linux-kernel - RE: [PATCH v2] clk: imx8qxp: Defer instead of failing probe

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Date: Tue, 2 Jul 2024 10:14:14 +0000
From: Peng Fan <peng.fan@....com>
To: Diogo Manuel Pais Silva <diogo.pais@...ontrol.com>
CC: "abelvesa@...nel.org" <abelvesa@...nel.org>, "linux-clk@...r.kernel.org"
	<linux-clk@...r.kernel.org>, "shawnguo@...nel.org" <shawnguo@...nel.org>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>, "s.hauer@...gutronix.de"
	<s.hauer@...gutronix.de>, "linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "sboyd@...nel.org"
	<sboyd@...nel.org>, "mturquette@...libre.com" <mturquette@...libre.com>,
	"festevam@...il.com" <festevam@...il.com>, "imx@...ts.linux.dev"
	<imx@...ts.linux.dev>, "EMC: linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH v2] clk: imx8qxp: Defer instead of failing probe

> Subject: [PATCH v2] clk: imx8qxp: Defer instead of failing probe
> 
> When of_clk_parent_fill is ran without all the parent clocks having
> been probed then the probe function will return -EINVAL, making it so
> that the probe isn't attempted again. As fw_devlink is on by default
> this does not usually happen, but if fw_devlink is disabled then it is
> very possible that the parent clock will be probed after the lpcg first
> attempt.
> 
> Signed-off-by: Diogo Silva <diogo.pais@...ontrol.com>

Reviewed-by: Peng Fan <peng.fan@....com>