Hi all, On 5/1/24 2:41 PM, Judith Mendez wrote:
From: Nick Saulnier <nsaulnier@xxxxxx> A PRU system event "vring" has been added to each of the PRU nodes in the PRU-ICSS remote processor subsystem to enable the virtio/rpmsg communication between MPU and that PRU core. The additions are done in the base am33xx-l4.dtsi, and so are inherited by all the AM335x boards. Do note that PRUSS is available only on all AM3356+ 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, but currently there is no support on firmware-side for the SoC to use mailboxes. Either approach would require that an appropriate firmware image is loaded/booted on the PRU.
Please ignore this patch, Thanks, Judith
