Hi Stephen,
Will implement all the suggested changes.
Thank you,
Sankeerth
-----Original Message-----
From: Stephen Boyd <swboyd@xxxxxxxxxxxx>
Sent: Thursday, February 10, 2022 6:45 AM
To: Sankeerth Billakanti (QUIC) <quic_sbillaka@xxxxxxxxxxx>; agross@xxxxxxxxxx; airlied@xxxxxxxx; bjorn.andersson@xxxxxxxxxx; daniel@xxxxxxxx; devicetree@xxxxxxxxxxxxxxx; dianders@xxxxxxxxxxxx; dri-devel@xxxxxxxxxxxxxxxxxxxxx; freedreno@xxxxxxxxxxxxxxxxxxxxx; krzysztof.kozlowski@xxxxxxxxxxxxx; linux-arm-msm@xxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; robdclark@xxxxxxxxx; robh+dt@xxxxxxxxxx; sam@xxxxxxxxxxxx; seanpaul@xxxxxxxxxxxx; thierry.reding@xxxxxxxxx
Cc: quic_kalyant <quic_kalyant@xxxxxxxxxxx>; Abhinav Kumar (QUIC) <quic_abhinavk@xxxxxxxxxxx>; Kuogee Hsieh (QUIC) <quic_khsieh@xxxxxxxxxxx>; quic_mkrishn <quic_mkrishn@xxxxxxxxxxx>; quic_vproddut <quic_vproddut@xxxxxxxxxxx>
Subject: Re: [PATCH v3 2/4] arm64: dts: qcom: sc7280: Add support for eDP panel on CRD
Quoting Sankeerth Billakanti (2022-02-09 00:55:30)
> Enable the eDP display panel support without HPD on sc7280 platform.
>
> Signed-off-by: Sankeerth Billakanti <quic_sbillaka@xxxxxxxxxxx>
> ---
>
> Changes in v3:
> - Sort the nodes alphabetically
> - Use - instead of _ as node names
> - Place the backlight and panel nodes under root
> - Change the name of edp_out to mdss_edp_out
> - Change the names of regulator nodes
> - Delete unused properties in the board file
>
>
> Changes in v2:
> - Sort node references alphabetically
> - Improve readability
> - Move the pwm pinctrl to pwm node
> - Move the regulators to root
> - Define backlight power
> - Remove dummy regulator node
> - Cleanup pinctrl definitions
>
> arch/arm64/boot/dts/qcom/sc7280-crd.dts | 122 ++++++++++++++++++++++++++++++++
> arch/arm64/boot/dts/qcom/sc7280.dtsi | 2 +-
> 2 files changed, 123 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
> b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
> index e2efbdd..2a490a0 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280-crd.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7280-crd.dts
> @@ -21,6 +21,59 @@
> chosen {
> stdout-path = "serial0:115200n8";
> };
> +
> + backlight_3v3_regulator: backlight-3v3-regulator {
> + compatible = "regulator-fixed";
> + regulator-name = "backlight_3v3_regulator";
> +
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> +
> + gpio = <&pm8350c_gpios 7 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&edp_bl_power>;
> + };
> +
> + edp_3v3_regulator: edp-3v3-regulator {
> + compatible = "regulator-fixed";
> + regulator-name = "edp_3v3_regulator";
> +
> + regulator-min-microvolt = <3300000>;
> + regulator-max-microvolt = <3300000>;
> +
> + gpio = <&tlmm 80 GPIO_ACTIVE_HIGH>;
> + enable-active-high;
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&edp_panel_power>;
> + };
> +
> + edp_backlight: edp-backlight {
> + compatible = "pwm-backlight";
> +
> + power-supply = <&backlight_3v3_regulator>;
> + pwms = <&pm8350c_pwm 3 65535>;
> + };
> +
> + edp_panel: edp-panel {
> + compatible = "sharp,lq140m1jw46";
> +
> + power-supply = <&edp_3v3_regulator>;
> + backlight = <&edp_backlight>;
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port@0 {
> + reg = <0>;
> + edp_panel_in: endpoint {
> + remote-endpoint = <&edp_out>;
Where is edp_out now?
> + };
> + };
> + };
> + };
> };
>
> &apps_rsc {
> @@ -76,6 +129,44 @@ ap_ts_pen_1v8: &i2c13 {
> };
> };
>
> +&mdss {
> + status = "okay";
> +};
> +
> +&mdss_dp {
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&dp_hot_plug_det>;
> + data-lanes = <0 1>;
> + vdda-1p2-supply = <&vreg_l6b_1p2>;
> + vdda-0p9-supply = <&vreg_l1b_0p8>; };
> +
> +&mdss_edp {
> + status = "okay";
> +
> + vdda-1p2-supply = <&vreg_l6b_1p2>;
> + vdda-0p9-supply = <&vreg_l10c_0p8>;
> + /delete-property/ pinctrl-names;
> + /delete-property/ pinctrl-0;
> +};
> +
> +&mdss_edp_out {
> + remote-endpoint = <&edp_panel_in>; };
> +
> +&mdss_edp_phy {
> + status = "okay";
> +
> + vdda-1p2-supply = <&vreg_l6b_1p2>;
> + vdda-0p9-supply = <&vreg_l10c_0p8>; };
> +
> +&mdss_mdp {
> + status = "okay";
> +};
> +
> &nvme_3v3_regulator {
> gpio = <&tlmm 51 GPIO_ACTIVE_HIGH>; }; @@ -84,7 +175,38 @@
> ap_ts_pen_1v8: &i2c13 {
> pins = "gpio51";
> };
>
> +&pm8350c_gpios {
> + edp_bl_power: edp-bl-power {
> + pins = "gpio7";
> + function = "normal";
> + qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
> + bias-disable;
> + output-low;
Is the 'output-low' necessary?
> + };
> +
> + edp_bl_pwm: edp-bl-pwm {
> + pins = "gpio8";
> + function = "func1";
> + qcom,drive-strength = <PMIC_GPIO_STRENGTH_LOW>;
> + bias-disable;
> + output-low;
Same question.
> + };
> +};
> +
> +&pm8350c_pwm {
> + status = "okay";
> +
> + pinctrl-names = "default";
> + pinctrl-0 = <&edp_bl_pwm>;
> +};
> +
> &tlmm {
> + edp_panel_power: edp-panel-power {
> + pins = "gpio80";
> + function = "gpio";
> + bias-pull-down;
> + };
> +
> tp_int_odl: tp-int-odl {
> pins = "gpio7";
> function = "gpio";
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 3572399..eca403a 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -3066,7 +3066,7 @@
>
> port@1 {
> reg = <1>;
> - edp_out: endpoint { };
> + mdss_edp_out: endpoint
> + { };
> };
It feels like this should be a different patch for this phandle rename.
