target/linux/bcm27xx/patches-5.4/950-0640-dts-bcm2711-Move-emmc2-to-its-own-bus.patch

   1 From f97ba33547711d727fbbcb10eb046f8ac605a966 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Thu, 5 Dec 2019 18:02:08 +0000
   4 Subject: [PATCH] dts: bcm2711: Move emmc2 to its own "bus"
   5
   6 Moving the EMMC2 controller under a dedicated bus allows the firmware
   7 to patch the dma-ranges property for different memory sizes without
   8 affecting anything else.
   9
  10 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  11 ---
  12  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 22 ++++++++++++++++++++++
  13  1 file changed, 22 insertions(+)
  14
  15 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  16 +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  17 @@ -193,6 +193,8 @@
  18  #include "bcm2711-rpi.dtsi"
  19  #include "bcm283x-rpi-csi1-2lane.dtsi"
  20
  21 +/delete-node/ &emmc2;
  22 +
  23  / {
  24         chosen {
  25                 bootargs = "coherent_pool=1M 8250.nr_uarts=1";
  26 @@ -212,6 +214,26 @@
  27                 /delete-property/ ethernet;
  28                 /delete-property/ intc;
  29                 pcie0 = &pcie0;
  30 +               emmc2bus = &emmc2bus;
  31 +       };
  32 +
  33 +       emmc2bus: emmc2bus {
  34 +               compatible = "simple-bus";
  35 +               #address-cells = <2>;
  36 +               #size-cells = <1>;
  37 +
  38 +               ranges = <0x0 0x7e000000  0x0 0xfe000000  0x01800000>;
  39 +               dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x3c000000>;
  40 +
  41 +               emmc2: emmc2@7e340000 {
  42 +                       compatible = "brcm,bcm2711-emmc2";
  43 +                       status = "okay";
  44 +                       interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>;
  45 +                       clocks = <&clocks BCM2711_CLOCK_EMMC2>;
  46 +                       reg = <0x0 0x7e340000 0x100>;
  47 +                       vqmmc-supply = <&sd_io_1v8_reg>;
  48 +                       broken-cd;
  49 +               };
  50         };
  51
  52         /delete-node/ wifi-pwrseq;