Commits
Suman Anna committed 109a512790f
ARM: dts: dra7: Add PRU system events for virtio Two PRU system events "vring" and "kick" have been added to each PRU node in each of the PRU-ICSS1 and PRU-ICSS2 remote processor subsystems to enable the virtio/rpmsg communication between MPU and that PRU core. The additions are done in the common base dra7.dtsi file, and so are inherited by all the AM57xx boards. Do note that PRUSS is not available/supported on the DRA7xx SoCs SoCs and is only limited to the AM57xx SoCs. The PRU system events is the preferred approach over using OMAP mailboxes, as it eliminates an external peripheral access from the PRU-side, and keeps the interrupt generation internal to the PRUSS. The difference from MPU would be minimal in using one versus the other. Mailboxes can still be used if desired. Either approach would require that an appropriate firmware image is loaded/booted on the PRU. Signed-off-by: Suman Anna <s-anna@ti.com>