On Mon, Jan 13, 2020 at 3:58 AM 陈北宗 <[email protected]> wrote: > > Quick question: can I share an interrupt pin across several peripherals in > just device tree?
All the drivers must request the interrupt as shared. That's the only requirement. ChenYu > Background: I am trying to design a V3s board (for giggles,) but I have > exactly one interrupt-able pin left. I have several peripherals that may > generate interrupt, thankfully all as open drain outputs. So I wonder if I > can share that single interrupt line across them, or do I have to use some > kind of interrupt controller? (PCF8574 on I2C.) > > Where are the pins going: PG0-5 = Wi-Fi, PB0-3 = Bluetooth, PB4 = PWM for LED > backlight, PB6/7 = I2C, PB8/9 = debug UART. Only PB5 is available for > interrupts. > > -- > You received this message because you are subscribed to the Google Groups > "linux-sunxi" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web, visit > https://groups.google.com/d/msgid/linux-sunxi/57FCA1F7-81FE-4706-AF88-A36EA5E7307B%40gmail.com. -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web, visit https://groups.google.com/d/msgid/linux-sunxi/CAGb2v678Fvs54FFRB_%3DYB%3DU-VpOG44YyQOOeWUpKBtk09xNfuw%40mail.gmail.com.
