From 5491ab29e111ab3cf220a01ebce19a2957e04418 Mon Sep 17 00:00:00 2001 From: Dom Cobley Date: Fri, 7 Jul 2023 20:16:06 +0100 Subject: [PATCH] dt-bindings: rtc: new binding for Raspberry Pi RTC driver Add binding for the new RTC driver for Raspberry Pi. This platform has an RTC managed by firmware, and this RTC driver provides the simple mailbox interface to access it. Signed-off-by: Dom Cobley --- Documentation/devicetree/bindings/rtc/rtc-rpi.txt | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 Documentation/devicetree/bindings/rtc/rtc-rpi.txt diff --git a/Documentation/devicetree/bindings/rtc/rtc-rpi.txt b/Documentation/devicetree/bindings/rtc/rtc-rpi.txt new file mode 100644 index 0000000..bbbc28b --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc-rpi.txt @@ -0,0 +1,17 @@ +* Raspberry Pi RTC + +This is a Linux interface to an RTC managed by firmware, hence it's +virtual from a Linux perspective. + +The interface uses the firmware mailbox api to access the RTC registers. + +Required properties: +compatible: should be "raspberrypi,rpi-rtc" +firmware: Reference to the RPi firmware device node. + +Example: + + rpi_rtc: rpi_rtc { + compatible = "raspberrypi,rpi-rtc"; + firmware = <&firmware>; + }; -- 2.7.4