Commit 886201c7 authored by Kamal Dasu's avatar Kamal Dasu Committed by Ulf Hansson
Browse files

mmc: sdhci-brcmstb: use clk_get_rate(base_clk) in PM resume 



Use clk_get_rate for base_clk on resume before setting new rate.
This change ensures that the clock api returns current rate
and sets the clock to the desired rate and honors CLK_GET_NO_CACHE
attribute used by clock api.

Fixes: 97904a59 (mmc: sdhci-brcmstb: Add ability to increase max clock rate for 72116b0)
Signed-off-by: default avatarKamal Dasu <kdasu.kdev@gmail.com>
Acked-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220714174132.18541-1-kdasu.kdev@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 99ce0f75

drivers/mmc/host/sdhci-brcmstb.c

+8 −1
Original line number Diff line number Diff line
@@ -406,7 +406,14 @@ static int sdhci_brcmstb_resume(struct device *dev) 
	ret = sdhci_pltfm_resume(dev);

	if (!ret && priv->base_freq_hz) {

		ret = clk_prepare_enable(priv->base_clk);

		if (!ret)

		/*

		 * Note: using clk_get_rate() below as clk_get_rate()

		 * honors CLK_GET_RATE_NOCACHE attribute, but clk_set_rate()

		 * may do implicit get_rate() calls that do not honor

		 * CLK_GET_RATE_NOCACHE.

		 */

		if (!ret &&

		    (clk_get_rate(priv->base_clk) != priv->base_freq_hz))

			ret = clk_set_rate(priv->base_clk, priv->base_freq_hz);

	}