From: William Wu Date: Thu, 17 Aug 2017 08:24:32 +0000 (+0800) Subject: arm64: dts: rockchip: disable tx ipgap linecheck for rk3399 dwc3 X-Git-Tag: v4.14-rc1~66^2^2~5^2~14 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1d5bcbbd982921013638ada984167e2f591ab74b;p=platform%2Fkernel%2Flinux-exynos.git 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 Signed-off-by: Heiko Stuebner --- diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi index 27a4616..69cb311 100644 --- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi @@ -412,6 +412,7 @@ snps,dis-u2-freeclk-exists-quirk; snps,dis_u2_susphy_quirk; snps,dis-del-phy-power-chg-quirk; + snps,dis-tx-ipgap-linecheck-quirk; status = "disabled"; }; }; @@ -439,6 +440,7 @@ snps,dis-u2-freeclk-exists-quirk; snps,dis_u2_susphy_quirk; snps,dis-del-phy-power-chg-quirk; + snps,dis-tx-ipgap-linecheck-quirk; status = "disabled"; }; };