6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chen-Yu Tsai wenst@chromium.org
commit fbcc95fceb6d179dd150df2dc613dfd9b013052c upstream.
The reset line of the IT6505 bridge chip is active low, not active high. It was incorrectly inverted in the device tree as the implementation at the time incorrectly inverted the polarity in its driver, due to a prior device having an inline inverting level shifter.
Fix the polarity now while the external display pipeline is incomplete, thereby avoiding any impact to running systems.
A matching fix for the driver should be included if this change is backported.
Fixes: 8855d01fb81f ("arm64: dts: mediatek: Add MT8186 Krabby platform based Tentacruel / Tentacool") Cc: stable@vger.kernel.org Signed-off-by: Chen-Yu Tsai wenst@chromium.org Link: https://lore.kernel.org/r/20241029100226.660263-1-wenst@chromium.org Signed-off-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi @@ -423,7 +423,7 @@ #sound-dai-cells = <0>; ovdd-supply = <&mt6366_vsim2_reg>; pwr18-supply = <&pp1800_dpbrdg_dx>; - reset-gpios = <&pio 177 GPIO_ACTIVE_HIGH>; + reset-gpios = <&pio 177 GPIO_ACTIVE_LOW>;
ports { #address-cells = <1>;