Re: [PATCH V2 1/5] dt-bindings: usb: xhci-tegra: Add power-domain details

Jon Hunter
2018-10-12T07:36:11Z

On 11/10/18 17:49, Thierry Reding wrote:
> On Fri, Sep 28, 2018 at 03:11:46PM +0100, Jon Hunter wrote:
>> Add details for power-domains to the Tegra xHCI bindings so that
>> generic power-domains can be used for inconjunction with the xHCI
>> driver.
>>
>> Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
>> ---
>> Documentation/devicetree/bindings/usb/nvidia,tegra124-xusb.txt | 8 ++++++++
>> 1 file changed, 8 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xusb.txt b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xusb.txt
>> index 3eee9e505400..4156c3e181c5 100644
>> --- a/Documentation/devicetree/bindings/usb/nvidia,tegra124-xusb.txt
>> +++ b/Documentation/devicetree/bindings/usb/nvidia,tegra124-xusb.txt
>> @@ -59,6 +59,14 @@ For Tegra210:
>> - avdd-pll-uerefe-supply: PLLE reference PLL power supply. Must supply 1.05 V.
>> - dvdd-pex-pll-supply: PCIe/USB3 PLL power supply. Must supply 1.05 V.
>> - hvdd-pex-pll-e-supply: High-voltage PLLE power supply. Must supply 1.8 V.
>> +- power-domains: A list of PM domain specifiers that reference each power-domain
>> + used by the xHCI controller. This list must comprise of a specifier for the
>> + XUSBA and XUSBC power-domains. See ../power/power_domain.txt and
>> + ../arm/tegra/nvidia,tegra20-pmc.txt for details.
>> +- power-domain-names: A list of names that represent each of the specifiers in
>> + the 'power-domains' property. Must include 'xusb_ss' and 'xusb_host' which
>
> Total bike-shed comment: maybe call these "superspeed" and "host" or
> something. The xusb_ prefix is kind of redundent because of the context.
> On the other hand, those are the names by which the power partitions are
> referred to, so either way:

I choose these names because they align with what we already have for
clocks ...

- clock-names: Must include the following entries:
- xusb_host
- xusb_host_src
- xusb_falcon_src
- xusb_ss
- xusb_ss_src
- xusb_ss_div2
- xusb_hs_src
- xusb_fs_src
- pll_u_480m
- clk_m
- pll_e

However, I don't have a strong preference.

> Acked-by: Thierry Reding <treding@nvidia.com>

Thanks!
Jon

--
nvpublic