[U-Boot] [PATCH 2/2] mmc: omap: config VMMC, MMC1_PBIAS
T Krishnamoorthy, Balaji
balajitk at ti.com
Thu Sep 15 16:54:03 CEST 2011
Hi Andy,
This patch has been tested on OMAP3 beagle board and OMAP4 Blaze
mmc read and write is OK.
Do you have any comments on this patch?
--
Thanks and Regards,
Balaji T K
On Thu, Sep 8, 2011 at 10:04 PM, Balaji T K <balajitk at ti.com> wrote:
> Config VMMC voltage to 3V for MMC/SD card slot
> and PBIAS settings needed for OMAP4
> Fixes MMC/SD detection on boot from eMMC.
>
> Signed-off-by: Balaji T K <balajitk at ti.com>
> Signed-off-by: Aneesh V <aneesh at ti.com>
> ---
> arch/arm/include/asm/arch-omap4/omap4.h | 8 +++++++-
> drivers/mmc/omap_hsmmc.c | 31 ++++++++++++++++++++++++++++---
> drivers/power/twl6030.c | 7 +++++++
> include/configs/omap4_common.h | 2 ++
> include/configs/omap4_sdp4430.h | 2 ++
> include/twl6030.h | 3 +++
> 6 files changed, 49 insertions(+), 4 deletions(-)
>
> Index: u-boot/arch/arm/include/asm/arch-omap4/omap4.h
> ===================================================================
> --- u-boot.orig/arch/arm/include/asm/arch-omap4/omap4.h 2011-09-07 15:25:24.000000000 +0530
> +++ u-boot/arch/arm/include/asm/arch-omap4/omap4.h 2011-09-07 15:42:59.911624374 +0530
> @@ -125,6 +125,10 @@
> /* CONTROL_EFUSE_2 */
> #define CONTROL_EFUSE_2_NMOS_PMOS_PTV_CODE_1 0x00ffc000
>
> +#define MMC1_PWRDNZ (1 << 26)
> +#define MMC1_PBIASLITE_PWRDNZ (1 << 22)
> +#define MMC1_PBIASLITE_VMODE (1 << 21)
> +
> #ifndef __ASSEMBLY__
>
> struct s32ktimer {
> @@ -141,7 +145,9 @@ struct omap4_sys_ctrl_regs {
> unsigned int control_ldosram_iva_voltage_ctrl; /* 0x4A002320 */
> unsigned int control_ldosram_mpu_voltage_ctrl; /* 0x4A002324 */
> unsigned int control_ldosram_core_voltage_ctrl; /* 0x4A002328 */
> - unsigned int pad3[260341];
> + unsigned int pad3[260277];
> + unsigned int control_pbiaslite; /* 0x4A100600 */
> + unsigned int pad4[63];
> unsigned int control_efuse_1; /* 0x4A100700 */
> unsigned int control_efuse_2; /* 0x4A100704 */
> };
> Index: u-boot/drivers/mmc/omap_hsmmc.c
> ===================================================================
> --- u-boot.orig/drivers/mmc/omap_hsmmc.c 2011-09-07 15:25:56.000000000 +0530
> +++ u-boot/drivers/mmc/omap_hsmmc.c 2011-09-08 17:42:05.506320837 +0530
> @@ -28,6 +28,7 @@
> #include <part.h>
> #include <i2c.h>
> #include <twl4030.h>
> +#include <twl6030.h>
> #include <asm/io.h>
> #include <asm/arch/mmc_host_def.h>
> #include <asm/arch/sys_proto.h>
> @@ -38,7 +39,27 @@
> static int mmc_read_data(hsmmc_t *mmc_base, char *buf, unsigned int size);
> static int mmc_write_data(hsmmc_t *mmc_base, const char *buf, unsigned int siz);
> static struct mmc hsmmc_dev[2];
> -unsigned char mmc_board_init(hsmmc_t *mmc_base)
> +
> +#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
> +static void omap4_vmmc_pbias_config(struct mmc *mmc)
> +{
> + u32 value = 0;
> + struct omap4_sys_ctrl_regs *const ctrl =
> + (struct omap4_sys_ctrl_regs *)SYSCTRL_GENERAL_CORE_BASE;
> +
> +
> + value = readl(&ctrl->control_pbiaslite);
> + value &= ~(MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ);
> + writel(value, &ctrl->control_pbiaslite);
> + /* set VMMC to 3V */
> + twl6030_power_mmc_init();
> + value = readl(&ctrl->control_pbiaslite);
> + value |= MMC1_PBIASLITE_VMODE | MMC1_PBIASLITE_PWRDNZ | MMC1_PWRDNZ;
> + writel(value, &ctrl->control_pbiaslite);
> +}
> +#endif
> +
> +unsigned char mmc_board_init(struct mmc *mmc)
> {
> #if defined(CONFIG_TWL4030_POWER)
> twl4030_power_mmc_init();
> @@ -67,7 +88,11 @@ unsigned char mmc_board_init(hsmmc_t *mm
> &prcm_base->iclken1_core);
> #endif
>
> -/* TODO add appropriate OMAP4 init - none currently necessary */
> +#if defined(CONFIG_OMAP44XX) && defined(CONFIG_TWL6030_POWER)
> + /* PBIAS config needed for MMC1 only */
> + if (mmc->block_dev.dev == 0)
> + omap4_vmmc_pbias_config(mmc);
> +#endif
>
> return 0;
> }
> @@ -108,7 +133,7 @@ static int mmc_init_setup(struct mmc *mm
> unsigned int dsor;
> ulong start;
>
> - mmc_board_init(mmc_base);
> + mmc_board_init(mmc);
>
> writel(readl(&mmc_base->sysconfig) | MMC_SOFTRESET,
> &mmc_base->sysconfig);
> Index: u-boot/drivers/power/twl6030.c
> ===================================================================
> --- u-boot.orig/drivers/power/twl6030.c 2011-09-07 15:23:59.000000000 +0530
> +++ u-boot/drivers/power/twl6030.c 2011-09-08 17:41:22.621998671 +0530
> @@ -182,6 +182,13 @@ void twl6030_init_battery_charging(void)
> return;
> }
>
> +void twl6030_power_mmc_init()
> +{
> + /* set voltage to 3.0 and turnon for APP */
> + twl6030_i2c_write_u8(TWL6030_CHIP_PM, 0x15, VMMC_CFG_VOLTATE);
> + twl6030_i2c_write_u8(TWL6030_CHIP_PM, 0x21, VMMC_CFG_STATE);
> +}
> +
> void twl6030_usb_device_settings()
> {
> u8 data = 0;
> Index: u-boot/include/configs/omap4_sdp4430.h
> ===================================================================
> --- u-boot.orig/include/configs/omap4_sdp4430.h 2011-09-07 15:25:24.000000000 +0530
> +++ u-boot/include/configs/omap4_sdp4430.h 2011-09-07 15:29:29.317845163 +0530
> @@ -37,7 +37,9 @@
> #include <configs/omap4_common.h>
>
> /* Battery Charger */
> +#ifndef CONFIG_SPL_BUILD
> #define CONFIG_CMD_BAT 1
> +#endif
>
> /* ENV related config options */
> #define CONFIG_ENV_IS_IN_MMC 1
> Index: u-boot/include/twl6030.h
> ===================================================================
> --- u-boot.orig/include/twl6030.h 2011-09-07 15:02:41.000000000 +0530
> +++ u-boot/include/twl6030.h 2011-09-07 15:26:03.593841593 +0530
> @@ -33,6 +33,8 @@
> #define TWL6030_CHIP_PWM 0x49
>
> /* Slave Address 0x48 */
> +#define VMMC_CFG_STATE 0x9A
> +#define VMMC_CFG_VOLTATE 0x9B
> #define VUSB_CFG_STATE 0xA2
>
> #define MISC1 0xE4
> @@ -130,3 +132,4 @@ void twl6030_start_usb_charging(void);
> void twl6030_stop_usb_charging(void);
> int twl6030_get_battery_voltage(void);
> int twl6030_get_battery_current(void);
> +void twl6030_power_mmc_init(void);
> Index: u-boot/include/configs/omap4_common.h
> ===================================================================
> --- u-boot.orig/include/configs/omap4_common.h 2011-09-07 15:28:36.653842459 +0530
> +++ u-boot/include/configs/omap4_common.h 2011-09-07 15:29:08.614576120 +0530
> @@ -98,7 +98,9 @@
> #define CONFIG_I2C_MULTI_BUS 1
>
> /* TWL6030 */
> +#ifndef CONFIG_SPL_BUILD
> #define CONFIG_TWL6030_POWER 1
> +#endif
>
> /* MMC */
> #define CONFIG_GENERIC_MMC 1
>
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