From 7bff1d35c1294c011b0269b8eaeb8f930df386fe Mon Sep 17 00:00:00 2001 From: Artur Weber Date: Sat, 17 Feb 2024 20:02:47 +0100 Subject: [PATCH] ARM: dts: exynos4212-tab3: limit usable memory range The stock bootloader on the Samsung Galaxy Tab 3 8.0 provides an incorrect available memory range over ATAG_MEM. Limit the usable memory in the DTS to prevent it from doing so, without having to disable ATAG support. Signed-off-by: Artur Weber Reviewed-by: Henrik Grimler Link: https://lore.kernel.org/r/20240217-tab3-limit-usable-memory-range-v1-1-49cc9c86a5cc@gmail.com Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi index e5254e32aa8f..9bc05961577d 100644 --- a/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi +++ b/arch/arm/boot/dts/samsung/exynos4212-tab3.dtsi @@ -45,6 +45,12 @@ /* Default S-BOOT bootloader loads initramfs here */ linux,initrd-start = <0x42000000>; linux,initrd-end = <0x42800000>; + + /* + * Stock bootloader provides incorrect memory size in ATAG_MEM; + * override it here + */ + linux,usable-memory-range = <0x40000000 0x3fc00000>; }; firmware@204f000 {