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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-09-08 01:01:14 -0300
commite5fd91f1ef340da553f7a79da9540c3db711c937 (patch)
treeb11842027dc6641da63f4bcc524f8678263304a3 /Documentation/devicetree/bindings/watchdog
parent2a9b0348e685a63d97486f6749622b61e9e3292f (diff)
Linux-libre 4.2-gnu
Diffstat (limited to 'Documentation/devicetree/bindings/watchdog')
-rw-r--r--Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt25
-rw-r--r--Documentation/devicetree/bindings/watchdog/omap-wdt.txt9
-rw-r--r--Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt38
3 files changed, 68 insertions, 4 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt b/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt
new file mode 100644
index 000000000..a882967e1
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt
@@ -0,0 +1,25 @@
+Conexant Digicolor SoCs Watchdog timer
+
+The watchdog functionality in Conexant Digicolor SoCs relies on the so called
+"Agent Communication" block. This block includes the eight programmable system
+timer counters. The first timer (called "Timer A") is the only one that can be
+used as watchdog.
+
+Required properties:
+
+- compatible : Should be "cnxt,cx92755-wdt"
+- reg : Specifies base physical address and size of the registers
+- clocks : phandle; specifies the clock that drives the timer
+
+Optional properties:
+
+- timeout-sec : Contains the watchdog timeout in seconds
+
+Example:
+
+ watchdog@f0000fc0 {
+ compatible = "cnxt,cx92755-wdt";
+ reg = <0xf0000fc0 0x8>;
+ clocks = <&main_clk>;
+ timeout-sec = <15>;
+ };
diff --git a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
index c22797067..1fa20e453 100644
--- a/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
@@ -1,10 +1,11 @@
TI Watchdog Timer (WDT) Controller for OMAP
Required properties:
-compatible:
-- "ti,omap3-wdt" for OMAP3
-- "ti,omap4-wdt" for OMAP4
-- ti,hwmods: Name of the hwmod associated to the WDT
+- compatible : "ti,omap3-wdt" for OMAP3 or "ti,omap4-wdt" for OMAP4
+- ti,hwmods : Name of the hwmod associated to the WDT
+
+Optional properties:
+- timeout-sec : default watchdog timeout in seconds
Examples:
diff --git a/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
new file mode 100644
index 000000000..388c88a01
--- /dev/null
+++ b/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
@@ -0,0 +1,38 @@
+STMicroelectronics Low Power Controller (LPC) - Watchdog
+========================================================
+
+LPC currently supports Watchdog OR Real Time Clock functionality.
+
+[See: ../rtc/rtc-st-lpc.txt for RTC options]
+
+Required properties
+
+- compatible : Must be one of: "st,stih407-lpc" "st,stih416-lpc"
+ "st,stih415-lpc" "st,stid127-lpc"
+- reg : LPC registers base address + size
+- interrupts : LPC interrupt line number and associated flags
+- clocks : Clock used by LPC device (See: ../clock/clock-bindings.txt)
+- st,lpc-mode : The LPC can run either one of two modes ST_LPC_MODE_RTC [0] or
+ ST_LPC_MODE_WDT [1]. One (and only one) mode must be
+ selected.
+
+Required properties [watchdog mode]
+
+- st,syscfg : Phandle to syscfg node used to enable watchdog and configure
+ CPU reset type.
+- timeout-sec : Watchdog timeout in seconds
+
+Optional properties [watchdog mode]
+
+- st,warm-reset : If present reset type will be 'warm' - if not it will be cold
+
+Example:
+ lpc@fde05000 {
+ compatible = "st,stih407-lpc";
+ reg = <0xfde05000 0x1000>;
+ clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
+ st,syscfg = <&syscfg_core>;
+ timeout-sec = <120>;
+ st,lpc-mode = <ST_LPC_MODE_WDT>;
+ st,warm-reset;
+ };