From c8d2d76d7646dc9b2d377699f68dce5403ad9b80 Mon Sep 17 00:00:00 2001 From: Andy Tang Date: Fri, 2 Dec 2022 15:59:05 +0800 Subject: [PATCH] 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 Link: https://lore.kernel.org/r/20221202075905.25363-1-andy.tang@nxp.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-of-esdhc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-esdhc.c b/drivers/mmc/host/sdhci-of-esdhc.c index e026663..9d875bb 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}, -- 2.7.4