| Message ID | 20200513071546.5560-5-frank.wang@rock-chips.com |
|---|---|
| State | New |
| Headers | show |
| Series |
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| Related | show |
On 2020/5/13 下午3:15, Frank Wang wrote: > From: Jagan Teki <jagan@amarulasolutions.com> > > This patch adds a quirk to disable USB 2.0 MAC linestate check > during HS transmit. Refer the dwc3 databook, we can use it for > some special platforms if the linestate not reflect the expected > line state(J) during transmission. > > When use this quirk, the controller implements a fixed 40-bit > TxEndDelay after the packet is given on UTMI and ignores the > linestate during the transmit of a token (during token-to-token > and token-to-data IPGAP). > > On some rockchip platforms (e.g. rk3399), it requires to disable > the u2mac linestate check to decrease the SSPLIT token to SETUP > token inter-packet delay from 566ns to 466ns, and fix the issue > that FS/LS devices not recognized if inserted through USB 3.0 HUB. > > Reference from below Linux commit, > > commit <65db7a0c9816> ("usb: dwc3: add disable u2mac linestate > check quirk") > > Cc: Marek Vasut <marex@denx.de> > Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Reviewed-by: Kever Yang <kever.yang@rock-chips.com> Thanks, - Kever > --- > drivers/usb/dwc3/core.c | 20 ++++++++++++++++++++ > drivers/usb/dwc3/core.h | 7 +++++++ > include/dwc3-uboot.h | 1 + > 3 files changed, 28 insertions(+) > > diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c > index 3cb66515a2..dc92f471c1 100644 > --- a/drivers/usb/dwc3/core.c > +++ b/drivers/usb/dwc3/core.c > @@ -725,6 +725,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev) > dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk; > dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk; > dwc->dis_del_phy_power_chg_quirk = dwc3_dev->dis_del_phy_power_chg_quirk; > + dwc->dis_tx_ipgap_linecheck_quirk = dwc3_dev->dis_tx_ipgap_linecheck_quirk; > dwc->dis_enblslpm_quirk = dwc3_dev->dis_enblslpm_quirk; > dwc->dis_u2_freeclk_exists_quirk = dwc3_dev->dis_u2_freeclk_exists_quirk; > > @@ -934,6 +935,8 @@ void dwc3_of_parse(struct dwc3 *dwc) > "snps,dis_u2_susphy_quirk"); > dwc->dis_del_phy_power_chg_quirk = dev_read_bool(dev, > "snps,dis-del-phy-power-chg-quirk"); > + dwc->dis_tx_ipgap_linecheck_quirk = dev_read_bool(dev, > + "snps,dis-tx-ipgap-linecheck-quirk"); > dwc->dis_enblslpm_quirk = dev_read_bool(dev, > "snps,dis_enblslpm_quirk"); > dwc->dis_u2_freeclk_exists_quirk = dev_read_bool(dev, > @@ -954,6 +957,7 @@ void dwc3_of_parse(struct dwc3 *dwc) > int dwc3_init(struct dwc3 *dwc) > { > int ret; > + u32 reg; > > dwc3_cache_hwparams(dwc); > > @@ -975,6 +979,22 @@ int dwc3_init(struct dwc3 *dwc) > goto event_fail; > } > > + if (dwc->revision >= DWC3_REVISION_250A) { > + reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); > + > + /* > + * Enable hardware control of sending remote wakeup > + * in HS when the device is in the L1 state. > + */ > + if (dwc->revision >= DWC3_REVISION_290A) > + reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; > + > + if (dwc->dis_tx_ipgap_linecheck_quirk) > + reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; > + > + dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); > + } > + > ret = dwc3_core_init_mode(dwc); > if (ret) > goto mode_fail; > diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h > index c5e656885a..b510d8a983 100644 > --- a/drivers/usb/dwc3/core.h > +++ b/drivers/usb/dwc3/core.h > @@ -73,6 +73,7 @@ > #define DWC3_GCTL 0xc110 > #define DWC3_GEVTEN 0xc114 > #define DWC3_GSTS 0xc118 > +#define DWC3_GUCTL1 0xc11c > #define DWC3_GSNPSID 0xc120 > #define DWC3_GGPIO 0xc124 > #define DWC3_GUID 0xc128 > @@ -159,6 +160,10 @@ > #define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1) > #define DWC3_GCTL_DSBLCLKGTNG (1 << 0) > > +/* Global User Control 1 Register */ > +#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) > +#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) > + > /* Global USB2 PHY Configuration Register */ > #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) > #define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS (1 << 30) > @@ -771,6 +776,7 @@ struct dwc3 { > #define DWC3_REVISION_260A 0x5533260a > #define DWC3_REVISION_270A 0x5533270a > #define DWC3_REVISION_280A 0x5533280a > +#define DWC3_REVISION_290A 0x5533290a > > enum dwc3_ep0_next ep0_next_event; > enum dwc3_ep0_state ep0state; > @@ -824,6 +830,7 @@ struct dwc3 { > unsigned dis_u3_susphy_quirk:1; > unsigned dis_u2_susphy_quirk:1; > unsigned dis_del_phy_power_chg_quirk:1; > + unsigned dis_tx_ipgap_linecheck_quirk:1; > unsigned dis_enblslpm_quirk:1; > unsigned dis_u2_freeclk_exists_quirk:1; > > diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h > index 193d225d31..e08530ec4e 100644 > --- a/include/dwc3-uboot.h > +++ b/include/dwc3-uboot.h > @@ -34,6 +34,7 @@ struct dwc3_device { > unsigned dis_u3_susphy_quirk; > unsigned dis_u2_susphy_quirk; > unsigned dis_del_phy_power_chg_quirk; > + unsigned dis_tx_ipgap_linecheck_quirk; > unsigned dis_enblslpm_quirk; > unsigned dis_u2_freeclk_exists_quirk; > unsigned tx_de_emphasis_quirk;
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3cb66515a2..dc92f471c1 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -725,6 +725,7 @@ int dwc3_uboot_init(struct dwc3_device *dwc3_dev) dwc->dis_u3_susphy_quirk = dwc3_dev->dis_u3_susphy_quirk; dwc->dis_u2_susphy_quirk = dwc3_dev->dis_u2_susphy_quirk; dwc->dis_del_phy_power_chg_quirk = dwc3_dev->dis_del_phy_power_chg_quirk; + dwc->dis_tx_ipgap_linecheck_quirk = dwc3_dev->dis_tx_ipgap_linecheck_quirk; dwc->dis_enblslpm_quirk = dwc3_dev->dis_enblslpm_quirk; dwc->dis_u2_freeclk_exists_quirk = dwc3_dev->dis_u2_freeclk_exists_quirk; @@ -934,6 +935,8 @@ void dwc3_of_parse(struct dwc3 *dwc) "snps,dis_u2_susphy_quirk"); dwc->dis_del_phy_power_chg_quirk = dev_read_bool(dev, "snps,dis-del-phy-power-chg-quirk"); + dwc->dis_tx_ipgap_linecheck_quirk = dev_read_bool(dev, + "snps,dis-tx-ipgap-linecheck-quirk"); dwc->dis_enblslpm_quirk = dev_read_bool(dev, "snps,dis_enblslpm_quirk"); dwc->dis_u2_freeclk_exists_quirk = dev_read_bool(dev, @@ -954,6 +957,7 @@ void dwc3_of_parse(struct dwc3 *dwc) int dwc3_init(struct dwc3 *dwc) { int ret; + u32 reg; dwc3_cache_hwparams(dwc); @@ -975,6 +979,22 @@ int dwc3_init(struct dwc3 *dwc) goto event_fail; } + if (dwc->revision >= DWC3_REVISION_250A) { + reg = dwc3_readl(dwc->regs, DWC3_GUCTL1); + + /* + * Enable hardware control of sending remote wakeup + * in HS when the device is in the L1 state. + */ + if (dwc->revision >= DWC3_REVISION_290A) + reg |= DWC3_GUCTL1_DEV_L1_EXIT_BY_HW; + + if (dwc->dis_tx_ipgap_linecheck_quirk) + reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; + + dwc3_writel(dwc->regs, DWC3_GUCTL1, reg); + } + ret = dwc3_core_init_mode(dwc); if (ret) goto mode_fail; diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index c5e656885a..b510d8a983 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -73,6 +73,7 @@ #define DWC3_GCTL 0xc110 #define DWC3_GEVTEN 0xc114 #define DWC3_GSTS 0xc118 +#define DWC3_GUCTL1 0xc11c #define DWC3_GSNPSID 0xc120 #define DWC3_GGPIO 0xc124 #define DWC3_GUID 0xc128 @@ -159,6 +160,10 @@ #define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1) #define DWC3_GCTL_DSBLCLKGTNG (1 << 0) +/* Global User Control 1 Register */ +#define DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS BIT(28) +#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) + /* Global USB2 PHY Configuration Register */ #define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) #define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS (1 << 30) @@ -771,6 +776,7 @@ struct dwc3 { #define DWC3_REVISION_260A 0x5533260a #define DWC3_REVISION_270A 0x5533270a #define DWC3_REVISION_280A 0x5533280a +#define DWC3_REVISION_290A 0x5533290a enum dwc3_ep0_next ep0_next_event; enum dwc3_ep0_state ep0state; @@ -824,6 +830,7 @@ struct dwc3 { unsigned dis_u3_susphy_quirk:1; unsigned dis_u2_susphy_quirk:1; unsigned dis_del_phy_power_chg_quirk:1; + unsigned dis_tx_ipgap_linecheck_quirk:1; unsigned dis_enblslpm_quirk:1; unsigned dis_u2_freeclk_exists_quirk:1; diff --git a/include/dwc3-uboot.h b/include/dwc3-uboot.h index 193d225d31..e08530ec4e 100644 --- a/include/dwc3-uboot.h +++ b/include/dwc3-uboot.h @@ -34,6 +34,7 @@ struct dwc3_device { unsigned dis_u3_susphy_quirk; unsigned dis_u2_susphy_quirk; unsigned dis_del_phy_power_chg_quirk; + unsigned dis_tx_ipgap_linecheck_quirk; unsigned dis_enblslpm_quirk; unsigned dis_u2_freeclk_exists_quirk; unsigned tx_de_emphasis_quirk;