f07e572f64
bcm2708: boot tested on RPi B+ v1.2 bcm2709: boot tested on RPi 3B v1.2 and RPi 4B v1.1 4G bcm2710: boot tested on RPi 3B v1.2 bcm2711: boot tested on RPi 4B v1.1 4G Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
34 lines
1.0 KiB
Diff
34 lines
1.0 KiB
Diff
From 7b307016ed13cbb65e08b6a704912e5c9e5b81ac Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.com>
|
|
Date: Tue, 14 Apr 2020 15:25:02 +0100
|
|
Subject: [PATCH] ARM: dts: bcm2711: Restrict CMA to first 768MB
|
|
|
|
The downstream 32-bit 2711 kernel configuration enables HIGHMEM for
|
|
access to more physical RAM. The HIGHMEM zone starts at 0x30000000
|
|
(768MB), and allowing the CMA zone to overlap that area causes a
|
|
failure during CMA activation.
|
|
|
|
Avoid the overlap by limiting CMA to the first 768MB. This is overly
|
|
restrictive on a 64-bit kernel, but shouldn't cause any practical
|
|
problems.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
|
|
---
|
|
arch/arm/boot/dts/bcm2711-rpi.dtsi | 5 +++++
|
|
1 file changed, 5 insertions(+)
|
|
|
|
--- a/arch/arm/boot/dts/bcm2711-rpi.dtsi
|
|
+++ b/arch/arm/boot/dts/bcm2711-rpi.dtsi
|
|
@@ -45,6 +45,11 @@
|
|
};
|
|
};
|
|
|
|
+&cma {
|
|
+ /* Limit cma to the lower 768MB to allow room for HIGHMEM on 32-bit */
|
|
+ alloc-ranges = <0x0 0x00000000 0x30000000>;
|
|
+};
|
|
+
|
|
&soc {
|
|
thermal: thermal@7d5d2200 {
|
|
compatible = "brcm,avs-tmon-bcm2711";
|