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mmc: sdhci-of-dwcmshc: Don't gate bus clock for RPM

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Gate bus clock will make DLL module lost tuning value.

Change-Id: I3af2d7c6601acbdeb4eb732e597d7d5725e0354b
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
This commit is contained in:
Shawn Lin
2020-12-16 11:38:38 +08:00
committed by Tao Huang
parent 0fa85aaa6c
commit e66979ea8b
1 changed files with 6 additions and 23 deletions
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29
drivers/mmc/host/sdhci-of-dwcmshc.c
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@@ -61,6 +61,7 @@ struct dwcmshc_priv {
/* Rockchip specified optional clocks */
struct clk_bulk_data rockchip_clks[ROCKCHIP_MAX_CLKS];
int txclk_tapnum;
unsigned int actual_clk;
};
/*
@@ -417,16 +418,11 @@ static int dwcmshc_runtime_suspend(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
int ret;
ret = sdhci_runtime_suspend_host(host);
priv->actual_clk = host->mmc->actual_clock;
sdhci_set_clock(host, 0);
clk_disable_unprepare(pltfm_host->clk);
if (!IS_ERR(priv->bus_clk))
clk_disable_unprepare(priv->bus_clk);
clk_bulk_disable_unprepare(ROCKCHIP_MAX_CLKS, priv->rockchip_clks);
return ret;
return 0;
}
static int dwcmshc_runtime_resume(struct device *dev)
@@ -434,23 +430,10 @@ static int dwcmshc_runtime_resume(struct device *dev)
struct sdhci_host *host = dev_get_drvdata(dev);
struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
struct dwcmshc_priv *priv = sdhci_pltfm_priv(pltfm_host);
int ret;
ret = clk_prepare_enable(pltfm_host->clk);
if (ret)
return ret;
sdhci_set_clock(host, priv->actual_clk);
if (!IS_ERR(priv->bus_clk)) {
ret = clk_prepare_enable(priv->bus_clk);
if (ret)
return ret;
}
ret = clk_bulk_prepare_enable(ROCKCHIP_MAX_CLKS, priv->rockchip_clks);
if (ret)
return ret;
return sdhci_runtime_resume_host(host);
return 0;
}
#endif