linux-kernel - [PATCH] ARM: dts: qcom: msm8974: Add BAM DMUX Ethernet/IP device

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Message-Id: <20220517203450.1155696-1-luca@z3ntu.xyz>
Date:   Tue, 17 May 2022 22:34:51 +0200
From:   Luca Weiss <luca@...tu.xyz>
To:     linux-arm-msm@...r.kernel.org
Cc:     ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org,
        Luca Weiss <luca@...tu.xyz>, Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] ARM: dts: qcom: msm8974: Add BAM DMUX Ethernet/IP device

BAM DMUX is used as the network interface to the modem.

Signed-off-by: Luca Weiss <luca@...tu.xyz>
---
 arch/arm/boot/dts/qcom-msm8974.dtsi | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm/boot/dts/qcom-msm8974.dtsi b/arch/arm/boot/dts/qcom-msm8974.dtsi
index 814ad0b46232..ffa6f874917a 100644
--- a/arch/arm/boot/dts/qcom-msm8974.dtsi
+++ b/arch/arm/boot/dts/qcom-msm8974.dtsi
@@ -1146,6 +1146,18 @@ 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;
+		};
+
 		remoteproc_mss: remoteproc@...80000 {
 			compatible = "qcom,msm8974-mss-pil";
 			reg = <0xfc880000 0x100>, <0xfc820000 0x020>;
@@ -1180,6 +1192,20 @@ mpss {
 				memory-region = <&mpss_region>;
 			};
 
+			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>;
 
-- 
2.36.0