diff options
| author | Naveen Krishna Ch <ch.naveen@samsung.com> | 2013-10-16 11:00:42 +0530 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2013-11-01 14:10:01 +0100 |
| commit | 8a73cd4cfa159918da405d9645deca842590e2fe (patch) | |
| tree | aa16ca938392e4247875b7080797930ec2f17659 /Documentation | |
| parent | 043a3f113ce41e3e6fdbb49551df75e82e8c4ae7 (diff) | |
| download | linux-8a73cd4cfa159918da405d9645deca842590e2fe.tar.gz linux-8a73cd4cfa159918da405d9645deca842590e2fe.tar.bz2 linux-8a73cd4cfa159918da405d9645deca842590e2fe.zip | |
i2c: exynos5: add High Speed I2C controller driver
Adds support for High Speed I2C driver found in Exynos5 and
later SoCs from Samsung.
Driver only supports Device Tree method.
Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Signed-off-by: Taekgyun Ko <taeggyun.ko@samsung.com>
Reviewed-by: Simon Glass <sjg@google.com>
Signed-off-by: Yuvaraj Kumar C D <yuvaraj.cd@samsung.com>
Signed-off-by: Andrew Bresticker <abrestic@google.com>
[wsa: rebased to v3.12-rc4 (no of_i2c.h anymore)]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/i2c/i2c-exynos5.txt | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt b/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt new file mode 100644 index 000000000000..056732cfdcee --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/i2c-exynos5.txt @@ -0,0 +1,44 @@ +* Samsung's High Speed I2C controller + +The Samsung's High Speed I2C controller is used to interface with I2C devices +at various speeds ranging from 100khz to 3.4Mhz. + +Required properties: + - compatible: value should be. + -> "samsung,exynos5-hsi2c", for i2c compatible with exynos5 hsi2c. + - reg: physical base address of the controller and length of memory mapped + region. + - interrupts: interrupt number to the cpu. + - #address-cells: always 1 (for i2c addresses) + - #size-cells: always 0 + + - Pinctrl: + - pinctrl-0: Pin control group to be used for this controller. + - pinctrl-names: Should contain only one value - "default". + +Optional properties: + - clock-frequency: Desired operating frequency in Hz of the bus. + -> If not specified, the bus operates in fast-speed mode at + at 100khz. + -> If specified, the bus operates in high-speed mode only if the + clock-frequency is >= 1Mhz. + +Example: + +hsi2c@12ca0000 { + compatible = "samsung,exynos5-hsi2c"; + reg = <0x12ca0000 0x100>; + interrupts = <56>; + clock-frequency = <100000>; + + pinctrl-0 = <&i2c4_bus>; + pinctrl-names = "default"; + + #address-cells = <1>; + #size-cells = <0>; + + s2mps11_pmic@66 { + compatible = "samsung,s2mps11-pmic"; + reg = <0x66>; + }; +}; |