linux-kernel - [PATCH v2 06/18] dt-bindings: Document the STM32 reset bindings

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Date:	Fri, 20 Feb 2015 19:01:05 +0100
From:	Maxime Coquelin <mcoquelin.stm32@...il.com>
To:	u.kleine-koenig@...gutronix.de, afaerber@...e.de,
	geert@...ux-m68k.org, Rob Herring <robh+dt@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Jonathan Corbet <corbet@....net>,
	Maxime Coquelin <mcoquelin.stm32@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>, Arnd Bergmann <arnd@...db.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"David S. Miller" <davem@...emloft.net>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	Joe Perches <joe@...ches.com>, Antti Palosaari <crope@....fi>,
	Tejun Heo <tj@...nel.org>, Will Deacon <will.deacon@....com>,
	Nikolay Borisov <Nikolay.Borisov@....com>,
	Rusty Russell <rusty@...tcorp.com.au>,
	Kees Cook <keescook@...omium.org>,
	Michal Marek <mmarek@...e.cz>, linux-doc@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-gpio@...r.kernel.org,
	linux-serial@...r.kernel.org, linux-arch@...r.kernel.org,
	linux-api@...r.kernel.org
Subject: [PATCH v2 06/18] dt-bindings: Document the STM32 reset bindings

This adds documentation of device tree bindings for the
STM32 reset controller.

Signed-off-by: Maxime Coquelin <mcoquelin.stm32@...il.com>

Signed-off-by: Maxime Coquelin <mcoquelin.stm32@...il.com>
---
 .../devicetree/bindings/reset/st,stm32-reset.txt   | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/reset/st,stm32-reset.txt

diff --git a/Documentation/devicetree/bindings/reset/st,stm32-reset.txt b/Documentation/devicetree/bindings/reset/st,stm32-reset.txt
new file mode 100644
index 0000000..5982528
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/st,stm32-reset.txt
@@ -0,0 +1,36 @@
+STMicroelectronics STM32 Peripheral Reset Controller
+====================================================
+
+Please also refer to reset.txt in this directory for common reset
+controller binding usage.
+
+Required properties:
+- compatible: Should be "st,stm32-reset"
+- reg: should be register base and length as documented in the
+  datasheet
+- #reset-cells: 1, see below
+
+example:
+
+reset_ahb1: reset@...23810 {
+	#reset-cells = <1>;
+	compatible = "st,stm32-reset";
+	reg = <0x40023810 0x4>;
+};
+
+Specifying softreset control of devices
+=======================================
+
+Device nodes should specify the reset channel required in their "resets"
+property, containing a phandle to the reset device node and an index specifying
+which channel to use, as described in reset.txt
+
+example:
+
+	timer2 {
+		resets			= <&resets TIM2_RESET>;
+	};
+
+Macro definitions for the supported reset channels can be found in:
+
+include/dt-bindings/reset/st,stm32f429.h
-- 
1.9.1

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