target/linux/bcm27xx/patches-5.4/950-0404-ARM-dts-Declare-RPi-4B-SD-card-power-regulator.patch

   1 From ade82688b687b3340ca5e7883646ad51291d49cd 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  3 files changed, 13 insertions(+), 2 deletions(-)
  14
  15 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  16 +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  17 @@ -122,6 +122,16 @@
  18                 states = <1800000 0x1
  19                           3300000 0x0>;
  20         };
  21 +
  22 +       sd_vcc_reg: sd_vcc_reg {
  23 +               compatible = "regulator-fixed";
  24 +               regulator-name = "vcc-sd";
  25 +               regulator-min-microvolt = <3300000>;
  26 +               regulator-max-microvolt = <3300000>;
  27 +               regulator-boot-on;
  28 +               enable-active-high;
  29 +               gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
  30 +       };
  31  };
  32
  33  &sdhost {
  34 @@ -132,6 +142,7 @@
  35         status = "okay";
  36         broken-cd;
  37         vqmmc-supply = <&sd_io_1v8_reg>;
  38 +       vmmc-supply = <&sd_vcc_reg>;
  39  };
  40
  41  &genet {