arm64: dts: qcom: pmk8550: add reboot-mode node using sdam_2 nvmem

Introduce sdam_2 node, which is to be used via nvmem for power on
reasons during reboot. Add supported PoN reasons supported via sdam_2
node.

Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230503-topic-sm8450-upstream-reboot-reason-v1-2-c5ac3dd5b49f@linaro.org

diff --git a/arch/arm64/boot/dts/qcom/pmk8550.dtsi b/arch/arm64/boot/dts/qcom/pmk8550.dtsi
index 201efed..8c897d4 100644 (file)
--- a/arch/arm64/boot/dts/qcom/pmk8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/pmk8550.dtsi
@@ -8,6 +8,16 @@
 #include <dt-bindings/interrupt-controller/irq.h>
 #include <dt-bindings/spmi/spmi.h>
 
+/ {
+       reboot-mode {
+               compatible = "nvmem-reboot-mode";
+               nvmem-cells = <&reboot_reason>;
+               nvmem-cell-names = "reboot-mode";
+               mode-recovery = <0x01>;
+               mode-bootloader = <0x02>;
+       };
+};
+
 &spmi_bus {
        pmk8550: pmic@0 {
                compatible = "qcom,pm8550", "qcom,spmi-pmic";
@@ -42,6 +52,19 @@
                        status = "disabled";
                };
 
+               pmk8550_sdam_2: nvram@7100 {
+                       compatible = "qcom,spmi-sdam";
+                       reg = <0x7100>;
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+                       ranges = <0 0x7100 0x100>;
+
+                       reboot_reason: reboot-reason@48 {
+                               reg = <0x48 0x1>;
+                               bits = <1 7>;
+                       };
+               };
+
                pmk8550_gpios: gpio@8800 {
                        compatible = "qcom,pmk8550-gpio", "qcom,spmi-gpio";
                        reg = <0xb800>;