linux-kernel - Re: [PATCH v2] thermal: tegra-bpmp: Handle offline zones

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Message-ID: <f0d51904-d363-cb76-cd6f-f1ebefd0aa5a@linaro.org>
Date:   Thu, 30 Mar 2023 23:14:40 +0200
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     Mikko Perttunen <cyndis@...si.fi>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     Mikko Perttunen <mperttunen@...dia.com>, linux-pm@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] thermal: tegra-bpmp: Handle offline zones

On 30/03/2023 11:49, Mikko Perttunen wrote:
> From: Mikko Perttunen <mperttunen@...dia.com>
> 
> Thermal zones located in power domains may not be accessible when
> the domain is powergated. In this situation, reading the temperature
> will return -BPMP_EFAULT. When evaluating trips, BPMP will internally
> use -256C as the temperature for offline zones.
> 
> For smooth operation, for offline zones, return -EAGAIN when reading
> the temperature and allow registration of zones even if they are
> offline during probe.
> 
> Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>

Applied, thanks

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