openwrt/target/linux/bcm27xx/patches-5.4/950-0405-bcm2838.dtsi-Use-BCM2711-PCIe-compatible-string.patch
Álvaro Fernández Rojas 77e97abf12 bcm27xx: update to latest patches from RPi foundation
Also removes random module and switches to new bcm2711 thermal driver.
Boot tested on RPi 4B v1.1 4G.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2020-05-28 19:12:43 +02:00

30 lines
1.1 KiB
Diff

From 8be8dc74799fe7c0e09dfa53aa41e954ffba291c Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.org>
Date: Fri, 12 Jul 2019 11:43:03 +0100
Subject: [PATCH] bcm2838.dtsi: Use BCM2711 PCIe compatible string
The BCM2711 PCIe controller has a limited address range in the B0
silicon, and the driver uses a compatible string to identify the
limitation. The current Pi 4 firmware will override the compatible
string if it detects a downstream DTB and it is running on a newer
revision but set the default value to enable the workaround for
backwards-compatibility with old firmware.
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
---
arch/arm/boot/dts/bcm2838.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/arch/arm/boot/dts/bcm2838.dtsi
+++ b/arch/arm/boot/dts/bcm2838.dtsi
@@ -314,7 +314,8 @@
#interrupt-cells = <1>;
#size-cells = <2>;
bus-range = <0x0 0x01>;
- compatible = "brcm,bcm7211-pcie", "brcm,bcm7445-pcie",
+ compatible = "brcm,bcm2711b0-pcie", // Safe value
+ "brcm,bcm2711-pcie",
"brcm,pci-plat-dev";
max-link-speed = <2>;
tot-num-pcie = <1>;