[PATCH 1/2] ARM: dts: imx7ulp: add cm4 support

[Dong Aisheng]

Add cm4 remoteproc which supports rpmsg naming service with
two vdevs and two pairs of vrings. The vdevbuffer region is
not required.

Cc: Rob Herring <robh+dt at kernel.org>
Cc: Alessandro Zummo <a.zummo at towertech.it>
Cc: Alexandre Belloni <alexandre.belloni at bootlin.com>
Cc: Shawn Guo <shawnguo at kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong at nxp.com>
---
 arch/arm/boot/dts/imx7ulp-evk-m4.dtsi | 48 +++++++++++++++++++++++++++
 arch/arm/boot/dts/imx7ulp-evk.dts     |  1 +
 arch/arm/boot/dts/imx7ulp.dtsi        |  7 ++++
 3 files changed, 56 insertions(+)
 create mode 100644 arch/arm/boot/dts/imx7ulp-evk-m4.dtsi

diff --git a/arch/arm/boot/dts/imx7ulp-evk-m4.dtsi b/arch/arm/boot/dts/imx7ulp-evk-m4.dtsi
new file mode 100644
index 000000000000..abef0e6a2f25
--- /dev/null
+++ b/arch/arm/boot/dts/imx7ulp-evk-m4.dtsi
@@ -0,0 +1,48 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2021 NXP
+ *   Dong Aisheng <aisheng.dong at nxp.com>
+ */
+
+/ {
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		vdev0vring0: vdev0vring0 at 9ff00000 {
+			reg = <0x9ff00000 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1 at 9ff08000 {
+			reg = <0x9ff08000 0x8000>;
+			no-map;
+		};
+
+		vdev1vring0: vdev1vring0 at 9ff10000 {
+			reg = <0x9ff10000 0x8000>;
+			no-map;
+		};
+
+		vdev1vring1: vdev1vring1 at 9ff18000 {
+			reg = <0x9ff18000 0x8000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table at 1fff8000{
+			reg = <0x1fff8000 0x1000>;
+			no-map;
+		};
+	};
+
+	imx7ulp-cm4 {
+		compatible = "fsl,imx7ulp-cm4";
+		mbox-names = "tx", "rx", "rxdb";
+		mboxes = <&mu 0 1
+			  &mu 1 1
+			  &mu 3 1>;
+		memory-region = <&vdev0vring0>, <&vdev0vring1>,
+				<&vdev1vring0>, <&vdev1vring1>, <&rsc_table>;
+	};
+};
diff --git a/arch/arm/boot/dts/imx7ulp-evk.dts b/arch/arm/boot/dts/imx7ulp-evk.dts
index eff51e113db4..5d08bdad4c07 100644
--- a/arch/arm/boot/dts/imx7ulp-evk.dts
+++ b/arch/arm/boot/dts/imx7ulp-evk.dts
@@ -8,6 +8,7 @@
 /dts-v1/;
 
 #include "imx7ulp.dtsi"
+#include "imx7ulp-evk-m4.dtsi"
 
 / {
 	model = "NXP i.MX7ULP EVK";
diff --git a/arch/arm/boot/dts/imx7ulp.dtsi b/arch/arm/boot/dts/imx7ulp.dtsi
index a917b363da25..b4568eb49f2c 100644
--- a/arch/arm/boot/dts/imx7ulp.dtsi
+++ b/arch/arm/boot/dts/imx7ulp.dtsi
@@ -122,6 +122,13 @@ edma1: dma-controller at 40080000 {
 				 <&pcc2 IMX7ULP_CLK_DMA_MUX1>;
 		};
 
+		mu: mailbox at 40220000 {
+			compatible = "fsl,imx7ulp-mu";
+			reg = <0x40220000 0x1000>;
+			interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>;
+			#mbox-cells = <2>;
+		};
+
 		crypto: crypto at 40240000 {
 			compatible = "fsl,sec-v4.0";
 			#address-cells = <1>;
-- 
2.25.1