linux-kernel - [PATCH] arm64: defconfig: enable regulator to fix mt8173 regression

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Message-Id: <20211011125301.3440033-1-adrian.ratiu@collabora.com>
Date:   Mon, 11 Oct 2021 15:53:01 +0300
From:   Adrian Ratiu <adrian.ratiu@...labora.com>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-mediatek@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com, "kernelci.org bot" <bot@...nelci.org>,
        Guillaume Tucker <guillaume.tucker@...labora.com>,
        Enric Balletbo Serra <eballetbo@...il.com>
Subject: [PATCH] arm64: defconfig: enable regulator to fix mt8173 regression

A regression was introduced on some mediatek boards starting with
v5.15-rc1 in commit 109fd20601e2b ("arm64: dts: mediatek: mt8173:
Add domain supply for mfg_async") which effectively changed the
regulator from the always-on dummy to DA9211 without explicitely
enabling it, causing failures like the these caught by KernelCI
on Hana Chromebooks [1]:

mtk-power-controller 10006000.syscon:power-controller: supply domain not found, using dummy regulator
mtu3 11271000.usb: supply vbus not found, using dummy regulator
xhci-mtk 11270000.usb: supply vbus not found, using dummy regulator

There might be another bug linking these power domains in the
mediatek PM driver, but that is a separate issue wich needs
addressing, for now just fix the obvious regression due to the
new regulator requirement.

[1] https://github.com/kernelci/kernelci-project/issues/66
Reported-by: "kernelci.org bot" <bot@...nelci.org>
Cc: Guillaume Tucker <guillaume.tucker@...labora.com>
Suggested-by: Enric Balletbo Serra <eballetbo@...il.com>
Signed-off-by: Adrian Ratiu <adrian.ratiu@...labora.com>
---
 arch/arm64/configs/defconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig
index 156d96afbbfc..4901cc1213bb 100644
--- a/arch/arm64/configs/defconfig
+++ b/arch/arm64/configs/defconfig
@@ -616,6 +616,7 @@ CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_REGULATOR_AXP20X=y
 CONFIG_REGULATOR_BD718XX=y
 CONFIG_REGULATOR_BD9571MWV=y
+CONFIG_REGULATOR_DA9211=y
 CONFIG_REGULATOR_FAN53555=y
 CONFIG_REGULATOR_GPIO=y
 CONFIG_REGULATOR_HI6421V530=y
-- 
2.33.0