linux-kernel - Re: [v2] arm64: dts: sc7180: add dsi controller and phy entries for idp dts

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Message-ID: <20200506192547.GY4525@google.com>
Date:   Wed, 6 May 2020 12:25:47 -0700
From:   Matthias Kaehlcke <mka@...omium.org>
To:     Harigovindan P <harigovi@...eaurora.org>
Cc:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        seanpaul@...omium.org, hoegsberg@...omium.org,
        kalyan_t@...eaurora.org, nganji@...eaurora.org
Subject: Re: [v2] arm64: dts: sc7180: add dsi controller and phy entries for
 idp dts

On Fri, Feb 14, 2020 at 10:49:37AM -0800, Matthias Kaehlcke wrote:
> On Tue, Feb 11, 2020 at 05:07:35PM +0530, Harigovindan P wrote:
> 
> > subject: arm64: dts: sc7180: add dsi controller and phy entries for idp dts
> 
> nit: 'dts' at the end is redundant, the prefixes make it clear that this
> is about DT entries.
> 
> Also the message isn't really concise. The main entries for the DSI
> controller and the PHY are in sc7180.dtsi. I would suggest to drop
> any mentions of DSI controller and PHYs, and just say something like
> 'Add nodes for IDP display'. In the body you could mention that the
> display is the Visionox RM69299.
> 
> > Adding dsi controller and phy entries for idp dt.
> > 
> > Signed-off-by: Harigovindan P <harigovi@...eaurora.org>
> > ---
> > 
> > Changes in v1:
> > 	- Added dsi controller and dsi phy entries for idp dts
> 
> Changes in v1 is pointless, it's the first patch
> 
> > Changes in v2:
> > 	- Adding dependency patchwork series
> > 	- Removing suspend configuration
> > 	- Adding blank before curly brace
> > 
> > This patch depends on following patchwork series:
> > 
> > https://patchwork.kernel.org/patch/11364687/
> > https://patchwork.kernel.org/patch/11366303/
> > 
> >  arch/arm64/boot/dts/qcom/sc7180-idp.dts | 55 +++++++++++++++++++++++++
> >  1 file changed, 55 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> > index 388f50ad4fde..6ccf8c3603ab 100644
> > --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> > +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> > @@ -7,6 +7,7 @@
> >  
> >  /dts-v1/;
> >  
> > +#include <dt-bindings/gpio/gpio.h>
> >  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
> >  #include "sc7180.dtsi"
> >  #include "pm6150.dtsi"
> > @@ -232,6 +233,49 @@ vreg_bob: bob {
> >  	};
> >  };
> >  
> > +&dsi0 {
> > +	status = "okay";
> > +
> > +	vdda-supply = <&vreg_l3c_1p2>;
> > +
> > +	panel@0 {
> > +		compatible = "visionox,rm69299-1080p-display";
> > +		reg = <0>;
> > +
> > +		vdda-supply = <&vreg_l8c_1p8>;
> > +		vdd3p3-supply = <&vreg_l18a_2p8>;
> > +
> > +		pinctrl-names = "default";
> > +		pinctrl-0 = <&disp_pins>;
> > +
> > +		reset-gpios = <&pm6150l_gpio 3 GPIO_ACTIVE_HIGH>;
> > +
> > +		ports {
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> > +			port@0 {
> > +				reg = <0>;
> > +				panel0_in: endpoint {
> > +					remote-endpoint = <&dsi0_out>;
> > +				};
> > +			};
> > +		};
> > +	};
> > +
> > +	ports {
> > +		port@1 {
> > +			endpoint {
> > +				remote-endpoint = <&panel0_in>;
> > +				data-lanes = <0 1 2 3>;
> > +			};
> > +		};
> > +	};
> > +};
> > +
> > +&dsi_phy {
> > +	status = "okay";
> > +};
> > +
> >  &qspi {
> >  	status = "okay";
> >  	pinctrl-names = "default";
> > @@ -289,6 +333,17 @@ &usb_1_qmpphy {
> >  
> >  /* PINCTRL - additions to nodes defined in sc7180.dtsi */
> >  
> > +&pm6150l_gpio {
> > +	disp_pins: disp-pins {
> > +		pins = "gpio3";
> > +		function = "func1";
> > +		qcom,drive-strength = <2>;
> > +		power-source = <0>;
> > +		bias-disable;
> > +		output-low;
> > +	};
> > +};
> > +
> >  &qspi_clk {
> >  	pinconf {
> >  		pins = "gpio63";
> 
> To get the display actually to work you also need this:
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7180-idp.dts b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> index 88919da1510b03..fdbcb56dfa81f9 100644
> --- a/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> +++ b/arch/arm64/boot/dts/qcom/sc7180-idp.dts
> @@ -276,6 +276,14 @@
>         status = "okay";
>  };
> 
> +&mdp {
> +       status = "okay";
> +};
> +
> +&mdss {
> +       status = "okay";
> +};
> +
>  &qspi {
>         status = "okay";
>         pinctrl-names = "default";
> 
> Maybe just add this to this patch?

ping

the display driver landed in drm-misc, but this patch still needs a
respin.