From: Henrik Grimler <henrik@grimler.se>
Date: Tue, 30 Jan 2024 20:40:41 +0000 (+0100)
Subject: ARM: dts: samsung: exynos5420-galaxy-tab: decrease available memory
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=9a5dbb835fd396c78da34b26ee91db6d529d096d;p=linux.git

ARM: dts: samsung: exynos5420-galaxy-tab: decrease available memory

The last 6 MiB are used by trustzone firmware, and cannot be used by
Linux.  Currently we are saved by that the proprietary bootloader
(sboot) passes available memory to kernel through ATAG_MEM.  Change
memory range in any case so that we do not have to rely on ATAG_MEM.

Signed-off-by: Henrik Grimler <henrik@grimler.se>
Link: https://lore.kernel.org/r/20240130-galaxy-tab-s-cleanup-v1-3-d4e17857241d@grimler.se
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---

diff --git a/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi b/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi
index f525b2f5e4e08..3532f1e8e902b 100644
--- a/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi
@@ -39,7 +39,7 @@
 
 	memory@20000000 {
 		device_type = "memory";
-		reg = <0x20000000 0xc0000000>;
+		reg = <0x20000000 0xbfa00000>;
 	};
 
 	firmware@2073000 {