linux-kernel - Re: [PATCH 1/2] dt-bindings: display: panel: Add Novatek NT36523 bindings

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Date:   Mon, 13 Feb 2023 12:23:04 +0100
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Jianhua Lu <lujianhua000@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Sam Ravnborg <sam@...nborg.org>,
        David Airlie <airlied@...il.com>,
        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
Subject: Re: [PATCH 1/2] dt-bindings: display: panel: Add Novatek NT36523
 bindings

On 13/02/2023 12:20, Jianhua Lu wrote:
> On Mon, Feb 13, 2023 at 12:08:27PM +0100, Krzysztof Kozlowski wrote:
>> On 13/02/2023 12:04, Jianhua Lu wrote:
>>> On Mon, Feb 13, 2023 at 11:45:23AM +0100, Krzysztof Kozlowski wrote:
>>>> On 10/02/2023 17:19, Jianhua Lu wrote:
>>>>> Novatek NT36523 is a display driver IC that can drive DSI panel. It
>>>>> is also present in the csot and boe video mode panels. It is found
>>>>> in Xiaomi Mi Pad 5 series.
>>>>>
>>>>> Signed-off-by: Jianhua Lu <lujianhua000@...il.com>
>>>>> ---
>>>>>  .../display/panel/novatek,nt36523.yaml        | 101 ++++++++++++++++++
>>>>>  1 file changed, 101 insertions(+)
>>>>>  create mode 100644 Documentation/devicetree/bindings/display/panel/novatek,nt36523.yaml
>>>>>
>>>>> diff --git a/Documentation/devicetree/bindings/display/panel/novatek,nt36523.yaml b/Documentation/devicetree/bindings/display/panel/novatek,nt36523.yaml
>>>>> new file mode 100644
>>>>> index 000000000000..a7098d0ce7e1
>>>>> --- /dev/null
>>>>> +++ b/Documentation/devicetree/bindings/display/panel/novatek,nt36523.yaml
>>>>> @@ -0,0 +1,101 @@
>>>>> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
>>>>> +%YAML 1.2
>>>>> +---
>>>>> +$id: http://devicetree.org/schemas/display/panel/novatek,nt36523.yaml#
>>>>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>>>>> +
>>>>> +title: Novatek NT36523 based DSI display Panels
>>>>> +
>>>>> +maintainers:
>>>>> +  - Jianhua Lu <lujianhua000@...il.com>
>>>>> +
>>>>> +description: |
>>>>> +  The nt36523 IC from Novatek is a generic DSI Panel IC used to drive dsi
>>>>> +  panels.
>>>>> +  Right now, only support cost and boe LCD display panels with the
>>>>
>>>> boe? both?
>>> Boe Technology Group Co., Ltd
>>
>> Then what is "cost"? If both are names, then they start with capital
>> letters or how the company officially spells itself.
> both are company name, I will search offical name for it.

"cost" is company name? Then why do you call binding with different one?

>>
>>>>
>>>>> +  resolution of 1600x2560. It is a video mode DSI panel.
>>>>
>>>> The binding or hardware supports only 1600x2560? The how it can be
>>>> "right now"? It's defined, isn't it?
>>> Yes
>>
>> What yes? How it can be "right now"? It implies it will change, so how
>> hardware can change?
> sorry, my wrong. This binding only support 1600x2560.

How binding can support only 1600x2560? How does it exactly work for
binding?


Best regards,
Krzysztof