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Date: Tue, 10 Oct 2023 08:56:54 +0200
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: Jerome Brunet <jbrunet@baylibre.com>
Cc: linux-kernel@vger.kernel.org, linux-usb@vger.kernel.org,
	Neil Armstrong <neil.armstrong@linaro.org>
Subject: Re: [PATCH] usb: misc: onboard_usb_hub: extend gl3510 reset duration
Message-ID: <2023101036-ambiance-precision-657c@gregkh>
References: <20231006101028.1973730-1-jbrunet@baylibre.com>
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In-Reply-To: <20231006101028.1973730-1-jbrunet@baylibre.com>

On Fri, Oct 06, 2023 at 12:10:28PM +0200, Jerome Brunet wrote:
> Initial tests with the gl3510 has been done on libretech aml-a311d-cc.
> A 50us reset was fine as long as the hub node was under the usb phy node it
> DT. DT schema does not allow that. Moving the hub under the dwc3 controller
> caused issues, such as:
> 
> onboard-usb-hub 1-1: Failed to suspend device, error -32
> onboard-usb-hub 1-1: can't set config #1, error -71
> onboard-usb-hub 1-1: Failed to suspend device, error -32
> onboard-usb-hub 1-1: USB disconnect, device number 2
> 
> Extending the reset duration solves the problem.
> Since there is no documentation available for this hub, it is difficult to
> know the actual required reset duration. 200us seems to work fine so far.
> 
> Suggested-by: Neil Armstrong <neil.armstrong@linaro.org>
> Fixes: 65009ccf7e8f ("usb: misc: onboard_usb_hub: add Genesys Logic gl3510 hub support")

I can't find this git id, what tree is it in?

thanks,

greg k-h