Thread (14 messages) 14 messages, 2 authors, 2014-09-02

[PATCH v4 2/3] usb: dwc3: dwc3-st: Add st-dwc3 devicetree bindings documentation

From: Felipe Balbi <hidden>
Date: 2014-08-21 13:56:55
Also in: linux-devicetree, linux-omap, lkml

On Thu, Aug 21, 2014 at 02:33:40PM +0100, Peter Griffin wrote:
Hi Felipe,

Thanks for reviewing, see my comments below: -

On Wed, 20 Aug 2014, Felipe Balbi wrote:
quoted
quoted
+	dwc3: dwc3 at 9900000 {
+		compatible	= "snps,dwc3";
+		reg		= <0x09900000 0x100000>;
+		interrupts	= <GIC_SPI 155 IRQ_TYPE_NONE>;
+		dr_mode		= "host"
+		usb-phy		= <&usb3_phy>;
+		phy-names	= "usb2-phy";
+		phys		= <&usb2_picophy2>;
why are you using different binding for usb2 and usb3 phys ? Why can't
you just:

	phys-names	= "usb2-phy", "usb3-phy";
	phys		= <&usb2_picophy2>, <&usb3_phy>;

??
Currently (in the vendor tree) one of the phys lives in
drivers/usb/phy and the other in drivers/phy.
I believe that is because one is only a usb phy and the other is a
multi function phy which can drive PCI-E or USB3.
right, but for mainline, we can have both PHYs in drivers/phy only.
So to make that work, when dwc3/core.c gets the PHYS in
dwc3_core_get_phy() we need to use the different bindings.

I think we are the only platform using "one of each", but luckily
dwc3_core_get_phy() has been written generically enough that it "just
works" :-).
true, but I want to drop support for the legacy drivers/usb/phy layer
from dwc3. I'll try to move all PHYs to drivers/phy for v3.18.

cheers

-- 
balbi
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: Digital signature
URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20140821/300d80b2/attachment.sig>
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help