target/linux/brcm2708/patches-4.19/950-0803-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch

   1 From 03bd617d5ba9124a59e86f285385b95415962af7 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Tue, 30 Jul 2019 12:37:02 +0100
   4 Subject: [PATCH] ARM: dts: Declare RPi 4B SD card power regulator
   5
   6 Later revisions of the Raspberry Pi 4B have a separate control over the
   7 SD card power. Expose that control to Linux as a fixed regulator with
   8 a GPIO enable.
   9
  10 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  11 ---
  12  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 11 +++++++++++
  13  arch/arm/configs/bcm2711_defconfig    |  2 +-
  14  arch/arm64/configs/bcm2711_defconfig  |  2 +-
  15  3 files changed, 13 insertions(+), 2 deletions(-)
  16
  17 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  18 +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  19 @@ -122,6 +122,16 @@
  20                 states = <1800000 0x1
  21                           3300000 0x0>;
  22         };
  23 +
  24 +       sd_vcc_reg: sd_vcc_reg {
  25 +               compatible = "regulator-fixed";
  26 +               regulator-name = "vcc-sd";
  27 +               regulator-min-microvolt = <3300000>;
  28 +               regulator-max-microvolt = <3300000>;
  29 +               regulator-boot-on;
  30 +               enable-active-high;
  31 +               gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
  32 +       };
  33  };
  34
  35  &sdhost {
  36 @@ -132,6 +142,7 @@
  37         status = "okay";
  38         broken-cd;
  39         vqmmc-supply = <&sd_io_1v8_reg>;
  40 +       vmmc-supply = <&sd_vcc_reg>;
  41  };
  42
  43  &leds {