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44 lines
1.2 KiB
Diff
44 lines
1.2 KiB
Diff
From 03bd617d5ba9124a59e86f285385b95415962af7 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Tue, 30 Jul 2019 12:37:02 +0100
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Subject: [PATCH] ARM: dts: Declare RPi 4B SD card power regulator
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Later revisions of the Raspberry Pi 4B have a separate control over the
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SD card power. Expose that control to Linux as a fixed regulator with
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a GPIO enable.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++
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arch/arm/configs/bcm2711_defconfig | 2 +-
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arch/arm64/configs/bcm2711_defconfig | 2 +-
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3 files changed, 13 insertions(+), 2 deletions(-)
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--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
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+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
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@@ -122,6 +122,16 @@
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states = <1800000 0x1
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3300000 0x0>;
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};
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+
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+ sd_vcc_reg: sd_vcc_reg {
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+ compatible = "regulator-fixed";
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+ regulator-name = "vcc-sd";
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+ regulator-min-microvolt = <3300000>;
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+ regulator-max-microvolt = <3300000>;
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+ regulator-boot-on;
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+ enable-active-high;
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+ gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
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+ };
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};
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&sdhost {
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@@ -132,6 +142,7 @@
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status = "okay";
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broken-cd;
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vqmmc-supply = <&sd_io_1v8_reg>;
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+ vmmc-supply = <&sd_vcc_reg>;
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};
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&leds {
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