diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.4/950-0420-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.4/950-0420-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.4/950-0420-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch b/target/linux/bcm27xx/patches-5.4/950-0420-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch new file mode 100644 index 0000000000..a69feb50b4 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.4/950-0420-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch @@ -0,0 +1,41 @@ +From ade82688b687b3340ca5e7883646ad51291d49cd Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.org> +Date: Tue, 30 Jul 2019 12:37:02 +0100 +Subject: [PATCH] ARM: dts: Declare RPi 4B SD card power regulator + +Later revisions of the Raspberry Pi 4B have a separate control over the +SD card power. Expose that control to Linux as a fixed regulator with +a GPIO enable. + +Signed-off-by: Phil Elwell <phil@raspberrypi.org> +--- + arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++ + 3 files changed, 13 insertions(+), 2 deletions(-) + +--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts ++++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts +@@ -122,6 +122,16 @@ + states = <1800000 0x1 + 3300000 0x0>; + }; ++ ++ sd_vcc_reg: sd_vcc_reg { ++ compatible = "regulator-fixed"; ++ regulator-name = "vcc-sd"; ++ regulator-min-microvolt = <3300000>; ++ regulator-max-microvolt = <3300000>; ++ regulator-boot-on; ++ enable-active-high; ++ gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>; ++ }; + }; + + &sdhost { +@@ -132,6 +142,7 @@ + status = "okay"; + broken-cd; + vqmmc-supply = <&sd_io_1v8_reg>; ++ vmmc-supply = <&sd_vcc_reg>; + }; + + &genet { |