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

[Andrew Bresticker]

On Wed, Jun 25, 2014 at 2:54 PM, Stephen Warren <swarren@xxxxxxxxxxxxx> wrote:
> On 06/18/2014 12:16 AM, Andrew Bresticker wrote:
>> Add device-tree binding documentation for the XHCI controller present
>> on Tegra124 and later SoCs.
>
>> diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xhci.txt
>
>> + - 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.

>> +    - 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.
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