Re: [PATCH v1 9/9] arm64: dts: qcom: sm8350-hdk: Enable lt9611uxc dsi-hdmi bridge

[Robert Foss <robert.foss@xxxxxxxxxx>]

On Sat, 29 Oct 2022 at 00:06, Krzysztof Kozlowski
<krzysztof.kozlowski@xxxxxxxxxx> wrote:
>
> On 28/10/2022 08:08, Robert Foss wrote:
> > The sm8350-hdk ships with the LT9611 UXC DSI/HDMI bridge chip.
> >
> > In order to toggle the board to enable the HDMI output,
> > switch #7 & #8 on the rightmost multi-switch package have
> > to be toggled to On.
> >
> > Signed-off-by: Robert Foss <robert.foss@xxxxxxxxxx>
> > ---
> >  arch/arm64/boot/dts/qcom/sm8350-hdk.dts | 106 ++++++++++++++++++++++++
> >  1 file changed, 106 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> > index 6e07feb4b3b2..6666b38b58f8 100644
> > --- a/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> > +++ b/arch/arm64/boot/dts/qcom/sm8350-hdk.dts
> > @@ -20,6 +20,17 @@ chosen {
> >               stdout-path = "serial0:115200n8";
> >       };
> >
> > +     hdmi-out {
>
> Generic node names, so hdmi-connector or just connector.

Ack.

>
> > +             compatible = "hdmi-connector";
> > +             type = "a";
> > +
> > +             port {
> > +                     hdmi_con: endpoint {
> > +                             remote-endpoint = <&lt9611_out>;
> > +                     };
> > +             };
> > +     };
> > +
> >       vph_pwr: vph-pwr-regulator {
> >               compatible = "regulator-fixed";
> >               regulator-name = "vph_pwr";
> > @@ -29,6 +40,32 @@ vph_pwr: vph-pwr-regulator {
> >               regulator-always-on;
> >               regulator-boot-on;
> >       };
> > +
> > +     lt9611_1v2: lt9611-1v2 {
>
> Node names should be generic.
> https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation

Ack.

>
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "LT9611_1V2";
> > +
> > +             vin-supply = <&vph_pwr>;
> > +             regulator-min-microvolt = <1200000>;
> > +             regulator-max-microvolt = <1200000>;
> > +             gpio = <&tlmm 49 GPIO_ACTIVE_HIGH>;
> > +             enable-active-high;
> > +             regulator-boot-on;
> > +             regulator-always-on;
> > +     };
> > +
> > +     lt9611_3v3: lt9611-3v3 {
>
> Ditto

Ack.

>
>
> > +             compatible = "regulator-fixed";
> > +             regulator-name = "LT9611_3V3";
> > +
> > +             vin-supply = <&vreg_bob>;
> > +             gpio = <&tlmm 47 GPIO_ACTIVE_HIGH>;
> > +             regulator-min-microvolt = <3300000>;
> > +             regulator-max-microvolt = <3300000>;
> > +             enable-active-high;
> > +             regulator-boot-on;
> > +             regulator-always-on;
> > +     };
> >  };
> >
> >  &adsp {
> > @@ -220,6 +257,15 @@ &dispcc {
> >  &dsi0 {
> >       status = "okay";
> >       vdda-supply = <&vreg_l6b_1p2>;
> > +
> > +     ports {
> > +             port@1 {
> > +                     endpoint {
> > +                             remote-endpoint = <&lt9611_a>;
> > +                             data-lanes = <0 1 2 3>;
> > +                     };
> > +             };
> > +     };
> >  };
> >
> >  &dsi0_phy  {
> > @@ -231,6 +277,48 @@ &gpi_dma1 {
> >       status = "okay";
> >  };
> >
> > +&i2c15 {
> > +     status = "okay";
>
> status is the last property

Ack.

>
> > +     clock-frequency = <400000>;
> > +
> > +     lt9611_codec: hdmi-bridge@2b {
> > +             compatible = "lontium,lt9611uxc";
> > +             reg = <0x2b>;
> > +             status = "okay";
>
> Why status?

It should be removed. Fixing in v2.

>
> > +
> > +             interrupts-extended = <&tlmm 50 IRQ_TYPE_EDGE_FALLING>;
> > +             reset-gpios = <&tlmm 48 GPIO_ACTIVE_HIGH>;
> > +
> > +             vdd-supply = <&lt9611_1v2>;
> > +             vcc-supply = <&lt9611_3v3>;
> > +
> > +             pinctrl-names = "default";
> > +             pinctrl-0 = <&lt9611_irq_pin &lt9611_rst_pin>;
> > +
> > +             ports {
> > +                     #address-cells = <1>;
> > +                     #size-cells = <0>;
> > +
> > +                     port@0 {
> > +                             reg = <0>;
> > +
> > +                             lt9611_a: endpoint {
> > +                                     remote-endpoint = <&dsi0_out>;
> > +                             };
> > +                     };
> > +
> > +                     port@2 {
> > +                             reg = <2>;
> > +
> > +                             lt9611_out: endpoint {
> > +                                     remote-endpoint = <&hdmi_con>;
> > +                             };
> > +                     };
> > +
>
> No need for blank line

Ack

>
> > +             };
> > +     };
> > +};
> > +
> >  &mdss {
> >       status = "okay";
> >  };
> > @@ -248,6 +336,10 @@ &qupv3_id_0 {
> >       status = "okay";
> >  };
> >
> > +&qupv3_id_2 {
> > +     status = "okay";
> > +};
> > +
> >  &slpi {
> >       status = "okay";
> >       firmware-name = "qcom/sm8350/slpi.mbn";
> > @@ -544,4 +636,18 @@ usb_hub_enabled_state: usb-hub-enabled-state {
> >               drive-strength = <2>;
> >               output-low;
> >       };
> > +
> > +     lt9611_rst_pin: lt9611-rst-state {
> > +             pins = "gpio48";
> > +             function = "normal";
> > +
> > +             output-high;
> > +             input-disable;
> > +     };
> > +
> > +     lt9611_irq_pin: lt9611-irq {
>
> Missing suffix 'state'.

Ack.

>
> Does not look like you tested the DTS against bindings. Please run `make
> dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
> for instructions).

v1 was missing the bindings, v2 will include bindings for there parts.

>
> Rebase your changes on last linux-next.

Ack.

>
> Best regards,
> Krzysztof
>