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Date: Fri, 11 Mar 2022 13:05:13 +0000
From: Paul Cercueil <paul@...pouillou.net>
To: Rob Herring <robh@...nel.org>
Cc: Christophe Branchereau <cbranchereau@...il.com>,
David Airlie <airlied@...ux.ie>,
Daniel Vetter <daniel@...ll.ch>,
Thierry Reding <thierry.reding@...il.com>,
Sam Ravnborg <sam@...nborg.org>, linux-kernel@...r.kernel.org,
linux-mips@...r.kernel.org, dri-devel@...ts.freedesktop.org,
devicetree@...r.kernel.org
Subject: Re: [PATCH v2 4/4] dt-bindings: display/panel: Add Leadtek
ltk035c5444t
Hi Rob,
Le jeu., mars 10 2022 at 16:30:26 -0600, Rob Herring <robh@...nel.org>
a écrit :
> On Tue, Mar 08, 2022 at 02:06:43PM +0100, Christophe Branchereau
> wrote:
>> Add binding for the leadtek ltk035c5444t, which is a 640x480
>> mipi-dbi over spi / 24-bit RGB panel based on the newvision
>> NV03052C chipset.
>>
>> It is found in the Anbernic RG350M mips handheld.
>>
>> Signed-off-by: Christophe Branchereau <cbranchereau@...il.com>
>> ---
>> .../panel/leadtek,ltk035c5444t-spi.yaml | 59
>> +++++++++++++++++++
>> 1 file changed, 59 insertions(+)
>> create mode 100644
>> Documentation/devicetree/bindings/display/panel/leadtek,ltk035c5444t-spi.yaml
>
> We have 18 SPI based panels already:
>
> $ git grep -i 'spi.* {'
> Documentation/devicetree/bindings/display/panel/
> Documentation/devicetree/bindings/display/panel/abt,y030xx067a.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/ilitek,ili9163.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/ilitek,ili9322.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/ilitek,ili9341.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/innolux,ej030na.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/kingdisplay,kd035g6-54nt.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/lg,lg4573.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/lgphilips,lb035q02.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/nec,nl8048hl11.yaml:
> spi0 {
> Documentation/devicetree/bindings/display/panel/samsung,ld9040.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/samsung,lms380kf01.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/samsung,lms397kf04.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/samsung,s6d27a1.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/samsung,s6e63m0.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/sitronix,st7789v.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/sony,acx565akm.yaml:
> spi {
> Documentation/devicetree/bindings/display/panel/tpo,td.yaml: spi {
> Documentation/devicetree/bindings/display/panel/tpo,tpg110.yaml:
> spi {
>
> Most except for the Samsung ones look like they'd fit in our
> definition
> of 'simple panels' which primarily means 1 supply.
>
> So I think it is time for a panel-simple-spi.yaml binding to combine
> all
> these. But I'm not going to make the person adding the 19th case to do
> that, and this otherwise looks fine:
>
> Reviewed-by: Rob Herring <robh@...nel.org>
I actually thought you sent a patch for this already (I remember you
talking about it last a binding for a new SPI panel has been added).
I will work on it next week - provided Cristophe's patch has been
merged before.
Cheers,
-Paul
>
> With one nit fixed below:
>
>>
>> diff --git
>> a/Documentation/devicetree/bindings/display/panel/leadtek,ltk035c5444t-spi.yaml
>> b/Documentation/devicetree/bindings/display/panel/leadtek,ltk035c5444t-spi.yaml
>> new file mode 100644
>> index 000000000000..9b6f1810adab
>> --- /dev/null
>> +++
>> b/Documentation/devicetree/bindings/display/panel/leadtek,ltk035c5444t-spi.yaml
>> @@ -0,0 +1,59 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id:
>> http://devicetree.org/schemas/display/panel/leadtek,ltk035c5444t-spi.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Leadtek ltk035c5444t 3.5" (640x480 pixels) 24-bit IPS LCD
>> panel
>> +
>> +maintainers:
>> + - Paul Cercueil <paul@...pouillou.net>
>> + - Christophe Branchereau <cbranchereau@...il.com>
>> +
>> +allOf:
>> + - $ref: panel-common.yaml#
>> + - $ref: /schemas/spi/spi-peripheral-props.yaml#
>> +
>> +properties:
>> + compatible:
>> + const: leadtek,ltk035c5444t-spi
>
> '-spi' is redundant, so drop.
>
>> +
>> + backlight: true
>> + port: true
>> + power-supply: true
>> + reg: true
>> + reset-gpios: true
>> +
>> +required:
>> + - compatible
>> + - power-supply
>> + - reset-gpios
>> +
>> +unevaluatedProperties: false
>> +
>> +examples:
>> + - |
>> + #include <dt-bindings/gpio/gpio.h>
>> +
>> + spi {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> + panel@0 {
>> + compatible = "leadtek,ltk035c5444t-spi";
>
> And update the example...
>
>> + reg = <0>;
>> +
>> + spi-3wire;
>> + spi-max-frequency = <3125000>;
>> +
>> + reset-gpios = <&gpe 2 GPIO_ACTIVE_LOW>;
>> +
>> + backlight = <&backlight>;
>> + power-supply = <&vcc>;
>> +
>> + port {
>> + panel_input: endpoint {
>> + remote-endpoint = <&panel_output>;
>> + };
>> + };
>> + };
>> + };
>> --
>> 2.34.1
>>
>>
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