On 21/01/15 16:30, Tony Lindgren wrote: > * Marc Zyngier <marc.zyngier@xxxxxxx> [150119 01:48]: >> OMAP4/5 has been (ab)using the gic_arch_extn to provide >> wakeup from suspend, and it makes a lot of sense to convert >> this code to use stacked domains instead. >> >> This patch does just this, updating the DT files to actually >> reflect what the HW provides. >> >> BIG FAT WARNING: because the DTs were so far lying by not >> exposing the WUGEN HW block, kernels with this patch applied >> won't have any suspend-resume facility when booted with old DTs, >> and old kernels with updated DTs won't even boot. >> >> On a platform with this patch applied, the system looks like >> this: >> >> root@bacon-fat:~# cat /proc/interrupts >> CPU0 CPU1 >> 16: 0 0 WUGEN 37 gp_timer >> 19: 233799 155916 GIC 27 arch_timer >> 23: 0 0 WUGEN 9 l3-dbg-irq >> 24: 1 0 WUGEN 10 l3-app-irq >> 27: 282 0 WUGEN 13 omap-dma-engine >> 44: 0 0 4ae10000.gpio 13 DMA > > You may want to update this part for the fix :) Ah, yes. Thanks for noticing this. > I gave this a quick boot test on am437x-gp-evm and the > interrupts look OK with the fix also applied: > > # cat /proc/interrupts > CPU0 > 16: 657 WUGEN 68 gp_timer > 18: 0 WUGEN 9 l3-dbg-irq > 19: 0 WUGEN 10 l3-app-irq > 20: 5 WUGEN 12 edma > 22: 0 WUGEN 14 edma_error > 23: 96 WUGEN 72 OMAP UART0 > 33: 0 44e07000.gpio 6 mmc0 > 158: 52 WUGEN 70 44e0b000.i2c > 159: 0 WUGEN 71 4802a000.i2c > 160: 35 WUGEN 64 mmc0 > 161: 0 WUGEN 40 4a100000.ethernet > 162: 7739 WUGEN 41 4a100000.ethernet > 163: 7608 WUGEN 42 4a100000.ethernet > 164: 0 WUGEN 43 4a100000.ethernet > 170: 0 WUGEN 100 gpmc > 180: 0 WUGEN 7 tps65218 > IPI0: 0 CPU wakeup interrupts > IPI1: 0 Timer broadcast interrupts > IPI2: 0 Rescheduling interrupts > IPI3: 0 Function call interrupts > IPI4: 0 Single function call interrupts > IPI5: 0 CPU stop interrupts > IPI6: 0 IRQ work interrupts > IPI7: 0 completion interrupts > Err: 0 Interesting. No TWD timer on this one? > Also verified that suspend and resume to a serial console event > works on omap4430-sdp. So please feel free to add: > > Acked-by: Tony Lindgren <tony@xxxxxxxxxxx> Thanks, M. -- Jazz is not dead. It just smells funny... -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
