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:	Thu, 24 Jul 2014 10:21:27 -0400
From:	Santosh Shilimkar <>
To:	Linus Walleij <>
CC:	Grygorii Strashko <>,
	Suman Anna <>,
	Jaswinder Singh <>,
	Alexander Shiyan <>,
	Alexandre Courbot <>,
	"" <>,
	Muralidharan Karicheri <>,
	Rob Herring <>,
	Kumar Gala <>,
	"" <>,
	"" <>
Subject: Re: [PATCH v1] gpio: keystone: add dsp gpio controller driver

On Thursday 24 July 2014 10:12 AM, Linus Walleij wrote:
> On Wed, Jul 23, 2014 at 5:25 PM, Santosh Shilimkar
> <> wrote:
>> I will try to answer this. This IP is indeed a GPIO block
>> but the IO's are used just OUTPUT lines from Linux
>> HOST perspective. These IOs are connected to the DSPs
>> as input/IRQ lines.
> So the DSP is another discrete IC, and could be something
> different, so this is board-level information?
> I'm really worrying whether this is general purpose or not :-/
Am not sure I follow you. This IP is completely controlled
by Linux OS to generate output signals. How does it matter
whether its connected to a peripheral or a discrete IC. For
example instead of DSP if I connected these lines to an
external PMIC, which considers these as input lines to
perform some actions. Isn't that GPIO usecase as per you ?
Given that this IP only output functionality is used but
that shouldn't matter. We have seen SOCs where GPIOs
are just used as input to form a Matrix Keyboard.

May be I am missing your point.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists