Some products may not support MC146818 RTC CMOS device. Introduce a optional
'status' standard property for RTC-CMOS to indicate if the MC146818 RTC device
is available (status="okay") or not (status="disabled")
Signed-off-by: Rahul Tanwar <rahul.tanwar@xxxxxxxxxxxxxxx>
---
Documentation/devicetree/bindings/rtc/rtc-cmos.txt | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/rtc/rtc-cmos.txt b/Documentation/devicetree/bindings/rtc/rtc-cmos.txt
index b94b35f3600b..fea4fe0ed4b9 100644
--- a/Documentation/devicetree/bindings/rtc/rtc-cmos.txt
+++ b/Documentation/devicetree/bindings/rtc/rtc-cmos.txt
@@ -11,6 +11,9 @@ Optional properties:
called "Register B".
- freq-reg : Contains the initial value of the frequency register also
called "Regsiter A".
+ - status: indicates the operational status of the device.
+ Value must be either "disabled" or "okay".
+
"Register A" and "B" are usually initialized by the firmware (BIOS for
instance). If this is not done, it can be performed by the driver.
@@ -24,4 +27,5 @@ ISA Example:
ctrl-reg = <2>;
freq-reg = <0x26>;
reg = <1 0x70 2>;
+ status = "okay";
};
--
2.11.0
