From: Artur Weber <aweber.kernel@gmail.com>
To: Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Conor Dooley <conor+dt@kernel.org>,
Alim Akhtar <alim.akhtar@samsung.com>
Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org,
~postmarketos/upstreaming@lists.sr.ht,
Artur Weber <aweber.kernel@gmail.com>
Subject: [PATCH] ARM: dts: exynos4212-tab3: limit usable memory range
Date: Sat, 17 Feb 2024 20:02:47 +0100 [thread overview]
Message-ID: <20240217-tab3-limit-usable-memory-range-v1-1-49cc9c86a5cc@gmail.com> (raw)
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 <aweber.kernel@gmail.com>
---
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 @@ chosen {
/* 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 {
---
base-commit: 0f1dd5e91e2ba3990143645faff2bcce2d99778e
change-id: 20240217-tab3-limit-usable-memory-range-1d1ffa8dc44d
Best regards,
--
Artur Weber <aweber.kernel@gmail.com>
next reply other threads:[~2024-02-17 19:02 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-02-17 19:02 Artur Weber [this message]
2024-02-18 10:24 ` [PATCH] ARM: dts: exynos4212-tab3: limit usable memory range Henrik Grimler
2024-02-19 7:44 ` Krzysztof Kozlowski
2024-02-19 19:49 ` Artur Weber
2024-02-21 8:26 ` Krzysztof Kozlowski
2024-02-22 15:55 ` Krzysztof Kozlowski
2024-03-16 17:28 ` Artur Weber
2024-03-26 16:54 ` Krzysztof Kozlowski
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