From: Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
To: Stephen Boyd <sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Linus Walleij
<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-msm-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Timur Tabi <timur-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Bjorn Andersson
<bjorn.andersson-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
linux-gpio-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Grant Likely
<grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v2 1/3] dt-bindings: pinctrl: Add a reserved-gpio-ranges property
Date: Fri, 26 Jan 2018 11:20:26 +0200 [thread overview]
Message-ID: <1516958426.7000.1272.camel@linux.intel.com> (raw)
In-Reply-To: <20180126011400.2191-2-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
On Thu, 2018-01-25 at 17:13 -0800, Stephen Boyd wrote:
> Some qcom platforms make some GPIOs or pins unavailable for use
> by non-secure operating systems, and thus reading or writing the
> registers for those pins will cause access control issues.
> Introduce a DT property to describe the set of GPIOs that are
> available for use so that higher level OSes are able to know what
> pins to avoid reading/writing.
> gpio-controller;
> #gpio-cells = <2>;
> ngpios = <18>;
> + reserved-gpio-ranges = <0 4>, <12 2>;
What about preserving namespace, i.e.
gpio-reserved-ranges vs. your variant?
--
Andy Shevchenko <andriy.shevchenko-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
Intel Finland Oy
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next prev parent reply other threads:[~2018-01-26 9:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-26 1:13 [PATCH v2 0/3] Support qcom pinctrl protected pins Stephen Boyd
2018-01-26 1:13 ` [PATCH v2 1/3] dt-bindings: pinctrl: Add a reserved-gpio-ranges property Stephen Boyd
[not found] ` <20180126011400.2191-2-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-01-26 9:20 ` Andy Shevchenko [this message]
2018-02-23 16:37 ` Bjorn Andersson
2018-03-20 3:36 ` Linus Walleij
2018-03-20 3:40 ` Timur Tabi
2018-03-20 21:35 ` Stephen Boyd
[not found] ` <20180126011400.2191-1-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-01-26 1:13 ` [PATCH v2 2/3] gpiolib-of: Support 'reserved-gpio-ranges' property Stephen Boyd
[not found] ` <20180126011400.2191-3-sboyd-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-01-26 9:35 ` Andy Shevchenko
2018-02-07 13:34 ` Linus Walleij
2018-03-01 21:49 ` Stephen Boyd
2018-01-26 1:14 ` [PATCH v2 3/3] pinctrl: qcom: Don't allow protected pins to be requested Stephen Boyd
2018-02-20 16:45 ` [PATCH v2 0/3] Support qcom pinctrl protected pins Timur Tabi
2018-02-23 14:22 ` Linus Walleij
2018-02-23 16:54 ` Bjorn Andersson
2018-02-26 21:18 ` Timur Tabi
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