STiH410: Add STi SDHCI driver
Add SDHCI host controller found on STMicroelectronics SoCs
On some ST SoCs, i.e. STiH407/STiH410, the MMC devices can live
inside a dedicated flashSS sub-system that provides an extend subset
of registers that can be used to configure the Arasan MMC/SD Host
Controller.
This means, that the SDHCI Arasan Controller can be configured to be
eMMC4.5 or 4.3 spec compliant.
W/o these settings the SDHCI will configure and use the MMC/SD
controller with limited features e.g. PIO mode, no DMA, no HS etc.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index bde969d..20434dc 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -1098,6 +1098,8 @@
select CPU_V7
select DM
select DM_SERIAL
+ select BLK
+ select DM_MMC
help
Support for STMicroelectronics STiH407/10 SoC family.
This SoC is used on Linaro 96Board STiH410-B2260
diff --git a/arch/arm/include/asm/arch-stih410/sdhci.h b/arch/arm/include/asm/arch-stih410/sdhci.h
new file mode 100644
index 0000000..8cd77fc
--- /dev/null
+++ b/arch/arm/include/asm/arch-stih410/sdhci.h
@@ -0,0 +1,68 @@
+/*
+ * (C) Copyright 2017 Patrice Chotard <patrice.chotard@st.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#ifndef __STI_SDHCI_H__
+#define __STI_SDHCI_H__
+
+#define FLASHSS_MMC_CORE_CONFIG_1 0x400
+#define FLASHSS_MMC_CORECFG_TIMEOUT_CLK_UNIT_MHZ BIT(24)
+#define FLASHSS_MMC_CORECFG_TIMEOUT_CLK_FREQ_MIN BIT(12)
+
+#define STI_FLASHSS_MMC_CORE_CONFIG_1 \
+ (FLASHSS_MMC_CORECFG_TIMEOUT_CLK_UNIT_MHZ | \
+ FLASHSS_MMC_CORECFG_TIMEOUT_CLK_FREQ_MIN)
+
+#define FLASHSS_MMC_CORE_CONFIG_2 0x404
+#define FLASHSS_MMC_CORECFG_HIGH_SPEED BIT(28)
+#define FLASHSS_MMC_CORECFG_8BIT_EMMC BIT(20)
+#define MAX_BLK_LENGTH_1024 BIT(16)
+#define BASE_CLK_FREQ_200 0xc8
+
+#define STI_FLASHSS_MMC_CORE_CONFIG2 \
+ (FLASHSS_MMC_CORECFG_HIGH_SPEED | \
+ FLASHSS_MMC_CORECFG_8BIT_EMMC | \
+ MAX_BLK_LENGTH_1024 | \
+ BASE_CLK_FREQ_200 << 0)
+
+#define STI_FLASHSS_SDCARD_CORE_CONFIG2 \
+ (FLASHSS_MMC_CORECFG_HIGH_SPEED | \
+ MAX_BLK_LENGTH_1024 | \
+ BASE_CLK_FREQ_200)
+
+#define FLASHSS_MMC_CORE_CONFIG_3 0x408
+#define FLASHSS_MMC_CORECFG_SLOT_TYPE_EMMC BIT(28)
+#define FLASHSS_MMC_CORECFG_ASYNCH_INTR_SUPPORT BIT(20)
+#define FLASHSS_MMC_CORECFG_3P3_VOLT BIT(8)
+#define FLASHSS_MMC_CORECFG_SUSP_RES_SUPPORT BIT(4)
+#define FLASHSS_MMC_CORECFG_SDMA BIT(0)
+
+#define STI_FLASHSS_MMC_CORE_CONFIG3 \
+ (FLASHSS_MMC_CORECFG_SLOT_TYPE_EMMC | \
+ FLASHSS_MMC_CORECFG_ASYNCH_INTR_SUPPORT | \
+ FLASHSS_MMC_CORECFG_3P3_VOLT | \
+ FLASHSS_MMC_CORECFG_SUSP_RES_SUPPORT | \
+ FLASHSS_MMC_CORECFG_SDMA)
+
+#define STI_FLASHSS_SDCARD_CORE_CONFIG3 \
+ (FLASHSS_MMC_CORECFG_ASYNCH_INTR_SUPPORT | \
+ FLASHSS_MMC_CORECFG_3P3_VOLT | \
+ FLASHSS_MMC_CORECFG_SUSP_RES_SUPPORT | \
+ FLASHSS_MMC_CORECFG_SDMA)
+
+#define FLASHSS_MMC_CORE_CONFIG_4 0x40c
+#define FLASHSS_MMC_CORECFG_D_DRIVER_SUPPORT BIT(20)
+#define FLASHSS_MMC_CORECFG_C_DRIVER_SUPPORT BIT(16)
+#define FLASHSS_MMC_CORECFG_A_DRIVER_SUPPORT BIT(12)
+
+#define STI_FLASHSS_MMC_CORE_CONFIG4 \
+ (FLASHSS_MMC_CORECFG_D_DRIVER_SUPPORT | \
+ FLASHSS_MMC_CORECFG_C_DRIVER_SUPPORT | \
+ FLASHSS_MMC_CORECFG_A_DRIVER_SUPPORT)
+
+#define ST_MMC_CCONFIG_REG_5 0x210
+#define SYSCONF_MMC1_ENABLE_BIT 3
+
+#endif /* _STI_SDHCI_H_ */