brcm2708: update to latest patches from RPi foundation

[openwrt/staging/chunkeey.git] / target / linux / brcm2708 / patches-4.19 / 950-0805-bcm2838.dtsi-Use-BCM2711-PCIe-compatible-string.patch

diff --git a/target/linux/brcm2708/patches-4.19/950-0805-bcm2838.dtsi-Use-BCM2711-PCIe-compatible-string.patch b/target/linux/brcm2708/patches-4.19/950-0805-bcm2838.dtsi-Use-BCM2711-PCIe-compatible-string.patch
new file mode 100644 (file)
index 0000000..9286c9b
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0805-bcm2838.dtsi-Use-BCM2711-PCIe-compatible-string.patch
@@ -0,0 +1,29 @@
+From bacf6a02fe12125d2d675f0c6238d9265d31b45f 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
+@@ -327,7 +327,8 @@
+                       #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>;