From: Baolin Wang <baolin.wang@spreadtrum.com>
To: <wsa@the-dreams.de>, <mark.rutland@arm.com>, <robh+dt@kernel.org>
Cc: <andriy.shevchenko@linux.intel.com>, <linux-i2c@vger.kernel.org>,
<devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<broonie@kernel.org>, <baolin.wang@linaro.org>,
<baolin.wang@spreadtrum.com>
Subject: [PATCH v4 1/2] dt-bindings: i2c: Add Spreadtrum I2C controller documentation
Date: Thu, 6 Jul 2017 16:47:06 +0800 [thread overview]
Message-ID: <eda1f25512db9c6946b303dd43f518ae2f0f3b26.1499330475.git.baolin.wang@spreadtrum.com> (raw)
This patch adds the binding documentation for Spreadtrum I2C
controller device.
Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com>
Acked-by: Rob Herring <robh@kernel.org>
---
Changes since v3:
- Add Ack from RobH.
Changes since v2:
- Change compatible strings to be SoC specific.
Changes since v1:
- No updates.
---
Documentation/devicetree/bindings/i2c/i2c-sprd.txt | 31 ++++++++++++++++++++
1 file changed, 31 insertions(+)
create mode 100644 Documentation/devicetree/bindings/i2c/i2c-sprd.txt
diff --git a/Documentation/devicetree/bindings/i2c/i2c-sprd.txt b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt
new file mode 100644
index 0000000..60b7cda
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-sprd.txt
@@ -0,0 +1,31 @@
+I2C for Spreadtrum platforms
+
+Required properties:
+- compatible: Should be "sprd,sc9860-i2c".
+- reg: Specify the physical base address of the controller and length
+ of memory mapped region.
+- interrupts: Should contain I2C interrupt.
+- clock-names: Should contain following entries:
+ "i2c" for I2C clock,
+ "source" for I2C source (parent) clock,
+ "enable" for I2C module enable clock.
+- clocks: Should contain a clock specifier for each entry in clock-names.
+- clock-frequency: Constains desired I2C bus clock frequency in Hz.
+- #address-cells: Should be 1 to describe address cells for I2C device address.
+- #size-cells: Should be 0 means no size cell for I2C device address.
+
+Optional properties:
+- Child nodes conforming to I2C bus binding
+
+Examples:
+i2c0: i2c@70500000 {
+ compatible = "sprd,sc9860-i2c";
+ reg = <0 0x70500000 0 0x1000>;
+ interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
+ clock-names = "i2c", "source", "enable";
+ clocks = <&clk_i2c3>, <&ext_26m>, <&clk_ap_apb_gates 11>;
+ clock-frequency = <400000>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+};
+
--
1.7.9.5
next reply other threads:[~2017-07-06 8:52 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-06 8:47 Baolin Wang [this message]
2017-07-06 8:47 ` [PATCH v4 2/2] i2c: Add Spreadtrum I2C controller driver Baolin Wang
2017-07-06 9:00 ` Andy Shevchenko
2017-07-06 9:10 ` Baolin Wang
2017-07-10 2:37 ` Baolin Wang
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