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 f525b2f5e4e083ba499dc0ad11866fb78146f37c..3532f1e8e902b73c0d4ba60ac423db4b4208df0e 100644 (file)
--- 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 {