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i2c: dt binding documentation for the Digicolor I2C controller

PATCH New Baruch Siach 2 participants 4 messages Mar 19, 2015

Subsystems (3)
Device tree bindings I2C subsystem host drivers Arm/conexant digicolor machine support
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Baruch Siach

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PATCH v3 1/2 i2c: dt binding documentation for the Digicolor I2C controller

The CX92755 is an SoC in the Conexant Digicolor series. This devicetree binding document describes the I2C controller on the CX92755 SoC, that is also shared by some other SoCs in the Digicolor series.

Signed-off-by Baruch Siach <[email protected]>

---
v3: No change
v2: No change

---
 .../devicetree/bindings/i2c/i2c-digicolor.txt      | 25 ++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i2c/i2c-digicolor.txt
Documentation/devicetree/bindings/i2c/i2c-digicolor.txt new file +25 -0
new file mode 100644
index 000000000000..457a098d4f7e
@@ -0,0 +1,25 @@
+Conexant Digicolor I2C controller
+
+Required properties:
+ - compatible: must be "cnxt,cx92755-i2c"
+ - reg: physical address and length of the device registers
+ - interrupts: a single interrupt specifier
+ - clocks: clock for the device
+ - #address-cells: should be <1>
+ - #size-cells: should be <0>
+
+Optional properties:
+- clock-frequency: the desired I2C bus clock frequency in Hz; in
+  absence of this property the default value is used (100 kHz).
+
+Example:
+
+	i2c: i2c at f0000120 {
+		compatible = "cnxt,cx92755-i2c";
+		reg = <0xf0000120 0x10>;
+		interrupts = <28>;
+		clocks = <&main_clk>;
+		clock-frequency = <100000>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
Signature · 1 line
2.1.4
author maintainer
#1 lore raw

PATCH v3 2/2 i2c: driver for the Conexant Digicolor I2C controller

Signed-off-by Baruch Siach <[email protected]>

---
v3:
* Fix checkpatch.pl errors

v2:
* Address the comment of Wolfram Sang:
- Advertise the I2C_FUNC_NOSTART capability
- Rebase on v4.0-rc1

---
 drivers/i2c/busses/Kconfig         |   9 +
 drivers/i2c/busses/Makefile        |   1 +
 drivers/i2c/busses/i2c-digicolor.c | 385 +++++++++++++++++++++++++++++++++++++
 3 files changed, 395 insertions(+)
 create mode 100644 drivers/i2c/busses/i2c-digicolor.c
drivers/i2c/busses/Kconfig +9 -0
index 22da9c2ffa22..db09881614b7 100644
@@ -485,6 +485,15 @@ config I2C_DESIGNWARE_BAYTRAIL
 	  the platform firmware controlling it. You should say Y if running on
 	  a BayTrail system using the AXP288.
 
+config I2C_DIGICOLOR
+	tristate "Conexant Digicolor I2C driver"
+	depends on ARCH_DIGICOLOR
+	help
+	  Support for Conexant Digicolor SoCs (CX92755) I2C controller driver.
+
+	  This driver can also be built as a module.  If so, the module
+	  will be called i2c-digicolor.
+
 config I2C_EFM32
 	tristate "EFM32 I2C controller"
 	depends on ARCH_EFM32 || COMPILE_TEST
drivers/i2c/busses/Makefile +1 -0
index 3638feb6677e..4413f09996cb 100644
@@ -45,6 +45,7 @@ i2c-designware-platform-objs := i2c-designware-platdrv.o
 i2c-designware-platform-$(CONFIG_I2C_DESIGNWARE_BAYTRAIL) += i2c-designware-baytrail.o
 obj-$(CONFIG_I2C_DESIGNWARE_PCI)	+= i2c-designware-pci.o
 i2c-designware-pci-objs := i2c-designware-pcidrv.o
+obj-$(CONFIG_I2C_DIGICOLOR)	+= i2c-digicolor.o
 obj-$(CONFIG_I2C_EFM32)		+= i2c-efm32.o
 obj-$(CONFIG_I2C_EG20T)		+= i2c-eg20t.o
 obj-$(CONFIG_I2C_EXYNOS5)	+= i2c-exynos5.o
drivers/i2c/busses/i2c-digicolor.c new file +385 -0

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Signature · 1 line
2.1.4
Applied
#2 lore raw

PATCH v3 2/2 i2c: driver for the Conexant Digicolor I2C controller

Quoted 1 line · Baruch Siach
Signed-off-by Baruch Siach <[email protected]>

I fixed two remaining 'check' issues with spaces around operators.

Applied to for-next, thanks!

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Applied
#3 lore raw

PATCH v3 1/2 i2c: dt binding documentation for the Digicolor I2C controller

In reply to Baruch Siach
Quoted 5 lines · Baruch Siach

The CX92755 is an SoC in the Conexant Digicolor series. This devicetree binding document describes the I2C controller on the CX92755 SoC, that is also shared by some other SoCs in the Digicolor series.

Signed-off-by Baruch Siach <[email protected]>

Applied to for-next, thanks!

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