From: Parikshit Pareek <quic_ppareek@quicinc.com>

Introduce sdam_0 node, which is to be used via nvmem for power on
reasons during reboot. Add supported PoN reaons supported via sdam_0
node.

Signed-off-by: Parikshit Pareek <quic_ppareek@quicinc.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi b/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
index 5abdc239d3a6..49bf7b08f5b6 100644
--- a/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
+++ b/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
@@ -88,6 +88,14 @@ trip1 {
 			};
 		};
 	};
+
+	reboot_reason {
+		compatible = "nvmem-reboot-mode";
+		nvmem-cells = <&reboot_reason>;
+		nvmem-cell-names = "reboot-mode";
+		mode-recovery = <0x01>;
+		mode-bootloader = <0x02>;
+	};
 };
 
 &spmi_bus {
@@ -133,6 +141,19 @@ pmm8654au_0_gpios: gpio@8800 {
 			interrupt-controller;
 			#interrupt-cells = <2>;
 		};
+
+		pmm8654au_0_sdam_0: 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>;
+			};
+		};
 	};
 
 	pmm8654au_1: pmic@2 {
-- 
2.37.2

On 13/04/2023 15:17, Bartosz Golaszewski wrote:
> From: Parikshit Pareek <quic_ppareek@quicinc.com>
> 
> Introduce sdam_0 node, which is to be used via nvmem for power on
> reasons during reboot. Add supported PoN reaons supported via sdam_0
> node.
> 
> Signed-off-by: Parikshit Pareek <quic_ppareek@quicinc.com>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi | 21 +++++++++++++++++++++
>  1 file changed, 21 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi b/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
> index 5abdc239d3a6..49bf7b08f5b6 100644
> --- a/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sa8775p-pmics.dtsi
> @@ -88,6 +88,14 @@ trip1 {
>  			};
>  		};
>  	};
> +
> +	reboot_reason {

No underscores in node names. This is almost always called reboot-mode.
Please, do not use downstream naming and conventions.

> +		compatible = "nvmem-reboot-mode";
> +		nvmem-cells = <&reboot_reason>;
> +		nvmem-cell-names = "reboot-mode";
> +		mode-recovery = <0x01>;
> +		mode-bootloader = <0x02>;
> +	};
>  };
Best regards,
Krzysztof