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Message-ID: <1557214887.3498.7.camel@mtksdaap41>
Subject: Re: [v3 3/3] drm/mediatek: add mt8183 dpi support
From:   CK Hu <ck.hu@mediatek.com>
To:     Jitao Shi <jitao.shi@mediatek.com>
CC:     Rob Herring <robh+dt@kernel.org>, Pawel Moll <pawel.moll@arm.com>,
        "Mark Rutland" <mark.rutland@arm.com>,
        Ian Campbell <ijc+devicetree@hellion.org.uk>,
        Kumar Gala <galak@codeaurora.org>, <linux-pwm@vger.kernel.org>,
        David Airlie <airlied@linux.ie>,
        "Matthias Brugger" <matthias.bgg@gmail.com>,
        Thierry Reding <treding@nvidia.com>,
        "Ajay Kumar" <ajaykumar.rs@samsung.com>,
        Inki Dae <inki.dae@samsung.com>,
        "Rahul Sharma" <rahul.sharma@samsung.com>,
        Sean Paul <seanpaul@chromium.org>,
        Vincent Palatin <vpalatin@chromium.org>,
        Andy Yan <andy.yan@rock-chips.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        "Russell King" <rmk+kernel@arm.linux.org.uk>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <dri-devel@lists.freedesktop.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <srv_heupstream@mediatek.com>,
        Sascha Hauer <kernel@pengutronix.de>,
        <yingjoe.chen@mediatek.com>, <eddie.huang@mediatek.com>,
        <cawa.cheng@mediatek.com>, <bibby.hsieh@mediatek.com>,
        <stonea168@163.com>
Date:   Tue, 7 May 2019 15:41:27 +0800
In-Reply-To: <20190416055242.75764-4-jitao.shi@mediatek.com>
References: <20190416055242.75764-1-jitao.shi@mediatek.com>
         <20190416055242.75764-4-jitao.shi@mediatek.com>
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Hi, Jitao:

On Tue, 2019-04-16 at 13:52 +0800, Jitao Shi wrote:

I need the commit message. Even though the code is easy to understand,
words for this patch is still necessary.

Regards,
CK

> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
>  drivers/gpu/drm/mediatek/mtk_dpi.c | 19 +++++++++++++++++++
>  1 file changed, 19 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
> index 66405159141a..fbb087218775 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dpi.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
> @@ -681,6 +681,16 @@ static unsigned int mt2701_calculate_factor(int clock)
>  		return 2;
>  }
>  
> +static unsigned int mt8183_calculate_factor(int clock)
> +{
> +	if (clock <= 27000)
> +		return 8;
> +	else if (clock <= 167000)
> +		return 4;
> +	else
> +		return 2;
> +}
> +
>  static const struct mtk_dpi_conf mt8173_conf = {
>  	.cal_factor = mt8173_calculate_factor,
>  	.reg_h_fre_con = 0xe0,
> @@ -692,6 +702,12 @@ static const struct mtk_dpi_conf mt2701_conf = {
>  	.edge_sel_en = true,
>  };
>  
> +static const struct mtk_dpi_conf mt8183_conf = {
> +	.cal_factor = mt8183_calculate_factor,
> +	.reg_h_fre_con = 0xe0,
> +	.dual_edge = true,
> +};
> +
>  static int mtk_dpi_probe(struct platform_device *pdev)
>  {
>  	struct device *dev = &pdev->dev;
> @@ -787,6 +803,9 @@ static const struct of_device_id mtk_dpi_of_ids[] = {
>  	{ .compatible = "mediatek,mt8173-dpi",
>  	  .data = &mt8173_conf,
>  	},
> +	{ .compatible = "mediatek,mt8183-dpi",
> +	  .data = &mt8183_conf,
> +	},
>  	{ },
>  };
>