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39 lines
1.6 KiB
Diff
39 lines
1.6 KiB
Diff
From 4bda0546e6690a9f52773a94fa77b3b91d228cd8 Mon Sep 17 00:00:00 2001
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From: Christian Hewitt <christianshewitt@gmail.com>
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Date: Thu, 26 Jan 2023 16:15:59 +0000
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Subject: [PATCH 035/124] FROMGIT(6.3): arm64: dts: meson: bananapi-m5: switch
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VDDIO_C pin to OPEN_DRAIN
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For proper warm (re)boot from SD card the BPI-M5 board requires TFLASH_VDD_EN
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and VDDIO_C pins to be switched to high impedance mode. This can be achieved
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using OPEN_DRAIN instead of ACTIVE_HIGH to leave the GPIO pins in input mode
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and retain high state (pin has the pull-up).
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This change is inspired by meson-sm1-odroid.dtsi where OPEN_DRAIN has been
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used to resolve similar problems with the Odroid C4 board (TF_IO in the C4
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dts is the equivalent regulator).
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Fixes 976e920183e4 ("arm64: dts: meson-sm1: add Banana PI BPI-M5 board dts")
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Suggested-by: Neil Armstrong <neil.armstrong@linaro.org>
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Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
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---
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arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
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index cadba194b149..e8a23861013f 100644
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--- a/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
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+++ b/arch/arm64/boot/dts/amlogic/meson-sm1-bananapi-m5.dts
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@@ -123,7 +123,7 @@ vddio_c: regulator-vddio_c {
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regulator-min-microvolt = <1800000>;
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regulator-max-microvolt = <3300000>;
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- enable-gpio = <&gpio_ao GPIOE_2 GPIO_ACTIVE_HIGH>;
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+ enable-gpio = <&gpio_ao GPIOE_2 GPIO_OPEN_DRAIN>;
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enable-active-high;
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regulator-always-on;
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--
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2.34.1
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