linux-kernel - Re: [PATCH] drm: display: Set fwnode for aux bus devices

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Message-ID: <f21fd6bd-b3d5-48f3-8693-48668ee5036a@collabora.com>
Date: Thu, 24 Oct 2024 13:35:47 +0200
From: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
To: Saravana Kannan <saravanak@...gle.com>,
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>,
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
 Matthias Brugger <matthias.bgg@...il.com>
Cc: Nícolas F. R. A. Prado <nfraprado@...labora.com>,
 Jon Hunter <jonathanh@...dia.com>, kernel-team@...roid.com,
 dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH] drm: display: Set fwnode for aux bus devices

Il 23/10/24 21:13, Saravana Kannan ha scritto:
> fwnode needs to be set for a device for fw_devlink to be able to
> track/enforce its dependencies correctly. Without this, you'll see error
> messages like this when the supplier has probed and tries to make sure
> all its fwnode consumers are linked to it using device links:
> 
> mediatek-drm-dp 1c500000.edp-tx: Failed to create device link (0x180) with backlight-lcd0
> tegra-xusb-padctl 3520000.padctl: Failed to create device link (0x180) with 1-0008
> 
> Reported-by: "Nícolas F. R. A. Prado" <nfraprado@...labora.com>
> Closes: https://lore.kernel.org/all/7b995947-4540-4b17-872e-e107adca4598@notapiano/
> Tested-by: "Nícolas F. R. A. Prado" <nfraprado@...labora.com>
> Reported-by: Jon Hunter <jonathanh@...dia.com>
> Closes: https://lore.kernel.org/all/20240910130019.35081-1-jonathanh@nvidia.com/
> Signed-off-by: Saravana Kannan <saravanak@...gle.com>
> ---

On MT8186, MT8192, MT8195 Chromebooks:

Tested-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>