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b0e869501a
The previously stated speed of sdr-104 in is too high for the hardware to reliably communicate with some fast SD cards. Rockchip boards have a common bug when operating uhs speed, which will hang the system during a soft reboot. To be on the safe side, lower the speed to workaround. Signed-off-by: Tianling Shen <cnsztl@immortalwrt.org>
37 lines
1022 B
Diff
37 lines
1022 B
Diff
From: David Bauer <mail@david-bauer.net>
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Subject: arm64: dts: rockchip: disable UHS modes for NanoPi R4S
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The NanoPi R4S leaves the SD card in 1.8V signalling when rebooting
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while U-Boot requires the card to be in 3.3V mode.
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Remove UHS support from the SD controller so the card remains in 3.3V
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mode. This reduces transfer speeds but ensures a reboot whether from
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userspace or following a kernel panic is always working.
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Signed-off-by: David Bauer <mail@david-bauer.net>
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--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
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@@ -335,7 +335,6 @@
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sd-uhs-sdr12;
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sd-uhs-sdr25;
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sd-uhs-sdr50;
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- sd-uhs-sdr104;
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vmmc-supply = <&vcc_sd>;
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vqmmc-supply = <&vcc_sdio>;
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status = "okay";
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--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
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+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
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@@ -121,6 +121,11 @@
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status = "disabled";
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};
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+&sdmmc {
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+ /delete-property/ sd-uhs-sdr104;
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+ cap-sd-highspeed;
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+};
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+
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&u2phy0_host {
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phy-supply = <&vdd_5v>;
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};
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