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arm: dts: k3-j721s2-mcu: Add MAIN domain R5F cluster node 

The J721S2 SoCs have 3 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_R5FSS0/1). 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/subsystems, the two
R5F cores are added as child nodes to a main cluster/subsystem node.
The clusters are 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: Hari Nagalla <hnagalla@ti.com>
This commit is contained in:
Hari Nagalla 2022-02-08 11:39:59 -06:00 committed by Praneeth Bajjuri
parent 2e779c3111
commit 261cbf8163
1 changed files with 40 additions and 0 deletions
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40
arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi
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@ -339,4 +339,44 @@
};
};
mcu_r5fss0: r5fss@41000000 {
compatible = "ti,j721s2-r5fss";
ti,cluster-mode = <1>;
#address-cells = <1>;
#size-cells = <1>;
ranges = <0x41000000 0x00 0x41000000 0x20000>,
<0x41400000 0x00 0x41400000 0x20000>;
power-domains = <&k3_pds 283 TI_SCI_PD_EXCLUSIVE>;
mcu_r5fss0_core0: r5f@41000000 {
compatible = "ti,j721s2-r5f";
reg = <0x41000000 0x00010000>,
<0x41010000 0x00010000>;
reg-names = "atcm", "btcm";
ti,sci = <&sms>;
ti,sci-dev-id = <284>;
ti,sci-proc-ids = <0x01 0xff>;
resets = <&k3_reset 284 1>;
firmware-name = "j7-mcu-r5f0_0-fw";
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
};
mcu_r5fss0_core1: r5f@41400000 {
compatible = "ti,j721s2-r5f";
reg = <0x41400000 0x00010000>,
<0x41410000 0x00010000>;
reg-names = "atcm", "btcm";
ti,sci = <&sms>;
ti,sci-dev-id = <285>;
ti,sci-proc-ids = <0x02 0xff>;
resets = <&k3_reset 285 1>;
firmware-name = "j7-mcu-r5f0_1-fw";
ti,atcm-enable = <1>;
ti,btcm-enable = <1>;
ti,loczrama = <1>;
};
};
};