ARM64: Enable SP805 WDT support for FSL LS2080A
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Cover letter [PATCH v4 0/2] ARM64: Enable SP805 WDT support for FSL LS2080A
Quoted 52 lines · Bhupesh Sharma
Hi Mark,
Sorry for the delayed reply. I was on holidays.
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From: Marc Zyngier [mailto:marc.zyngier at arm.com]
Sent: Thursday, April 14, 2016 9:19 PMHi Bhupesh,
Quoted 3 lines · Bhupesh Sharma
Hi Arnd, Kevin, Olof
This is the v4 of patchset which adds the support for SP805 WDT on
FSL
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LS2080A and also adds the missing documentation of SP805 WDT device-
tree bindings.
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Rebased against arm-soc/next/dt
Changes since v3:
(v3 can be viewed here:
https://www.mail-archive.com/devicetree at vger.kernel.org/msg97249.html)
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- Added Rob's Acked-by for patch 1/2.
- Sending to 'arm at kernel.org' list and also cc'ed Shawn GuoChanges since v2:
(v2 can be viewed here:
http://permalink.gmane.org/gmane.linux.ports.arm.kernel/463141)
- Addressed Rob's comments regarding the second mandatory CLKsource's
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(WDOGCLK) name in the bindings.
Changes since v1:
(v1 can be viewed here:
http://www.spinics.net/lists/devicetree/msg102487.html)- Addressed Rob and Mark's comments regarding the mandatory CLK sources
- Removed interrupt property from the bindings for now (as discussed with Mark on IRC) till Will's patch proceeds further and enables handling the WDOG interrupts for each core connected to the samePPI
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line
(http://lists.infradead.org/pipermail/linux-arm-kernel/2015-December/3
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91616.html)
Will just pointed me to this series. I've recently posted a set of patches that should be able to deal with the quirkiness of your HW with regards to PPIs:
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http://thread.gmane.org/gmane.linux.drivers.devicetree/163464
Could you please let me know if this works for you?
Sure. I will have a look at the patchset and get back asap.
Thanks. It should be pretty easy to do (define all 8 affinities for your CPUs, and assign each one to the watchdog it corresponds to).
Of course, the watchdog driver itself is missing interrupt support, so you will have to hack that as well. If you have any issue with this stuff, please give me a shout.
Cheers,
M.
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