arm: dts: k3-j7200-mcu: Add MCU domain R5F cluster node

The J7200 SoCs have 2 dual-core Arm Cortex-R5F processor (R5FSS)
subsystems/clusters. One R5F cluster is present within the MCU
domain (MCU_R5FSS0), and the other one is present within the MAIN
domain (MAIN_R5FSS0). Each of these can be configured at boot time
to be either run in a LockStep mode or in an Asymmetric Multi
Processing (AMP) fashion in Split-mode. These subsystems have 64 KB
each Tightly-Coupled Memory (TCM) internal memories for each core
split between two banks - ATCM and BTCM (further interleaved into
two banks). The TCMs of both Cores are combined in LockStep-mode
to provide a larger 128 KB of memory.

Add the DT node for the MCU domain R5F cluster/subsystem, the two
R5F cores are added as child nodes to the main cluster/subsystem node.
The cluster is configured to run in LockStep mode by default, with
the ATCMs enabled to allow the R5 cores to execute code from DDR with
boot-strapping code from ATCM. The inter-processor communication
between the main A72 cores and these processors is achieved through
shared memory and Mailboxes.

Signed-off-by: Suman Anna <s-anna@ti.com>

diff --git a/arch/arm/dts/k3-j7200-common-proc-board.dts b/arch/arm/dts/k3-j7200-common-proc-board.dts
index 3f1d03c..b485889 100644 (file)
--- a/arch/arm/dts/k3-j7200-common-proc-board.dts
+++ b/arch/arm/dts/k3-j7200-common-proc-board.dts
@@ -13,6 +13,11 @@
                stdout-path = "serial2:115200n8";
                bootargs = "console=ttyS2,115200n8 earlycon=ns16550a,mmio32,0x02800000";
        };
+
+       aliases {
+               remoteproc0 = &mcu_r5fss0_core0;
+               remoteproc1 = &mcu_r5fss0_core1;
+       };
 };
 
 &wkup_pmx0 {

diff --git a/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi b/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
index 4c899c8..75c0c85 100644 (file)
--- a/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
+++ b/arch/arm/dts/k3-j7200-mcu-wakeup.dtsi
@@ -269,4 +269,44 @@
                        ti,cpts-periodic-outputs = <2>;
                };
        };
+
+       mcu_r5fss0: r5fss@41000000 {
+               compatible = "ti,j7200-r5fss";
+               lockstep-mode = <1>;
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges = <0x41000000 0x00 0x41000000 0x20000>,
+                        <0x41400000 0x00 0x41400000 0x20000>;
+               power-domains = <&k3_pds 249 TI_SCI_PD_EXCLUSIVE>;
+
+               mcu_r5fss0_core0: r5f@41000000 {
+                       compatible = "ti,j7200-r5f";
+                       reg = <0x41000000 0x00010000>,
+                             <0x41010000 0x00010000>;
+                       reg-names = "atcm", "btcm";
+                       ti,sci = <&dmsc>;
+                       ti,sci-dev-id = <250>;
+                       ti,sci-proc-ids = <0x01 0xff>;
+                       resets = <&k3_reset 250 1>;
+                       firmware-name = "j7200-mcu-r5f0_0-fw";
+                       atcm-enable = <1>;
+                       btcm-enable = <1>;
+                       loczrama = <1>;
+               };
+
+               mcu_r5fss0_core1: r5f@41400000 {
+                       compatible = "ti,j7200-r5f";
+                       reg = <0x41400000 0x00008000>,
+                             <0x41410000 0x00008000>;
+                       reg-names = "atcm", "btcm";
+                       ti,sci = <&dmsc>;
+                       ti,sci-dev-id = <251>;
+                       ti,sci-proc-ids = <0x02 0xff>;
+                       resets = <&k3_reset 251 1>;
+                       firmware-name = "j7200-mcu-r5f0_1-fw";
+                       atcm-enable = <1>;
+                       btcm-enable = <1>;
+                       loczrama = <1>;
+               };
+       };
 };