linux-kernel - [PATCH v6 07/12] arm64: dts: mediatek: set vmc regulator as always on

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Message-Id: <20230203-evk-board-support-v6-7-8d6b1cfe7f29@baylibre.com>
Date:   Wed, 26 Apr 2023 12:49:07 +0200
From:   amergnat@...libre.com
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-watchdog@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mediatek@...ts.infradead.org,
        Alexandre Mergnat <amergnat@...libre.com>,
        Fabien Parent <fparent@...libre.com>,
        Kevin Hilman <khilman@...libre.com>
Subject: [PATCH v6 07/12] arm64: dts: mediatek: set vmc regulator as always
 on

From: Fabien Parent <fparent@...libre.com>

On downstream, we observe that the MSDC IP (used by the emmc, the micro
SD card and the WiFi) isn't working properly if the VMC regulator is
shutdown.

Make sure it is always on.

Signed-off-by: Fabien Parent <fparent@...libre.com>
Tested-by: Kevin Hilman <khilman@...libre.com>
Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index cd920d09c3fe..ceed6cb8152b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -137,6 +137,11 @@ &mt6357_pmic {
 	#interrupt-cells = <2>;
 };
 
+/* Needed by MSDC IP */
+&mt6357_vmc_reg {
+	regulator-always-on;
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {

-- 
2.25.1