arm64: dts: apq8016-sbc: Add ramoops

Declare a ramoops memory segment to aid debugging for those without UART
access. Verified to carry console log when holding volume down for 15
seconds.

No memory region for ramoops-like support was found downstream, so the
arbitrarily picked region is the last MB of System RAM.

Cc: John Stultz <john.stultz@linaro.org>
Cc: Mart Raudsepp <leio@gentoo.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>

1 files changed, 11 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
index eac5389f2f38..a17f5b9a5de6 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
@@ -35,6 +35,17 @@
                 stdout-path = "serial0";
         };
 
+        reserved-memory {
+                ramoops@bff00000{
+                        compatible = "ramoops";
+                        reg = <0x0 0xbff00000 0x0 0x100000>;
+
+                        record-size = <0x20000>;
+                        console-size = <0x20000>;
+                        ftrace-size = <0x20000>;
+                };
+        };
+
         soc {
                 dma@7884000 {
                         status = "okay";