linux-kernel - Re: [PATCH v2 8/9] ARM: dts: qcom: msm8226: Add BAM DMUX Ethernet/IP device

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Message-ID: <Z5dQ8Zu3zlSlkJj_@linaro.org>
Date: Mon, 27 Jan 2025 10:25:05 +0100
From: Stephan Gerhold <stephan.gerhold@...aro.org>
To: Luca Weiss <luca@...aweiss.eu>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
	Bjorn Andersson <andersson@...nel.org>,
	Mathieu Poirier <mathieu.poirier@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Stephan Gerhold <stephan@...hold.net>,
	Konrad Dybcio <konradybcio@...nel.org>,
	Matti Lehtimäki <matti.lehtimaki@...il.com>,
	linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 8/9] ARM: dts: qcom: msm8226: Add BAM DMUX Ethernet/IP
 device

On Sun, Jan 26, 2025 at 09:57:27PM +0100, Luca Weiss wrote:
> BAM DMUX is used as the network interface to the modem.
> 
> Signed-off-by: Luca Weiss <luca@...aweiss.eu>

Reviewed-by: Stephan Gerhold <stephan.gerhold@...aro.org>

> ---
>  arch/arm/boot/dts/qcom/qcom-msm8226.dtsi | 26 ++++++++++++++++++++++++++
>  1 file changed, 26 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/qcom/qcom-msm8226.dtsi b/arch/arm/boot/dts/qcom/qcom-msm8226.dtsi
> index f7f57c3f583557830c0a6dc9f0eebc2ddebbbe3c..5e82d871b81019d2f4f84d1228e8e9278ac44be3 100644
> --- a/arch/arm/boot/dts/qcom/qcom-msm8226.dtsi
> +++ b/arch/arm/boot/dts/qcom/qcom-msm8226.dtsi
> @@ -914,6 +914,18 @@ spmi_bus: spmi@...cf000 {
>  			#interrupt-cells = <4>;
>  		};
>  
> +		bam_dmux_dma: dma-controller@...34000 {
> +			compatible = "qcom,bam-v1.4.0";
> +			reg = <0xfc834000 0x7000>;
> +			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
> +			#dma-cells = <1>;
> +			qcom,ee = <0>;
> +
> +			num-channels = <6>;
> +			qcom,num-ees = <1>;
> +			qcom,powered-remotely;
> +		};
> +
>  		modem: remoteproc@...80000 {
>  			compatible = "qcom,msm8226-mss-pil";
>  			reg = <0xfc880000 0x100>,
> @@ -949,6 +961,20 @@ modem: remoteproc@...80000 {
>  
>  			status = "disabled";
>  
> +			bam_dmux: bam-dmux {
> +				compatible = "qcom,bam-dmux";
> +
> +				interrupt-parent = <&modem_smsm>;
> +				interrupts = <1 IRQ_TYPE_EDGE_BOTH>, <11 IRQ_TYPE_EDGE_BOTH>;
> +				interrupt-names = "pc", "pc-ack";
> +
> +				qcom,smem-states = <&apps_smsm 1>, <&apps_smsm 11>;
> +				qcom,smem-state-names = "pc", "pc-ack";
> +
> +				dmas = <&bam_dmux_dma 4>, <&bam_dmux_dma 5>;
> +				dma-names = "tx", "rx";
> +			};
> +
>  			smd-edge {
>  				interrupts = <GIC_SPI 25 IRQ_TYPE_EDGE_RISING>;
>  
> 
> -- 
> 2.48.1
>