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| author | Andy Tang <andy.tang@nxp.com> | 2022-12-02 15:59:05 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2022-12-07 13:29:14 +0100 |
| commit | c8d2d76d7646dc9b2d377699f68dce5403ad9b80 (patch) | |
| tree | 21e9ec0c5bc507bb543ba0a1f155df50f6946be8 /drivers/mmc | |
| parent | 496182a389627a60d1b12be32d1640b14c678b8b (diff) | |
| download | linux-stable-c8d2d76d7646dc9b2d377699f68dce5403ad9b80.tar.gz linux-stable-c8d2d76d7646dc9b2d377699f68dce5403ad9b80.tar.bz2 linux-stable-c8d2d76d7646dc9b2d377699f68dce5403ad9b80.zip | |
mmc: sdhci-of-esdhc: limit the SDHC clock frequency
The highest clock frequency for eMMC HS200 mode on ls1043a
is 116.7Mhz according to its specification.
So add the limit to gate the frequency.
Signed-off-by: Andy Tang <andy.tang@nxp.com>
Link: https://lore.kernel.org/r/20221202075905.25363-1-andy.tang@nxp.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-of-esdhc.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index e0266638381d..9d875bb531a8 100644 --- a/drivers/mmc/host/sdhci-of-esdhc.c +++ b/drivers/mmc/host/sdhci-of-esdhc.c @@ -42,6 +42,12 @@ static const struct esdhc_clk_fixup ls1021a_esdhc_clk = { .max_clk[MMC_TIMING_SD_HS] = 46500000, }; +static const struct esdhc_clk_fixup ls1043a_esdhc_clk = { + .sd_dflt_max_clk = 25000000, + .max_clk[MMC_TIMING_UHS_SDR104] = 116700000, + .max_clk[MMC_TIMING_MMC_HS200] = 116700000, +}; + static const struct esdhc_clk_fixup ls1046a_esdhc_clk = { .sd_dflt_max_clk = 25000000, .max_clk[MMC_TIMING_UHS_SDR104] = 167000000, @@ -63,6 +69,7 @@ static const struct esdhc_clk_fixup p1010_esdhc_clk = { static const struct of_device_id sdhci_esdhc_of_match[] = { { .compatible = "fsl,ls1021a-esdhc", .data = &ls1021a_esdhc_clk}, + { .compatible = "fsl,ls1043a-esdhc", .data = &ls1043a_esdhc_clk}, { .compatible = "fsl,ls1046a-esdhc", .data = &ls1046a_esdhc_clk}, { .compatible = "fsl,ls1012a-esdhc", .data = &ls1012a_esdhc_clk}, { .compatible = "fsl,p1010-esdhc", .data = &p1010_esdhc_clk}, |