linux-kernel - Re: [PATCH v4 03/32] xhci: sideband: add initial api to register a sideband entity

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Message-ID: <e4cc043b-76b9-5cc6-2fc7-e6a5722037ce@infradead.org>
Date:   Mon, 24 Jul 2023 19:57:54 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Wesley Cheng <quic_wcheng@...cinc.com>, agross@...nel.org,
        andersson@...nel.org, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        catalin.marinas@....com, will@...nel.org, mathias.nyman@...el.com,
        gregkh@...uxfoundation.org, lgirdwood@...il.com,
        broonie@...nel.org, perex@...ex.cz, tiwai@...e.com,
        srinivas.kandagatla@...aro.org, bgoswami@...cinc.com,
        Thinh.Nguyen@...opsys.com
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-usb@...r.kernel.org, alsa-devel@...a-project.org,
        quic_jackp@...cinc.com, pierre-louis.bossart@...ux.intel.com,
        oneukum@...e.com, albertccwang@...gle.com, o-takashi@...amocchi.jp,
        Mathias Nyman <mathias.nyman@...ux.intel.com>
Subject: Re: [PATCH v4 03/32] xhci: sideband: add initial api to register a
 sideband entity



On 7/24/23 19:33, Wesley Cheng wrote:
> diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
> index c170672f847e..d9dc92bea525 100644
> --- a/drivers/usb/host/Kconfig
> +++ b/drivers/usb/host/Kconfig
> @@ -104,6 +104,15 @@ config USB_XHCI_RZV2M
>  	  Say 'Y' to enable the support for the xHCI host controller
>  	  found in Renesas RZ/V2M SoC.
>  
> +config USB_XHCI_SIDEBAND
> +	bool "xHCI support for sideband"
> +	help
> +	  Say 'Y' to enable the support for the xHCI sideband capability.
> +	  provide a mechanism for a sideband datapath for payload associated

	  Provide

> +	  with audio class endpoints. This allows for an audio DSP to use
> +	  xHCI USB endpoints directly, allowing CPU to sleep while playing
> +	  audio

	  audio.


-- 
~Randy