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Message-ID: <CAF6AEGt8zuKWz-e_yRS_hbn6HV6DAXDvK4zwjJ-naQtEoe7uuA@mail.gmail.com>
Date: Fri, 29 Nov 2019 08:48:34 -0800
From: Rob Clark <robdclark@...il.com>
To: Harigovindan P <harigovi@...eaurora.org>
Cc: dri-devel <dri-devel@...ts.freedesktop.org>,
linux-arm-msm <linux-arm-msm@...r.kernel.org>,
freedreno <freedreno@...ts.freedesktop.org>,
"open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS"
<devicetree@...r.kernel.org>,
Abhinav Kumar <abhinavk@...eaurora.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
nganji@...eaurora.org, Sean Paul <seanpaul@...omium.org>,
"Kristian H. Kristensen" <hoegsberg@...omium.org>,
Jeykumar Sankaran <jsanka@...eaurora.org>,
Chandan Uddaraju <chandanu@...eaurora.org>
Subject: Re: [Freedreno] [PATCH v1 1/2] dt-bindings: display: add sc7180 panel variant
On Thu, Nov 28, 2019 at 10:56 PM Harigovindan P <harigovi@...eaurora.org> wrote:
>
> Add a compatible string to support sc7180 panel version.
>
> Signed-off-by: Harigovindan P <harigovi@...eaurora.org>
> ---
> .../bindings/display/visionox,rm69299.txt | 68 ++++++++++++++++++++++
> 1 file changed, 68 insertions(+)
> create mode 100755 Documentation/devicetree/bindings/display/visionox,rm69299.txt
>
> diff --git a/Documentation/devicetree/bindings/display/visionox,rm69299.txt b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
> new file mode 100755
> index 0000000..4622191
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/visionox,rm69299.txt
> @@ -0,0 +1,68 @@
> +Visionox model RM69299 DSI display driver
> +
> +The Visionox RM69299 is a generic display driver, currently only configured
> +for use in the 1080p display on the Qualcomm SC7180 MTP board.
> +
> +Required properties:
> +- compatible: should be "visionox,rm69299-1080p-display"
> +- vdda-supply: phandle of the regulator that provides the supply voltage
> + Power IC supply
> +- vdd3p3-supply: phandle of the regulator that provides the supply voltage
> + Power IC supply
> +- reset-gpios: phandle of gpio for reset line
> + This should be 8mA, gpio can be configured using mux, pinctrl, pinctrl-names
> + (active low)
> +- mode-gpios: phandle of the gpio for choosing the mode of the display
> + for single DSI
> +- ports: This device has one video port driven by one DSI. Their connections
> + are modeled using the OF graph bindings specified in
> + Documentation/devicetree/bindings/graph.txt.
> + - port@0: DSI input port driven by master DSI
> +
> +Example:
> +
> + dsi@...4000 {
> + panel@0 {
> + compatible = "visionox,rm69299-1080p-display";
> + reg = <0>;
> +
> + vdda-supply = <&src_pp1800_l8c>;
> + vdd3p3-supply = <&src_pp2800_l18a>;
> +
> + pinctrl-names = "default", "suspend";
> + pinctrl-0 = <&disp_pins_default>;
> + pinctrl-1 = <&disp_pins_default>;
> +
> + reset-gpios = <&pm6150l_gpios 3 0>;
> +
> + display-timings {
> + timing0: timing-0 {
> + /* originally
> + * 268316160 Mhz,
> + * but value below fits
> + * better w/ downstream
> + */
> + clock-frequency = <158695680>;
> + hactive = <1080>;
> + vactive = <2248>;
> + hfront-porch = <26>;
> + hback-porch = <36>;
> + hsync-len = <2>;
> + vfront-porch = <56>;
> + vback-porch = <4>;
> + vsync-len = <4>;
> + };
why do we specify timings in dt? Would the panel use different
timings on a different board?
BR,
-R
> + };
> +
> + ports {
> + #address-cells = <1>;
> + #size-cells = <0>;
> + port@0 {
> + reg = <0>;
> + panel0_in: endpoint {
> + remote-endpoint = <&dsi0_out>;
> + };
> + };
> + };
> + };
> + };
> --
> 2.7.4
>
> _______________________________________________
> Freedreno mailing list
> Freedreno@...ts.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/freedreno
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