kernel/rockchip: Create kernel files for v6.6 (from v6.1)

[openwrt/openwrt.git] / target / linux / rockchip / patches-6.6 / 105-nanopi-r4s-sd-signalling.patch

diff --git a/target/linux/rockchip/patches-6.6/105-nanopi-r4s-sd-signalling.patch b/target/linux/rockchip/patches-6.6/105-nanopi-r4s-sd-signalling.patch
new file mode 100644 (file)
index 0000000..b3c9418
--- /dev/null
+++ b/target/linux/rockchip/patches-6.6/105-nanopi-r4s-sd-signalling.patch
@@ -0,0 +1,36 @@
+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>;
+ };