AM654 has an arasan sdhci controller and a mmc phy attached to it.
Add basic support for K3 specific arasan sdhci controller.
Cc: Jaehoon Chung
Signed-off-by: Lokesh Vutla
---
drivers/mmc/Kconfig | 9 +++
drivers/mmc/Makefile | 1 +
drivers/mmc/k3_arsan_sdhci.c | 109 +++
3 files changed, 119 insertions(+)
create mode 100644 drivers/mmc/k3_arsan_sdhci.c
diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 377b1c4b3b..27dfccb9b2 100644
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -402,6 +402,15 @@ config MMC_SDHCI_CADENCE
If unsure, say N.
+config MMC_SDHCI_K3_ARASAN
+ bool "Arasan SDHCI controller for TI's K3 based SoCs"
+ depends on ARCH_K3
+ depends on MMC_SDHCI
+ depends on DM_MMC && OF_CONTROL && BLK
+ help
+ Support for Arasan SDHCI host controller on Texas Instruments'
+ K3 family based SoC platforms
+
config MMC_SDHCI_KONA
bool "SDHCI support on Broadcom KONA platform"
depends on MMC_SDHCI
diff --git a/drivers/mmc/Makefile b/drivers/mmc/Makefile
index f6191862d6..23c5b0daef 100644
--- a/drivers/mmc/Makefile
+++ b/drivers/mmc/Makefile
@@ -47,6 +47,7 @@ obj-$(CONFIG_MMC_SDHCI_ATMEL) += atmel_sdhci.o
obj-$(CONFIG_MMC_SDHCI_BCM2835)+= bcm2835_sdhci.o
obj-$(CONFIG_MMC_SDHCI_BCMSTB) += bcmstb_sdhci.o
obj-$(CONFIG_MMC_SDHCI_CADENCE)+= sdhci-cadence.o
+obj-$(CONFIG_MMC_SDHCI_K3_ARASAN) += k3_arsan_sdhci.o
obj-$(CONFIG_MMC_SDHCI_KONA) += kona_sdhci.o
obj-$(CONFIG_MMC_SDHCI_MSM)+= msm_sdhci.o
obj-$(CONFIG_MMC_SDHCI_MV) += mv_sdhci.o
diff --git a/drivers/mmc/k3_arsan_sdhci.c b/drivers/mmc/k3_arsan_sdhci.c
new file mode 100644
index 00..1da25dc55d
--- /dev/null
+++ b/drivers/mmc/k3_arsan_sdhci.c
@@ -0,0 +1,109 @@
+// SPDX-License-Identifier:GPL-2.0+
+/*
+ * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * Texas Instruments' K3 SD Host Controller Interface
+ */
+
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define K3_ARASAN_SDHCI_MIN_FREQ 0
+
+struct k3_arasan_sdhci_plat {
+ struct mmc_config cfg;
+ struct mmc mmc;
+ unsigned int f_max;
+};
+
+static int k3_arasan_sdhci_probe(struct udevice *dev)
+{
+ struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
+ struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev);
+ struct sdhci_host *host = dev_get_priv(dev);
+ struct power_domain sdhci_pwrdmn;
+ struct clk clk;
+ unsigned long clock;
+ int ret;
+
+ ret = power_domain_get_by_index(dev, _pwrdmn, 0);
+ if (ret) {
+ dev_err(dev, "failed to get power domain\n");
+ return ret;
+ }
+
+ ret = power_domain_on(_pwrdmn);
+ if (ret) {
+ dev_err(dev, "Power domain on failed\n");
+ return ret;
+ }
+
+ ret = clk_get_by_index(dev, 0, );
+ if (ret) {
+ dev_err(dev, "failed to get clock\n");
+ return ret;
+ }
+
+ clock = clk_get_rate();
+ if (IS_ERR_VALUE(clock)) {
+ dev_err(dev, "failed to get rate\n");
+ return clock;
+ }
+
+ host->quirks = SDHCI_QUIRK_WAIT_SEND_CMD |
+ SDHCI_QUIRK_BROKEN_R1B;
+
+ host->max_clk = clock;
+
+ ret = sdhci_setup_cfg(>cfg, host, plat->f_max,
+ K3_ARASAN_SDHCI_MIN_FREQ);
+ host->mmc = >mmc;
+ if (ret)
+ return ret;
+ host->mmc->priv = host;
+ host->mmc->dev = dev;
+ upriv->mmc = host->mmc;
+
+ return sdhci_probe(dev);
+}
+
+static int k3_arasan_sdhci_ofdata_to_platdata(struct udevice *dev)
+{
+ struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
+ struct sdhci_host *host = dev_get_priv(dev);
+
+ host->name = dev->name;
+ host->ioaddr = (void *)dev_read_addr(dev);
+ host->bus_width = dev_read_u32_default(dev, "bus-width", 4);
+ plat->f_max = dev_read_u32_default(dev, "max-frequency", 0);
+
+ return 0;
+}
+
+static int k3_arasan_sdhci_bind(struct udevice *dev)
+{
+ struct k3_arasan_sdhci_plat *plat = dev_get_platdata(dev);
+
+ return sdhci_bind(dev, >mmc, >cfg);
+}
+
+static const struct udevice_id k3_arasan_sdhci_ids[] = {
+ { .compatible = "arasan,sdhci-5.1" },
+ { }
+};
+
+U_BOOT_DRIVER(k3_arasan_sdhci_drv) = {
+ .name = "k3_arasan_sdhci",
+ .id = UCLASS_MMC,
+ .of_match = k3_arasan_sdhci_ids,
+ .ofdata_to_platdata = k3_arasan_sdhci_ofdata_to_platdata,
+ .ops= _ops,
+ .bind = k3_arasan_sdhci_bind,
+ .probe = k3_arasan_sdhci_probe,
+ .priv_auto_alloc_size = sizeof(struct sdhci_host),
+ .platdata_auto_alloc_size = sizeof(struct
