linux-kernel - Re: [PATCH v1] arm64: defconfig: mediatek: enable PHY drivers

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Message-ID: <daa0733c-14e3-44df-8374-33aba6662813@collabora.com>
Date: Tue, 11 Mar 2025 17:26:37 +0530
From: Vignesh Raman <vignesh.raman@...labora.com>
To: Krzysztof Kozlowski <krzk@...nel.org>, linux-mediatek@...ts.infradead.org
Cc: chunkuang.hu@...nel.org, p.zabel@...gutronix.de, nfraprado@...labora.com,
 angelogioacchino.delregno@...labora.com, daniels@...labora.com,
 airlied@...il.com, simona.vetter@...ll.ch, dri-devel@...ts.freedesktop.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] arm64: defconfig: mediatek: enable PHY drivers

Hi Krzysztof,

On 11/03/25 12:54, Krzysztof Kozlowski wrote:
> On 11/03/2025 07:16, Vignesh Raman wrote:
>> The mediatek display driver fails to probe on mt8173 and mt8183 in
>> v6.14-rc4, with the following errors:
> 
> Which boards?

These are the boards,
https://lava.pages.collabora.com/docs/boards/chromebooks/boards/hana/
https://lava.pages.collabora.com/docs/boards/chromebooks/boards/jacuzzi/

> 
>>
>> mt8173:
>> platform 1401b000.dsi: deferred probe pending: mtk-dsi: Failed to get hs clock
>> platform 14025000.hdmi: deferred probe pending: (reason unknown)
>> i2c 1-0008: deferred probe pending: (reason unknown)
>>
>> mt8183:
>> platform 14014000.dsi: deferred probe pending: mtk-dsi: Failed to get hs clock
>> i2c 4-0058: deferred probe pending: anx7625: fail to find dsi host.
>>
>> Enabling CONFIG_PHY_MTK_MIPI_DSI=y in drm-ci resolves this error,
>> but mt8173 still fails with,
>>
>> [drm:mtk_dsi_host_attach] *ERROR* failed to add dsi_host component: -517
>> panel-simple-dp-aux aux-1-0008: DP AUX done_probing() can't defer
>> panel-simple-dp-aux aux-1-0008: probe with driver panel-simple-dp-aux failed with error -22
>>
>> Enabling CONFIG_PHY_MTK_XSPHY=y and CONFIG_PHY_MTK_HDMI=y in drm-ci
>> resolves this issue for mt8173.
>>
>> So enable these PHY configs for mediatek platforms.
> 
> Just say which boards need it for which functionality/features. Three
> sentences are enough.

Sure, will update the commit message. Thanks.

Regards,
Vignesh

> 
> Best regards,
> Krzysztof