linux-kernel - [PATCH 1/2] dt-bindings: rtc: new binding for Amlogic VRTC

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Message-Id: <20190607194343.18359-1-khilman@kernel.org>
Date:   Fri,  7 Jun 2019 12:43:42 -0700
From:   Kevin Hilman <khilman@...nel.org>
To:     linux-rtc@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     linux-amlogic@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Kevin Hilman <khilman@...libre.com>
Subject: [PATCH 1/2] dt-bindings: rtc: new binding for Amlogic VRTC

From: Kevin Hilman <khilman@...libre.com>

Add binding fo the new VRTC driver for Amlogic SoCs.  The 64-bit
family of SoCs only has an RTC managed by firmware, and this VRTC
driver provides the simple, one-register firmware interface.

Signed-off-by: Kevin Hilman <khilman@...libre.com>
---
 .../devicetree/bindings/rtc/rtc-meson-vrtc.txt   | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt b/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt
new file mode 100644
index 000000000000..f02886179788
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-meson-vrtc.txt
@@ -0,0 +1,16 @@
+* Amlogic Virtual RTC (VRTC)
+
+This is a Linux interface to an RTC managed by firmware, hence it's
+virtual from a Linux perspective.  The interface is 1 register where
+an alarm time is to be written.
+
+Required properties:
+- compatible: should be "amlogic,meson-vrtc"
+- reg: physical address for the alarm register
+
+Example:
+
+	vrtc: rtc@0a8 {
+		compatible = "amlogic,meson-vrtc";
+		reg = <0x0 0x000a8 0x0 0x4>;
+	};
-- 
2.21.0