linux-kernel - [PATCH v3 3/4] dt-bindings: add rpi power domain driver bindings

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Date:	Tue, 15 Dec 2015 13:40:21 -0800
From:	Eric Anholt <eric@...olt.net>
To:	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	linux-arm-kernel@...ts.infradead.org,
	linux-rpi-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Stephen Warren <swarren@...dotorg.org>,
	Lee Jones <lee@...nel.org>,
	Florian Fainelli <f.fainelli@...il.com>,
	Kevin Hilman <khilman@...nel.org>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Alexander Aring <alex.aring@...il.com>,
	devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Eric Anholt <eric@...olt.net>
Subject: [PATCH v3 3/4] dt-bindings: add rpi power domain driver bindings

From: Alexander Aring <alex.aring@...il.com>

This patch adds devicetree tree bindings for the Raspberry Pi power
domain driver.

Signed-off-by: Alexander Aring <alex.aring@...il.com>
Acked-by: Rob Herring <robh@...nel.org>
Signed-off-by: Eric Anholt <eric@...olt.net>
---

v2: Add the new domains present in v2 to the list.

 .../bindings/arm/bcm/raspberrypi,bcm2835-power.txt | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-power.txt

diff --git a/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-power.txt b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-power.txt
new file mode 100644
index 0000000..30942cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/arm/bcm/raspberrypi,bcm2835-power.txt
@@ -0,0 +1,47 @@
+Raspberry Pi power domain driver
+
+Required properties:
+
+- compatible:		Should be "raspberrypi,bcm2835-power".
+- firmware:		Reference to the RPi firmware device node.
+- #power-domain-cells:	Should be <1>, we providing multiple power domains.
+
+The valid defines for power domain are:
+
+ RPI_POWER_DOMAIN_I2C0
+ RPI_POWER_DOMAIN_I2C1
+ RPI_POWER_DOMAIN_I2C2
+ RPI_POWER_DOMAIN_VIDEO_SCALER
+ RPI_POWER_DOMAIN_VPU1
+ RPI_POWER_DOMAIN_HDMI
+ RPI_POWER_DOMAIN_USB
+ RPI_POWER_DOMAIN_VEC
+ RPI_POWER_DOMAIN_JPEG
+ RPI_POWER_DOMAIN_H264
+ RPI_POWER_DOMAIN_V3D
+ RPI_POWER_DOMAIN_ISP
+ RPI_POWER_DOMAIN_UNICAM0
+ RPI_POWER_DOMAIN_UNICAM1
+ RPI_POWER_DOMAIN_CCP2RX
+ RPI_POWER_DOMAIN_CSI2
+ RPI_POWER_DOMAIN_CPI
+ RPI_POWER_DOMAIN_DSI0
+ RPI_POWER_DOMAIN_DSI1
+ RPI_POWER_DOMAIN_TRANSPOSER
+ RPI_POWER_DOMAIN_CCP2TX
+ RPI_POWER_DOMAIN_CDP
+ RPI_POWER_DOMAIN_ARM
+
+Example:
+
+power: power {
+	compatible = "raspberrypi,bcm2835-power";
+	firmware = <&firmware>;
+	#power-domain-cells = <1>;
+};
+
+Example for using power domain:
+
+&usb {
+       power-domains = <&power RPI_POWER_DOMAIN_USB>;
+};
-- 
2.6.2

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