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| author | Xiaolei Wang <xiaolei.wang@windriver.com> | 2023-07-24 18:45:10 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2023-07-30 16:25:59 +0300 |
| commit | be18293e47cbca7c6acee9231fc851601d69563a (patch) | |
| tree | 1c51977d257dec8bf05232d4a85c1edf237a92a6 /arch/arm | |
| parent | 762b700982a1e0f562184363f19860c3b9bdd0bf (diff) | |
| download | linux-be18293e47cbca7c6acee9231fc851601d69563a.tar.xz | |
ARM: dts: imx: Set default tuning step for imx7d usdhc
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
mmc0: 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/imx7s.dtsi#L1216-L1217
Fixes: 1e336aa0c025 ("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>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/nxp/imx/imx7s.dtsi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi index 54026c2c93fa..6ffb428dc939 100644 --- a/arch/arm/boot/dts/nxp/imx/imx7s.dtsi +++ b/arch/arm/boot/dts/nxp/imx/imx7s.dtsi @@ -1184,6 +1184,8 @@ <&clks IMX7D_USDHC1_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; @@ -1196,6 +1198,8 @@ <&clks IMX7D_USDHC2_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; @@ -1208,6 +1212,8 @@ <&clks IMX7D_USDHC3_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; |