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Message-ID: <e4cc043b-76b9-5cc6-2fc7-e6a5722037ce@infradead.org>
Date:   Mon, 24 Jul 2023 19:57:54 -0700
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Subject: Re: [PATCH v4 03/32] xhci: sideband: add initial api to register a
 sideband entity
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To:     Wesley Cheng <quic_wcheng@quicinc.com>, agross@kernel.org,
        andersson@kernel.org, robh+dt@kernel.org,
        krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
        catalin.marinas@arm.com, will@kernel.org, mathias.nyman@intel.com,
        gregkh@linuxfoundation.org, lgirdwood@gmail.com,
        broonie@kernel.org, perex@perex.cz, tiwai@suse.com,
        srinivas.kandagatla@linaro.org, bgoswami@quicinc.com,
        Thinh.Nguyen@synopsys.com
Cc:     linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-usb@vger.kernel.org, alsa-devel@alsa-project.org,
        quic_jackp@quicinc.com, pierre-louis.bossart@linux.intel.com,
        oneukum@suse.com, albertccwang@google.com, o-takashi@sakamocchi.jp,
        Mathias Nyman <mathias.nyman@linux.intel.com>
References: <20230725023416.11205-1-quic_wcheng@quicinc.com>
 <20230725023416.11205-4-quic_wcheng@quicinc.com>
From:   Randy Dunlap <rdunlap@infradead.org>
In-Reply-To: <20230725023416.11205-4-quic_wcheng@quicinc.com>
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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