From 8be8dc74799fe7c0e09dfa53aa41e954ffba291c Mon Sep 17 00:00:00 2001 From: Phil Elwell 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 --- 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>;