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 --- arch/arm/dts/k3-j7200-common-proc-board.dts | 5 +++ arch/arm/dts/k3-j7200-mcu-wakeup.dtsi | 40 +++++++++++++++++++++ 2 files changed, 45 insertions(+)
diff --git a/arch/arm/dts/k3-j7200-common-proc-board.dts b/arch/arm/dts/k3-j7200-common-proc-board.dts index 3f1d03c96037..b48588952513 100644 --- 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 4c899c8aca5d..75c0c8597dc9 100644 --- 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>; + }; + }; };