mvebu: gl-mv1000: add devicetree patch for sdhci1

GL-MV1000 external SD controller was broken by a recent kernel update
due to a mistake in Device Tree: "regulator-gpio" was defined without
required "gpios" property.

Removing this regulator definition from the device tree fixes this issue
without any side effects so far.

"main" branch uses upstream devicetree for this device, so add a kernel
patch for the "mvebu" kernel family.

Relevant discussions:
https://github.com/openwrt/openwrt/issues/20309
https://github.com/openwrt/openwrt/pull/20378

Signed-off-by: Mikhail Zadorozhnyi <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20390
Signed-off-by: Robert Marko <[email protected]>

diff --git a/target/linux/mvebu/patches-6.12/326-arm64-dts-marvell-glinet-mv1000-fix-sdhci1.patch b/target/linux/mvebu/patches-6.12/326-arm64-dts-marvell-glinet-mv1000-fix-sdhci1.patch
new file mode 100644 (file)
index 0000000..78fe52d
--- /dev/null
+++ b/target/linux/mvebu/patches-6.12/326-arm64-dts-marvell-glinet-mv1000-fix-sdhci1.patch
@@ -0,0 +1,53 @@
+From 5f20749c2dbbbc0f4f3c5bd1c4067388ab760960 Mon Sep 17 00:00:00 2001
+From: Mikhail Zadorozhnyi <[email protected]>
+Date: Sat, 11 Oct 2025 20:22:07 +0300
+Subject: [PATCH] arm64: dts: marvell: fix sdhci1 controller for gl-mv1000
+
+GL-MV1000 external SD controller was broken by a recent kernel update
+due to a mistake in Device Tree: "regulator-gpio" was defined without
+required "gpios" property.
+
+Since "no-1-8-v" property is also defined for this controller
+a switchable vqmmc-supply regulator performs no function - a fixed 3.3V
+IO voltage will always be used.
+
+This regulator definition was probably added by mistake from a Device
+Tree from another device.
+
+Remove incomplete vcc_sd_reg1 regulator definition to fix this issue.
+
+Signed-off-by: Mikhail Zadorozhnyi <[email protected]>
+---
+ .../boot/dts/marvell/armada-3720-gl-mv1000.dts     | 14 --------------
+ 1 file changed, 14 deletions(-)
+
+--- a/arch/arm64/boot/dts/marvell/armada-3720-gl-mv1000.dts
++++ b/arch/arm64/boot/dts/marvell/armada-3720-gl-mv1000.dts
+@@ -26,19 +26,6 @@
+               reg = <0x00000000 0x00000000 0x00000000 0x20000000>;
+       };
+ 
+-      vcc_sd_reg1: regulator {
+-              compatible = "regulator-gpio";
+-              regulator-name = "vcc_sd1";
+-              regulator-min-microvolt = <1800000>;
+-              regulator-max-microvolt = <3300000>;
+-              regulator-boot-on;
+-
+-              gpios-states = <0>;
+-              states = <1800000 0x1
+-                      3300000 0x0>;
+-              enable-active-high;
+-      };
+-
+       keys {
+               compatible = "gpio-keys";
+ 
+@@ -135,7 +122,6 @@
+       cd-gpios = <&gpionb 17 GPIO_ACTIVE_LOW>;
+       marvell,pad-type = "sd";
+       no-1-8-v;
+-      vqmmc-supply = <&vcc_sd_reg1>;
+       status = "okay";
+ };
+