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[3/3] i2c: uniphier: add bindings for UniPhier I2C controllers

Message ID 1438243942-26401-4-git-send-email-yamada.masahiro@socionext.com
State New, archived
Headers show

Commit Message

Masahiro Yamada July 30, 2015, 8:12 a.m. UTC
Device Tree bindings for two I2C controllers embedded in
UniPhier SoCs.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
---

 .../devicetree/bindings/i2c/i2c-uniphier.txt       | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-uniphier.txt

Comments

Wolfram Sang Oct. 22, 2015, 9 p.m. UTC | #1
On Thu, Jul 30, 2015 at 05:12:22PM +0900, Masahiro Yamada wrote:
> Device Tree bindings for two I2C controllers embedded in
> UniPhier SoCs.
> 
> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

Please split this into two files with filenames matching those of the
drivers. I know they will be very similar but I'd like to keep
consistent.
Masahiro Yamada Oct. 23, 2015, 10:54 a.m. UTC | #2
2015-10-23 6:00 GMT+09:00 Wolfram Sang <wsa@the-dreams.de>:
> On Thu, Jul 30, 2015 at 05:12:22PM +0900, Masahiro Yamada wrote:
>> Device Tree bindings for two I2C controllers embedded in
>> UniPhier SoCs.
>>
>> Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
>
> Please split this into two files with filenames matching those of the
> drivers. I know they will be very similar but I'd like to keep
> consistent.
>

OK, I splited it in v2.

Each document was merged into the corresponding driver patch.
diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/i2c/i2c-uniphier.txt b/Documentation/devicetree/bindings/i2c/i2c-uniphier.txt
new file mode 100644
index 0000000..e4ddb50
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/i2c-uniphier.txt
@@ -0,0 +1,46 @@ 
+UniPhier I2C controller
+
+Two different types of I2C controller IPs are used on UniPhier SoC platform:
+- FIFO-less I2C controller on PH-LD4, PH1-sLD8 or older SoCs
+- FIFO-builtin I2C controller on PH1-Pro4 or newer SoCs
+
+Required properties:
+- compatible: should be one of the followings:
+	"socionext,uniphier-i2c"  (FIFO-less)
+	"socionext,uniphier-fi2c" (FIFO-builtin)
+- #address-cells: should be 1.
+- #size-cells: should be 0.
+- reg: offset and length of the register set for the device.
+- interrupts: a single interrupt specifier.
+- clocks: phandle to the input clock.
+
+Optional properties:
+- clock-frequency: desired I2C bus frequency in Hz.  The maximum supported
+  value is 400000.  Defaults to 100000 if not specified.
+
+Examples:
+
+- FIFO-less
+
+	i2c0: i2c@58400000 {
+		compatible = "socionext,uniphier-i2c";
+		reg = <0x58400000 0x40>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interrupts = <0 41 1>;
+		clocks = <&i2c_clk>;
+		clock-frequency = <100000>;
+	};
+
+
+- FIFO-builtin
+
+	i2c0: i2c@58780000 {
+		compatible = "socionext,uniphier-fi2c";
+		reg = <0x58780000 0x80>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		interrupts = <0 41 4>;
+		clocks = <&i2c_clk>;
+		clock-frequency = <100000>;
+	};