diff mbox series

[v2,4/4] ARM: dts: qcom: msm8226: Add IMEM node

Message ID 20230520121933.15533-5-matti.lehtimaki@gmail.com
State New
Headers
Series PMU, rpm-stats and IMEM for MSM8226 |

Commit Message

Matti Lehtimäki May 20, 2023, 12:19 p.m. UTC 
  This enables userspace to signal the bootloader to go into the
bootloader or recovery mode.

The magic values can be found in both the downstream kernel and the LK
kernel (bootloader).

Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>
---
Changes in v2:
  - Always enable IMEM node
  - Move reboot-mode magic numbers to platform,
    those should be always the same
---
 arch/arm/boot/dts/qcom-msm8226.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

Comments

Luca Weiss May 22, 2023, 4:11 p.m. UTC | #1 
On Samstag, 20. Mai 2023 14:19:33 CEST Matti Lehtimäki wrote:
> This enables userspace to signal the bootloader to go into the
> bootloader or recovery mode.
> 
> The magic values can be found in both the downstream kernel and the LK
> kernel (bootloader).
> 
> Signed-off-by: Matti Lehtimäki <matti.lehtimaki@gmail.com>

Reviewed-by: Luca Weiss <luca@z3ntu.xyz>

> ---
> Changes in v2:
>   - Always enable IMEM node
>   - Move reboot-mode magic numbers to platform,
>     those should be always the same
> ---
>  arch/arm/boot/dts/qcom-msm8226.dtsi | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom-msm8226.dtsi
> b/arch/arm/boot/dts/qcom-msm8226.dtsi index 8644540f5aae..284b7c666fea
> 100644
> --- a/arch/arm/boot/dts/qcom-msm8226.dtsi
> +++ b/arch/arm/boot/dts/qcom-msm8226.dtsi
> @@ -641,6 +641,20 @@ smd-edge {
>  				label = "lpass";
>  			};
>  		};
> +
> +		sram@fe805000 {
> +			compatible = "qcom,msm8226-imem", "syscon", 
"simple-mfd";
> +			reg = <0xfe805000 0x1000>;
> +
> +			reboot-mode {
> +				compatible = "syscon-reboot-mode";
> +				offset = <0x65c>;
> +
> +				mode-bootloader = <0x77665500>;
> +				mode-normal     = <0x77665501>;
> +				mode-recovery   = <0x77665502>;
> +			};
> +		};
>  	};
> 
>  	timer {
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/qcom-msm8226.dtsi b/arch/arm/boot/dts/qcom-msm8226.dtsi
index 8644540f5aae..284b7c666fea 100644
--- a/arch/arm/boot/dts/qcom-msm8226.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8226.dtsi
@@ -641,6 +641,20 @@  smd-edge {
 				label = "lpass";
 			};
 		};
+
+		sram@fe805000 {
+			compatible = "qcom,msm8226-imem", "syscon", "simple-mfd";
+			reg = <0xfe805000 0x1000>;
+
+			reboot-mode {
+				compatible = "syscon-reboot-mode";
+				offset = <0x65c>;
+
+				mode-bootloader = <0x77665500>;
+				mode-normal     = <0x77665501>;
+				mode-recovery   = <0x77665502>;
+			};
+		};
 	};
 
 	timer {