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author | Benoit Cousson <b-cousson@ti.com> | 2011-12-22 14:56:36 (GMT) |
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committer | Ben Dooks <ben-linux@fluff.org> | 2012-01-17 22:44:57 (GMT) |
commit | 6145197be6cc0583fa1a2f4ec1079d366137061e (patch) | |
tree | ebade77ae1a25a56e822feed87c7135d01500083 /Documentation/devicetree/bindings/i2c | |
parent | 78e1cf42ee3efd2c3e8af0b97cf0a0a570cc0c1f (diff) | |
download | linux-fsl-qoriq-6145197be6cc0583fa1a2f4ec1079d366137061e.tar.xz |
i2c: OMAP: Add DT support for i2c controller
Add initial DT support to retrieve the frequency using a
DT attribute instead of the pdata pointer if of_node exist.
Add documentation for omap i2c controller binding.
Based on original patches from Manju and Grant.
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Reviewed-by: Rob Herring <rob.herring@calxeda.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Diffstat (limited to 'Documentation/devicetree/bindings/i2c')
-rw-r--r-- | Documentation/devicetree/bindings/i2c/omap-i2c.txt | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/i2c/omap-i2c.txt b/Documentation/devicetree/bindings/i2c/omap-i2c.txt new file mode 100644 index 0000000..56564aa --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/omap-i2c.txt @@ -0,0 +1,30 @@ +I2C for OMAP platforms + +Required properties : +- compatible : Must be "ti,omap3-i2c" or "ti,omap4-i2c" +- ti,hwmods : Must be "i2c<n>", n being the instance number (1-based) +- #address-cells = <1>; +- #size-cells = <0>; + +Recommended properties : +- clock-frequency : Desired I2C bus clock frequency in Hz. Otherwise + the default 100 kHz frequency will be used. + +Optional properties: +- Child nodes conforming to i2c bus binding + +Note: Current implementation will fetch base address, irq and dma +from omap hwmod data base during device registration. +Future plan is to migrate hwmod data base contents into device tree +blob so that, all the required data will be used from device tree dts +file. + +Examples : + +i2c1: i2c@0 { + compatible = "ti,omap3-i2c"; + #address-cells = <1>; + #size-cells = <0>; + ti,hwmods = "i2c1"; + clock-frequency = <400000>; +}; |