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

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Message-ID: <dc659e19-c1ae-42d8-84c9-0d2aafa81fe2@kernel.org>
Date: Tue, 11 Mar 2025 08:24:17 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Vignesh Raman <vignesh.raman@...labora.com>,
 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

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?

> 
> 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.

Best regards,
Krzysztof