diff options
Diffstat (limited to 'drivers/mmc/omap_hsmmc.c')
| -rw-r--r-- | drivers/mmc/omap_hsmmc.c | 61 |
1 files changed, 55 insertions, 6 deletions
diff --git a/drivers/mmc/omap_hsmmc.c b/drivers/mmc/omap_hsmmc.c index f2a7a78..afd9b30 100644 --- a/drivers/mmc/omap_hsmmc.c +++ b/drivers/mmc/omap_hsmmc.c @@ -29,6 +29,7 @@ #include <i2c.h> #include <twl4030.h> #include <twl6030.h> +#include <twl6035.h> #include <asm/io.h> #include <asm/arch/mmc_host_def.h> #include <asm/arch/sys_proto.h> @@ -49,8 +50,8 @@ static struct mmc hsmmc_dev[2]; 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; + struct omap_sys_ctrl_regs *const ctrl = + (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE; value = readl(&ctrl->control_pbiaslite); @@ -64,6 +65,34 @@ static void omap4_vmmc_pbias_config(struct mmc *mmc) } #endif +#if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER) +static void omap5_pbias_config(struct mmc *mmc) +{ + u32 value = 0; + struct omap_sys_ctrl_regs *const ctrl = + (struct omap_sys_ctrl_regs *) SYSCTRL_GENERAL_CORE_BASE; + + value = readl(&ctrl->control_pbias); + value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ); + value |= SDCARD_BIAS_HIZ_MODE; + writel(value, &ctrl->control_pbias); + + twl6035_mmc1_poweron_ldo(); + + value = readl(&ctrl->control_pbias); + value &= ~SDCARD_BIAS_HIZ_MODE; + value |= SDCARD_PBIASLITE_VMODE | SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ; + writel(value, &ctrl->control_pbias); + + value = readl(&ctrl->control_pbias); + if (value & (1 << 23)) { + value &= ~(SDCARD_PWRDNZ | SDCARD_BIAS_PWRDNZ); + value |= SDCARD_BIAS_HIZ_MODE; + writel(value, &ctrl->control_pbias); + } +} +#endif + unsigned char mmc_board_init(struct mmc *mmc) { #if defined(CONFIG_OMAP34XX) @@ -90,6 +119,11 @@ unsigned char mmc_board_init(struct mmc *mmc) writel(readl(&t2_base->devconf1) | MMCSDIO2ADPCLKISEL, &t2_base->devconf1); + /* Change from default of 52MHz to 26MHz if necessary */ + if (!(mmc->host_caps & MMC_MODE_HS_52MHz)) + writel(readl(&t2_base->ctl_prog_io1) & ~CTLPROGIO1SPEEDCTRL, + &t2_base->ctl_prog_io1); + writel(readl(&prcm_base->fclken1_core) | EN_MMC1 | EN_MMC2 | EN_MMC3, &prcm_base->fclken1_core); @@ -104,6 +138,10 @@ unsigned char mmc_board_init(struct mmc *mmc) if (mmc->block_dev.dev == 0) omap4_vmmc_pbias_config(mmc); #endif +#if defined(CONFIG_OMAP54XX) && defined(CONFIG_TWL6035_POWER) + if (mmc->block_dev.dev == 0) + omap5_pbias_config(mmc); +#endif return 0; } @@ -502,7 +540,7 @@ static void mmc_set_ios(struct mmc *mmc) writel(readl(&mmc_base->sysctl) | CEN_ENABLE, &mmc_base->sysctl); } -int omap_mmc_init(int dev_index) +int omap_mmc_init(int dev_index, uint host_caps_mask, uint f_max) { struct mmc *mmc; @@ -533,11 +571,22 @@ int omap_mmc_init(int dev_index) return 1; } mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34 | MMC_VDD_165_195; - mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | - MMC_MODE_HC; + mmc->host_caps = (MMC_MODE_4BIT | MMC_MODE_HS_52MHz | MMC_MODE_HS | + MMC_MODE_HC) & ~host_caps_mask; mmc->f_min = 400000; - mmc->f_max = 52000000; + + if (f_max != 0) + mmc->f_max = f_max; + else { + if (mmc->host_caps & MMC_MODE_HS) { + if (mmc->host_caps & MMC_MODE_HS_52MHz) + mmc->f_max = 52000000; + else + mmc->f_max = 26000000; + } else + mmc->f_max = 20000000; + } mmc->b_max = 0; |