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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/Documentation/devicetree/bindings/watchdog
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/Documentation/devicetree/bindings/watchdog')
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt35
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt2
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/brcm,bcm7038-wdt.txt19
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt25
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/lpc18xx-wdt.txt19
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/omap-wdt.txt9
-rw-r--r--kernel/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt42
7 files changed, 147 insertions, 4 deletions
diff --git a/kernel/Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt
new file mode 100644
index 000000000..f7cc7c060
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/watchdog/atmel-sama5d4-wdt.txt
@@ -0,0 +1,35 @@
+* Atmel SAMA5D4 Watchdog Timer (WDT) Controller
+
+Required properties:
+- compatible: "atmel,sama5d4-wdt"
+- reg: base physical address and length of memory mapped region.
+
+Optional properties:
+- timeout-sec: watchdog timeout value (in seconds).
+- interrupts: interrupt number to the CPU.
+- atmel,watchdog-type: should be "hardware" or "software".
+ "hardware": enable watchdog fault reset. A watchdog fault triggers
+ watchdog reset.
+ "software": enable watchdog fault interrupt. A watchdog fault asserts
+ watchdog interrupt.
+- atmel,idle-halt: present if you want to stop the watchdog when the CPU is
+ in idle state.
+ CAUTION: This property should be used with care, it actually makes the
+ watchdog not counting when the CPU is in idle state, therefore the
+ watchdog reset time depends on mean CPU usage and will not reset at all
+ if the CPU stop working while it is in idle state, which is probably
+ not what you want.
+- atmel,dbg-halt: present if you want to stop the watchdog when the CPU is
+ in debug state.
+
+Example:
+ watchdog@fc068640 {
+ compatible = "atmel,sama5d4-wdt";
+ reg = <0xfc068640 0x10>;
+ interrupts = <4 IRQ_TYPE_LEVEL_HIGH 5>;
+ timeout-sec = <10>;
+ atmel,watchdog-type = "hardware";
+ atmel,dbg-halt;
+ atmel,idle-halt;
+ status = "okay";
+ };
diff --git a/kernel/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
index a4d869744..86fa6de10 100644
--- a/kernel/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
+++ b/kernel/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
@@ -6,6 +6,7 @@ Required properties:
- compatible: must be "atmel,at91sam9260-wdt".
- reg: physical base address of the controller and length of memory mapped
region.
+- clocks: phandle to input clock.
Optional properties:
- timeout-sec: contains the watchdog timeout in seconds.
@@ -39,6 +40,7 @@ Example:
compatible = "atmel,at91sam9260-wdt";
reg = <0xfffffd40 0x10>;
interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
+ clocks = <&clk32k>;
timeout-sec = <15>;
atmel,watchdog-type = "hardware";
atmel,reset-type = "all";
diff --git a/kernel/Documentation/devicetree/bindings/watchdog/brcm,bcm7038-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/brcm,bcm7038-wdt.txt
new file mode 100644
index 000000000..84122270b
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/watchdog/brcm,bcm7038-wdt.txt
@@ -0,0 +1,19 @@
+BCM7038 Watchdog timer
+
+Required properties:
+
+- compatible : should be "brcm,bcm7038-wdt"
+- reg : Specifies base physical address and size of the registers.
+
+Optional properties:
+
+- clocks: The clock running the watchdog. If no clock is found the
+ driver will default to 27000000 Hz.
+
+Example:
+
+watchdog@f040a7e8 {
+ compatible = "brcm,bcm7038-wdt";
+ clocks = <&upg_fixed>;
+ reg = <0xf040a7e8 0x16>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/digicolor-wdt.txt
new file mode 100644
index 000000000..a882967e1
--- /dev/null
+++ b/kernel/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/kernel/Documentation/devicetree/bindings/watchdog/lpc18xx-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/lpc18xx-wdt.txt
new file mode 100644
index 000000000..09f6b2496
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/watchdog/lpc18xx-wdt.txt
@@ -0,0 +1,19 @@
+* NXP LPC18xx Watchdog Timer (WDT)
+
+Required properties:
+- compatible: Should be "nxp,lpc1850-wwdt"
+- reg: Should contain WDT registers location and length
+- clocks: Must contain an entry for each entry in clock-names.
+- clock-names: Should contain "wdtclk" and "reg"; the watchdog counter
+ clock and register interface clock respectively.
+- interrupts: Should contain WDT interrupt
+
+Examples:
+
+watchdog@40080000 {
+ compatible = "nxp,lpc1850-wwdt";
+ reg = <0x40080000 0x24>;
+ clocks = <&cgu BASE_SAFE_CLK>, <&ccu1 CLK_CPU_WWDT>;
+ clock-names = "wdtclk", "reg";
+ interrupts = <49>;
+};
diff --git a/kernel/Documentation/devicetree/bindings/watchdog/omap-wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
index c22797067..1fa20e453 100644
--- a/kernel/Documentation/devicetree/bindings/watchdog/omap-wdt.txt
+++ b/kernel/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/kernel/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt b/kernel/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
new file mode 100644
index 000000000..039c5ca45
--- /dev/null
+++ b/kernel/Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
@@ -0,0 +1,42 @@
+STMicroelectronics Low Power Controller (LPC) - Watchdog
+========================================================
+
+LPC currently supports Watchdog OR Real Time Clock OR Clocksource
+functionality.
+
+[See: ../rtc/rtc-st-lpc.txt for RTC options]
+[See: ../timer/st,stih407-lpc for Clocksource 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 three modes:
+ ST_LPC_MODE_RTC [0]
+ ST_LPC_MODE_WDT [1]
+ ST_LPC_MODE_CLKSRC [2]
+ 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;
+ };