| Message ID | 20240130-galaxy-tab-s-cleanup-v1-3-d4e17857241d@grimler.se (mailing list archive) |
|---|---|
| State | Accepted |
| Headers | show |
| Series | ARM: dts: samsung: enable wifi and cleanup exynos5420-galaxy-tab dts'es | expand |
On Tue, 30 Jan 2024 21:40:41 +0100, Henrik Grimler wrote: > 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. > > Applied, thanks! [3/3] ARM: dts: samsung: exynos5420-galaxy-tab-common: decrease available memory https://git.kernel.org/krzk/linux/c/9a5dbb835fd396c78da34b26ee91db6d529d096d Best regards,
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 d569fac29b18..ac929e282c84 100644 --- a/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi +++ b/arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi @@ -40,7 +40,7 @@ chosen { memory@20000000 { device_type = "memory"; - reg = <0x20000000 0xc0000000>; + reg = <0x20000000 0xbfa00000>; }; firmware@2073000 {
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> --- Similar fix was applied for the exynos5422 odroids in commit 6591a02e17e6 ("ARM: dts: reduce total RAM by 22 MiB for exynos5422-odroidxu3"): https://lore.kernel.org/all/1421842972-25807-1-git-send-email-m.szyprowski@samsung.com/ --- arch/arm/boot/dts/samsung/exynos5420-galaxy-tab-common.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)