From: Heiko Stuebner <heiko@sntech.de>
To: William Wu <william.wu@rock-chips.com>
Cc: robh+dt@kernel.org, mark.rutland@arm.com, linux@armlinux.org.uk,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org,
frank.wang@rock-chips.com, huangtao@rock-chips.com,
daniel.meng@rock-chips.com
Subject: Re: [PATCH] arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3
Date: Fri, 18 Aug 2017 11:18:24 +0200 [thread overview]
Message-ID: <4718044.sxV3Y2WdLf@phil> (raw)
In-Reply-To: <1502958272-1384-1-git-send-email-william.wu@rock-chips.com>
Am Donnerstag, 17. August 2017, 16:24:32 CEST schrieb William Wu:
> RK3399 USB DWC3 controller has a issue that FS/LS devices not
> recognized if inserted through USB 3.0 HUB. It's because that
> the inter-packet delay between the SSPLIT token to SETUP token
> is about 566ns, more then the USB spec requirement.
>
> This patch adds a quirk "snps,dis-tx-ipgap-linecheck-quirk" to
> disable the u2mac linestate check to decrease the SSPLIT token
> to SETUP token inter-packet delay from 566ns to 466ns.
>
> Signed-off-by: William Wu <william.wu@rock-chips.com>
applied for 4.14
Thanks
Heiko
prev parent reply other threads:[~2017-08-18 9:18 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-17 8:24 [PATCH] arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3 William Wu
2017-08-18 9:18 ` Heiko Stuebner [this message]
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