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From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
To: linux-amlogic@lists.infradead.org, linux-rtc@vger.kernel.org,
	alexandre.belloni@bootlin.com, a.zummo@towertech.it
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>,
	ben.dooks@codethink.co.uk, linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org, ccaione@baylibre.com
Subject: [PATCH v6 1/2] dt-bindings: rtc: add device-tree bindings for the Amlogic Meson RTC
Date: Sat, 19 Jan 2019 15:43:31 +0100
Message-ID: <20190119144332.11984-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20190119144332.11984-1-martin.blumenstingl@googlemail.com>

The 32-bit Amlogic Meson SoCs (Meson6, Meson8, Meson8b and Meson8m2)
have a built-in RTC block.
It has the following inputs:
- an 32.768kHz crystal oscillator
- an interrupt line
- a reset line
- 0.9V voltage input

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
[resurrected patches from Ben after 2 years]
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
---
 .../devicetree/bindings/rtc/rtc-meson.txt     | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/rtc-meson.txt

diff --git a/Documentation/devicetree/bindings/rtc/rtc-meson.txt b/Documentation/devicetree/bindings/rtc/rtc-meson.txt
new file mode 100644
index 000000000000..23df3cf2dd73
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-meson.txt
@@ -0,0 +1,32 @@
+* Amlogic Meson6, Meson8, Meson8b and Meson8m2 RTC
+
+Required properties:
+- compatible: should be one of the following describing the hardware:
+	* "amlogic,meson6-rtc"
+	* "amlogic,meson8-rtc"
+	* "amlogic,meson8b-rtc"
+	* "amlogic,meson8m2-rtc"
+
+- reg: physical register space for the controller's memory mapped registers.
+- interrupts: the interrupt line of the RTC block.
+- clocks: reference to the external 32.768kHz crystal oscillator.
+- vdd-supply: reference to the power supply of the RTC block.
+- resets: reset controller reference to allow reset of the controller
+
+Optional properties:
+- #address-cells: should be 1 to address the internal non-volatile memory
+- #address-cells: should be 1 to reference the internal non-volatile memory
+
+Optional child nodes:
+- see ../nvmem/nvmem.txt
+
+Example:
+
+	rtc: rtc@740 {
+		compatible = "amlogic,meson6-rtc";
+		reg = <0x740 0x14>;
+		interrupts = <GIC_SPI 72 IRQ_TYPE_EDGE_RISING>;
+		clocks = <&rtc32k_xtal>;
+		vdd-supply = <&rtc_vdd>;
+		resets = <&reset RESET_RTC>;
+	};
-- 
2.20.1


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Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-19 14:43 [PATCH v6 0/2] Amlogic Meson6/8/8b/8m2 SoC RTC driver Martin Blumenstingl
2019-01-19 14:43 ` Martin Blumenstingl [this message]
2019-02-06 22:30   ` [PATCH v6 1/2] dt-bindings: rtc: add device-tree bindings for the Amlogic Meson RTC Alexandre Belloni
2019-02-09  0:10     ` Martin Blumenstingl
2019-01-19 14:43 ` [PATCH v6 2/2] rtc: support " Martin Blumenstingl
2019-02-06 22:38   ` Alexandre Belloni

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