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ARM: dts: imx: Set default tuning step for imx6sx usdhc
[ Upstream commit0a2b96e42a
] If the tuning step is not set, the tuning step is set to 1. For some sd cards, the following Tuning timeout will occur. Tuning failed, falling back to fixed sampling clock So set the default tuning step. This refers to the NXP vendor's commit below: https://github.com/nxp-imx/linux-imx/blob/lf-6.1.y/ arch/arm/boot/dts/imx6sx.dtsi#L1108-L1109 Fixes:1e336aa0c0
("mmc: sdhci-esdhc-imx: correct the tuning start tap and step setting") Signed-off-by: Xiaolei Wang <xiaolei.wang@windriver.com> Reviewed-by: Fabio Estevam <festevam@gmail.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 6 additions and 0 deletions
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@ -981,6 +981,8 @@
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<&clks IMX6SX_CLK_USDHC1>;
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clock-names = "ipg", "ahb", "per";
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bus-width = <4>;
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fsl,tuning-start-tap = <20>;
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fsl,tuning-step= <2>;
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status = "disabled";
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};
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@ -993,6 +995,8 @@
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<&clks IMX6SX_CLK_USDHC2>;
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clock-names = "ipg", "ahb", "per";
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bus-width = <4>;
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fsl,tuning-start-tap = <20>;
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fsl,tuning-step= <2>;
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status = "disabled";
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};
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@ -1005,6 +1009,8 @@
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<&clks IMX6SX_CLK_USDHC3>;
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clock-names = "ipg", "ahb", "per";
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bus-width = <4>;
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fsl,tuning-start-tap = <20>;
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fsl,tuning-step= <2>;
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status = "disabled";
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};
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