arm64: dts: mediatek: mt8186-corsola: Disable DPI display interface

commit 3079fb09ddac159bd8bb87f6f15b924e265f8d4d upstream.

The DPI display interface feeds the external display pipeline. However
the pipeline representation is currently incomplete. Efforts are still
under way to come up with a way to represent the "creative" repurposing
of the DP bridge chip's internal output mux, which is meant to support
USB type-C orientation changes, to output to one of two type-C ports.

Until that is finalized, the external display can't be fully described,
and thus won't work. Even worse, the half complete graph potentially
confuses the OS, breaking the internal display as well.

Disable the external display interface across the whole Corsola family
until the DP / USB Type-C muxing graph binding is ready.

Reported-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Closes: https://lore.kernel.org/linux-mediatek/38a703a9-6efb-456a-a248-1dd3687e526d@gmail.com/
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>
Tested-by: Alper Nebi Yasak <alpernebiyasak@gmail.com>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Link: https://lore.kernel.org/r/20240821042836.2631815-1-wenst@chromium.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
index afdab5724eaaac2da889ba93d018f349b78d5d5f..eccbd7b597bb11b94d3108837020cd10c1fcaca6 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi
@@ -353,7 +353,8 @@
        pinctrl-names = "default", "sleep";
        pinctrl-0 = <&dpi_pins_default>;
        pinctrl-1 = <&dpi_pins_sleep>;
-       status = "okay";
+       /* TODO Re-enable after DP to Type-C port muxing can be described */
+       status = "disabled";
 };
 
 &dpi_out {