = SPI_CMD_OP_START;
-               val |= (plat->cs << SPI_CMD_PFL_SHIFT) &
+               val |= (plat->cs[0] << SPI_CMD_PFL_SHIFT) &
                       SPI_CMD_PFL_MASK;
-               val |= (!plat->cs << SPI_CMD_SLAVE_SHIFT) &
+               val |= (!plat->cs[0] << SPI_CMD_SLAVE_SHIFT) &
                       SPI_CMD_SLAVE_MASK;
                writel(val, priv->regs + SPI_CMD_REG);
 
@@ -451,7 +451,7 @@ static int bcm63xx_hsspi_xfer_prepend(struct udevice *dev, 
unsigned int data_byt
                        }
                }
                val |= (priv->prepend_cnt << SPI_PFL_MODE_PREPCNT_SHIFT);
-               writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs));
+               writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs[0]));
 
                /* set fifo operation */
                val = opcode | (data_bytes & HSSPI_FIFO_OP_BYTES_MASK);
@@ -460,9 +460,9 @@ static int bcm63xx_hsspi_xfer_prepend(struct udevice *dev, 
unsigned int data_byt
 
                /* issue the transfer */
                val = SPI_CMD_OP_START;
-               val |= (plat->cs << SPI_CMD_PFL_SHIFT) &
+               val |= (plat->cs[0] << SPI_CMD_PFL_SHIFT) &
                       SPI_CMD_PFL_MASK;
-               val |= (plat->cs << SPI_CMD_SLAVE_SHIFT) &
+               val |= (plat->cs[0] << SPI_CMD_SLAVE_SHIFT) &
                       SPI_CMD_SLAVE_MASK;
                writel(val, priv->regs + SPI_CMD_REG);
 
@@ -538,16 +538,16 @@ static int bcm63xx_hsspi_child_pre_probe(struct udevice 
*dev)
        struct spi_slave *slave = dev_get_parent_priv(dev);
 
        /* check cs */
-       if (plat->cs >= priv->num_cs) {
-               printf("no cs %u\n", plat->cs);
+       if (plat->cs[0] >= priv->num_cs) {
+               printf("no cs %u\n", plat->cs[0]);
                return -ENODEV;
        }
 
        /* cs polarity */
        if (plat->mode & SPI_CS_HIGH)
-               priv->cs_pols |= BIT(plat->cs);
+               priv->cs_pols |= BIT(plat->cs[0]);
        else
-               priv->cs_pols &= ~BIT(plat->cs);
+               priv->cs_pols &= ~BIT(plat->cs[0]);
 
        /*
         * set the max read/write size to make sure each xfer are within the
diff --git a/drivers/spi/bcm63xx_spi.c b/drivers/spi/bcm63xx_spi.c
index 0600d56c69..82bccf09ee 100644
--- a/drivers/spi/bcm63xx_spi.c
+++ b/drivers/spi/bcm63xx_spi.c
@@ -276,7 +276,7 @@ static int bcm63xx_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
 
                /* issue the transfer */
                cmd = SPI_CMD_OP_START;
-               cmd |= (plat->cs << SPI_CMD_SLAVE_SHIFT) & SPI_CMD_SLAVE_MASK;
+               cmd |= (plat->cs[0] << SPI_CMD_SLAVE_SHIFT) & 
SPI_CMD_SLAVE_MASK;
                cmd |= (priv->tx_bytes << SPI_CMD_PREPEND_SHIFT);
                if (plat->mode & SPI_3WIRE)
                        cmd |= SPI_CMD_3WIRE_MASK;
@@ -354,8 +354,8 @@ static int bcm63xx_spi_child_pre_probe(struct udevice *dev)
        struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev);
 
        /* check cs */
-       if (plat->cs >= priv->num_cs) {
-               printf("no cs %u\n", plat->cs);
+       if (plat->cs[0] >= priv->num_cs) {
+               printf("no cs %u\n", plat->cs[0]);
                return -ENODEV;
        }
 
diff --git a/drivers/spi/bcmbca_hsspi.c b/drivers/spi/bcmbca_hsspi.c
index fbe315a7d4..cc3a5185c9 100644
--- a/drivers/spi/bcmbca_hsspi.c
+++ b/drivers/spi/bcmbca_hsspi.c
@@ -156,7 +156,7 @@ static void bcmbca_hsspi_setup_clock(struct 
bcmbca_hsspi_priv *priv,
        set = DIV_ROUND_UP(2048, set);
        set &= SPI_PFL_CLK_FREQ_MASK;
        set |= SPI_PFL_CLK_RSTLOOP_MASK;
-       writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs));
+       writel(set, priv->regs + SPI_PFL_CLK_REG(plat->cs[0]));
 
        /* profile signal */
        set = 0;
@@ -174,16 +174,16 @@ static void bcmbca_hsspi_setup_clock(struct 
bcmbca_hsspi_priv *priv,
        if (priv->speed > SPI_MAX_SYNC_CLOCK)
                set |= SPI_PFL_SIG_ASYNCIN_MASK;
 
-       clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs), clr, set);
+       clrsetbits_32(priv->regs + SPI_PFL_SIG_REG(plat->cs[0]), clr, set);
 
        /* global control */
        set = 0;
        clr = 0;
 
-       if (priv->cs_pols & BIT(plat->cs))
-               set |= BIT(plat->cs);
+       if (priv->cs_pols & BIT(plat->cs[0]))
+               set |= BIT(plat->cs[0]);
        else
-               clr |= BIT(plat->cs);
+               clr |= BIT(plat->cs[0]);
 
        clrsetbits_32(priv->regs + SPI_CTL_REG, clr, set);
 }
@@ -195,7 +195,7 @@ static void bcmbca_hsspi_activate_cs(struct 
bcmbca_hsspi_priv *priv,
 
        /* set the override bit */
        val = readl(priv->spim_ctrl);
-       val |= BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
+       val |= BIT(plat->cs[0] + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
        writel(val, priv->spim_ctrl);
 }
 
@@ -206,7 +206,7 @@ static void bcmbca_hsspi_deactivate_cs(struct 
bcmbca_hsspi_priv *priv,
 
        /* clear the cs override bit */
        val = readl(priv->spim_ctrl);
-       val &= ~BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
+       val &= ~BIT(plat->cs[0] + SPIM_CTRL_CS_OVERRIDE_SEL_SHIFT);
        writel(val, priv->spim_ctrl);
 }
 
@@ -251,7 +251,7 @@ static int bcmbca_hsspi_xfer(struct udevice *dev, unsigned 
int bitlen,
 
        if (plat->mode & SPI_3WIRE)
                val |= SPI_PFL_MODE_3WIRE_MASK;
-       writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs));
+       writel(val, priv->regs + SPI_PFL_MODE_REG(plat->cs[0]));
 
        /* transfer loop */
        while (data_bytes > 0) {
@@ -277,9 +277,9 @@ static int bcmbca_hsspi_xfer(struct udevice *dev, unsigned 
int bitlen,
 
                /* issue the transfer */
                val = SPI_CMD_OP_START;
-               val |= (plat->cs << SPI_CMD_PFL_SHIFT) &
+               val |= (plat->cs[0] << SPI_CMD_PFL_SHIFT) &
                          SPI_CMD_PFL_MASK;
-               val |= (plat->cs << SPI_CMD_SLAVE_SHIFT) &
+               val |= (plat->cs[0] << SPI_CMD_SLAVE_SHIFT) &
                          SPI_CMD_SLAVE_MASK;
                writel(val, priv->regs + SPI_CMD_REG);
 
@@ -327,22 +327,22 @@ static int bcmbca_hsspi_child_pre_probe(struct udevice 
*dev)
        u32 val;
 
        /* check cs */
-       if (plat->cs >= priv->num_cs) {
-               dev_err(dev, "no cs %u\n", plat->cs);
+       if (plat->cs[0] >= priv->num_cs) {
+               dev_err(dev, "no cs %u\n", plat->cs[0]);
                return -EINVAL;
        }
 
        /* cs polarity */
        if (plat->mode & SPI_CS_HIGH)
-               priv->cs_pols |= BIT(plat->cs);
+               priv->cs_pols |= BIT(plat->cs[0]);
        else
-               priv->cs_pols &= ~BIT(plat->cs);
+               priv->cs_pols &= ~BIT(plat->cs[0]);
 
        /* set the polarity to spim cs register */
        val = readl(priv->spim_ctrl);
-       val &= ~BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
-       if (priv->cs_pols & BIT(plat->cs))
-               val |= BIT(plat->cs + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
+       val &= ~BIT(plat->cs[0] + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
+       if (priv->cs_pols & BIT(plat->cs[0]))
+               val |= BIT(plat->cs[0] + SPIM_CTRL_CS_OVERRIDE_VAL_SHIFT);
        writel(val, priv->spim_ctrl);
 
        return 0;
diff --git a/drivers/spi/cf_spi.c b/drivers/spi/cf_spi.c
index 1a841b5dce..9df1d690c0 100644
--- a/drivers/spi/cf_spi.c
+++ b/drivers/spi/cf_spi.c
@@ -124,7 +124,7 @@ static int coldfire_spi_claim_bus(struct udevice *dev)
        /* Clear FIFO and resume transfer */
        clrbits_be32(&dspi->mcr, DSPI_MCR_CTXF | DSPI_MCR_CRXF);
 
-       dspi_chip_select(slave_plat->cs);
+       dspi_chip_select(slave_plat->cs[0]);
 
        return 0;
 }
@@ -140,7 +140,7 @@ static int coldfire_spi_release_bus(struct udevice *dev)
        /* Clear FIFO */
        clrbits_be32(&dspi->mcr, DSPI_MCR_CTXF | DSPI_MCR_CRXF);
 
-       dspi_chip_unselect(slave_plat->cs);
+       dspi_chip_unselect(slave_plat->cs[0]);
 
        return 0;
 }
@@ -169,7 +169,7 @@ static int coldfire_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
        if ((flags & SPI_XFER_BEGIN) == SPI_XFER_BEGIN)
                ctrl |= DSPI_TFR_CONT;
 
-       ctrl = setup_ctrl(ctrl, slave_plat->cs);
+       ctrl = setup_ctrl(ctrl, slave_plat->cs[0]);
 
        if (len > 1) {
                int tmp_len = len - 1;
diff --git a/drivers/spi/davinci_spi.c b/drivers/spi/davinci_spi.c
index 25f5e9fdeb..d85fe91c75 100644
--- a/drivers/spi/davinci_spi.c
+++ b/drivers/spi/davinci_spi.c
@@ -339,13 +339,13 @@ static int davinci_spi_claim_bus(struct udevice *dev)
        struct udevice *bus = dev->parent;
        struct davinci_spi_slave *ds = dev_get_priv(bus);
 
-       if (slave_plat->cs >= ds->num_cs) {
+       if (slave_plat->cs[0] >= ds->num_cs) {
                printf("Invalid SPI chipselect\n");
                return -EINVAL;
        }
        ds->half_duplex = slave_plat->mode & SPI_PREAMBLE;
 
-       return __davinci_spi_claim_bus(ds, slave_plat->cs);
+       return __davinci_spi_claim_bus(ds, slave_plat->cs[0]);
 }
 
 static int davinci_spi_release_bus(struct udevice *dev)
@@ -364,11 +364,11 @@ static int davinci_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
        struct udevice *bus = dev->parent;
        struct davinci_spi_slave *ds = dev_get_priv(bus);
 
-       if (slave->cs >= ds->num_cs) {
+       if (slave->cs[0] >= ds->num_cs) {
                printf("Invalid SPI chipselect\n");
                return -EINVAL;
        }
-       ds->cur_cs = slave->cs;
+       ds->cur_cs = slave->cs[0];
 
        return __davinci_spi_xfer(ds, bitlen, dout, din, flags);
 }
diff --git a/drivers/spi/fsl_dspi.c b/drivers/spi/fsl_dspi.c
index f8ec268812..83d56ce9ba 100644
--- a/drivers/spi/fsl_dspi.c
+++ b/drivers/spi/fsl_dspi.c
@@ -456,9 +456,9 @@ static int fsl_dspi_child_pre_probe(struct udevice *dev)
        unsigned char pcssck = 0, cssck = 0;
        unsigned char pasc = 0, asc = 0;
 
-       if (slave_plat->cs >= priv->num_chipselect) {
+       if (slave_plat->cs[0] >= priv->num_chipselect) {
                debug("DSPI invalid chipselect number %d(max %d)!\n",
-                     slave_plat->cs, priv->num_chipselect - 1);
+                     slave_plat->cs[0], priv->num_chipselect - 1);
                return -EINVAL;
        }
 
@@ -473,12 +473,12 @@ static int fsl_dspi_child_pre_probe(struct udevice *dev)
        /* Set After SCK delay scale values */
        ns_delay_scale(&pasc, &asc, sck_cs_delay, priv->bus_clk);
 
-       priv->ctar_val[slave_plat->cs] = DSPI_CTAR_DEFAULT_VALUE |
+       priv->ctar_val[slave_plat->cs[0]] = DSPI_CTAR_DEFAULT_VALUE |
                                         DSPI_CTAR_PCSSCK(pcssck) |
                                         DSPI_CTAR_PASC(pasc);
 
        debug("DSPI pre_probe slave device on CS %u, max_hz %u, mode 0x%x.\n",
-             slave_plat->cs, slave_plat->max_hz, slave_plat->mode);
+             slave_plat->cs[0], slave_plat->max_hz, slave_plat->mode);
 
        return 0;
 }
@@ -531,13 +531,13 @@ static int fsl_dspi_claim_bus(struct udevice *dev)
        priv = dev_get_priv(bus);
 
        /* processor special preparation work */
-       cpu_dspi_claim_bus(dev_seq(bus), slave_plat->cs);
+       cpu_dspi_claim_bus(dev_seq(bus), slave_plat->cs[0]);
 
        /* configure transfer mode */
-       fsl_dspi_cfg_ctar_mode(priv, slave_plat->cs, priv->mode);
+       fsl_dspi_cfg_ctar_mode(priv, slave_plat->cs[0], priv->mode);
 
        /* configure active state of CSX */
-       fsl_dspi_cfg_cs_active_state(priv, slave_plat->cs,
+       fsl_dspi_cfg_cs_active_state(priv, slave_plat->cs[0],
                                     priv->mode);
 
        fsl_dspi_clr_fifo(priv);
@@ -563,7 +563,7 @@ static int fsl_dspi_release_bus(struct udevice *dev)
        dspi_halt(priv, 1);
 
        /* processor special release work */
-       cpu_dspi_release_bus(dev_seq(bus), slave_plat->cs);
+       cpu_dspi_release_bus(dev_seq(bus), slave_plat->cs[0]);
 
        return 0;
 }
@@ -619,7 +619,7 @@ static int fsl_dspi_xfer(struct udevice *dev, unsigned int 
bitlen,
        bus = dev->parent;
        priv = dev_get_priv(bus);
 
-       return dspi_xfer(priv, slave_plat->cs, bitlen, dout, din, flags);
+       return dspi_xfer(priv, slave_plat->cs[0], bitlen, dout, din, flags);
 }
 
 static int fsl_dspi_set_speed(struct udevice *bus, uint speed)
diff --git a/drivers/spi/fsl_espi.c b/drivers/spi/fsl_espi.c
index b1d964d79d..76f219be6c 100644
--- a/drivers/spi/fsl_espi.c
+++ b/drivers/spi/fsl_espi.c
@@ -513,8 +513,8 @@ static int fsl_espi_child_pre_probe(struct udevice *dev)
        struct udevice *bus = dev->parent;
        struct fsl_spi_slave *fsl = dev_get_priv(bus);
 
-       debug("%s cs %u\n", __func__, slave_plat->cs);
-       fsl->cs = slave_plat->cs;
+       debug("%s cs %u\n", __func__, slave_plat->cs[0]);
+       fsl->cs = slave_plat->cs[0];
 
        return 0;
 }
diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
index 3f97730bad..207caa21c3 100644
--- a/drivers/spi/fsl_qspi.c
+++ b/drivers/spi/fsl_qspi.c
@@ -511,10 +511,10 @@ static void fsl_qspi_select_mem(struct fsl_qspi *q, 
struct spi_slave *slave)
        struct dm_spi_slave_plat *plat =
                dev_get_parent_plat(slave->dev);
 
-       if (q->selected == plat->cs)
+       if (q->selected == plat->cs[0])
                return;
 
-       q->selected = plat->cs;
+       q->selected = plat->cs[0];
        fsl_qspi_invalidate(q);
 }
 
diff --git a/drivers/spi/gxp_spi.c b/drivers/spi/gxp_spi.c
index 70d76ac66a..3ee369c5a0 100644
--- a/drivers/spi/gxp_spi.c
+++ b/drivers/spi/gxp_spi.c
@@ -87,7 +87,7 @@ static int gxp_spi_xfer(struct udevice *dev, unsigned int 
bitlen, const void *do
                value = readl(priv->base + OFFSET_SPIMCFG);
                value &= ~(1 << 24);
                /* set chipselect */
-               value |= (slave_plat->cs << 24);
+               value |= (slave_plat->cs[0] << 24);
 
                /* addr reg and addr size */
                if (len >= 4) {
diff --git a/drivers/spi/mpc8xx_spi.c b/drivers/spi/mpc8xx_spi.c
index 5c8d760935..58d8f46e7a 100644
--- a/drivers/spi/mpc8xx_spi.c
+++ b/drivers/spi/mpc8xx_spi.c
@@ -134,7 +134,7 @@ static void mpc8xx_spi_cs_activate(struct udevice *dev)
        struct mpc8xx_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *platdata = dev_get_parent_plat(dev);
 
-       dm_gpio_set_value(&priv->gpios[platdata->cs], 1);
+       dm_gpio_set_value(&priv->gpios[platdata->cs[0]], 1);
 }
 
 static void mpc8xx_spi_cs_deactivate(struct udevice *dev)
@@ -142,7 +142,7 @@ static void mpc8xx_spi_cs_deactivate(struct udevice *dev)
        struct mpc8xx_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *platdata = dev_get_parent_plat(dev);
 
-       dm_gpio_set_value(&priv->gpios[platdata->cs], 0);
+       dm_gpio_set_value(&priv->gpios[platdata->cs[0]], 0);
 }
 
 static int mpc8xx_spi_xfer(struct udevice *dev, unsigned int bitlen,
diff --git a/drivers/spi/mpc8xxx_spi.c b/drivers/spi/mpc8xxx_spi.c
index 7d15390c56..d219bcbc4e 100644
--- a/drivers/spi/mpc8xxx_spi.c
+++ b/drivers/spi/mpc8xxx_spi.c
@@ -114,7 +114,7 @@ static void mpc8xxx_spi_cs_activate(struct udevice *dev)
        struct mpc8xxx_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev);
 
-       dm_gpio_set_value(&priv->gpios[plat->cs], 1);
+       dm_gpio_set_value(&priv->gpios[plat->cs[0]], 1);
 }
 
 static void mpc8xxx_spi_cs_deactivate(struct udevice *dev)
@@ -122,7 +122,7 @@ static void mpc8xxx_spi_cs_deactivate(struct udevice *dev)
        struct mpc8xxx_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev);
 
-       dm_gpio_set_value(&priv->gpios[plat->cs], 0);
+       dm_gpio_set_value(&priv->gpios[plat->cs[0]], 0);
 }
 
 static int mpc8xxx_spi_xfer(struct udevice *dev, uint bitlen,
@@ -138,10 +138,10 @@ static int mpc8xxx_spi_xfer(struct udevice *dev, uint 
bitlen,
        ulong type = dev_get_driver_data(bus);
 
        debug("%s: slave %s:%u dout %08X din %08X bitlen %u\n", __func__,
-             bus->name, plat->cs, (uint)dout, (uint)din, bitlen);
-       if (plat->cs >= priv->cs_count) {
+             bus->name, plat->cs[0], (uint)dout, (uint)din, bitlen);
+       if (plat->cs[0] >= priv->cs_count) {
                dev_err(dev, "chip select index %d too large (cs_count=%d)\n",
-                       plat->cs, priv->cs_count);
+                       plat->cs[0], priv->cs_count);
                return -EINVAL;
        }
        if (bitlen % 8) {
diff --git a/drivers/spi/mscc_bb_spi.c b/drivers/spi/mscc_bb_spi.c
index 95bea0da1b..b0150a60eb 100644
--- a/drivers/spi/mscc_bb_spi.c
+++ b/drivers/spi/mscc_bb_spi.c
@@ -124,11 +124,11 @@ int mscc_bb_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        u8              *rxd = din;
 
        debug("spi_xfer: slave %s:%s cs%d mode %d, dout %p din %p bitlen %u\n",
-             dev->parent->name, dev->name, plat->cs,  plat->mode, dout,
+             dev->parent->name, dev->name, plat->cs[0],  plat->mode, dout,
              din, bitlen);
 
        if (flags & SPI_XFER_BEGIN)
-               mscc_bb_spi_cs_activate(priv, plat->mode, plat->cs);
+               mscc_bb_spi_cs_activate(priv, plat->mode, plat->cs[0]);
 
        count = bitlen / 8;
        for (i = 0; i < count; i++) {
diff --git a/drivers/spi/mxc_spi.c b/drivers/spi/mxc_spi.c
index 33360a1832..8baae075f8 100644
--- a/drivers/spi/mxc_spi.c
+++ b/drivers/spi/mxc_spi.c
@@ -135,7 +135,7 @@ static void mxc_spi_cs_activate(struct mxc_spi_slave *mxcs)
        struct udevice *dev = mxcs->dev;
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
 
        if (!dm_gpio_is_valid(&mxcs->cs_gpios[cs]))
                return;
@@ -153,7 +153,7 @@ static void mxc_spi_cs_deactivate(struct mxc_spi_slave 
*mxcs)
        struct udevice *dev = mxcs->dev;
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
 
        if (!dm_gpio_is_valid(&mxcs->cs_gpios[cs]))
                return;
@@ -633,7 +633,7 @@ static int mxc_spi_claim_bus(struct udevice *dev)
 
        mxcs->dev = dev;
 
-       return mxc_spi_claim_bus_internal(mxcs, slave_plat->cs);
+       return mxc_spi_claim_bus_internal(mxcs, slave_plat->cs[0]);
 }
 
 static int mxc_spi_release_bus(struct udevice *dev)
diff --git a/drivers/spi/npcm_fiu_spi.c b/drivers/spi/npcm_fiu_spi.c
index 73c506442a..7b8271c8bb 100644
--- a/drivers/spi/npcm_fiu_spi.c
+++ b/drivers/spi/npcm_fiu_spi.c
@@ -203,7 +203,7 @@ static int npcm_fiu_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
        int len;
 
        if (flags & SPI_XFER_BEGIN)
-               activate_cs(regs, slave_plat->cs);
+               activate_cs(regs, slave_plat->cs[0]);
 
        while (bytes) {
                len = (bytes > CHUNK_SIZE) ? CHUNK_SIZE : bytes;
@@ -222,7 +222,7 @@ static int npcm_fiu_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
        }
 
        if (flags & SPI_XFER_END)
-               deactivate_cs(regs, slave_plat->cs);
+               deactivate_cs(regs, slave_plat->cs[0]);
 
        return ret;
 }
@@ -325,9 +325,9 @@ static int npcm_fiu_exec_op(struct spi_slave *slave,
        bytes = op->data.nbytes;
        addr = (u32)op->addr.val;
        if (!bytes) {
-               activate_cs(regs, slave_plat->cs);
+               activate_cs(regs, slave_plat->cs[0]);
                ret = npcm_fiu_uma_operation(priv, op, addr, NULL, NULL, 0, 
false);
-               deactivate_cs(regs, slave_plat->cs);
+               deactivate_cs(regs, slave_plat->cs[0]);
                return ret;
        }
 
@@ -339,9 +339,9 @@ static int npcm_fiu_exec_op(struct spi_slave *slave,
         * Use HW-control CS for read to avoid clock and timing issues.
         */
        if (op->data.dir == SPI_MEM_DATA_OUT)
-               activate_cs(regs, slave_plat->cs);
+               activate_cs(regs, slave_plat->cs[0]);
        else
-               writel(FIELD_PREP(UMA_CTS_DEV_NUM_MASK, slave_plat->cs) | 
UMA_CTS_SW_CS,
+               writel(FIELD_PREP(UMA_CTS_DEV_NUM_MASK, slave_plat->cs[0]) | 
UMA_CTS_SW_CS,
                       &regs->uma_cts);
        while (bytes) {
                len = (bytes > CHUNK_SIZE) ? CHUNK_SIZE : bytes;
@@ -361,7 +361,7 @@ static int npcm_fiu_exec_op(struct spi_slave *slave,
                        rx += len;
        }
        if (op->data.dir == SPI_MEM_DATA_OUT)
-               deactivate_cs(regs, slave_plat->cs);
+               deactivate_cs(regs, slave_plat->cs[0]);
 
        return 0;
 }
diff --git a/drivers/spi/nxp_fspi.c b/drivers/spi/nxp_fspi.c
index 5db27f9ae2..b8f8040614 100644
--- a/drivers/spi/nxp_fspi.c
+++ b/drivers/spi/nxp_fspi.c
@@ -963,7 +963,7 @@ static int nxp_fspi_claim_bus(struct udevice *dev)
        bus = dev->parent;
        f = dev_get_priv(bus);
 
-       nxp_fspi_select_mem(f, slave_plat->cs);
+       nxp_fspi_select_mem(f, slave_plat->cs[0]);
 
        return 0;
 }
diff --git a/drivers/spi/octeon_spi.c b/drivers/spi/octeon_spi.c
index 4bc38beaa6..0e6e0f7dbe 100644
--- a/drivers/spi/octeon_spi.c
+++ b/drivers/spi/octeon_spi.c
@@ -93,7 +93,7 @@ static u64 octeon_spi_set_mpicfg(struct udevice *dev)
        if (max_speed > OCTEON_SPI_MAX_CLOCK_HZ)
                max_speed = OCTEON_SPI_MAX_CLOCK_HZ;
 
-       debug("\n slave params %d %d %d\n", slave->cs,
+       debug("\n slave params %d %d %d\n", slave->cs[0],
              slave->max_hz, slave->mode);
        cpha = !!(slave->mode & SPI_CPHA);
        cpol = !!(slave->mode & SPI_CPOL);
diff --git a/drivers/spi/omap3_spi.c b/drivers/spi/omap3_spi.c
index 5cce6baa62..92ebd9ea79 100644
--- a/drivers/spi/omap3_spi.c
+++ b/drivers/spi/omap3_spi.c
@@ -393,7 +393,7 @@ static int omap3_spi_claim_bus(struct udevice *dev)
        struct omap3_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       priv->cs = slave_plat->cs;
+       priv->cs = slave_plat->cs[0];
        if (!priv->freq)
                priv->freq = slave_plat->max_hz;
 
@@ -422,7 +422,7 @@ static int omap3_spi_set_wordlen(struct udevice *dev, 
unsigned int wordlen)
        struct omap3_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       priv->cs = slave_plat->cs;
+       priv->cs = slave_plat->cs[0];
        priv->wordlen = wordlen;
        _omap3_spi_set_wordlen(priv);
 
diff --git a/drivers/spi/pic32_spi.c b/drivers/spi/pic32_spi.c
index 45f07f083d..aed18f46e3 100644
--- a/drivers/spi/pic32_spi.c
+++ b/drivers/spi/pic32_spi.c
@@ -248,7 +248,7 @@ static int pic32_spi_xfer(struct udevice *slave, unsigned 
int bitlen,
        slave_plat = dev_get_parent_plat(slave);
 
        debug("spi_xfer: bus:%i cs:%i flags:%lx\n",
-             dev_seq(bus), slave_plat->cs, flags);
+             dev_seq(bus), slave_plat->cs[0], flags);
        debug("msg tx %p, rx %p submitted of %d byte(s)\n",
              tx_buf, rx_buf, len);
 
diff --git a/drivers/spi/rk_spi.c b/drivers/spi/rk_spi.c
index 7de943356a..bedc63b66d 100644
--- a/drivers/spi/rk_spi.c
+++ b/drivers/spi/rk_spi.c
@@ -445,7 +445,7 @@ static int rockchip_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
 
        /* Assert CS before transfer */
        if (flags & SPI_XFER_BEGIN)
-               spi_cs_activate(dev, slave_plat->cs);
+               spi_cs_activate(dev, slave_plat->cs[0]);
 
        /*
         * To ensure fast loading of firmware images (e.g. full U-Boot
@@ -498,7 +498,7 @@ static int rockchip_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
 
        /* Deassert CS after transfer */
        if (flags & SPI_XFER_END)
-               spi_cs_deactivate(dev, slave_plat->cs);
+               spi_cs_deactivate(dev, slave_plat->cs[0]);
 
        rkspi_enable_chip(regs, false);
 
diff --git a/drivers/spi/rockchip_sfc.c b/drivers/spi/rockchip_sfc.c
index 596c22aa01..71e9b707e8 100644
--- a/drivers/spi/rockchip_sfc.c
+++ b/drivers/spi/rockchip_sfc.c
@@ -409,7 +409,7 @@ static int rockchip_sfc_xfer_setup(struct rockchip_sfc *sfc,
 
        /* set the Controller */
        ctrl |= SFC_CTRL_PHASE_SEL_NEGETIVE;
-       cmd |= plat->cs << SFC_CMD_CS_SHIFT;
+       cmd |= plat->cs[0] << SFC_CMD_CS_SHIFT;
 
        dev_dbg(sfc->dev, "sfc addr.nbytes=%x(x%d) dummy.nbytes=%x(x%d)\n",
                op->addr.nbytes, op->addr.buswidth,
diff --git a/drivers/spi/spi-aspeed-smc.c b/drivers/spi/spi-aspeed-smc.c
index 3962031021..56c8a67da8 100644
--- a/drivers/spi/spi-aspeed-smc.c
+++ b/drivers/spi/spi-aspeed-smc.c
@@ -193,7 +193,7 @@ static u32 ast2400_get_clk_setting(struct udevice *dev, 
uint max_hz)
 
        if (found) {
                hclk_div = hclk_masks[i] << 8;
-               priv->flashes[slave_plat->cs].max_freq = hclk_clk / (i + 1);
+               priv->flashes[slave_plat->cs[0]].max_freq = hclk_clk / (i + 1);
        }
 
        dev_dbg(dev, "found: %s, hclk: %d, max_clk: %d\n", found ? "yes" : "no",
@@ -201,7 +201,7 @@ static u32 ast2400_get_clk_setting(struct udevice *dev, 
uint max_hz)
 
        if (found) {
                dev_dbg(dev, "h_div: %d (mask %x), speed: %d\n",
-                       i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs].max_freq);
+                       i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs[0]].max_freq);
        }
 
        return hclk_div;
@@ -312,7 +312,7 @@ static u32 ast2500_get_clk_setting(struct udevice *dev, 
uint max_hz)
        for (i = 0; i < ARRAY_SIZE(hclk_masks); i++) {
                if (hclk_clk / (i + 1) <= max_hz) {
                        found = true;
-                       priv->flashes[slave_plat->cs].max_freq =
+                       priv->flashes[slave_plat->cs[0]].max_freq =
                                                        hclk_clk / (i + 1);
                        break;
                }
@@ -326,7 +326,7 @@ static u32 ast2500_get_clk_setting(struct udevice *dev, 
uint max_hz)
        for (i = 0; i < ARRAY_SIZE(hclk_masks); i++) {
                if (hclk_clk / ((i + 1) * 4) <= max_hz) {
                        found = true;
-                       priv->flashes[slave_plat->cs].max_freq =
+                       priv->flashes[slave_plat->cs[0]].max_freq =
                                                hclk_clk / ((i + 1) * 4);
                        break;
                }
@@ -341,7 +341,7 @@ end:
 
        if (found) {
                dev_dbg(dev, "h_div: %d (mask %x), speed: %d\n",
-                       i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs].max_freq);
+                       i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs[0]].max_freq);
        }
 
        return hclk_div;
@@ -457,7 +457,7 @@ static u32 ast2600_get_clk_setting(struct udevice *dev, 
uint max_hz)
 
                if (found) {
                        hclk_div = ((j << 24) | hclk_masks[i] << 8);
-                       priv->flashes[slave_plat->cs].max_freq =
+                       priv->flashes[slave_plat->cs[0]].max_freq =
                                                hclk_clk / (i + 1 + j * 16);
                        break;
                }
@@ -468,7 +468,7 @@ static u32 ast2600_get_clk_setting(struct udevice *dev, 
uint max_hz)
 
        if (found) {
                dev_dbg(dev, "base_clk: %d, h_div: %d (mask %x), speed: %d\n",
-                       j, i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs].max_freq);
+                       j, i + 1, hclk_masks[i], 
priv->flashes[slave_plat->cs[0]].max_freq);
        }
 
        return hclk_div;
@@ -589,7 +589,7 @@ static int aspeed_spi_exec_op_user_mode(struct spi_slave 
*slave,
        struct udevice *bus = dev->parent;
        struct aspeed_spi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(slave->dev);
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
        u32 ce_ctrl_reg = (u32)&priv->regs->ce_ctrl[cs];
        u32 ce_ctrl_val;
        struct aspeed_spi_flash *flash = &priv->flashes[cs];
@@ -669,7 +669,7 @@ static int aspeed_spi_dirmap_create(struct 
spi_mem_dirmap_desc *desc)
        const struct aspeed_spi_info *info = priv->info;
        struct spi_mem_op op_tmpl = desc->info.op_tmpl;
        u32 i;
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
        u32 cmd_io_conf;
        u32 ce_ctrl_reg;
 
@@ -726,7 +726,7 @@ static ssize_t aspeed_spi_dirmap_read(struct 
spi_mem_dirmap_desc *desc,
        struct udevice *dev = desc->slave->dev;
        struct aspeed_spi_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
        int ret;
 
        dev_dbg(dev, "read op:0x%x, addr:0x%llx, len:0x%x\n",
@@ -751,7 +751,7 @@ static struct aspeed_spi_flash *aspeed_spi_get_flash(struct 
udevice *dev)
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
        struct aspeed_spi_plat *plat = dev_get_plat(bus);
        struct aspeed_spi_priv *priv = dev_get_priv(bus);
-       u32 cs = slave_plat->cs;
+       u32 cs = slave_plat->cs[0];
 
        if (cs >= plat->max_cs) {
                dev_err(dev, "invalid CS %u\n", cs);
@@ -1070,10 +1070,10 @@ static int aspeed_spi_claim_bus(struct udevice *dev)
        struct udevice *bus = dev->parent;
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
        struct aspeed_spi_priv *priv = dev_get_priv(dev->parent);
-       struct aspeed_spi_flash *flash = &priv->flashes[slave_plat->cs];
+       struct aspeed_spi_flash *flash = &priv->flashes[slave_plat->cs[0]];
        u32 clk_setting;
 
-       dev_dbg(bus, "%s: claim bus CS%u\n", bus->name, slave_plat->cs);
+       dev_dbg(bus, "%s: claim bus CS%u\n", bus->name, slave_plat->cs[0]);
 
        if (flash->max_freq == 0) {
                clk_setting = priv->info->get_clk_setting(dev, 
slave_plat->max_hz);
@@ -1091,7 +1091,7 @@ static int aspeed_spi_release_bus(struct udevice *dev)
        struct udevice *bus = dev->parent;
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       dev_dbg(bus, "%s: release bus CS%u\n", bus->name, slave_plat->cs);
+       dev_dbg(bus, "%s: release bus CS%u\n", bus->name, slave_plat->cs[0]);
 
        if (!aspeed_spi_get_flash(dev))
                return -ENODEV;
diff --git a/drivers/spi/spi-mxic.c b/drivers/spi/spi-mxic.c
index f663b9dcbb..854f9dacfe 100644
--- a/drivers/spi/spi-mxic.c
+++ b/drivers/spi/spi-mxic.c
@@ -367,8 +367,8 @@ static int mxic_spi_mem_exec_op(struct spi_slave *slave,
                nio = 2;
 
        writel(HC_CFG_NIO(nio) |
-              HC_CFG_TYPE(slave_plat->cs, HC_CFG_TYPE_SPI_NOR) |
-              HC_CFG_SLV_ACT(slave_plat->cs) | HC_CFG_IDLE_SIO_LVL(1) |
+              HC_CFG_TYPE(slave_plat->cs[0], HC_CFG_TYPE_SPI_NOR) |
+              HC_CFG_SLV_ACT(slave_plat->cs[0]) | HC_CFG_IDLE_SIO_LVL(1) |
               HC_CFG_MAN_CS_EN,
               priv->regs + HC_CFG);
        writel(HC_EN_BIT, priv->regs + HC_EN);
@@ -397,7 +397,7 @@ static int mxic_spi_mem_exec_op(struct spi_slave *slave,
                        ss_ctrl |= OP_READ;
        }
 
-       writel(ss_ctrl, priv->regs + SS_CTRL(slave_plat->cs));
+       writel(ss_ctrl, priv->regs + SS_CTRL(slave_plat->cs[0]));
 
        writel(readl(priv->regs + HC_CFG) | HC_CFG_MAN_CS_ASSERT,
               priv->regs + HC_CFG);
diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
index 572cef1694..da28a4e7f8 100644
--- a/drivers/spi/spi-qup.c
+++ b/drivers/spi/spi-qup.c
@@ -719,7 +719,7 @@ static int qup_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
                if (ret != 0)
                        return ret;
 
-               ret = qup_spi_set_cs(bus, slave_plat->cs, false);
+               ret = qup_spi_set_cs(bus, slave_plat->cs[0], false);
                if (ret != 0)
                        return ret;
        }
@@ -737,7 +737,7 @@ static int qup_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        }
 
        if (flags & SPI_XFER_END) {
-               ret = qup_spi_set_cs(bus, slave_plat->cs, true);
+               ret = qup_spi_set_cs(bus, slave_plat->cs[0], true);
                if (ret != 0)
                        return ret;
        }
diff --git a/drivers/spi/spi-sifive.c b/drivers/spi/spi-sifive.c
index ea372a05f8..43904d74a2 100644
--- a/drivers/spi/spi-sifive.c
+++ b/drivers/spi/spi-sifive.c
@@ -109,13 +109,13 @@ static void sifive_spi_prep_device(struct sifive_spi *spi,
 {
        /* Update the chip select polarity */
        if (slave_plat->mode & SPI_CS_HIGH)
-               spi->cs_inactive &= ~BIT(slave_plat->cs);
+               spi->cs_inactive &= ~BIT(slave_plat->cs[0]);
        else
-               spi->cs_inactive |= BIT(slave_plat->cs);
+               spi->cs_inactive |= BIT(slave_plat->cs[0]);
        writel(spi->cs_inactive, spi->regs + SIFIVE_SPI_REG_CSDEF);
 
        /* Select the correct device */
-       writel(slave_plat->cs, spi->regs + SIFIVE_SPI_REG_CSID);
+       writel(slave_plat->cs[0], spi->regs + SIFIVE_SPI_REG_CSID);
 }
 
 static int sifive_spi_set_cs(struct sifive_spi *spi,
diff --git a/drivers/spi/spi-sn-f-ospi.c b/drivers/spi/spi-sn-f-ospi.c
index e3633a5260..36f180451e 100644
--- a/drivers/spi/spi-sn-f-ospi.c
+++ b/drivers/spi/spi-sn-f-ospi.c
@@ -498,7 +498,7 @@ static int f_ospi_exec_op(struct spi_slave *slave, const 
struct spi_mem_op *op)
        int err = 0;
 
        slave_plat = dev_get_parent_plat(slave->dev);
-       ospi->chip_select = slave_plat->cs;
+       ospi->chip_select = slave_plat->cs[0];
 
        switch (op->data.dir) {
        case SPI_MEM_DATA_IN:
diff --git a/drivers/spi/spi-sunxi.c b/drivers/spi/spi-sunxi.c
index c56d82d998..4a1ed71766 100644
--- a/drivers/spi/spi-sunxi.c
+++ b/drivers/spi/spi-sunxi.c
@@ -338,7 +338,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        }
 
        if (flags & SPI_XFER_BEGIN)
-               sun4i_spi_set_cs(bus, slave_plat->cs, true);
+               sun4i_spi_set_cs(bus, slave_plat->cs[0], true);
 
        /* Reset FIFOs */
        setbits_le32(SPI_REG(priv, SPI_FCR), SPI_BIT(priv, SPI_FCR_RF_RST) |
@@ -369,7 +369,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
                                        false, SUN4I_SPI_TIMEOUT_MS, false);
                if (ret < 0) {
                        printf("ERROR: sun4i_spi: Timeout transferring data\n");
-                       sun4i_spi_set_cs(bus, slave_plat->cs, false);
+                       sun4i_spi_set_cs(bus, slave_plat->cs[0], false);
                        return ret;
                }
 
@@ -380,7 +380,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int 
bitlen,
        }
 
        if (flags & SPI_XFER_END)
-               sun4i_spi_set_cs(bus, slave_plat->cs, false);
+               sun4i_spi_set_cs(bus, slave_plat->cs[0], false);
 
        return 0;
 }
diff --git a/drivers/spi/spi-synquacer.c b/drivers/spi/spi-synquacer.c
index 553f9687e3..5dea074fed 100644
--- a/drivers/spi/spi-synquacer.c
+++ b/drivers/spi/spi-synquacer.c
@@ -194,12 +194,12 @@ static void synquacer_spi_config(struct udevice *dev, 
void *rx, const void *tx)
        /* if nothing to do */
        if (slave_plat->mode == priv->mode &&
            rwflag == priv->rwflag &&
-           slave_plat->cs == priv->cs &&
+           slave_plat->cs[0] == priv->cs &&
            slave_plat->max_hz == priv->speed)
                return;
 
        priv->rwflag = rwflag;
-       priv->cs = slave_plat->cs;
+       priv->cs = slave_plat->cs[0];
        priv->mode = slave_plat->mode;
        priv->speed = slave_plat->max_hz;
 
diff --git a/drivers/spi/spi-uclass.c b/drivers/spi/spi-uclass.c
index f4795e6867..992394c295 100644
--- a/drivers/spi/spi-uclass.c
+++ b/drivers/spi/spi-uclass.c
@@ -225,7 +225,7 @@ int spi_chip_select(struct udevice *dev)
 {
        struct dm_spi_slave_plat *plat = dev_get_parent_plat(dev);
 
-       return plat ? plat->cs : -ENOENT;
+       return plat ? plat->cs[0] : -ENOENT;
 }
 
 int spi_find_chip_select(struct udevice *bus, int cs, struct udevice **devp)
@@ -262,8 +262,8 @@ int spi_find_chip_select(struct udevice *bus, int cs, 
struct udevice **devp)
                struct dm_spi_slave_plat *plat;
 
                plat = dev_get_parent_plat(dev);
-               dev_dbg(bus, "%s: plat=%p, cs=%d\n", __func__, plat, plat->cs);
-               if (plat->cs == cs) {
+               dev_dbg(bus, "%s: plat=%p, cs=%d\n", __func__, plat, 
plat->cs[0]);
+               if (plat->cs[0] == cs) {
                        *devp = dev;
                        return 0;
                }
@@ -416,7 +416,7 @@ int _spi_get_bus_and_cs(int busnum, int cs, int speed, int 
mode,
                        return ret;
                }
                plat = dev_get_parent_plat(dev);
-               plat->cs = cs;
+               plat->cs[0] = cs;
                if (speed) {
                        plat->max_hz = speed;
                } else {
@@ -447,6 +447,11 @@ int _spi_get_bus_and_cs(int busnum, int cs, int speed, int 
mode,
        slave = dev_get_parent_priv(dev);
        bus_data = dev_get_uclass_priv(bus);
 
+       if ((dev_read_bool(dev, "parallel-memories")) && !slave->multi_cs_cap) {
+               dev_err(dev, "controller doesn't support multi CS\n");
+               return -EINVAL;
+       }
+
        /*
         * In case the operation speed is not yet established by
         * dm_spi_claim_bus() ensure the bus is configured properly.
@@ -509,8 +514,26 @@ int spi_slave_of_to_plat(struct udevice *dev, struct 
dm_spi_slave_plat *plat)
 {
        int mode = 0;
        int value;
+       int ret;
+
+       ret = dev_read_u32_array(dev, "reg", plat->cs, SPI_CS_CNT_MAX);
+
+       if (IS_ENABLED(CONFIG_SPL_BUILD)) {
+               if (ret == -FDT_ERR_BADLAYOUT) {
+                       dev_read_u32(dev, "reg", &plat->cs[0]);
+               } else {
+                       dev_err(dev, "has no valid 'reg' property (%d)\n", ret);
+                       return ret;
+               }
+       } else {
+               if (ret == -EOVERFLOW) {
+                       dev_read_u32(dev, "reg", &plat->cs[0]);
+               } else if (ret) {
+                       dev_err(dev, "has no valid 'reg' property (%d)\n", ret);
+                       return ret;
+               }
+       }
 
-       plat->cs = dev_read_u32_default(dev, "reg", -1);
        plat->max_hz = dev_read_u32_default(dev, "spi-max-frequency",
                                            SPI_DEFAULT_SPEED_HZ);
        if (dev_read_bool(dev, "spi-cpol"))
diff --git a/drivers/spi/stm32_qspi.c b/drivers/spi/stm32_qspi.c
index 2ffa201a66..fa9b2ca4b6 100644
--- a/drivers/spi/stm32_qspi.c
+++ b/drivers/spi/stm32_qspi.c
@@ -395,7 +395,7 @@ static int stm32_qspi_claim_bus(struct udevice *dev)
 {
        struct stm32_qspi_priv *priv = dev_get_priv(dev->parent);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
-       int slave_cs = slave_plat->cs;
+       int slave_cs = slave_plat->cs[0];
 
        if (slave_cs >= STM32_QSPI_MAX_CHIP)
                return -ENODEV;
diff --git a/drivers/spi/stm32_spi.c b/drivers/spi/stm32_spi.c
index 82f6ed783f..192ba6cf2b 100644
--- a/drivers/spi/stm32_spi.c
+++ b/drivers/spi/stm32_spi.c
@@ -435,7 +435,7 @@ static int stm32_spi_xfer(struct udevice *slave, unsigned 
int bitlen,
 
        slave_plat = dev_get_parent_plat(slave);
        if (flags & SPI_XFER_BEGIN)
-               stm32_spi_set_cs(bus, slave_plat->cs, false);
+               stm32_spi_set_cs(bus, slave_plat->cs[0], false);
 
        /* Be sure to have data in fifo before starting data transfer */
        if (priv->tx_buf)
@@ -486,7 +486,7 @@ static int stm32_spi_xfer(struct udevice *slave, unsigned 
int bitlen,
        stm32_spi_stopxfer(bus);
 
        if (flags & SPI_XFER_END)
-               stm32_spi_set_cs(bus, slave_plat->cs, true);
+               stm32_spi_set_cs(bus, slave_plat->cs[0], true);
 
        return xfer_status;
 }
diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c
index 99acb10882..dfb74ce877 100644
--- a/drivers/spi/ti_qspi.c
+++ b/drivers/spi/ti_qspi.c
@@ -164,7 +164,7 @@ static int ti_qspi_xfer(struct udevice *dev, unsigned int 
bitlen,
        uchar *rxp = din;
        uint status;
        int timeout;
-       unsigned int cs = slave->cs;
+       unsigned int cs = slave->cs[0];
 
        bus = dev->parent;
        priv = dev_get_priv(bus);
@@ -345,7 +345,7 @@ static int ti_qspi_exec_mem_op(struct spi_slave *slave,
        if (from + op->data.nbytes > priv->mmap_size)
                return -ENOTSUPP;
 
-       ti_qspi_setup_mmap_read(priv, slave_plat->cs, op->cmd.opcode,
+       ti_qspi_setup_mmap_read(priv, slave_plat->cs[0], op->cmd.opcode,
                                op->data.buswidth, op->addr.nbytes,
                                op->dummy.nbytes);
 
@@ -364,7 +364,7 @@ static int ti_qspi_claim_bus(struct udevice *dev)
        bus = dev->parent;
        priv = dev_get_priv(bus);
 
-       if (slave_plat->cs > priv->num_cs) {
+       if (slave_plat->cs[0] > priv->num_cs) {
                debug("invalid qspi chip select\n");
                return -EINVAL;
        }
@@ -372,13 +372,13 @@ static int ti_qspi_claim_bus(struct udevice *dev)
        writel(MM_SWITCH, &priv->base->memswitch);
        if (priv->ctrl_mod_mmap)
                ti_qspi_ctrl_mode_mmap(priv->ctrl_mod_mmap,
-                                      slave_plat->cs, true);
+                                      slave_plat->cs[0], true);
 
        writel(priv->dc, &priv->base->dc);
        writel(0, &priv->base->cmd);
        writel(0, &priv->base->data);
 
-       priv->dc <<= slave_plat->cs * 8;
+       priv->dc <<= slave_plat->cs[0] * 8;
        writel(priv->dc, &priv->base->dc);
 
        return 0;
@@ -396,12 +396,12 @@ static int ti_qspi_release_bus(struct udevice *dev)
        writel(~MM_SWITCH, &priv->base->memswitch);
        if (priv->ctrl_mod_mmap)
                ti_qspi_ctrl_mode_mmap(priv->ctrl_mod_mmap,
-                                      slave_plat->cs, false);
+                                      slave_plat->cs[0], false);
 
        writel(0, &priv->base->dc);
        writel(0, &priv->base->cmd);
        writel(0, &priv->base->data);
-       writel(0, TI_QSPI_SETUP_REG(priv, slave_plat->cs));
+       writel(0, TI_QSPI_SETUP_REG(priv, slave_plat->cs[0]));
 
        return 0;
 }
diff --git a/drivers/spi/xilinx_spi.c b/drivers/spi/xilinx_spi.c
index b58a3f632a..7c4a9b79bb 100644
--- a/drivers/spi/xilinx_spi.c
+++ b/drivers/spi/xilinx_spi.c
@@ -270,7 +270,7 @@ static void xilinx_spi_startup_block(struct spi_slave *spi)
         * Perform a dummy read as a work around for
         * the startup block issue.
         */
-       spi_cs_activate(spi->dev, slave_plat->cs);
+       spi_cs_activate(spi->dev, slave_plat->cs[0]);
        txp = 0x9f;
        start_transfer(spi, (void *)&txp, NULL, 1);
 
@@ -298,7 +298,7 @@ static int xilinx_spi_mem_exec_op(struct spi_slave *spi,
                startup++;
        }
 
-       spi_cs_activate(spi->dev, slave_plat->cs);
+       spi_cs_activate(spi->dev, slave_plat->cs[0]);
 
        if (op->cmd.opcode) {
                ret = start_transfer(spi, (void *)&op->cmd.opcode, NULL, 1);
diff --git a/drivers/spi/zynq_qspi.c b/drivers/spi/zynq_qspi.c
index cb52c0f307..bc82acd0b6 100644
--- a/drivers/spi/zynq_qspi.c
+++ b/drivers/spi/zynq_qspi.c
@@ -586,13 +586,13 @@ static int zynq_qspi_xfer(struct udevice *dev, unsigned 
int bitlen,
        struct zynq_qspi_priv *priv = dev_get_priv(bus);
        struct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);
 
-       priv->cs = slave_plat->cs;
+       priv->cs = slave_plat->cs[0];
        priv->tx_buf = dout;
        priv->rx_buf = din;
        priv->len = bitlen / 8;
 
-       debug("zynq_qspi_xfer: bus:%i cs:%i bitlen:%i len:%i flags:%lx\n",
-             dev_seq(bus), slave_plat->cs, bitlen, priv->len, flags);
+       debug("%s: bus:%i cs[0]:%i bitlen:%i len:%i flags:%lx\n", __func__,
+             dev_seq(bus), slave_plat->cs[0], bitlen, priv->len, flags);
 
        /*
         * Festering sore.
diff --git a/drivers/spi/zynq_spi.c b/drivers/spi/zynq_spi.c
index b3e0858eb9..17bb1015fa 100644
--- a/drivers/spi/zynq_spi.c
+++ b/drivers/spi/zynq_spi.c
@@ -242,15 +242,15 @@ static int zynq_spi_xfer(struct udevice *dev, unsigned 
int bitlen,
        u8 *rx_buf = din, buf;
        u32 ts, status;
 
-       debug("spi_xfer: bus:%i cs:%i bitlen:%i len:%i flags:%lx\n",
-             dev_seq(bus), slave_plat->cs, bitlen, len, flags);
+       debug("spi_xfer: bus:%i cs[0]:%i bitlen:%i len:%i flags:%lx\n",
+             dev_seq(bus), slave_plat->cs[0], bitlen, len, flags);
 
        if (bitlen % 8) {
                debug("spi_xfer: Non byte aligned SPI transfer\n");
                return -1;
        }
 
-       priv->cs = slave_plat->cs;
+       priv->cs = slave_plat->cs[0];
        if (flags & SPI_XFER_BEGIN)
                spi_cs_activate(dev);
 
diff --git a/include/spi.h b/include/spi.h
index 56b8c26e9d..d591522001 100644
--- a/include/spi.h
+++ b/include/spi.h
@@ -81,7 +81,7 @@ struct dm_spi_bus {
  * @mode:      SPI mode to use for this device (see SPI mode flags)
  */
 struct dm_spi_slave_plat {
-       unsigned int cs;
+       unsigned int cs[SPI_CS_CNT_MAX];
        uint max_hz;
        uint mode;
 };
@@ -167,6 +167,12 @@ struct spi_slave {
 #define SPI_XFER_ONCE          (SPI_XFER_BEGIN | SPI_XFER_END)
 #define SPI_XFER_U_PAGE                BIT(4)
 #define SPI_XFER_STACKED       BIT(5)
+       /*
+        * Flag indicating that the spi-controller has multi chip select
+        * capability and can assert/de-assert more than one chip select
+        * at once.
+        */
+       bool multi_cs_cap;
 };
 
 /**
diff --git a/lib/acpi/acpi_device.c b/lib/acpi/acpi_device.c
index 1b838fdbd6..b80a45aefc 100644
--- a/lib/acpi/acpi_device.c
+++ b/lib/acpi/acpi_device.c
@@ -729,7 +729,7 @@ static int acpi_device_set_spi(const struct udevice *dev, 
struct acpi_spi *spi,
 
        plat = dev_get_parent_plat(slave->dev);
        memset(spi, '\0', sizeof(*spi));
-       spi->device_select = plat->cs;
+       spi->device_select = plat->cs[0];
        spi->device_select_polarity = SPI_POLARITY_LOW;
        spi->wire_mode = SPI_4_WIRE_MODE;
        spi->speed = plat->max_hz;
-- 
2.25.1

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