diff options
| author | Jonas Karlman | 2023-04-18 16:46:33 +0000 |
|---|---|---|
| committer | Kever Yang | 2023-04-21 15:55:29 +0800 |
| commit | 6de4438576ed5c8e099b52f5ee6ad549dca6aa9d (patch) | |
| tree | ca4a5eed0a2b499071eccd44fac416d6848cd8dd /drivers | |
| parent | ba9f5e541d78b7200fc7fa56e4e056c3b92ea451 (diff) | |
mmc: rockchip_sdhci: Update speed mode controls in set_ios_post
Refactor set_ios_post ops to correctly set UHS Speed Select field values
according to TRM. Also set or unset Enhanced Strobe Enable bit and
eMMC Card present bit in set_ios_post, the Enhanced Strobe Enable bit
was never unset after switching to HS400ES mode.
Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/rockchip_sdhci.c | 68 |
1 files changed, 42 insertions, 26 deletions
diff --git a/drivers/mmc/rockchip_sdhci.c b/drivers/mmc/rockchip_sdhci.c index e56043fce88..8e29430a483 100644 --- a/drivers/mmc/rockchip_sdhci.c +++ b/drivers/mmc/rockchip_sdhci.c @@ -372,20 +372,6 @@ static int rk3568_emmc_get_phy(struct udevice *dev) static int rk3568_sdhci_set_enhanced_strobe(struct sdhci_host *host) { - struct mmc *mmc = host->mmc; - u32 vendor; - int reg; - - reg = (sdhci_readl(host, DWCMSHC_P_VENDOR_AREA1) & DWCMSHC_AREA1_MASK) - + DWCMSHC_EMMC_CONTROL; - - vendor = sdhci_readl(host, reg); - if (mmc->selected_mode == MMC_HS_400_ES) - vendor |= DWCMSHC_ENHANCED_STROBE; - else - vendor &= ~DWCMSHC_ENHANCED_STROBE; - sdhci_writel(host, vendor, reg); - return 0; } @@ -394,21 +380,51 @@ static int rk3568_sdhci_set_ios_post(struct sdhci_host *host) struct mmc *mmc = host->mmc; u32 reg, vendor_reg; - if (mmc->selected_mode == MMC_HS_400 || mmc->selected_mode == MMC_HS_400_ES) { - reg = sdhci_readw(host, SDHCI_HOST_CONTROL2); - reg &= ~SDHCI_CTRL_UHS_MASK; + reg = sdhci_readw(host, SDHCI_HOST_CONTROL2); + reg &= ~SDHCI_CTRL_UHS_MASK; + + switch (mmc->selected_mode) { + case UHS_SDR25: + case MMC_HS: + case MMC_HS_52: + reg |= SDHCI_CTRL_UHS_SDR25; + break; + case UHS_SDR50: + reg |= SDHCI_CTRL_UHS_SDR50; + break; + case UHS_DDR50: + case MMC_DDR_52: + reg |= SDHCI_CTRL_UHS_DDR50; + break; + case UHS_SDR104: + case MMC_HS_200: + reg |= SDHCI_CTRL_UHS_SDR104; + break; + case MMC_HS_400: + case MMC_HS_400_ES: reg |= DWCMSHC_CTRL_HS400; - sdhci_writew(host, reg, SDHCI_HOST_CONTROL2); + break; + default: + reg |= SDHCI_CTRL_UHS_SDR12; + } + + sdhci_writew(host, reg, SDHCI_HOST_CONTROL2); - vendor_reg = (sdhci_readl(host, DWCMSHC_P_VENDOR_AREA1) & DWCMSHC_AREA1_MASK) - + DWCMSHC_EMMC_CONTROL; - /* set CARD_IS_EMMC bit to enable Data Strobe for HS400 */ - reg = sdhci_readw(host, vendor_reg); + vendor_reg = (sdhci_readl(host, DWCMSHC_P_VENDOR_AREA1) & DWCMSHC_AREA1_MASK) + + DWCMSHC_EMMC_CONTROL; + reg = sdhci_readw(host, vendor_reg); + + if (IS_MMC(mmc)) reg |= DWCMSHC_CARD_IS_EMMC; - sdhci_writew(host, reg, vendor_reg); - } else { - sdhci_set_uhs_timing(host); - } + else + reg &= ~DWCMSHC_CARD_IS_EMMC; + + if (mmc->selected_mode == MMC_HS_400_ES) + reg |= DWCMSHC_ENHANCED_STROBE; + else + reg &= ~DWCMSHC_ENHANCED_STROBE; + + sdhci_writew(host, reg, vendor_reg); return 0; } |