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 MAIN 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 Split-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 | 2 ++ arch/arm/dts/k3-j7200-main.dtsi | 40 +++++++++++++++++++++ 2 files changed, 42 insertions(+)
diff --git a/arch/arm/dts/k3-j7200-common-proc-board.dts b/arch/arm/dts/k3-j7200-common-proc-board.dts index b48588952513..cc3d933cbb51 100644 --- a/arch/arm/dts/k3-j7200-common-proc-board.dts +++ b/arch/arm/dts/k3-j7200-common-proc-board.dts @@ -17,6 +17,8 @@ aliases { remoteproc0 = &mcu_r5fss0_core0; remoteproc1 = &mcu_r5fss0_core1; + remoteproc2 = &main_r5fss0_core0; + remoteproc3 = &main_r5fss0_core1; }; };
diff --git a/arch/arm/dts/k3-j7200-main.dtsi b/arch/arm/dts/k3-j7200-main.dtsi index aaa1fdd5a3ce..c25f03cf23d9 100644 --- a/arch/arm/dts/k3-j7200-main.dtsi +++ b/arch/arm/dts/k3-j7200-main.dtsi @@ -340,4 +340,44 @@ dr_mode = "otg"; }; }; + + main_r5fss0: r5fss@5c00000 { + compatible = "ti,j7200-r5fss"; + lockstep-mode = <0>; + #address-cells = <1>; + #size-cells = <1>; + ranges = <0x5c00000 0x00 0x5c00000 0x20000>, + <0x5d00000 0x00 0x5d00000 0x20000>; + power-domains = <&k3_pds 243 TI_SCI_PD_EXCLUSIVE>; + + main_r5fss0_core0: r5f@5c00000 { + compatible = "ti,j7200-r5f"; + reg = <0x5c00000 0x00010000>, + <0x5c10000 0x00010000>; + reg-names = "atcm", "btcm"; + ti,sci = <&dmsc>; + ti,sci-dev-id = <245>; + ti,sci-proc-ids = <0x06 0xFF>; + resets = <&k3_reset 245 1>; + firmware-name = "j7200-main-r5f0_0-fw"; + atcm-enable = <1>; + btcm-enable = <1>; + loczrama = <1>; + }; + + main_r5fss0_core1: r5f@5d00000 { + compatible = "ti,j7200-r5f"; + reg = <0x5d00000 0x00008000>, + <0x5d10000 0x00008000>; + reg-names = "atcm", "btcm"; + ti,sci = <&dmsc>; + ti,sci-dev-id = <246>; + ti,sci-proc-ids = <0x07 0xFF>; + resets = <&k3_reset 246 1>; + firmware-name = "j7200-main-r5f0_1-fw"; + atcm-enable = <1>; + btcm-enable = <1>; + loczrama = <1>; + }; + }; };