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bdk: sdmmc: correct lower speed mode checks

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Both bus widths of 8 and 4 should be checked for HS200 support and host type support, instead of giving 8-bit bus width a free pass.
This commit is contained in:
CTCaer 2022-05-26 03:04:27 +03:00
parent 358896eb7d
commit c77c741c07
1 changed files with 16 additions and 14 deletions
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30
bdk/storage/sdmmc.c
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@ -566,21 +566,21 @@ static int _mmc_storage_switch_buswidth(sdmmc_storage_t *storage, u32 bus_width)
return 0; return 0;
} }
static int _mmc_storage_enable_HS(sdmmc_storage_t *storage, int check) static int _mmc_storage_enable_HS(sdmmc_storage_t *storage, bool check_sts_before_clk_setup)
{ {
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS))) if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_HS_TIMING, EXT_CSD_TIMING_HS)))
return 0; return 0;
if (check && !_sdmmc_storage_check_status(storage)) if (check_sts_before_clk_setup && !_sdmmc_storage_check_status(storage))
return 0; return 0;
if (!sdmmc_setup_clock(storage->sdmmc, SDHCI_TIMING_MMC_HS52)) if (!sdmmc_setup_clock(storage->sdmmc, SDHCI_TIMING_MMC_HS52))
return 0; return 0;
DPRINTF("[MMC] switched to HS\n"); DPRINTF("[MMC] switched to HS52\n");
storage->csd.busspeed = 52; storage->csd.busspeed = 52;
if (check || _sdmmc_storage_check_status(storage)) if (check_sts_before_clk_setup || _sdmmc_storage_check_status(storage))
return 1; return 1;
return 0; return 0;
@ -610,7 +610,7 @@ static int _mmc_storage_enable_HS400(sdmmc_storage_t *storage)
sdmmc_save_tap_value(storage->sdmmc); sdmmc_save_tap_value(storage->sdmmc);
if (!_mmc_storage_enable_HS(storage, 0)) if (!_mmc_storage_enable_HS(storage, false))
return 0; return 0;
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_BUS_WIDTH, EXT_CSD_DDR_BUS_WIDTH_8))) if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_WRITE_BYTE, EXT_CSD_BUS_WIDTH, EXT_CSD_DDR_BUS_WIDTH_8)))
@ -631,27 +631,29 @@ DPRINTF("[MMC] switched to HS400\n");
static int _mmc_storage_enable_highspeed(sdmmc_storage_t *storage, u32 card_type, u32 type) static int _mmc_storage_enable_highspeed(sdmmc_storage_t *storage, u32 card_type, u32 type)
{ {
if (sdmmc_get_io_power(storage->sdmmc) != SDMMC_POWER_1_8) if (sdmmc_get_io_power(storage->sdmmc) != SDMMC_POWER_1_8)
goto out; goto hs52_mode;
// HS400 needs 8-bit bus width mode.
if (sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 && if (sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 &&
card_type & EXT_CSD_CARD_TYPE_HS400_1_8V && type == SDHCI_TIMING_MMC_HS400) card_type & EXT_CSD_CARD_TYPE_HS400_1_8V && type == SDHCI_TIMING_MMC_HS400)
return _mmc_storage_enable_HS400(storage); return _mmc_storage_enable_HS400(storage);
if (sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 || // Try HS200 if HS400 and 4-bit width bus or just HS200.
(sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_4 if ((sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_8 ||
&& card_type & EXT_CSD_CARD_TYPE_HS200_1_8V sdmmc_get_bus_width(storage->sdmmc) == SDMMC_BUS_WIDTH_4) &&
&& (type == SDHCI_TIMING_MMC_HS400 || type == SDHCI_TIMING_MMC_HS200))) card_type & EXT_CSD_CARD_TYPE_HS200_1_8V &&
(type == SDHCI_TIMING_MMC_HS400 || type == SDHCI_TIMING_MMC_HS200))
return _mmc_storage_enable_HS200(storage); return _mmc_storage_enable_HS200(storage);
out: hs52_mode:
if (card_type & EXT_CSD_CARD_TYPE_HS_52) if (card_type & EXT_CSD_CARD_TYPE_HS_52)
return _mmc_storage_enable_HS(storage, 1); return _mmc_storage_enable_HS(storage, true);
return 1; return 1;
} }
/* /*
static int _mmc_storage_enable_bkops(sdmmc_storage_t *storage) static int _mmc_storage_enable_auto_bkops(sdmmc_storage_t *storage)
{ {
if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_SET_BITS, EXT_CSD_BKOPS_EN, EXT_CSD_AUTO_BKOPS_MASK))) if (!_mmc_storage_switch(storage, SDMMC_SWITCH(MMC_SWITCH_MODE_SET_BITS, EXT_CSD_BKOPS_EN, EXT_CSD_AUTO_BKOPS_MASK)))
return 0; return 0;
@ -723,7 +725,7 @@ DPRINTF("[MMC] got ext_csd\n");
/* /*
if (storage->ext_csd.bkops & 0x1 && !(storage->ext_csd.bkops_en & EXT_CSD_AUTO_BKOPS_MASK)) if (storage->ext_csd.bkops & 0x1 && !(storage->ext_csd.bkops_en & EXT_CSD_AUTO_BKOPS_MASK))
{ {
_mmc_storage_enable_bkops(storage); _mmc_storage_enable_auto_bkops(storage);
DPRINTF("[MMC] BKOPS enabled\n"); DPRINTF("[MMC] BKOPS enabled\n");
} }
*/ */