linux-kernel - Re: [v3 5/6] drm/vs: Add hdmi driver

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Date:   Wed, 6 Dec 2023 22:11:33 +0800
From:   Keith Zhao <keith.zhao@...rfivetech.com>
To:     Maxime Ripard <mripard@...nel.org>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "tzimmermann@...e.de" <tzimmermann@...e.de>,
        "airlied@...il.com" <airlied@...il.com>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        William Qiu <william.qiu@...rfivetech.com>,
        Xingyu Wu <xingyu.wu@...rfivetech.com>,
        "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>,
        "aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
        "palmer@...belt.com" <palmer@...belt.com>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        Shengyang Chen <shengyang.chen@...rfivetech.com>,
        Jack Zhu <jack.zhu@...rfivetech.com>,
        Changhuang Liang <changhuang.liang@...rfivetech.com>,
        "maarten.lankhorst@...ux.intel.com" 
        <maarten.lankhorst@...ux.intel.com>,
        "suijingfeng@...ngson.cn" <suijingfeng@...ngson.cn>
Subject: Re: [v3 5/6] drm/vs: Add hdmi driver



On 2023/12/6 20:56, Maxime Ripard wrote:
> On Wed, Dec 06, 2023 at 08:02:55PM +0800, Keith Zhao wrote:
>> >> +static const struct of_device_id starfive_hdmi_dt_ids[] = {
>> >> +	{ .compatible = "starfive,jh7110-inno-hdmi",},
>> > 
>> > So it's inno hdmi, just like Rockchip then?
>> > 
>> > This should be a common driver.
>>
>> Rockchip has a inno hdmi IP. and Starfive has a inno hdmi IP.
>> but the harewawre difference of them is big , it is not easy to use the common driver
>> maybe i need the inno hdmi version here to make a distinction
> 
> I just had a look at the rockchip header file: all the registers but the
> STARFIVE_* ones are identical.
> 
> There's no need to have two identical drivers then, please use the
> rockchip driver instead.
> 
> Maxime

ok, have a simple test , edid can get . i will continue