target/linux/bcm27xx/patches-5.4/950-0664-dts-bcm2711-EMMC2-can-address-the-whole-first-GB.patch

   1 From 4f2da50bb75ec7b74a23e119062d945626398e30 Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Mon, 20 Apr 2020 11:25:18 +0100
   4 Subject: [PATCH] dts: bcm2711: EMMC2 can address the whole first GB
   5
   6 Although 0xfc000000 looks like an inaccessible RAM address (due to the
   7 peripheral mappings), with RAM mapped at 0xc0000000 (as it is on the
   8 30/32-bit VPU bus) this is actually 0x3c000000 in the ARM memory space,
   9 which is fine.
  10
  11 This difference is potentially the cause of some warnings seen in
  12 sdhci_send_command.
  13
  14 Fixes: "dts: bcm2711: Move emmc2 to its own 'bus'"
  15
  16 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  17 ---
  18  arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 2 +-
  19  1 file changed, 1 insertion(+), 1 deletion(-)
  20
  21 --- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  22 +++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
  23 @@ -223,7 +223,7 @@
  24                 #size-cells = <1>;
  25
  26                 ranges = <0x0 0x7e000000  0x0 0xfe000000  0x01800000>;
  27 -               dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x3c000000>;
  28 +               dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x40000000>;
  29
  30                 emmc2: emmc2@7e340000 {
  31                         compatible = "brcm,bcm2711-emmc2";