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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 21/08/2024 06:28, Chen-Yu Tsai wrote: > 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 > 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: > Signed-off-by: Chen-Yu Tsai Applied, thanks > --- > Stephen has recently posted the "platform/chrome: Add DT USB/DP > muxing/topology support" patch series, which is now up to v3 [1]. > More work based on this series is needed for the DP bridge drivers. > > [1] https://lore.kernel.org/dri-devel/20240819223834.2049862-1-swboyd@chromium.org/ > --- > arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi | 3 ++- > 1 file changed, 2 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi > index 0c4a26117428..682c6ad2574d 100644 > --- a/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi > +++ b/arch/arm64/boot/dts/mediatek/mt8186-corsola.dtsi > @@ -353,7 +353,8 @@ &dpi { > 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 {