From b2af322792d64d3748b9915cbcbd031dd035d7e2 Mon Sep 17 00:00:00 2001 From: Rashmi A Date: Thu, 3 Jun 2021 23:52:41 +0530 Subject: [PATCH] mmc: sdhci-of-arasan: Use clock-frequency property to update clk_xin If clock-frequency property is set and it is not the same as the current clock rate of clk_xin(base clock frequency), set clk_xin to use the provided clock rate. Signed-off-by: Rashmi A Reviewed-by: Adrian Hunter Tested-by: Sai Krishna Potthuri Link: https://lore.kernel.org/r/20210603182242.25733-2-rashmi.a@intel.com Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-of-arasan.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index 839965f..0e7c07e 100644 --- a/drivers/mmc/host/sdhci-of-arasan.c +++ b/drivers/mmc/host/sdhci-of-arasan.c @@ -1542,6 +1542,8 @@ static int sdhci_arasan_probe(struct platform_device *pdev) } } + sdhci_get_of_property(pdev); + sdhci_arasan->clk_ahb = devm_clk_get(dev, "clk_ahb"); if (IS_ERR(sdhci_arasan->clk_ahb)) { ret = dev_err_probe(dev, PTR_ERR(sdhci_arasan->clk_ahb), @@ -1561,14 +1563,22 @@ static int sdhci_arasan_probe(struct platform_device *pdev) goto err_pltfm_free; } + /* If clock-frequency property is set, use the provided value */ + if (pltfm_host->clock && + pltfm_host->clock != clk_get_rate(clk_xin)) { + ret = clk_set_rate(clk_xin, pltfm_host->clock); + if (ret) { + dev_err(&pdev->dev, "Failed to set SD clock rate\n"); + goto clk_dis_ahb; + } + } + ret = clk_prepare_enable(clk_xin); if (ret) { dev_err(dev, "Unable to enable SD clock.\n"); goto clk_dis_ahb; } - sdhci_get_of_property(pdev); - if (of_property_read_bool(np, "xlnx,fails-without-test-cd")) sdhci_arasan->quirks |= SDHCI_ARASAN_QUIRK_FORCE_CDTEST; -- 2.7.4