[U-Boot] [PATCH v3 2/3] ARM:AM33XX: Add mmc/sd support

Chandan Nath
2012-01-03T06:42:55Z

This patch add supports for mmc/sd driver on AM335X platform.
PLL and pinmux configurations for mmc/sd are configured in this
patch.

Signed-off-by: Chandan Nath <chandan.nath@ti.com>
Signed-off-by: Tom Rini <trini@ti.com>
---
Changes since v2:
- No change

Changes since v1:
- Removed unwanted code from omap_hsmmc.c file
- Rebased to master branch

arch/arm/cpu/armv7/am33xx/board.c | 7 +
arch/arm/cpu/armv7/am33xx/clock.c | 5 +
arch/arm/include/asm/arch-am33xx/mmc_host_def.h | 164 +++++++++++++++++++++++
board/ti/am335x/mux.c | 20 +++
include/configs/am335x_evm.h | 9 ++
5 files changed, 205 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/include/asm/arch-am33xx/mmc_host_def.h

diff --git a/arch/arm/cpu/armv7/am33xx/board.c b/arch/arm/cpu/armv7/am33xx/board.c
index 78db3a5..312643c 100644
--- a/arch/arm/cpu/armv7/am33xx/board.c
+++ b/arch/arm/cpu/armv7/am33xx/board.c
@@ -64,3 +64,10 @@ void init_timer(void)
/* Start the Timer */
writel(0x1, (&timer_base->tclr));
}
+
+#if defined(CONFIG_OMAP_HSMMC) && !defined(CONFIG_SPL_BUILD)
+int board_mmc_init(bd_t *bis)
+{
+ return omap_mmc_init(0);
+}
+#endif
diff --git a/arch/arm/cpu/armv7/am33xx/clock.c b/arch/arm/cpu/armv7/am33xx/clock.c
index 7070e7d..98cfd93 100644
--- a/arch/arm/cpu/armv7/am33xx/clock.c
+++ b/arch/arm/cpu/armv7/am33xx/clock.c
@@ -108,6 +108,11 @@ static void enable_per_clocks(void)
writel(PRCM_MOD_EN, &cmwkup->wkup_uart0ctrl);
while (readl(&cmwkup->wkup_uart0ctrl) != PRCM_MOD_EN)
;
+
+ /* MMC0*/
+ writel(PRCM_MOD_EN, &cmper->mmc0clkctrl);
+ while (readl(&cmper->mmc0clkctrl) != PRCM_MOD_EN)
+ ;
}

static void mpu_pll_config(void)
diff --git a/arch/arm/include/asm/arch-am33xx/mmc_host_def.h b/arch/arm/include/asm/arch-am33xx/mmc_host_def.h
new file mode 100644
index 0000000..e56c018
--- /dev/null
+++ b/arch/arm/include/asm/arch-am33xx/mmc_host_def.h
@@ -0,0 +1,164 @@
+/*
+ * mmc_host_def.h
+ *
+ * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef MMC_HOST_DEF_H
+#define MMC_HOST_DEF_H
+
+/*
+ * OMAP HSMMC register definitions
+ */
+#define OMAP_HSMMC1_BASE 0x48060100
+#define OMAP_HSMMC2_BASE 0x481D8000
+#define OMAP_HSMMC3_BASE 0x47C24000
+
+typedef struct hsmmc {
+ unsigned char res1[0x10];
+ unsigned int sysconfig; /* 0x10 */
+ unsigned int sysstatus; /* 0x14 */
+ unsigned char res2[0x14];
+ unsigned int con; /* 0x2C */
+ unsigned char res3[0xD4];
+ unsigned int blk; /* 0x104 */
+ unsigned int arg; /* 0x108 */
+ unsigned int cmd; /* 0x10C */
+ unsigned int rsp10; /* 0x110 */
+ unsigned int rsp32; /* 0x114 */
+ unsigned int rsp54; /* 0x118 */
+ unsigned int rsp76; /* 0x11C */
+ unsigned int data; /* 0x120 */
+ unsigned int pstate; /* 0x124 */
+ unsigned int hctl; /* 0x128 */
+ unsigned int sysctl; /* 0x12C */
+ unsigned int stat; /* 0x130 */
+ unsigned int ie; /* 0x134 */
+ unsigned char res4[0x8];
+ unsigned int capa; /* 0x140 */
+} hsmmc_t;
+
+/*
+ * OMAP HS MMC Bit definitions
+ */
+#define MMC_SOFTRESET (0x1 << 1)
+#define RESETDONE (0x1 << 0)
+#define NOOPENDRAIN (0x0 << 0)
+#define OPENDRAIN (0x1 << 0)
+#define OD (0x1 << 0)
+#define INIT_NOINIT (0x0 << 1)
+#define INIT_INITSTREAM (0x1 << 1)
+#define HR_NOHOSTRESP (0x0 << 2)
+#define STR_BLOCK (0x0 << 3)
+#define MODE_FUNC (0x0 << 4)
+#define DW8_1_4BITMODE (0x0 << 5)
+#define MIT_CTO (0x0 << 6)
+#define CDP_ACTIVEHIGH (0x0 << 7)
+#define WPP_ACTIVEHIGH (0x0 << 8)
+#define RESERVED_MASK (0x3 << 9)
+#define CTPL_MMC_SD (0x0 << 11)
+#define BLEN_512BYTESLEN (0x200 << 0)
+#define NBLK_STPCNT (0x0 << 16)
+#define DE_DISABLE (0x0 << 0)
+#define BCE_DISABLE (0x0 << 1)
+#define BCE_ENABLE (0x1 << 1)
+#define ACEN_DISABLE (0x0 << 2)
+#define DDIR_OFFSET (4)
+#define DDIR_MASK (0x1 << 4)
+#define DDIR_WRITE (0x0 << 4)
+#define DDIR_READ (0x1 << 4)
+#define MSBS_SGLEBLK (0x0 << 5)
+#define MSBS_MULTIBLK (0x1 << 5)
+#define RSP_TYPE_OFFSET (16)
+#define RSP_TYPE_MASK (0x3 << 16)
+#define RSP_TYPE_NORSP (0x0 << 16)
+#define RSP_TYPE_LGHT136 (0x1 << 16)
+#define RSP_TYPE_LGHT48 (0x2 << 16)
+#define RSP_TYPE_LGHT48B (0x3 << 16)
+#define CCCE_NOCHECK (0x0 << 19)
+#define CCCE_CHECK (0x1 << 19)
+#define CICE_NOCHECK (0x0 << 20)
+#define CICE_CHECK (0x1 << 20)
+#define DP_OFFSET (21)
+#define DP_MASK (0x1 << 21)
+#define DP_NO_DATA (0x0 << 21)
+#define DP_DATA (0x1 << 21)
+#define CMD_TYPE_NORMAL (0x0 << 22)
+#define INDEX_OFFSET (24)
+#define INDEX_MASK (0x3f << 24)
+#define INDEX(i) (i << 24)
+#define DATI_MASK (0x1 << 1)
+#define DATI_CMDDIS (0x1 << 1)
+#define DTW_1_BITMODE (0x0 << 1)
+#define DTW_4_BITMODE (0x1 << 1)
+#define DTW_8_BITMODE (0x1 << 5) /* CON[DW8]*/
+#define SDBP_PWROFF (0x0 << 8)
+#define SDBP_PWRON (0x1 << 8)
+#define SDVS_1V8 (0x5 << 9)
+#define SDVS_3V0 (0x6 << 9)
+#define ICE_MASK (0x1 << 0)
+#define ICE_STOP (0x0 << 0)
+#define ICS_MASK (0x1 << 1)
+#define ICS_NOTREADY (0x0 << 1)
+#define ICE_OSCILLATE (0x1 << 0)
+#define CEN_MASK (0x1 << 2)
+#define CEN_DISABLE (0x0 << 2)
+#define CEN_ENABLE (0x1 << 2)
+#define CLKD_OFFSET (6)
+#define CLKD_MASK (0x3FF << 6)
+#define DTO_MASK (0xF << 16)
+#define DTO_15THDTO (0xE << 16)
+#define SOFTRESETALL (0x1 << 24)
+#define CC_MASK (0x1 << 0)
+#define TC_MASK (0x1 << 1)
+#define BWR_MASK (0x1 << 4)
+#define BRR_MASK (0x1 << 5)
+#define ERRI_MASK (0x1 << 15)
+#define IE_CC (0x01 << 0)
+#define IE_TC (0x01 << 1)
+#define IE_BWR (0x01 << 4)
+#define IE_BRR (0x01 << 5)
+#define IE_CTO (0x01 << 16)
+#define IE_CCRC (0x01 << 17)
+#define IE_CEB (0x01 << 18)
+#define IE_CIE (0x01 << 19)
+#define IE_DTO (0x01 << 20)
+#define IE_DCRC (0x01 << 21)
+#define IE_DEB (0x01 << 22)
+#define IE_CERR (0x01 << 28)
+#define IE_BADA (0x01 << 29)
+
+#define VS30_3V0SUP (1 << 25)
+#define VS18_1V8SUP (1 << 26)
+
+/* Driver definitions */
+#define MMCSD_SECTOR_SIZE 512
+#define MMC_CARD 0
+#define SD_CARD 1
+#define BYTE_MODE 0
+#define SECTOR_MODE 1
+#define CLK_INITSEQ 0
+#define CLK_400KHZ 1
+#define CLK_MISC 2
+
+#define RSP_TYPE_NONE (RSP_TYPE_NORSP | CCCE_NOCHECK | CICE_NOCHECK)
+#define MMC_CMD0 (INDEX(0) | RSP_TYPE_NONE | DP_NO_DATA | DDIR_WRITE)
+
+/* Clock Configurations and Macros */
+#define MMC_CLOCK_REFERENCE 96 /* MHz */
+
+#define mmc_reg_out(addr, mask, val)\
+ writel((readl(addr) & (~(mask))) | ((val) & (mask)), (addr))
+
+int omap_mmc_init(int dev_index);
+
+#endif /* MMC_HOST_DEF_H */
diff --git a/board/ti/am335x/mux.c b/board/ti/am335x/mux.c
index 8f27409..df11752 100644
--- a/board/ti/am335x/mux.c
+++ b/board/ti/am335x/mux.c
@@ -258,6 +258,20 @@ static struct module_pin_mux uart0_pin_mux[] = {
{-1},
};

+#ifdef CONFIG_MMC
+static struct module_pin_mux mmc0_pin_mux[] = {
+ {OFFSET(mmc0_dat3), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT3 */
+ {OFFSET(mmc0_dat2), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT2 */
+ {OFFSET(mmc0_dat1), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT1 */
+ {OFFSET(mmc0_dat0), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_DAT0 */
+ {OFFSET(mmc0_clk), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CLK */
+ {OFFSET(mmc0_cmd), (MODE(0) | RXACTIVE | PULLUP_EN)}, /* MMC0_CMD */
+ {OFFSET(mcasp0_aclkr), (MODE(4) | RXACTIVE)}, /* MMC0_WP */
+ {OFFSET(spi0_cs1), (MODE(5) | RXACTIVE | PULLUP_EN)}, /* MMC0_CD */
+ {-1},
+};
+#endif
+
/*
* Configure the pin mux for the module
*/
@@ -276,3 +290,9 @@ void enable_uart0_pin_mux(void)
{
configure_module_pin_mux(uart0_pin_mux);
}
+
+
+void enable_mmc0_pin_mux(void)
+{
+ configure_module_pin_mux(mmc0_pin_mux);
+}
diff --git a/include/configs/am335x_evm.h b/include/configs/am335x_evm.h
index c189031..bd68e9a 100644
--- a/include/configs/am335x_evm.h
+++ b/include/configs/am335x_evm.h
@@ -76,6 +76,15 @@
#define CONFIG_SYS_LOAD_ADDR 0x81000000 /* Default load address */
#define CONFIG_SYS_HZ 1000 /* 1ms clock */

+#define CONFIG_MMC
+#define CONFIG_AM335X_HSMMC_BASE 0x48060100
+#define CONFIG_GENERIC_MMC
+#define CONFIG_OMAP_HSMMC
+#define CONFIG_CMD_MMC
+#define CONFIG_DOS_PARTITION
+#define CONFIG_CMD_FAT
+#define CONFIG_CMD_EXT2
+
/* Physical Memory Map */
#define CONFIG_NR_DRAM_BANKS 1 /* 1 bank of DRAM */
#define PHYS_DRAM_1 0x80000000 /* DRAM Bank #1 */
--
1.7.1