linux-kernel - Re: [PATCH] phy: mediatek: Modify mipi clk upper bound to 2.5Gbps

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Message-ID: <94672a94c59bd6b65317044f070129446b5ec8cb.camel@mediatek.com>
Date: Fri, 15 Aug 2025 09:43:55 +0000
From: CK Hu (胡俊光) <ck.hu@...iatek.com>
To: "vkoul@...nel.org" <vkoul@...nel.org>,
	Chunfeng Yun (云春峰) <Chunfeng.Yun@...iatek.com>,
	"chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>, "AngeloGioacchino Del
 Regno" <angelogioacchino.delregno@...labora.com>,
	Payne Lin (林于平) <Payne.Lin@...iatek.com>,
	"p.zabel@...gutronix.de" <p.zabel@...gutronix.de>, "matthias.bgg@...il.com"
	<matthias.bgg@...il.com>, "kishon@...nel.org" <kishon@...nel.org>
CC: Jh Hsu (許希孜) <Jh.Hsu@...iatek.com>,
	Project_Global_Chrome_Upstream_Group
	<Project_Global_Chrome_Upstream_Group@...iatek.com>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sirius Wang (王皓昱) <Sirius.Wang@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>,
	Vince-WL Liu (劉文龍) <Vince-WL.Liu@...iatek.com>,
	"linux-mediatek@...ts.infradead.org" <linux-mediatek@...ts.infradead.org>,
	Bincai Liu (刘彬才) <Bincai.Liu@...iatek.com>,
	"linux-phy@...ts.infradead.org" <linux-phy@...ts.infradead.org>
Subject: Re: [PATCH] phy: mediatek: Modify mipi clk upper bound to 2.5Gbps

On Thu, 2025-08-14 at 20:54 +0800, payne.lin wrote:
> From: Bincai Liu <bincai.liu@...iatek.com>
> 
> Mipi dphy can support up to 4k30 without dsc.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Signed-off-by: Bincai Liu <bincai.liu@...iatek.com>
> Signed-off-by: Payne Lin <payne.lin@...iatek.com>
> ---
>  drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c
> index 553725e1269c..b8233c496070 100644
> --- a/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c
> +++ b/drivers/phy/mediatek/phy-mtk-mipi-dsi-mt8183.c
> @@ -100,7 +100,7 @@ static void mtk_mipi_tx_pll_disable(struct clk_hw *hw)
>  static long mtk_mipi_tx_pll_round_rate(struct clk_hw *hw, unsigned long rate,
>  				       unsigned long *prate)
>  {
> -	return clamp_val(rate, 125000000, 1600000000);
> +	return clamp_val(rate, 125000000, 2500000000);
>  }
>  
>  static const struct clk_ops mtk_mipi_tx_pll_ops = {