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784c93e3ca
The last 4 MiB of RAM on those devices is likely used by trustzone firmware, and is unusable under Linux. Change the device tree memory node accordingly. The proprietary bootloader (S-BOOT) passes these memory ranges through ATAG_MEM; this change allows us to have the correct memory ranges without relying on ATAG_MEM. Tested-by: Henrik Grimler <henrik@grimler.se> # i9300, i9305 Signed-off-by: Artur Weber <aweber.kernel@gmail.com> Link: https://lore.kernel.org/r/20240217-exynos4-memsize-fix-v1-1-7858e9c5f844@gmail.com Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
22 lines
484 B
Plaintext
22 lines
484 B
Plaintext
// SPDX-License-Identifier: GPL-2.0
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/dts-v1/;
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#include "exynos4412-galaxy-s3.dtsi"
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/ {
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model = "Samsung Galaxy S3 (GT-I9305) based on Exynos4412";
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compatible = "samsung,i9305", "samsung,midas", "samsung,exynos4412", "samsung,exynos4";
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chassis-type = "handset";
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/* bootargs are passed in by bootloader */
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memory@40000000 {
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device_type = "memory";
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reg = <0x40000000 0x7fc00000>;
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};
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};
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&i2c0_bus {
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/* SCL and SDA pins are swapped */
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samsung,pins = "gpd1-1", "gpd1-0";
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};
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