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usb: misc: usb3503: Support operation with no I2C control

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Refactor so that register writes for configuration are only performed if
the device has a regmap provided and also register as a platform driver.
This allows the driver to be used to manage GPIO based control of the
device.

Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: devicetree@vger.kernel.org
Reviewed-by: Dongjin Kim <tobetter@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mark Brown 2013-08-09 11:41:58 +01:00 • committed by Greg Kroah-Hartman
parent e5162d40b9
commit 3f0d1c67fa
2 changed files with 78 additions and 18 deletions
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3
Documentation/devicetree/bindings/usb/usb3503.txt
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@ -2,9 +2,10 @@ SMSC USB3503 High-Speed Hub Controller
Required properties:
- compatible: Should be "smsc,usb3503" or "smsc,usb3503a".
- reg: Specifies the i2c slave address, it should be 0x08.
Optional properties:
- reg: Specifies the i2c slave address, it is required and should be 0x08
if I2C is used.
- connect-gpios: Should specify GPIO for connect.
- disabled-ports: Should specify the ports unused.
'1' or '2' or '3' are availe for this property to describe the port