From 261cbf8163cf9df8020d995b89f427b951d77897 Mon Sep 17 00:00:00 2001 From: Hari Nagalla Date: Tue, 8 Feb 2022 11:39:59 -0600 Subject: [PATCH] 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 --- arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi | 40 ++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) diff --git a/arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi b/arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi index 569db20f35..3d214d76d4 100644 --- a/arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi +++ b/arch/arm/dts/k3-j721s2-mcu-wakeup.dtsi @@ -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>; + }; + }; };