linux_dsm_epyc7002/arch/arm64/boot/dts
William Wu 1d5bcbbd98 arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3
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>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2017-08-18 11:16:55 +02:00
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rockchip arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3 2017-08-18 11:16:55 +02:00
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