aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation
diff options
context:
space:
mode:
authorRay Jui <rjui@broadcom.com>2015-02-07 21:25:24 -0800
committerWolfram Sang <wsa@the-dreams.de>2015-02-17 16:44:13 +0100
commite6e5dd3566e092459a11083e5c0775d01df8682f (patch)
tree51f0c92d80b178fbe2352ae8acd2da3de3a25c86 /Documentation
parenta93ac5786d26851fd5df42338e26593cb8d58725 (diff)
i2c: iproc: Add Broadcom iProc I2C Driver
Add initial support to the Broadcom iProc I2C controller found in the iProc family of SoCs. The iProc I2C controller has separate internal TX and RX FIFOs, each has a size of 64 bytes. The iProc I2C controller supports two bus speeds including standard mode (100kHz) and fast mode (400kHz) Signed-off-by: Ray Jui <rjui@broadcom.com> Reviewed-by: Scott Branden <sbranden@broadcom.com> Reviewed-by: Kevin Cernekee <cernekee@chromium.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt37
1 files changed, 37 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt b/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt
new file mode 100644
index 000000000000..81f982ccca31
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/brcm,iproc-i2c.txt
@@ -0,0 +1,37 @@
+Broadcom iProc I2C controller
+
+Required properties:
+
+- compatible:
+ Must be "brcm,iproc-i2c"
+
+- reg:
+ Define the base and range of the I/O address space that contain the iProc
+ I2C controller registers
+
+- interrupts:
+ Should contain the I2C interrupt
+
+- clock-frequency:
+ This is the I2C bus clock. Need to be either 100000 or 400000
+
+- #address-cells:
+ Always 1 (for I2C addresses)
+
+- #size-cells:
+ Always 0
+
+Example:
+ i2c0: i2c@18008000 {
+ compatible = "brcm,iproc-i2c";
+ reg = <0x18008000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ interrupts = <GIC_SPI 85 IRQ_TYPE_NONE>;
+ clock-frequency = <100000>;
+
+ codec: wm8750@1a {
+ compatible = "wlf,wm8750";
+ reg = <0x1a>;
+ };
+ };

Privacy Policy