linux-kernel - Re: [PATCH] power: supply: qcom_battmgr: Register the power supplies after PDR is up

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Message-ID: <d9cf7d9d-60d9-4637-97bf-c9840452899e@linaro.org>
Date: Wed, 3 Jan 2024 13:32:33 +0100
From: Konrad Dybcio <konrad.dybcio@...aro.org>
To: Bjorn Andersson <andersson@...nel.org>, Sebastian Reichel <sre@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
 Sebastian Reichel <sebastian.reichel@...labora.com>,
 linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
 linux-kernel@...r.kernel.org, Xilin Wu <wuxilin123@...il.com>
Subject: Re: [PATCH] power: supply: qcom_battmgr: Register the power supplies
 after PDR is up

On 3.01.2024 13:32, Konrad Dybcio wrote:
> Commit b43f7ddc2b7a ("power: supply: qcom_battmgr: Register the power
> supplies after PDR is up") moved the devm_power_supply_register() calls
> so that the power supply devices are not registered before we go through
> the entire initialization sequence (power up the ADSP remote processor,
> wait for it to come online, coordinate with userspace..).
> 
> Some firmware versions (e.g. on SM8550) seem to leave battmgr at least
> partly initialized when exiting the bootloader and loading Linux. Check
> if the power supply devices are registered before consuming the battmgr
> notifications.
> 
> Fixes: b43f7ddc2b7a ("power: supply: qcom_battmgr: Register the power supplies after PDR is up")
> Reported-by: Xilin Wu <wuxilin123@...il.com>
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
Please ignore, I didn't update the commit title.

Konrad