linux-kernel - [PATCH 01/13] arm64: dts: qcom: msm8939: Add BAM-DMUX WWAN

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Message-Id: <20230926-msm8916-modem-v1-1-398eec74bac9@gerhold.net>
Date:   Tue, 26 Sep 2023 18:51:15 +0200
From:   Stephan Gerhold <stephan@...hold.net>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, phone-devel@...r.kernel.org,
        ~postmarketos/upstreaming@...ts.sr.ht,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Stephan Gerhold <stephan@...hold.net>,
        Vincent Knecht <vincent.knecht@...loo.org>
Subject: [PATCH 01/13] arm64: dts: qcom: msm8939: Add BAM-DMUX WWAN

From: Vincent Knecht <vincent.knecht@...loo.org>

BAM DMUX is used as the network interface to the modem. This is copied
as-is from msm8916.dtsi.

Signed-off-by: Vincent Knecht <vincent.knecht@...loo.org>
Signed-off-by: Stephan Gerhold <stephan@...hold.net>
---
 arch/arm64/boot/dts/qcom/msm8939.dtsi | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8939.dtsi b/arch/arm64/boot/dts/qcom/msm8939.dtsi
index 324b5d26db40..65c68e0e88d5 100644
--- a/arch/arm64/boot/dts/qcom/msm8939.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8939.dtsi
@@ -1537,6 +1537,20 @@ spmi_bus: spmi@...f000 {
 			#interrupt-cells = <4>;
 		};
 
+		bam_dmux_dma: dma-controller@...4000 {
+			compatible = "qcom,bam-v1.7.0";
+			reg = <0x04044000 0x19000>;
+			interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
+			#dma-cells = <1>;
+			qcom,ee = <0>;
+
+			num-channels = <6>;
+			qcom,num-ees = <1>;
+			qcom,powered-remotely;
+
+			status = "disabled";
+		};
+
 		mpss: remoteproc@...0000 {
 			compatible = "qcom,msm8916-mss-pil";
 			reg = <0x04080000 0x100>, <0x04020000 0x040>;
@@ -1569,6 +1583,22 @@ mpss: remoteproc@...0000 {
 			qcom,halt-regs = <&tcsr 0x18000 0x19000 0x1a000>;
 			status = "disabled";
 
+			bam_dmux: bam-dmux {
+				compatible = "qcom,bam-dmux";
+
+				interrupt-parent = <&hexagon_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";
+
+				status = "disabled";
+			};
+
 			mba {
 				memory-region = <&mba_mem>;
 			};

-- 
2.42.0