Re: [PATCH v2] arm: dts: AM43x: Add usb_otg_hs node

From: George Cherian
Date: Tue Jul 09 2013 - 07:53:17 EST


On 7/9/2013 4:57 PM, Felipe Balbi wrote:
Hi,

On Tue, Jul 09, 2013 at 04:51:35PM +0530, George Cherian wrote:
+ compatible = "snps,dwc3";
+ reg = <0x48390000 0xcfff>;
weird size, shouldn't this be 0xd000 then the size would be exactly
52KiB
okay
btw, the reason here is that when you call devm_ioremap_resource(), that
will call resource_size() which does:

size = res->end - res->start - 1;

so you need this extra 1 on the size when passing it via DT.

agreed.
Another thing: am437x has 4 instances of this IP, why are you adding
only one ?
AM437x has got only 2 instances. I have verified only one on HAPS so
adding only one.
weird, on my TRM I see for dwc3 but 2 PHYs.

Please confirm whether you are looking at am437x TRM or dra7x TRM?
dra7x has 4 dwc3 and 2 internal phys and 2 external phys
And why aren't you pasing the PHY nodes here ? The device
won't work without its PHYs.
Yes true, again in HAPS I didnt have any PHY configuration to be done.
alright, but we should still pass the PHY right ? once silicon comes,
we want this to work without any further changers.

okay will add phy nodes and 2 instances of dwc3.



--
-George

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