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>

1 files changed, 45 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0419-ARM-dts-bcm2711-force-CMA-into-first-GB-of-memory.patch b/target/linux/bcm27xx/patches-5.4/950-0419-ARM-dts-bcm2711-force-CMA-into-first-GB-of-memory.patch
new file mode 100644
index 0000000000..44f60d610f
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0419-ARM-dts-bcm2711-force-CMA-into-first-GB-of-memory.patch
@@ -0,0 +1,45 @@
+From 4bcb99a967998d255ef009bb0b6880ae99c6f6bf Mon Sep 17 00:00:00 2001
+From: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Date: Wed, 6 Nov 2019 10:59:44 +0100
+Subject: [PATCH] ARM: dts: bcm2711: force CMA into first GB of memory
+
+arm64 places the CMA in ZONE_DMA32, which is not good enough for the
+Raspberry Pi 4 since it contains peripherals that can only address the
+first GB of memory. Explicitly place the CMA into that area.
+
+Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
+Acked-by: Stefan Wahren <wahrenst@gmx.net>
+Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
+---
+ arch/arm/boot/dts/bcm2711.dtsi | 20 ++++++++++++++++++++
+ 1 file changed, 20 insertions(+)
+
+--- a/arch/arm/boot/dts/bcm2711.dtsi
++++ b/arch/arm/boot/dts/bcm2711.dtsi
+@@ -12,6 +12,26 @@
+ 
+ 	interrupt-parent = <&gicv2>;
+ 
++	reserved-memory {
++		#address-cells = <2>;
++		#size-cells = <1>;
++		ranges;
++
++		/*
++		 * arm64 reserves the CMA by default somewhere in ZONE_DMA32,
++		 * that's not good enough for the BCM2711 as some devices can
++		 * only address the lower 1G of memory (ZONE_DMA).
++		 */
++		linux,cma {
++			compatible = "shared-dma-pool";
++			size = <0x2000000>; /* 32MB */
++			alloc-ranges = <0x0 0x00000000 0x40000000>;
++			reusable;
++			linux,cma-default;
++		};
++	};
++
++
+ 	soc {
+ 		/*
+ 		 * Defined ranges: