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mmc: renesas_sdhi: Parse DT for SDnH 

If there is a SDnH clock provided in DT, let's use it instead of relying
on the fallback.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Link: https://lore.kernel.org/r/20211110191610.5664-21-wsa+renesas@sang-engineering.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Wolfram Sang 2021-11-10 20:16:09 +01:00 committed by Geert Uytterhoeven
parent 079e83b958
commit e5f7e81ee4
1 changed files with 5 additions and 1 deletions
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6
drivers/mmc/host/renesas_sdhi_core.c
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@ -921,6 +921,10 @@ int renesas_sdhi_probe(struct platform_device *pdev,
if (IS_ERR(priv->clk))
return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk), "cannot get clock");
priv->clkh = devm_clk_get_optional(&pdev->dev, "clkh");
if (IS_ERR(priv->clkh))
return dev_err_probe(&pdev->dev, PTR_ERR(priv->clkh), "cannot get clkh");
/*
* Some controllers provide a 2nd clock just to run the internal card
* detection logic. Unfortunately, the existing driver architecture does
@ -959,7 +963,7 @@ int renesas_sdhi_probe(struct platform_device *pdev,
dma_priv->dma_buswidth = of_data->dma_buswidth;
host->bus_shift = of_data->bus_shift;
/* Fallback for old DTs */
if (of_data->sdhi_flags & SDHI_FLAG_NEED_CLKH_FALLBACK)
if (!priv->clkh && of_data->sdhi_flags & SDHI_FLAG_NEED_CLKH_FALLBACK)
priv->clkh = clk_get_parent(clk_get_parent(priv->clk));
}