On Wed, Aug 1, 2018 at 2:28 PM, A.s. Dong <aisheng.dong@xxxxxxx> wrote: > Hi Jassi, > >> > + The doorbell channels should be used with shared memory and >> protocol >> > + level acknowledgment if needed. >> > + >> I would avoid this. People might get notions that they have to use shmem >> with doorbell -- a trivial protocol might mean doing some fixed action (like >> reset) whenever the doorbell rings. >> > > That's right. > i.MX8 using the general purpose interrupt for peripherals. No shmem needed. > e.g. RTC, Watchdog and ON/OFF interrupt. > > BTW, this means the peripheral will use mailbox doorbell channels to handle > Interrupts. Is there such user case in kernel we can refer to? > I don't find any publicly in kernel. It should be simple though. Acquire the RX channel, and populate the rx_callback() with the "interrupt" handler. -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
