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Message-ID: <YsnpXU2w1wsXiGrs@ravnborg.org>
Date: Sat, 9 Jul 2022 22:47:25 +0200
From: Sam Ravnborg <sam@...nborg.org>
To: MollySophia <mollysophia379@...il.com>
Cc: Thierry Reding <thierry.reding@...il.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 1/2] dt-bindings: display: panel: Add Novatek NT35596S
panel bindings
Hi Molly,
thanks for the quick response to the review comments.
On Sat, Jul 09, 2022 at 10:11:35PM +0800, MollySophia wrote:
> Add documentation for "novatek,nt35596s" panel.
>
> Signed-off-by: MollySophia <mollysophia379@...il.com>
The s-o-b needs your real name - guess the above is a concatenation of
first name and surname.
The binding included in this patch fails the check:
$ make DT_CHECKER_FLAGS=-m dt_binding_check
You may need to run:
$ pip3 install dtschema --upgrade
Or you may have to install some dependencies first.
The problem is that the patch is missing a "reset-gpios: true"
On top of this I looked at the binding - and the description
this is copied from is almost identical.
So another approach would be to extend the existing binding like
in the following.
And this also gives a good hint that maybe this can be embedded in
the existing driver - and there is no need for a new driver.
Could you try to give this a spin and get back on this.
Sorry for not seeing this in the first place.
Sam
diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
index 41ee3157a1cd..913bb81ae93d 100644
--- a/Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
+++ b/Documentation/devicetree/bindings/display/panel/novatek,nt36672a.yaml
@@ -20,14 +20,20 @@ allOf:
properties:
compatible:
- items:
- - enum:
- - tianma,fhd-video
- - const: novatek,nt36672a
+ oneOf:
+ - items:
+ - enum:
+ - tianma,fhd-video
+ - const: novatek,nt36672a
+
+ - items:
+ - enum:
+ - jdi,fhd-nt35596s
+ - const: novatek,nt35596s
+
description: This indicates the panel manufacturer of the panel that is
- in turn using the NT36672A panel driver. This compatible string
- determines how the NT36672A panel driver is configured for the indicated
- panel. The novatek,nt36672a compatible shall always be provided as a fallback.
+ in turn using the NT36672A or the NT35596S panel driver. This compatible string
+ determines how the panel driver is configured for the indicated panel.
reset-gpios:
maxItems: 1
@@ -85,4 +91,27 @@ examples:
};
};
+ dsi1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ panel@0 {
+ compatible = "jdi,fhd-nt35596s", "novatek,nt35596s";
+ reg = <0>;
+ vddi0-supply = <&vreg_l14a_1p88>;
+ vddpos-supply = <&lab>;
+ vddneg-supply = <&ibb>;
+
+ backlight = <&pmi8998_wled>;
+ reset-gpios = <&tlmm 6 GPIO_ACTIVE_HIGH>;
+
+ port {
+ jdi_nt35596s_in_1: endpoint {
+ remote-endpoint = <&dsi1_out>;
+ };
+ };
+ };
+ };
+
+
...
> ---
> .../display/panel/novatek,nt35596s.yaml | 83 +++++++++++++++++++
> 1 file changed, 83 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/display/panel/novatek,nt35596s.yaml
>
> diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt35596s.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt35596s.yaml
> new file mode 100644
> index 000000000000..f724f101a6fd
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/display/panel/novatek,nt35596s.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/display/panel/novatek,nt35596s.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Novatek NT35596S based DSI display Panels
> +
> +maintainers:
> + - Molly Sophia <mollysophia379@...il.com>
> +
> +description: |
> + The nt35596s IC from Novatek is a generic DSI Panel IC used to drive dsi
> + panels.
> + Right now, support is added only for a JDI FHD+ LCD display panel with a
> + resolution of 1080x2160. It is a video mode DSI panel.
> +
> +allOf:
> + - $ref: panel-common.yaml#
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - jdi,fhd-nt35596s
> + - const: novatek,nt35596s
> + description: This indicates the panel manufacturer of the panel that is
> + in turn using the NT35596S panel driver. This compatible string
> + determines how the NT35596S panel driver is configured for the indicated
> + panel. The novatek,nt35596s compatible shall always be provided as a fallback.
> +
> + vddi0-supply:
> + description: regulator that provides the supply voltage
> + Power IC supply
> +
> + vddpos-supply:
> + description: positive boost supply regulator
> +
> + vddneg-supply:
> + description: negative boost supply regulator
> +
> + reg: true
> + port: true
> + backlight: true
> +
> +required:
> + - compatible
> + - reg
> + - vddi0-supply
> + - vddpos-supply
> + - vddneg-supply
> + - reset-gpios
> + - port
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/gpio/gpio.h>
> +
> + dsi {
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + panel@0 {
> + compatible = "jdi,fhd-nt35596s", "novatek,nt35596s";
> + reg = <0>;
> + vddi0-supply = <&vreg_l14a_1p88>;
> + vddpos-supply = <&lab>;
> + vddneg-supply = <&ibb>;
> +
> + backlight = <&pmi8998_wled>;
> + reset-gpios = <&tlmm 6 GPIO_ACTIVE_HIGH>;
> +
> + port {
> + jdi_nt35596s_in_0: endpoint {
> + remote-endpoint = <&dsi0_out>;
> + };
> + };
> + };
> + };
> +
> +...
> --
> 2.37.0
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