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

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Message-ID: <abdl6kmighvpwojvafq443q7grn6w3abwpvw7zwbna4jvtsvjf@fa42rv46n2wh>
Date:   Wed, 6 Dec 2023 13:56:32 +0100
From:   Maxime Ripard <mripard@...nel.org>
To:     Keith Zhao <keith.zhao@...rfivetech.com>
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 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

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