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authorLee Jones <lee.jones@linaro.org>2015-04-09 15:47:32 +0100
committerLee Jones <lee.jones@linaro.org>2015-04-30 13:21:29 +0100
commit5cb69745da35c372b3db001efbd3967b633ba0d1 (patch)
tree27d3102811b55ea254e2a70be27eec6863c9aa72 /Documentation/devicetree/bindings/rtc
parent49ae77905c56da6d73e8d4a73aa030718a096551 (diff)
rtc: bindings: Provide ST bindings for ST's LPC RTC device
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 RTC mode. Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'Documentation/devicetree/bindings/rtc')
-rw-r--r--Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt25
1 files changed, 25 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt b/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt
new file mode 100644
index 000000000000..73407f502e4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-st-lpc.txt
@@ -0,0 +1,25 @@
+STMicroelectronics Low Power Controller (LPC) - RTC
+===================================================
+
+LPC currently supports Watchdog OR Real Time Clock functionality.
+
+[See: ../watchdog/st_lpc_wdt.txt for Watchdog 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.
+
+Example:
+ lpc@fde05000 {
+ compatible = "st,stih407-lpc";
+ reg = <0xfde05000 0x1000>;
+ clocks = <&clk_s_d3_flexgen CLK_LPC_0>;
+ st,lpc-mode = <ST_LPC_MODE_RTC>;
+ };