From: marc.zyngier@arm•com (Marc Zyngier)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v4 13/21] ARM: omap: convert wakeupgen to stacked domains
Date: Wed, 21 Jan 2015 17:22:38 +0000 [thread overview]
Message-ID: <54BFE05E.9080403@arm.com> (raw)
In-Reply-To: <20150121163031.GR7718@atomide.com>
On 21/01/15 16:30, Tony Lindgren wrote:
> * Marc Zyngier <marc.zyngier@arm•com> [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 at 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@atomide•com>
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2015-01-21 17:22 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-19 9:43 [PATCH v4 00/21] irqchip: gic: killing gic_arch_extn and co, slowly Marc Zyngier
2015-01-19 9:43 ` [PATCH v4 01/21] ARM: tegra: irq: nuke leftovers from non-DT support Marc Zyngier
2015-01-19 9:43 ` [PATCH v4 02/21] irqchip: tegra: add DT-based support for legacy interrupt controller Marc Zyngier
2015-01-20 7:51 ` Peter De Schrijver
2015-01-19 9:43 ` [PATCH v4 03/21] ARM: tegra: skip gic_arch_extn setup if DT has a LIC node Marc Zyngier
2015-01-19 9:43 ` [PATCH v4 04/21] ARM: tegra: update DTs to expose legacy interrupt controller Marc Zyngier
2015-01-19 9:43 ` [PATCH v4 05/21] DT: tegra: add binding for the " Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 06/21] ARM: tegra: remove old LIC support Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 07/21] genirq: Add irqchip_set_wake_parent Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 08/21] irqchip: crossbar: convert dra7 crossbar to stacked domains Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 09/21] DT: update ti,irq-crossbar binding Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 10/21] irqchip: GIC: get rid of routable domain Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 11/21] DT: arm,gic: kill arm,routable-irqs Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 12/21] DT: omap4/5: add binding for the wake-up generator Marc Zyngier
2015-01-21 16:26 ` Tony Lindgren
2015-01-19 9:44 ` [PATCH v4 13/21] ARM: omap: convert wakeupgen to stacked domains Marc Zyngier
2015-01-21 16:30 ` Tony Lindgren
2015-01-21 17:22 ` Marc Zyngier [this message]
2015-01-21 18:36 ` Tony Lindgren
2015-01-21 20:12 ` santosh shilimkar
2015-01-21 20:43 ` Tony Lindgren
2015-01-21 21:28 ` santosh shilimkar
2015-01-21 21:37 ` Tony Lindgren
2015-01-19 9:44 ` [PATCH v4 14/21] ARM: imx6: convert GPC " Marc Zyngier
2015-01-19 10:47 ` Lucas Stach
2015-01-19 11:12 ` Marc Zyngier
2015-01-20 11:19 ` Shawn Guo
2015-01-19 9:44 ` [PATCH v4 15/21] ARM: exynos4/5: convert pmu wakeup " Marc Zyngier
2015-01-20 7:42 ` Pankaj Dubey
2015-01-20 9:43 ` Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 16/21] DT: exynos: update PMU binding Marc Zyngier
2015-01-20 7:47 ` Pankaj Dubey
2015-01-19 9:44 ` [PATCH v4 17/21] irqchip: gic: add an entry point to set up irqchip flags Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 18/21] ARM: shmobile: remove use of gic_arch_extn.irq_set_wake Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 19/21] ARM: ux500: switch from gic_arch_extn to gic_set_irqchip_flags Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 20/21] ARM: zynq: " Marc Zyngier
2015-01-19 9:44 ` [PATCH v4 21/21] irqchip: gic: Drop support for gic_arch_extn Marc Zyngier
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