arm64: dts: ti: phycore-am64: Add R5F DMA Region and Mailboxes

Communication between the R5F subsystem and Linux takes place using DMA
memory regions and mailboxes. Here we add DT nodes for the memory
regions and mailboxes to facilitate communication between the R5
clusters and Linux as remoteproc will fail to start if no memory
regions or mailboxes are provided.

Fixes: c48ac0efe6d7 ("arm64: dts: ti: Add support for phyBOARD-Electra-AM642")
Signed-off-by: Garrett Giordano <ggiordano@phytec.com>
Reviewed-by: Wadim Egorov <w.egorov@phytec.de>
Link: https://lore.kernel.org/r/20231204212304.1736306-1-ggiordano@phytec.com
Signed-off-by: Nishanth Menon <nm@ti.com>

diff --git a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
index b8f844f667afca5cc7e42048a235bd931dc15e25..1678e74cb750e8c2eea612a6ddc37747fa225eb5 100644 (file)
--- a/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am64-phycore-som.dtsi
@@ -29,7 +29,7 @@
                reg = <0x00000000 0x80000000 0x00000000 0x80000000>;
        };
 
-       reserved-memory {
+       reserved_memory: reserved-memory {
                #address-cells = <2>;
                #size-cells = <2>;
                ranges;
@@ -39,6 +39,54 @@
                        alignment = <0x1000>;
                        no-map;
                };
+
+               main_r5fss0_core0_dma_memory_region: r5f-dma-memory@a0000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa0000000 0x00 0x100000>;
+                       no-map;
+               };
+
+               main_r5fss0_core0_memory_region: r5f-memory@a0100000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa0100000 0x00 0xf00000>;
+                       no-map;
+               };
+
+               main_r5fss0_core1_dma_memory_region: r5f-dma-memory@a1000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa1000000 0x00 0x100000>;
+                       no-map;
+               };
+
+               main_r5fss0_core1_memory_region: r5f-memory@a1100000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa1100000 0x00 0xf00000>;
+                       no-map;
+               };
+
+               main_r5fss1_core0_dma_memory_region: r5f-dma-memory@a2000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa2000000 0x00 0x100000>;
+                       no-map;
+               };
+
+               main_r5fss1_core0_memory_region: r5f-memory@a2100000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa2100000 0x00 0xf00000>;
+                       no-map;
+               };
+
+               main_r5fss1_core1_dma_memory_region: r5f-dma-memory@a3000000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa3000000 0x00 0x100000>;
+                       no-map;
+               };
+
+               main_r5fss1_core1_memory_region: r5f-memory@a3100000 {
+                       compatible = "shared-dma-pool";
+                       reg = <0x00 0xa3100000 0x00 0xf00000>;
+                       no-map;
+               };
        };
 
        leds {
@@ -166,6 +214,34 @@
        status = "disabled";
 };
 
+&mailbox0_cluster2 {
+       status = "okay";
+
+       mbox_main_r5fss0_core0: mbox-main-r5fss0-core0 {
+               ti,mbox-rx = <0 0 2>;
+               ti,mbox-tx = <1 0 2>;
+       };
+
+       mbox_main_r5fss0_core1: mbox-main-r5fss0-core1 {
+               ti,mbox-rx = <2 0 2>;
+               ti,mbox-tx = <3 0 2>;
+       };
+};
+
+&mailbox0_cluster4 {
+       status = "okay";
+
+       mbox_main_r5fss1_core0: mbox-main-r5fss1-core0 {
+               ti,mbox-rx = <0 0 2>;
+               ti,mbox-tx = <1 0 2>;
+       };
+
+       mbox_main_r5fss1_core1: mbox-main-r5fss1-core1 {
+               ti,mbox-rx = <2 0 2>;
+               ti,mbox-tx = <3 0 2>;
+       };
+};
+
 &main_i2c0 {
        status = "okay";
        pinctrl-names = "default";
@@ -191,6 +267,30 @@
        };
 };
 
+&main_r5fss0_core0 {
+       mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core0>;
+       memory-region = <&main_r5fss0_core0_dma_memory_region>,
+                       <&main_r5fss0_core0_memory_region>;
+};
+
+&main_r5fss0_core1 {
+       mboxes = <&mailbox0_cluster2 &mbox_main_r5fss0_core1>;
+       memory-region = <&main_r5fss0_core1_dma_memory_region>,
+                       <&main_r5fss0_core1_memory_region>;
+};
+
+&main_r5fss1_core0 {
+       mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core0>;
+       memory-region = <&main_r5fss1_core0_dma_memory_region>,
+                       <&main_r5fss1_core0_memory_region>;
+};
+
+&main_r5fss1_core1 {
+       mboxes = <&mailbox0_cluster4 &mbox_main_r5fss1_core1>;
+       memory-region = <&main_r5fss1_core1_dma_memory_region>,
+                       <&main_r5fss1_core1_memory_region>;
+};
+
 &ospi0 {
        status = "okay";
        pinctrl-names = "default";