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authorLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 14:06:21 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-20 14:06:21 -0700
commit7992893c5a9fdffa42117f6f749359466e06bdf6 (patch)
treef8b164faacaa001c5d9bfa5d752fd7d8f3dd2260 /Documentation
parent6eb59af580dcffc6f6982ac8ef6d27a1a5f26b27 (diff)
parent4a99fa06a8ca27a5187636e630568658000af575 (diff)
Merge tag 'for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply
Pull power supply and reset updates from Sebastian Reichel: - alternative reset driver for new at91 SoCs - misc fixes * tag 'for-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: sbs-battery: fix power status when battery charging near dry power: ipaq-micro-battery: freeing the wrong variable power/max8925: freeing wrong variable power: reset: at91-shdwc: add new shutdown controller driver ARM: dts: at91: shdwc binding: add new shutdown controller documentation
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/arm/atmel-at91.txt59
1 files changed, 59 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/arm/atmel-at91.txt b/Documentation/devicetree/bindings/arm/atmel-at91.txt
index 1d8004633479..e1f5ad855f14 100644
--- a/Documentation/devicetree/bindings/arm/atmel-at91.txt
+++ b/Documentation/devicetree/bindings/arm/atmel-at91.txt
@@ -151,6 +151,65 @@ Example:
clocks = <&clk32k>;
};
+SHDWC SAMA5D2-Compatible Shutdown Controller
+
+1) shdwc node
+
+required properties:
+- compatible: should be "atmel,sama5d2-shdwc".
+- reg: should contain registers location and length
+- clocks: phandle to input clock.
+- #address-cells: should be one. The cell is the wake-up input index.
+- #size-cells: should be zero.
+
+optional properties:
+
+- debounce-delay-us: minimum wake-up inputs debouncer period in
+ microseconds. It's usually a board-related property.
+- atmel,wakeup-rtc-timer: boolean to enable Real-Time Clock wake-up.
+
+The node contains child nodes for each wake-up input that the platform uses.
+
+2) input nodes
+
+Wake-up input nodes are usually described in the "board" part of the Device
+Tree. Note also that input 0 is linked to the wake-up pin and is frequently
+used.
+
+Required properties:
+- reg: should contain the wake-up input index [0 - 15].
+
+Optional properties:
+- atmel,wakeup-active-high: boolean, the corresponding wake-up input described
+ by the child, forces the wake-up of the core power supply on a high level.
+ The default is to be active low.
+
+Example:
+
+On the SoC side:
+ shdwc@f8048010 {
+ compatible = "atmel,sama5d2-shdwc";
+ reg = <0xf8048010 0x10>;
+ clocks = <&clk32k>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ atmel,wakeup-rtc-timer;
+ };
+
+On the board side:
+ shdwc@f8048010 {
+ debounce-delay-us = <976>;
+
+ input@0 {
+ reg = <0>;
+ };
+
+ input@1 {
+ reg = <1>;
+ atmel,wakeup-active-high;
+ };
+ };
+
Special Function Registers (SFR)
Special Function Registers (SFR) manage specific aspects of the integrated