Re: [PATCH v2 3/5] dt-bindings: usb: xhci: Add 'write-64-hi-lo-quirk' quirk

Krzysztof Kozlowski
2024-05-31T08:12:08Z

On 31/05/2024 08:07, Daehwan Jung wrote:
> xHCI specification 5.1 "Register Conventions" states that 64 bit
> registers should be written in low-high order. All writing operations
> in xhci is done low-high order following the spec.

What is high-low / low-high order? Are you talking about endianness?

>
> Add a new quirk to support workaround for high-low order.

Why? If they should be written low-high, then why breaking the spec? Why
this cannot be deduced from compatible?

Which *upstream* hardware is affected?

Best regards,
Krzysztof