Re: [PATCH v3 6/6] arm64: dts: qcom: ipq5332: Add the IMEM node

[Krzysztof Kozlowski <krzk@kernel.org>]

On Sat, Feb 28, 2026 at 06:38:05PM +0530, Kathiravan Thirumoorthy wrote:
> Add the IMEM node to the device tree to extract debugging information
> like system restart reason, which is populated via IMEM. Define the
> IMEM region to enable this functionality.
> 
> As described, overall IMEM region is 80KB but only initial 4KB is
> accessible by all masters in the SoC.
> 
> Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
> ---
>  arch/arm64/boot/dts/qcom/ipq5332.dtsi | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/ipq5332.dtsi b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> index 45fc512a3bab221c0d99f819294abf63369987da..b5f87db419fe7c1cecd05b5a85745cc3971028e4 100644
> --- a/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> +++ b/arch/arm64/boot/dts/qcom/ipq5332.dtsi
> @@ -423,6 +423,17 @@ blsp1_spi2: spi@78b7000 {
>  			status = "disabled";
>  		};
>  
> +		sram@8600000 {
> +			compatible = "qcom,ipq5332-imem", "mmio-sram";
> +			reg = <0x08600000 0x14000>;
> +			ranges = <0 0x08600000 0x14000>;

Why?

> +
> +			no-memory-wc;
> +
> +			#address-cells = <1>;
> +			#size-cells = <1>;

Why? You do not have any children.

Best regards,
Krzysztof