summaryrefslogtreecommitdiffstats
path: root/configs/platform-rpi/patches/linux-4.4/0013-dt-bindings-add-rpi-power-domain-driver-bindings.patch
blob: e8cab3a7b7a390a1ce99031d292084ae45f46675 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
From: Alexander Aring <alex.aring@gmail.com>
Date: Wed, 16 Dec 2015 16:26:48 -0800
Subject: [PATCH] dt-bindings: add rpi power domain driver bindings

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

Signed-off-by: Alexander Aring <alex.aring@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Alexander Aring <alex.aring@gmail.com>
---
 .../bindings/soc/bcm/raspberrypi,bcm2835-power.txt | 47 ++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt

diff --git a/Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt b/Documentation/devicetree/bindings/soc/bcm/raspberrypi,bcm2835-power.txt
new file mode 100644
index 000000000000..30942cf7992b
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/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>;
+};