From: Arnd Bergmann <arnd@arndb.de>
To: Y Vo <yvo@apm.com>
Cc: linux-arm-kernel@lists.infradead.org,
Linus Walleij <linus.walleij@linaro.org>,
linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
Tin Huynh <tnhuynh@apm.com>,
patches@apm.com, Toan Le <toanle@apm.com>, Phong Vo <pvo@apm.com>
Subject: Re: [PATCH v1 1/3] gpio: Add APM X-Gene standby GPIO controller driver
Date: Fri, 10 Oct 2014 09:26:46 +0200 [thread overview]
Message-ID: <2508938.qoNAztonL9@wuerfel> (raw)
In-Reply-To: <CAL4ahLeZsT4KN22Jgxa8EJD8eEcWwN-wddCFvXY+8Yvb5hCGFA@mail.gmail.com>
On Friday 10 October 2014 10:22:34 Y Vo wrote:
> APM: There are 6 GPIOs which can support IRQ, they are fixed to use
> external IRQ from XGIC. (The XGIC is based on the ARM Generic
> Interrupt Controller Architecture Specification, Architecture version
> 2.0, The XGIC provides the mechanism to collect interrupt requests
> (IRQs) from both on-chip as well as off-chip sources and deliver them
> to the multiple X-Gene1 cores within the X-Gene1 processor), So there
> are no way to read the GPIO DS when configure as an interrupt. They
> are specific GPIO for boot another boot chip in X-Gene which can
> access when boot up. So this is hardwire in the GPIO block.
> GPIO_DS8 ---> External IRQ0 (XGIC40)
> GPIO_DS9 ---> External IRQ1 (XGIC41)
> ...
> GPIO_DS13 ---> External IRQ5(XGIC45)
Could you read the status of the external IRQ line using irq_get_pending()
or another public interface?
If not, we may have to add an interface for doing this.
Arnd
next prev parent reply other threads:[~2014-10-10 7:26 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-08 14:52 [PATCH v1 0/3] gpio: Add APM X-Gene standy platform GPIO driver Y Vo
2014-10-08 14:52 ` [PATCH v1 2/3] Documentation: gpio: Add APM X-Gene standby GPIO controller DTS binding Y Vo
[not found] ` <1412779948-28769-1-git-send-email-yvo-qTEPVZfXA3Y@public.gmane.org>
2014-10-08 14:52 ` [PATCH v1 1/3] gpio: Add APM X-Gene standby GPIO controller driver Y Vo
2014-10-08 15:13 ` Arnd Bergmann
[not found] ` <CAL4ahLfpubEqi49gy8T9pyrf=1j__LbAsKUyr5i=koNyp0Mmig@mail.gmail.com>
2014-10-09 12:13 ` Arnd Bergmann
2014-10-10 3:22 ` Y Vo
2014-10-10 7:26 ` Arnd Bergmann [this message]
2014-10-24 12:14 ` Linus Walleij
2014-10-24 13:46 ` Arnd Bergmann
2014-10-29 9:52 ` Linus Walleij
2014-10-29 10:24 ` Arnd Bergmann
2014-10-29 15:09 ` Y Vo
2014-10-29 15:16 ` Arnd Bergmann
2014-12-16 9:43 ` Y Vo
2014-12-16 9:56 ` Arnd Bergmann
2014-10-08 14:52 ` [PATCH v1 3/3] arm64:dts: Add APM X-Gene standby GPIO controller DTS entries Y Vo
2014-10-09 9:42 ` [PATCH v1 0/3] gpio: Add APM X-Gene standy platform GPIO driver Mark Rutland
2014-10-09 11:53 ` Linus Walleij
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=2508938.qoNAztonL9@wuerfel \
--to=arnd@arndb.de \
--cc=devicetree@vger.kernel.org \
--cc=linus.walleij@linaro.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-gpio@vger.kernel.org \
--cc=patches@apm.com \
--cc=pvo@apm.com \
--cc=tnhuynh@apm.com \
--cc=toanle@apm.com \
--cc=yvo@apm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox