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openwrt/target/linux/rockchip/patches-6.6/105-nanopi-r4s-sd-signalling.patch
Antonio Flores ddfd526140 kernel/rockchip: Create kernel files for v6.6 (from v6.1)
This is an automatically generated commit.

When doing `git bisect`, consider `git bisect --skip`.

Signed-off-by: Antonio Flores <antflores627@gmail.com>
2024-05-07 00:17:12 +02:00

37 lines
1022 B
Diff

From: David Bauer <mail@david-bauer.net>
Subject: arm64: dts: rockchip: disable UHS modes for NanoPi R4S
The NanoPi R4S leaves the SD card in 1.8V signalling when rebooting
while U-Boot requires the card to be in 3.3V mode.
Remove UHS support from the SD controller so the card remains in 3.3V
mode. This reduces transfer speeds but ensures a reboot whether from
userspace or following a kernel panic is always working.
Signed-off-by: David Bauer <mail@david-bauer.net>
--- a/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts
@@ -335,7 +335,6 @@
sd-uhs-sdr12;
sd-uhs-sdr25;
sd-uhs-sdr50;
- sd-uhs-sdr104;
vmmc-supply = <&vcc_sd>;
vqmmc-supply = <&vcc_sdio>;
status = "okay";
--- a/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-nanopi-r4s.dts
@@ -112,6 +112,11 @@
status = "disabled";
};
+&sdmmc {
+ /delete-property/ sd-uhs-sdr104;
+ cap-sd-highspeed;
+};
+
&u2phy0_host {
phy-supply = <&vdd_5v>;
};