[PATCH v5 5/9] watchdog: bindings: Provide ST bindings for ST's LPC Watchdog device
From: Lee Jones <hidden>
Date: 2015-03-04 18:08:57
Also in:
linux-devicetree, linux-watchdog, lkml
Subsystem:
open firmware and flattened device tree bindings, the rest, watchdog device drivers · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
On current ST platforms the LPC controls a number of functions including Watchdog and Real Time Clock. This patch provides the bindings used to configure LPC in Watchdog mode. Signed-off-by: Lee Jones <redacted> --- .../devicetree/bindings/watchdog/st_lpc_wdt.txt | 38 ++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 Documentation/devicetree/bindings/watchdog/st_lpc_wdt.txt
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 0000000..1bdf023
--- /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 at fde05000 { + compatible = "st,stih416-lpc-watchdog"; + 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; + };
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1.9.1