[PATCH RFC 1/4] phy: Add new Exynos5 USB 3.0 PHY driver
From: Kishon Vijay Abraham I <hidden>
Date: 2013-12-04 14:29:22
Also in:
linux-devicetree, linux-samsung-soc, lkml
Hi Vivek, On Wednesday 20 November 2013 09:14 PM, Kishon Vijay Abraham I wrote:
Hi, On Wednesday 20 November 2013 03:02 PM, Vivek Gautam wrote:quoted
On Wed, Nov 20, 2013 at 2:34 PM, Kishon Vijay Abraham I [off-list ref] wrote:quoted
On Wednesday 20 November 2013 02:27 PM, Vivek Gautam wrote:quoted
Hi Kishon, On Mon, Nov 11, 2013 at 4:41 PM, Kishon Vijay Abraham I [off-list ref] wrote:quoted
Hi,sorry for the delayed response.quoted
On Wednesday 06 November 2013 05:37 AM, Jingoo Han wrote:quoted
On Wednesday, November 06, 2013 2:58 AM, Vivek Gautam wrote:quoted
On Tue, Nov 5, 2013 at 5:33 PM, Jingoo Han [off-list ref] wrote:[.....]quoted
quoted
USB3.0 PHY consists of two blocks such as 3.0 block and 2.0 block. This USB3.0 PHY can support UTMI+ and PIPE3 interface for 3.0 block and 2.0 block, respectively. Conclusion: 1) USB2.0 PHY: USB2.0 HOST, USB2.0 Device Base address: 0x1213 0000 2) USB3.0 PHY: USB3.0 DRD (3.0 HOST & 3.0 Device) Base address: 0x1210 0000 2.0 block(UTMI+) & 3.0 block(PIPE3)And this is of course the PHY used by DWC3 controller, which works at both High speed as well as Super Speed. Right ?Right. While 3.0 block(PIPE3) can be used for Super Speed, 2.0 block(UTMI+) can be used for High speed.It should then come under *single IP muliple PHY* category similar to what Sylwester has done.Do you mean that i should be including PHY IDs for UTMI+ phy and PIPE3 phy present in this PHY block ? AFAICS the two phys (UTMI+ and PIPE3) do not really have separate registers to program, and that's the reason we program the entire PHY in a shot.you mean you program the same set of bits for UTMI+ and PIPE3?No, looking closely into PHY datasheet as well as Exynos5250 manual, i can see that UTMI+ and PIPE3 phys have separate bit settings. So i think we should be able to segregate the two PHYs (UTMI+ and PIPE3). Pardon me for my earlier observations.no problem..quoted
Let me clarify more with our h/w team also on this and then i will confirm with this.
Did you get more information on this? Thanks Kishon