linux-kernel - Re: [PATCH 3/3] phy: qcom: edp: Add eDP phy mode switch support

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Message-ID: <af15838f-6a31-4017-ae5d-7b5e30f24aa4@oss.qualcomm.com>
Date: Fri, 6 Feb 2026 12:02:24 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Yongxing Mou <yongxing.mou@....qualcomm.com>,
        Vinod Koul <vkoul@...nel.org>,
        Neil Armstrong <neil.armstrong@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/3] phy: qcom: edp: Add eDP phy mode switch support

On 2/5/26 10:20 AM, Yongxing Mou wrote:
> Add DP/eDP switch support by splitting the PHY swing/pre-emphasis tables
> into separate DP and eDP configurations. This allows the driver to select
> the correct table based on the is_edp flag.
> 
> Add a dedicated table for the SC7280/glymur platforms, as they are not
> compatible with the others.
> 
> Signed-off-by: Yongxing Mou <yongxing.mou@....qualcomm.com>
> ---

[...]

> +static const u8 edp_swing_hbr2_hbr3_v3[4][4] = {
> +	{ 0x0b, 0x11, 0x16, 0x1b },
> +	{ 0x0b, 0x19, 0x1f, 0xff },
> +	{ 0x18, 0x1f, 0xff, 0xff },
> +	{ 0x1f, 0xff, 0xff, 0xff }
> +};
> +
> +static const u8 edp_pre_emp_hbr2_hbr3_v3[4][4] = {
> +	{ 0x0c, 0x15, 0x19, 0x1e },
> +	{ 0x09, 0x14, 0x19, 0xff },
> +	{ 0x0f, 0x14, 0xff, 0xff },
> +	{ 0x0d, 0xff, 0xff, 0xff }
> +};

This is not quite in line with docs for kodiak. Now, if you have
better/newer sequences than the HPG, I'm not objecting, but please
cross-check

the rest of this patch I think looks fine

Konrad