From: Linus Walleij <linus.wall...@linaro.org>
This registers the PL022 PrimeCell from the U300 device
tree. We make a new copy of the platform data for the
device tree boot path, as the old platform data is in an
older file which will be going away.
Signed-off-by: Linus Walleij <linus.wall...@linaro.org>
---
arch/arm/boot/dts/ste-u300.dts | 7 +++++++
arch/arm/mach-u300/core.c | 19 +++++++++++++++++++
2 files changed, 26 insertions(+)
diff --git a/arch/arm/boot/dts/ste-u300.dts b/arch/arm/boot/dts/ste-u300.dts
index cdffeb9..979d96c 100644
--- a/arch/arm/boot/dts/ste-u300.dts
+++ b/arch/arm/boot/dts/ste-u300.dts
@@ -214,5 +214,12 @@
cd-inverted;
vmmc-supply = <&ab3100_ldo_g_reg>;
};
+
+ spi: ssp@c0006000 {
+ compatible = "arm,pl022", "arm,primecell";
+ reg = <0xc0006000 0x1000>;
+ interrupt-parent = <&vica>;
+ interrupts = <23>;
+ };
};
};
diff --git a/arch/arm/mach-u300/core.c b/arch/arm/mach-u300/core.c
index 98d4dbe..9467ffe 100644
--- a/arch/arm/mach-u300/core.c
+++ b/arch/arm/mach-u300/core.c
@@ -19,6 +19,7 @@
#include <linux/dmaengine.h>
#include <linux/amba/bus.h>
#include <linux/amba/mmci.h>
+#include <linux/amba/pl022.h>
#include <linux/amba/serial.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
@@ -703,6 +704,22 @@ MACHINE_END
#ifdef CONFIG_OF
+static struct pl022_ssp_controller spi_plat_data = {
+ /* If you have several SPI buses this varies, we have only bus 0 */
+ .bus_id = 0,
+ /*
+ * On the APP CPU GPIO 4, 5 and 6 are connected as generic
+ * chip selects for SPI. (Same on U330, U335 and U365.)
+ * TODO: make sure the GPIO driver can select these properly
+ * and do padmuxing accordingly too.
+ */
+ .num_chipselect = 3,
+ .enable_dma = 1,
+ .dma_filter = coh901318_filter_id,
+ .dma_rx_param = (void *) U300_DMA_SPI_RX,
+ .dma_tx_param = (void *) U300_DMA_SPI_TX,
+};
+
/* These are mostly to get the right device names for the clock lookups */
static struct of_dev_auxdata u300_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("stericsson,pinctrl-u300", U300_SYSCON_BASE,
@@ -719,6 +736,8 @@ static struct of_dev_auxdata u300_auxdata_lookup[]
__initdata = {
"uart0", &uart0_plat_data),
OF_DEV_AUXDATA("arm,primecell", U300_UART1_BASE,
"uart1", &uart1_plat_data),
+ OF_DEV_AUXDATA("arm,primecell", U300_SPI_BASE,
+ "pl022", &spi_plat_data),
OF_DEV_AUXDATA("st,ddci2c", U300_I2C0_BASE,
"stu300.0", NULL),
OF_DEV_AUXDATA("st,ddci2c", U300_I2C1_BASE,
--
1.7.11.3
------------------------------------------------------------------------------
Precog is a next-generation analytics platform capable of advanced
analytics on semi-structured data. The platform includes APIs for building
apps and a phenomenal toolset for data science. Developers can use
our toolset for easy data analysis & visualization. Get a free account!
http://www2.precog.com/precogplatform/slashdotnewsletter
_______________________________________________
spi-devel-general mailing list
spi-devel-general@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/spi-devel-general
