Re: [PATCH 0/5] ALSA: hda / ASoC: SOF: Add support for PIO command mode

[Jaroslav Kysela <perex@xxxxxxxx>]

On 09. 04. 24 10:38, Peter Ujfalusi wrote:
> Hi,
>
> This series will introduce support for using PIO for commands (immediate
> commands) instead of CORB while retaining the use of RIRB for unsolicited
> responses (notifications).

Hi,

Could you elaborate, how this affects CPU usage (busy loops for I/O)? Do the 
bus read operation wait until the data transfer on bus is finished?

> This mode of operation is the recommended one for Lunar Lake family.

A bit more explanation, please. It looks like a step back.

					Jaroslav

--
Jaroslav Kysela <perex@xxxxxxxx>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.