This is a note to let you know that I've just added the patch titled
arm64: dts: meson: bananapi-m5: switch VDDIO_C pin to OPEN_DRAIN
to the 6.2-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-dts-meson-bananapi-m5-switch-vddio_c-pin-to-op.patch
and it can be found in the queue-6.2 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f7dc8770fdfbde8807fb3bacbb8fd9be28622ef5
Author: Christian Hewitt <christianshewitt@xxxxxxxxx>
Date: Fri Jan 27 14:22:17 2023 +0000
arm64: dts: meson: bananapi-m5: switch VDDIO_C pin to OPEN_DRAIN
[ Upstream commit 856968e066bd77b113965f1a355ec7401edff65f ]
For proper warm (re)boot from SD card the BPI-M5 board requires TFLASH_VDD_EN
and VDDIO_C pins to be switched to high impedance mode. This can be achieved
using OPEN_DRAIN instead of ACTIVE_HIGH to leave the GPIO pins in input mode
and retain high state (pin has the pull-up).
This change is inspired by meson-sm1-odroid.dtsi where OPEN_DRAIN has been
used to resolve similar problems with the Odroid C4 board (TF_IO in the C4
dts is the equivalent regulator).
Fixes: 976e920183e4 ("arm64: dts: meson-sm1: add Banana PI BPI-M5 board dts")
Suggested-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Christian Hewitt <christianshewitt@xxxxxxxxx>
Reviewed-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230127142221.3718184-2-christianshewitt@xxxxxxxxx
Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
index 6d0db667581fa..38ebe98ba9c6b 100644
--- a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
@@ -123,7 +123,7 @@ vddio_c: regulator-vddio_c {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
- enable-gpio = <&gpio_ao GPIOE_2 GPIO_ACTIVE_HIGH>;
+ enable-gpio = <&gpio_ao GPIOE_2 GPIO_OPEN_DRAIN>;
enable-active-high;
regulator-always-on;
