rtc: pcf8563: add CLKOUT to common clock framework

Add the clkout output clk to the common clock framework.
Disable the CLKOUT of the RTC after power-up.
After power-up/reset of the RTC, CLKOUT is enabled by default,
with CLKOUT enabled the RTC chip has 2-3 times higher power
consumption.

Signed-off-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/rtc/pcf8563.txt b/Documentation/devicetree/bindings/rtc/pcf8563.txt
new file mode 100644
index 000000000000..72f6d2c9665e
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/pcf8563.txt
@@ -0,0 +1,25 @@
+* Philips PCF8563/Epson RTC8564 Real Time Clock
+
+Philips PCF8563/Epson RTC8564 Real Time Clock
+
+Required properties:
+see: Documentation/devicetree/bindings/i2c/trivial-devices.txt
+
+Optional property:
+- #clock-cells: Should be 0.
+- clock-output-names:
+  overwrite the default clock name "pcf8563-clkout"
+
+Example:
+
+pcf8563: pcf8563@51 {
+	compatible = "nxp,pcf8563";
+	reg = <0x51>;
+	#clock-cells = <0>;
+};
+
+device {
+...
+	clocks = <&pcf8563>;
+...
+};