From: Peng Fan <peng.fan@nxp.com>
Date: Mon, 24 Jul 2023 07:58:30 +0000 (+0800)
Subject: arm64: dts: imx8ulp-evk: enable CM33 node
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=014fbffa25a7729864ed59b085a6b340e13df475;p=linux.git

arm64: dts: imx8ulp-evk: enable CM33 node

Enable CM33 node to support rpmsg feature. To use rpmsg, also need
to enable mu node for mailbox doorbell and reserved memory node
for vring, and data buffer. And reserved a piece DRAM memory for case
that m33 images loaded in DRAM.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
index e171390a18882..d66e31cf83fe6 100644
--- a/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8ulp-evk.dts
@@ -31,6 +31,42 @@
 			size = <0 0x28000000>;
 			linux,cma-default;
 		};
+
+		m33_reserved: noncacheable-section@a8600000 {
+			reg = <0 0xa8600000 0 0x1000000>;
+			no-map;
+		};
+
+		rsc_table: rsc-table@1fff8000{
+			reg = <0 0x1fff8000 0 0x1000>;
+			no-map;
+		};
+
+		vdev0vring0: vdev0vring0@aff00000 {
+			reg = <0 0xaff00000 0 0x8000>;
+			no-map;
+		};
+
+		vdev0vring1: vdev0vring1@aff08000 {
+			reg = <0 0xaff08000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring0: vdev1vring0@aff10000 {
+			reg = <0 0xaff10000 0 0x8000>;
+			no-map;
+		};
+
+		vdev1vring1: vdev1vring1@aff18000 {
+			reg = <0 0xaff18000 0 0x8000>;
+			no-map;
+		};
+
+		vdevbuffer: vdevbuffer@a8400000 {
+			compatible = "shared-dma-pool";
+			reg = <0 0xa8400000 0 0x100000>;
+			no-map;
+		};
 	};
 
 	clock_ext_rmii: clock-ext-rmii {
@@ -49,6 +85,16 @@
 	};
 };
 
+&cm33 {
+	mbox-names = "tx", "rx", "rxdb";
+	mboxes = <&mu 0 1>,
+		 <&mu 1 1>,
+		 <&mu 3 1>;
+	memory-region = <&vdevbuffer>, <&vdev0vring0>, <&vdev0vring1>,
+			<&vdev1vring0>, <&vdev1vring1>, <&rsc_table>;
+	status = "okay";
+};
+
 &lpuart5 {
 	/* console */
 	pinctrl-names = "default", "sleep";
@@ -92,6 +138,10 @@
 	};
 };
 
+&mu {
+	status = "okay";
+};
+
 &iomuxc1 {
 	pinctrl_enet: enetgrp {
 		fsl,pins = <