[PATCH 2/2] phy: driver for Conexant Digicolor internal USB PHY
From: baruch@tkos.co.il (Baruch Siach)
Date: 2015-03-31 11:34:57
Also in:
linux-devicetree, lkml
From: baruch@tkos.co.il (Baruch Siach)
Date: 2015-03-31 11:34:57
Also in:
linux-devicetree, lkml
Hi Marek, On Sat, Mar 28, 2015 at 04:33:02PM +0100, Marek Vasut wrote:
On Friday, March 27, 2015 at 05:36:29 AM, Baruch Siach wrote:quoted
Add a driver for the USB PHY on the Conexant CX92755 SoC, from the Digicolor series of SoCs. The PHY is connected to the on-chip chipidea usb2 host. The hardware is somewhat similar to the phy-mxs-usb.c usb_phy, but it is different enough to merit its own driver. Also, this driver uses the generic phy infrastructure.the register set looks very similar to MXS one indeed. How is it different please ?
Almost of the bits that are defined in the MXS USBPHY_CTRL register are not defined in the Digicolor one. Some have different meaning, and some are reserved. OTOH, the Digicolor USBPHY_CTRL register uses all bits in the 1-13 range. Also, the Digicolor phy does not have anatop registers.
The driver looks OK.
Thanks.
BTW, do you know why the phy-mxs-usb driver calls its init from
postcore_initcall? Is there a special need to register the driver so early?
baruch
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