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 v5 1/2] dt-bindings: rtc: add device-tree bindings for the Amlogic Meson RTC
Date: Sun, 2 Dec 2018 23:08:46 +0100 [thread overview]
Message-ID: <20181202220847.24364-2-martin.blumenstingl@googlemail.com> (raw)
In-Reply-To: <20181202220847.24364-1-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>;
+ };
--
2.19.2
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next prev parent reply other threads:[~2018-12-02 22:09 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-02 22:08 [PATCH v5 0/2] Amlogic Meson6/8/8b/8m2 SoC RTC driver Martin Blumenstingl
2018-12-02 22:08 ` Martin Blumenstingl [this message]
2018-12-02 22:08 ` [PATCH v5 2/2] rtc: support for the Amlogic Meson RTC Martin Blumenstingl
2018-12-05 13:11 ` kbuild test robot
2018-12-05 13:36 ` Ben Dooks
2018-12-05 15:02 ` Neil Armstrong
2018-12-05 22:15 ` Martin Blumenstingl
2018-12-17 23:48 ` Martin Blumenstingl
2018-12-27 21:56 ` Martin Blumenstingl
2019-01-12 12:52 ` Martin Blumenstingl
2019-01-16 21:29 ` Alexandre Belloni
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