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| author | Rashmi A <rashmi.a@intel.com> | 2021-06-03 23:52:41 +0530 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2021-06-29 16:45:16 +0200 |
| commit | b2af322792d64d3748b9915cbcbd031dd035d7e2 (patch) | |
| tree | 72b73eae000e9cea541074c679fbdbfb1e41fcbb /drivers/mmc | |
| parent | 77347eda64ed5c9383961d1de9165f9d0b7d8df6 (diff) | |
| download | linux-b2af322792d64d3748b9915cbcbd031dd035d7e2.tar.gz linux-b2af322792d64d3748b9915cbcbd031dd035d7e2.tar.bz2 linux-b2af322792d64d3748b9915cbcbd031dd035d7e2.zip | |
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 <rashmi.a@intel.com>
Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Link: https://lore.kernel.org/r/20210603182242.25733-2-rashmi.a@intel.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/sdhci-of-arasan.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/mmc/host/sdhci-of-arasan.c b/drivers/mmc/host/sdhci-of-arasan.c index 839965f7c717..0e7c07ed9690 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; |