[PATCH 3/5] ARM: davinci: da8xx: add cfgchip2 to resources
david at lechnology.com
Tue Mar 15 21:57:43 PDT 2016
On 03/15/2016 10:46 PM, David Lechner wrote:
> On 03/15/2016 05:45 PM, Sergei Shtylyov wrote:
>> No, this register is shared b/w MUSB and OHCI. The proper thing to
>> do is to write the PHY driver and let it control this shared register.
> OK. I've started working on this. I am looking at using struct usb_phy,
> however, enum usb_phy_type only has USB_PHY_TYPE_UNDEFINED,
> USB_PHY_TYPE_USB2, and USB_PHY_TYPE_USB3. Would it be acceptable to use
> USB_PHY_TYPE_UNDEFINED for the ohci since it is USB 1.1? Or perhaps I
> should use the more generic struct phy for that one?
Also, I am not finding any existing data structure to pass the musb
set_mode function to the phy in either usb_phy or usb_otg. Setting the
mode (host/peripheral/otg) is done in the same PHY register, so it seems
like it should be implemented in the new phy driver as well.
I guess I could use a generic phy instead and use phy_set_drvdata() to
share data between the phy driver and the musb driver. Does this sound
like a reasonable thing to do?
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