[PATCH RESEND V4 5/9] of: Add NVIDIA Tegra xHCI controller binding
From: Thierry Reding <hidden>
Date: 2014-10-29 09:58:22
Also in:
linux-devicetree, linux-tegra, lkml
On Tue, Oct 28, 2014 at 03:27:52PM -0700, Andrew Bresticker wrote: [...]
quoted hunk ↗ jump to hunk
diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt
[...]
+ - pll_u_480m + - clk_m + - pll_e
What are these used for? I guess I'll see when I get to the driver patch.
+Optional properties:
+--------------------
+ - phys: Must contain an entry for each entry in phy-names.
+ See ../phy/phy-bindings.txt for details.
+ - phy-names: Should include an entry for each PHY used by the controller.
+ May be a subset of the following:
+ - utmi-{0,1,2}
+ - hsic-{0,1}
+ - usb3-{0,1}
+ - avddio-pex-supply: PCIe/USB3 analog logic power supply. Must supply 1.05V.
+ - dvddio-pex-supply: PCIe/USB3 digital logic power supply. Must supply 1.05V.
+ - avdd-usb-supply: USB controller power supply. Must supply 3.3V.
+ - avdd-pll-utmip-supply: UTMI PLL power supply. Must supply 1.8V.
+ - avdd-pll-erefe-supply: PLLE reference PLL power supply. Must supply 1.05V.
+ - avdd-pex-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05V.
+ - hvdd-pex-supply: High-voltage PCIe/USB3 power supply. Must supply 3.3V.
+ - hvdd-pex-plle-supply: High-voltage PLLE power supply. Must supply 3.3V.I think the name for this in the documentation is HVDD_PEX_PLL_E, which would translate to hvdd-pex-pll-e. At least that's how we named this supply for PCIe. Alternatively it seems like there are aliases for the USB 3.0 related supplies: avdd-pex-pll -> avdd-usb-ss-pll hvdd-pex -> hvdd-usb-ss hvdd-pex-pll-e -> hvdd-usb-ss-pll-e So perhaps these could be used for the XHCI driver instead? Also, should these supplies not be mandatory? Thierry -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20141029/67a8622c/attachment.sig>