diff options
| author | Giulio Benetti <[email protected]> | 2023-08-11 23:48:53 +0200 |
|---|---|---|
| committer | Ulf Hansson <[email protected]> | 2023-08-18 11:14:13 +0200 |
| commit | 5ae4b0d8875caa44946e579420c7fd5740d58653 (patch) | |
| tree | c3136386fcaa36019584941dbe25c0725b33ea5c | |
| parent | 899171dc4e7ce9ac90b27610d79ea511402e60c0 (diff) | |
mmc: sdhci-esdhc-imx: improve ESDHC_FLAG_ERR010450
Errata ERR010450 only shows up if voltage is 1.8V, but if the device is
supplied by 3v3 the errata can be ignored. So let's check for if quirk
SDHCI_QUIRK2_NO_1_8_V is defined or not before limiting the frequency.
Cc: Jim Reinhart <[email protected]>
Cc: James Autry <[email protected]>
Cc: Matthew Maron <[email protected]>
Signed-off-by: Giulio Benetti <[email protected]>
Acked-by: Haibo Chen <[email protected]>
Acked-by: Adrian Hunter <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Ulf Hansson <[email protected]>
| -rw-r--r-- | drivers/mmc/host/sdhci-esdhc-imx.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c index a8bdb3c5ecd5..3b8030f3552a 100644 --- a/drivers/mmc/host/sdhci-esdhc-imx.c +++ b/drivers/mmc/host/sdhci-esdhc-imx.c @@ -171,8 +171,8 @@ #define ESDHC_FLAG_HS400 BIT(9) /* * The IP has errata ERR010450 - * uSDHC: Due to the I/O timing limit, for SDR mode, SD card clock can't - * exceed 150MHz, for DDR mode, SD card clock can't exceed 45MHz. + * uSDHC: At 1.8V due to the I/O timing limit, for SDR mode, SD card + * clock can't exceed 150MHz, for DDR mode, SD card clock can't exceed 45MHz. */ #define ESDHC_FLAG_ERR010450 BIT(10) /* The IP supports HS400ES mode */ @@ -961,7 +961,8 @@ static inline void esdhc_pltfm_set_clock(struct sdhci_host *host, | ESDHC_CLOCK_MASK); sdhci_writel(host, temp, ESDHC_SYSTEM_CONTROL); - if (imx_data->socdata->flags & ESDHC_FLAG_ERR010450) { + if ((imx_data->socdata->flags & ESDHC_FLAG_ERR010450) && + (!(host->quirks2 & SDHCI_QUIRK2_NO_1_8_V))) { unsigned int max_clock; max_clock = imx_data->is_ddr ? 45000000 : 150000000; |