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Add lv support back and fix its change logic

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This commit is contained in:
Kostas Missos 2018-05-06 20:26:30 +03:00
parent 884ad1f6e6
commit 5a775ebb72
2 changed files with 13 additions and 6 deletions
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5
ipl/sdmmc.c
View file

@ -520,7 +520,7 @@ static int _sd_storage_get_op_cond(sdmmc_storage_t *storage, int is_version_1, i
storage->has_sector_access = 1;
// TODO: Some SD Card incorrectly report low voltage support
// Disable it for now
if (cond & 0x1000000 && supports_low_voltage && 0)
if (cond & 0x1000000 && supports_low_voltage)
{
//The low voltage regulator configuration is valid for SDMMC1 only.
if (storage->sdmmc->id == SDMMC_1 &&
@ -794,7 +794,8 @@ int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32
memcpy(storage->scr, buf, 8);
DPRINTF("[sd] got scr\n");
if (bus_width == SDMMC_BUS_WIDTH_4 && storage->scr[1] & 4)
// Check if card supports a wider bus and if it's not SD Version 1.0
if (bus_width == SDMMC_BUS_WIDTH_4 && storage->scr[1] & 4 && (storage->scr[0] & 0xF))
{
if (!_sd_storage_execute_app_cmd_type1(storage, &tmp, SD_APP_SET_BUS_WIDTH, SD_BUS_WIDTH_4, 0, R1_STATE_TRAN))
{

14
ipl/sdmmc_driver.c
View file

@ -54,24 +54,30 @@ int sdmmc_get_voltage(sdmmc_t *sdmmc)
static int _sdmmc_set_voltage(sdmmc_t *sdmmc, u32 power)
{
u8 pwr = 0;
switch (power)
{
case SDMMC_POWER_OFF:
sdmmc->regs->pwrcon &= ~TEGRA_MMC_PWRCTL_SD_BUS_POWER;
break;
case SDMMC_POWER_1_8:
sdmmc->regs->pwrcon =
(sdmmc->regs->pwrcon & TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_MASK) |
TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V1_8;
sdmmc->regs->pwrcon = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V1_8;
pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V1_8;
break;
case SDMMC_POWER_3_3:
sdmmc->regs->pwrcon = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_3;
pwr = TEGRA_MMC_PWRCTL_SD_BUS_VOLTAGE_V3_3;
break;
default:
return 0;
}
sdmmc->regs->pwrcon |= TEGRA_MMC_PWRCTL_SD_BUS_POWER;
if (power != SDMMC_POWER_OFF)
{
pwr |= TEGRA_MMC_PWRCTL_SD_BUS_POWER;
sdmmc->regs->pwrcon = pwr;
}
return 1;
}