On Fri, 2022-11-11 at 13:22 +0100, Matthias Brugger wrote:
>
> On 10/11/2022 07:37, Bo-Chen Chen wrote:
> > In MT8195, we use edptx as the internal display interface and use
> > dptx as the external display interface. Therefore, we need to add
> > these nodes to support the internal display and the external
> > display.
> >
> > - Add dp calibration data in the efuse node.
> > - Add edptx and dptx nodes for MT8195.
> >
> > Signed-off-by: Bo-Chen Chen <rex-bc.chen@xxxxxxxxxxxx>
> > Reviewed-by: AngeloGioacchino Del Regno <
> > angelogioacchino.delregno@xxxxxxxxxxxxx>
> > ---
> > arch/arm64/boot/dts/mediatek/mt8195.dtsi | 25
> > ++++++++++++++++++++++++
> > 1 file changed, 25 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > index c380738d10cb..7acbef5a4517 100644
> > --- a/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > +++ b/arch/arm64/boot/dts/mediatek/mt8195.dtsi
> > @@ -1244,6 +1244,9 @@
> > reg = <0x189 0x2>;
> > bits = <7 5>;
> > };
> > + dp_calibration: dp-data@1ac {
> > + reg = <0x1ac 0x10>;
> > + };
> > };
> >
> > u3phy2: t-phy@11c40000 {
> > @@ -2205,5 +2208,27 @@
> > clock-names = "engine", "pixel", "pll";
> > status = "disabled";
> > };
> > +
> > + edp_tx: edp-tx@1c500000 {
> > + compatible = "mediatek,mt8195-edp-tx";
> > + reg = <0 0x1c500000 0 0x8000>;
> > + nvmem-cells = <&dp_calibration>;
> > + nvmem-cell-names = "dp_calibration_data";
> > + power-domains = <&spm
> > MT8195_POWER_DOMAIN_EPD_TX>;
> > + interrupts = <GIC_SPI 676 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + max-linkrate-mhz = <8100>;
> > + status = "disabled";
> > + };
> > +
> > + dp_tx: dp-tx@1c600000 {
> > + compatible = "mediatek,mt8195-dp-tx";
> > + reg = <0 0x1c600000 0 0x8000>;
> > + nvmem-cells = <&dp_calibration>;
> > + nvmem-cell-names = "dp_calibration_data";
> > + power-domains = <&spm
> > MT8195_POWER_DOMAIN_DP_TX>;
> > + interrupts = <GIC_SPI 458 IRQ_TYPE_LEVEL_HIGH
> > 0>;
> > + max-linkrate-mhz = <8100>;
> > + status = "disabled";
> > + };
>
> For some not really obvious reasons we get the following errors with
> make CHECK_DTBS=1 mediatek/mt8195-cherry-tomato-r2.dtb
>
> arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dtb:0:0:
> /soc/edp-tx@1c500000: failed to match any schema with compatible:
> ['mediatek,mt8195-edp-tx']
> arch/arm64/boot/dts/mediatek/mt8195-cherry-tomato-r2.dtb:0:0:
> /soc/dp-tx@1c600000: failed to match any schema with compatible:
> ['mediatek,mt8195-dp-tx']
>
> Can you please see how to fix this. Tested with next-20221111.
>
> Regards,
> Matthias
>
Hello Matthias,
I can not reproduce this issue in my local environment, but I am sure
the binding is in kernel master branch (v6.1-rc5):
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/display/mediatek/mediatek,dp.yaml?h=v6.1-rc5
It's strange that the message you provided said it can not find any
schema with ['mediatek,mt8195-edp-tx'] and ['mediatek,mt8195-dp-tx'].
BRs,
Bo-Chen
> > };
> > };
