linux-kernel - Re: [PATCH v4] arm64: dts: qcom: sc7280: add slimbus DT node

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Message-ID: <20240226154136.GH8422@thinkpad>
Date: Mon, 26 Feb 2024 21:11:36 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Viken Dadhaniya <quic_vdadhani@...cinc.com>
Cc: andersson@...nel.org, konrad.dybcio@...aro.org, robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org, quic_msavaliy@...cinc.com,
	quic_vtanuku@...cinc.com, quic_cchiluve@...cinc.com
Subject: Re: [PATCH v4] arm64: dts: qcom: sc7280: add slimbus DT node

On Mon, Feb 19, 2024 at 10:44:55AM +0530, Viken Dadhaniya wrote:
> Populate the DTSI node for slimbus instance to be
> used by bluetooth FM audio case.
> 

Just curious, where is the patch to enable bluetooth FM?

> Signed-off-by: Viken Dadhaniya <quic_vdadhani@...cinc.com>
> ---
> v3 -> v4:
> - Correct email address for linux-arm-msm.
> 
> v2 -> v3:
> - Fix patch title by adding "PATCH" string.
> - Update commit log.
> 
> v1 -> v2:
> - change 0x0 -> 0 to reg property.
> - reorder the DT property.
> - change node tag slim_msm to slim.
> ---
> ---
>  arch/arm64/boot/dts/qcom/sc7280.dtsi | 25 +++++++++++++++++++++++++
>  1 file changed, 25 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> index 581818676a4c..1d6afde915aa 100644
> --- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
> @@ -2672,6 +2672,31 @@
>  			status = "disabled";
>  		};
>  
> +		slimbam: dma-controller@...4000 {
> +			compatible = "qcom,bam-v1.7.0";
> +			reg = <0 0x03a84000 0 0x20000>;
> +			interrupts = <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			qcom,controlled-remotely;
> +			num-channels  = <31>;
> +			qcom,ee = <1>;
> +			qcom,num-ees = <2>;
> +			iommus = <&apps_smmu 0x1826 0x0>;
> +			status = "disabled";
> +		};
> +
> +		slim: slim-ngd@...0000 {
> +			compatible = "qcom,slim-ngd-v1.5.0";
> +			reg = <0 0x03ac0000 0 0x2c000>;
> +			interrupts = <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>;
> +			dmas = <&slimbam 3>, <&slimbam 4>;
> +			dma-names = "rx", "tx";
> +			iommus = <&apps_smmu 0x1826 0x0>;

Does both nodes need IOMMU translation with same SID? This hints that only one
needed.

- Mani

> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +			status = "disabled";
> +		};
> +
>  		lpass_hm: clock-controller@...0000 {
>  			compatible = "qcom,sc7280-lpasshm";
>  			reg = <0 0x03c00000 0 0x28>;
> -- 
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member 
> of Code Aurora Forum, hosted by The Linux Foundation
> 

-- 
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