linux-kernel - Re: [PATCH v3 2/4] dt-bindings: brcmstb-gpio: document properties for wakeup

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Mon, 13 Jul 2015 10:35:57 -0700
From:	Florian Fainelli <fainelli@...adcom.com>
To:	Linus Walleij <linus.walleij@...aro.org>,
	Gregory Fong <gregory.0xf0@...il.com>,
	Grant Likely <grant.likely@...aro.org>,
	"Bjorn Helgaas" <bhelgaas@...gle.com>,
	Rob Herring <robh+dt@...nel.org>
CC:	"linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
	"Alexandre Courbot" <gnurou@...il.com>,
	bcm-kernel-feedback-list <bcm-kernel-feedback-list@...adcom.com>,
	Brian Norris <computersforpeace@...il.com>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	"Ian Campbell" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Mark Rutland <mark.rutland@....com>,
	"Pawel Moll" <pawel.moll@....com>,
	Russell King <linux@....linux.org.uk>
Subject: Re: [PATCH v3 2/4] dt-bindings: brcmstb-gpio: document properties
 for wakeup

On 13/07/15 05:29, Linus Walleij wrote:
> On Thu, Jun 18, 2015 at 3:00 AM, Gregory Fong <gregory.0xf0@...il.com> wrote:
> 
>> Some brcmstb GPIO controllers can be used to wake from suspend, so use
>> the de facto standard property 'wakeup-source' to mark the nodes of
>> controllers with that capability.
>>
>> Also document interrupts-extended, which will be used for wakeup
>> handling because the interrupt parent for the wake IRQ is different
>> from the regular IRQ.
>>
>> While we're at it, a few more fixes: We don't actually use the
>> "interrupt-names" property, so remove it from the listed optional
>> properties and from the examples.  And since we're modifying the
>> examples, also follow Brian's suggestions to:
>> - change #gpio-cells, #interrupt-cells, and brcm,gpio-bank-widths from
>>   hex to dec
>> - use phandles
>>
>> Reviewed-by: Brian Norris <computersforpeace@...il.com>
>> Signed-off-by: Gregory Fong <gregory.0xf0@...il.com>
>> ---
>> v3: Update per Brian's suggestions described in above message.
> 
> I'm very uncertain regarding these interrupts-extended etc.

Gregory's additions to the binding are correct and comply with how the
'interrupts-extended' property is meant to be used. FYI, this is
required because most wake-up capable HW on brcmstb chips have N
interrupts feeding to a GIC, but their wake-up interrupt(s) feed to an
always-on interrupt controller. With the 'interrupts' +
'interrupt-parent' property, you can "cross" multiple interrupt domains.

The precedence and rules for interpreting the "legacy" interrupts
property vs. interrupts-extended is documented in the tree.

> 
> Can someone who understands that ACK this?

Acked-by: Florian Fainelli <f.fainelli@...il.com>

> 
> E.g. Grant Likely, Björn Helgaas, Rob Herring.
> 
> Yours,
> Linus Walleij
> 


-- 
Florian
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/