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 e171390a1888238bf7e8c080523a3613bb637988..d66e31cf83fe63baaf168a9a37a47bf550c938da 100644 (file)
--- 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 = <