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| author | Xiaolei Wang <xiaolei.wang@windriver.com> | 2023-07-24 18:45:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-19 13:20:04 +0300 |
| commit | a8ba2b695955a40d80567d58e41952f2705cf77b (patch) | |
| tree | 8aae40831510cb2859e7156a4a1bf3852f473920 /arch/arm/boot/dts | |
| parent | 678a88ac02e5fcdaad49e7fb0155ed5f9828421d (diff) | |
| download | linux-a8ba2b695955a40d80567d58e41952f2705cf77b.tar.xz | |
ARM: dts: imx: Set default tuning step for imx7d usdhc
[ Upstream commit be18293e47cbca7c6acee9231fc851601d69563a ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts')
| -rw-r--r-- | arch/arm/boot/dts/imx7s.dtsi | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi index 2b664d457b46..854c380cccea 100644 --- a/arch/arm/boot/dts/imx7s.dtsi +++ b/arch/arm/boot/dts/imx7s.dtsi @@ -1137,6 +1137,8 @@ <&clks IMX7D_USDHC1_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; @@ -1149,6 +1151,8 @@ <&clks IMX7D_USDHC2_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; @@ -1161,6 +1165,8 @@ <&clks IMX7D_USDHC3_ROOT_CLK>; clock-names = "ipg", "ahb", "per"; bus-width = <4>; + fsl,tuning-step = <2>; + fsl,tuning-start-tap = <20>; status = "disabled"; }; |