linux-kernel - [RFC PATCH 1/4] arm64: dts: qcom: msm8998: Add blsp1 BAM

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Message-Id: <20191017221843.8130-2-jeffrey.l.hugo@gmail.com>
Date:   Thu, 17 Oct 2019 15:18:40 -0700
From:   Jeffrey Hugo <jeffrey.l.hugo@...il.com>
To:     agross@...nel.org, bjorn.andersson@...aro.org
Cc:     linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org,
        Jeffrey Hugo <jeffrey.l.hugo@...il.com>
Subject: [RFC PATCH 1/4] arm64: dts: qcom: msm8998: Add blsp1 BAM

The BAM in the blsp1 block can be used as a DMA engine to offload work
when managing any of the peripherals in the blsp.

Signed-off-by: Jeffrey Hugo <jeffrey.l.hugo@...il.com>
---
 arch/arm64/boot/dts/qcom/msm8998.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/msm8998.dtsi b/arch/arm64/boot/dts/qcom/msm8998.dtsi
index e42177952690..a3465f6bae84 100644
--- a/arch/arm64/boot/dts/qcom/msm8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi
@@ -1201,6 +1201,19 @@
 			status = "disabled";
 		};
 
+		blsp1_dma: dma@...4000 {
+			compatible = "qcom,bam-v1.7.0";
+			reg = <0x0c144000 0x25000>;
+			interrupts = <GIC_SPI 238 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&gcc GCC_BLSP1_AHB_CLK>;
+			clock-names = "bam_clk";
+			#dma-cells = <1>;
+			qcom,ee = <0>;
+			qcom,controlled-remotely;
+			num-channels = <18>;
+			qcom,num-ees = <4>;
+		};
+
 		blsp1_i2c1: i2c@...5000 {
 			compatible = "qcom,i2c-qup-v2.2.1";
 			reg = <0x0c175000 0x600>;
-- 
2.17.1