Commit 23e4a499 authored by Sam Protsenko's avatar Sam Protsenko Committed by Krzysztof Kozlowski
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arm64: dts: exynos: Add reserved memory for pstore on E850-96 



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: default avatarSam 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: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
parent f28dde39

arch/arm64/boot/dts/exynos/exynos850-e850-96.dts

+15 −0
Original line number Diff line number Diff line
@@ -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.

	 *