Commits
Suman Anna committed 2672193a0c1
ARM: dts: keystone-k2g: Add the PRU-ICSS nodes Add the DT nodes for the PRU-ICSS0 and PRU-ICSS1 processor subsystems that are present on the 66AK2G SoC. The two PRU-ICSSs are identical to each other. Each PRU-ICSS instance is represented by a pruss-soc-bus node and a child PRUSS subsystem node. These nodes are enabled by default. The PRU-ICSSs on 66AK2G are very similar to the PRUSS on the AM57xx SoCs except for larger Shared Data RAM and the lack of a PRU-ICSS crossbar. There are also few other minor integration differences w.r.t IPC mechansims that can be attributed to the architecture differences between Keystone and OMAP families. The PRUSS subsystem node contains the entire address space and the various interrupts generated towards the main MPU. The various sub-modules of the PRU-ICSS are represented as individual child nodes (so platform devices themselves) of the PRUSS subsystem node. These include the two PRU cores and the interrupt controller. The Industrial Ethernet Peripheral (IEP), the Real Time Media Independent Interface controller (MII_RT), and the CFG sub-module are represented as syscon nodes. All the Data RAMs are represented within a child node of its own named 'memories' without any compatible. The DT nodes use all standard properties. The regs property in the PRU nodes define the addresses for the Instruction RAM, the Debug and Control sub-modules for that PRU core. The firmware for each PRU core is defined through a 'firmware-name' property. The default names for the firmware images for each PRU core are defined as follows (these can be adjusted either in derivative board dts files or through sysfs at runtime if required): PRU-ICSS0 PRU0 Core: k2g-pru0_0-fw PRU-ICSS0 PRU1 Core: k2g-pru0_1-fw PRU-ICSS1 PRU0 Core: k2g-pru1_0-fw PRU-ICSS1 PRU1 Core: k2g-pru1_1-fw Signed-off-by: Suman Anna <s-anna@ti.com>