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arm64: dts: exynos: Add reserved memory for pstore on E850-96

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Reserve a 2 MiB memory region to record kmsg dumps, console, ftrace and
userspace messages. The implemented memory split allows capturing and
reading corresponding ring buffers:
  * dmesg: 6 dumps, 128 KiB each
  * console: 128 KiB
  * ftrace: 128 KiB for each of 8 CPUs (1 MiB total)
  * userspace messages: 128 KiB

Signed-off-by: Sam Protsenko <semen.protsenko@linaro.org>
Link: https://lore.kernel.org/r/20231008033633.21304-1-semen.protsenko@linaro.org
[krzysztof: move the node to alphabetically sorted position]
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
This commit is contained in:
Sam Protsenko 2023-10-07 22:36:33 -05:00 committed by Krzysztof Kozlowski
parent f28dde3959
commit 23e4a49943
1 changed files with 15 additions and 0 deletions
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15
arch/arm64/boot/dts/exynos/exynos850-e850-96.dts
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@ -141,6 +141,21 @@ reg_usb_host_vbus: regulator-1 {
gpio = <&gpa3 5 GPIO_ACTIVE_LOW>;
};
reserved-memory {
#address-cells = <2>;
#size-cells = <1>;
ranges;
ramoops@f0000000 {
compatible = "ramoops";
reg = <0x0 0xf0000000 0x200000>;
record-size = <0x20000>;
console-size = <0x20000>;
ftrace-size = <0x100000>;
pmsg-size = <0x20000>;
};
};
/*
* RTC clock (XrtcXTI); external, must be 32.768 kHz.
*