950-0664-dts-bcm2711-EMMC2-can-address-the-whole-first-GB.patch

From 4f2da50bb75ec7b74a23e119062d945626398e30 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Mon, 20 Apr 2020 11:25:18 +0100
Subject: [PATCH] dts: bcm2711: EMMC2 can address the whole first GB

Although 0xfc000000 looks like an inaccessible RAM address (due to the
peripheral mappings), with RAM mapped at 0xc0000000 (as it is on the
30/32-bit VPU bus) this is actually 0x3c000000 in the ARM memory space,
which is fine.

This difference is potentially the cause of some warnings seen in
sdhci_send_command.

Fixes: "dts: bcm2711: Move emmc2 to its own 'bus'"

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
 arch/arm/boot/dts/bcm2711-rpi-4-b.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
+++ b/arch/arm/boot/dts/bcm2711-rpi-4-b.dts
@@ -223,7 +223,7 @@
 		#size-cells = <1>;
 
 		ranges = <0x0 0x7e000000  0x0 0xfe000000  0x01800000>;
-		dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x3c000000>;
+		dma-ranges = <0x0 0xc0000000  0x0 0x00000000  0x40000000>;
 
 		emmc2: emmc2@7e340000 {
 			compatible = "brcm,bcm2711-emmc2";