Commit b2af3227 authored by Rashmi A's avatar Rashmi A Committed by Ulf Hansson
Browse files

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: default avatarRashmi A <rashmi.a@intel.com>
Reviewed-by: default avatarAdrian Hunter <adrian.hunter@intel.com>
Tested-by: default avatarSai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Link: https://lore.kernel.org/r/20210603182242.25733-2-rashmi.a@intel.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 77347eda

drivers/mmc/host/sdhci-of-arasan.c

+12 −2
Original line number Diff line number Diff line
@@ -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;