linux-kernel - Re: [PATCH mvebu v2 00/10] Armada 37xx: Fix cpufreq changing base CPU speed to 800 MHz from 1000 MHz

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Message-Id: <c0ade595-9bfa-4cfc-8c87-0e955173d5db@www.fastmail.com>
Date:   Sun, 21 Feb 2021 19:17:40 -0800
From:   nnet <nnet@...tmail.fm>
To:     Pali Rohár <pali@...nel.org>
Cc:     Marek Behún <kabel@...nel.org>,
        a.heider@...il.com, andrew@...n.ch, gerald@....net,
        gregory.clement@...tlin.com, kostap@...vell.com,
        linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, luka.perkov@...tura.hr,
        miquel.raynal@...tlin.com, mturquette@...libre.com,
        rmk+kernel@...linux.org.uk, sboyd@...nel.org, tmn505@...il.com,
        vladimir.vid@...tura.hr
Subject: Re: [PATCH mvebu v2 00/10] Armada 37xx: Fix cpufreq changing base CPU speed to 800 MHz from 1000 MHz

> Could you test if 1.155V voltage for L1 is stable on 1.2 GHz variant?

++#define MIN_VOLT_MV_FOR_L1_1200MHZ 1155
...
++              if (avs_min_l1 > dvfs->avs[0])
++                      avs_min_l1 = dvfs->avs[0];
++
++              if (dvfs->avs[1] < avs_min_l1)
++                      dvfs->avs[1] = avs_min_l1;

This works fine. Tested with switching 600MHz to 1.2GHz under load.