[PATCH v1 5/9] of: Add NVIDIA Tegra XHCI controller binding

On Wed, Jun 25, 2014 at 2:54 PM, Stephen Warren [off-list ref] wrote:

On 06/18/2014 12:16 AM, Andrew Bresticker wrote:

quoted

Add device-tree binding documentation for the XHCI controller present
on Tegra124 and later SoCs.

quoted

diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt

quoted

+ - clock-names: Must include the following entries:
+    - xusb_host
+    - xusb_falcon_src
+    - xusb_ss
+    - xusb_ss_src
+    - xusb_hs_src
+    - xusb_fs_src

Looking at include/dt-bindings/clock/tegra124-car.h I see a few entries
potentially missing here:

#define TEGRA124_CLK_XUSB_HOST_SRC 252
#define TEGRA124_CLK_XUSB_DEV_SRC 256
#define TEGRA124_CLK_XUSB_DEV 257
#define TEGRA124_CLK_XUSB_SS_DIV2 312

The driver doesn't use them, so I didn't put them in the binding.

quoted

+    - pll_u_480m

Not just pll_u?

We specifically want pll_u_480M as that's what we use as the parent of
xusb_ss_src when scaling it to 120Mhz.