diff options
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index c2ce2f5e60a1..9e8920985d4d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -1323,6 +1323,24 @@ static void dwc3_config_threshold(struct dwc3 *dwc) } } +static void dwc3_set_axi_pipe_limit(struct dwc3 *dwc) +{ + struct device *dev = dwc->dev; + u32 cfg; + + if (!dwc->axi_pipe_limit) + return; + if (dwc->axi_pipe_limit > 16) { + dev_err(dev, "Invalid axi_pipe_limit property\n"); + return; + } + cfg = dwc3_readl(dwc->regs, DWC3_GSBUSCFG1); + cfg &= ~DWC3_GSBUSCFG1_PIPETRANSLIMIT(15); + cfg |= DWC3_GSBUSCFG1_PIPETRANSLIMIT(dwc->axi_pipe_limit - 1); + + dwc3_writel(dwc->regs, DWC3_GSBUSCFG1, cfg); +} + /** * dwc3_core_init - Low-level initialization of DWC3 Core * @dwc: Pointer to our controller context structure @@ -1390,6 +1408,8 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc3_config_soc_bus(dwc); + dwc3_set_axi_pipe_limit(dwc); + ret = dwc3_phy_power_on(dwc); if (ret) goto err_exit_phy; @@ -1463,12 +1483,21 @@ static int dwc3_core_init(struct dwc3 *dwc) if (dwc->dis_tx_ipgap_linecheck_quirk) reg |= DWC3_GUCTL1_TX_IPGAP_LINECHECK_DIS; + if (dwc->enh_nak_fs_quirk) + reg |= DWC3_GUCTL1_NAK_PER_ENH_FS; + + if (dwc->enh_nak_hs_quirk) + reg |= DWC3_GUCTL1_NAK_PER_ENH_HS; + if (dwc->parkmode_disable_ss_quirk) reg |= DWC3_GUCTL1_PARKMODE_DISABLE_SS; if (dwc->parkmode_disable_hs_quirk) reg |= DWC3_GUCTL1_PARKMODE_DISABLE_HS; + if (dwc->parkmode_disable_fsls_quirk) + reg |= DWC3_GUCTL1_PARKMODE_DISABLE_FSLS; + if (DWC3_VER_IS_WITHIN(DWC3, 290A, ANY)) { if (dwc->maximum_speed == USB_SPEED_FULL || dwc->maximum_speed == USB_SPEED_HIGH) @@ -1518,6 +1547,24 @@ static int dwc3_core_init(struct dwc3 *dwc) dwc3_writel(dwc->regs, DWC3_GUCTL3, reg); } + if (DWC3_IP_IS(DWC3) && dwc->dr_mode == USB_DR_MODE_HOST) { + u8 tx_thr_num = dwc->tx_thr_num_pkt_prd; + u8 tx_maxburst = dwc->tx_max_burst_prd; + + if (tx_thr_num && tx_maxburst) { + reg = dwc3_readl(dwc->regs, DWC3_GTXTHRCFG); + reg |= DWC3_GTXTHRCFG_PKTCNTSEL; + + reg &= ~DWC3_GTXTHRCFG_TXPKTCNT(~0); + reg |= DWC3_GTXTHRCFG_TXPKTCNT(tx_thr_num); + + reg &= ~DWC3_GTXTHRCFG_MAXTXBURSTSIZE(~0); + reg |= DWC3_GTXTHRCFG_MAXTXBURSTSIZE(tx_maxburst); + + dwc3_writel(dwc->regs, DWC3_GTXTHRCFG, reg); + } + } + return 0; err_power_off_phy: @@ -1703,6 +1750,7 @@ static void dwc3_get_properties(struct dwc3 *dwc) u8 tx_thr_num_pkt_prd = 0; u8 tx_max_burst_prd = 0; u8 tx_fifo_resize_max_num; + u8 axi_pipe_limit; u16 num_hc_interrupters; /* default to highest possible threshold */ @@ -1724,6 +1772,9 @@ static void dwc3_get_properties(struct dwc3 *dwc) */ tx_fifo_resize_max_num = 6; + /* Default to 0 (don't override hardware defaults) */ + axi_pipe_limit = 0; + /* default to a single XHCI interrupter */ num_hc_interrupters = 1; @@ -1823,10 +1874,16 @@ static void dwc3_get_properties(struct dwc3 *dwc) "snps,resume-hs-terminations"); dwc->ulpi_ext_vbus_drv = device_property_read_bool(dev, "snps,ulpi-ext-vbus-drv"); + dwc->enh_nak_fs_quirk = device_property_read_bool(dev, + "snps,enhanced-nak-fs-quirk"); + dwc->enh_nak_hs_quirk = device_property_read_bool(dev, + "snps,enhanced-nak-hs-quirk"); dwc->parkmode_disable_ss_quirk = device_property_read_bool(dev, "snps,parkmode-disable-ss-quirk"); dwc->parkmode_disable_hs_quirk = device_property_read_bool(dev, "snps,parkmode-disable-hs-quirk"); + dwc->parkmode_disable_fsls_quirk = device_property_read_bool(dev, + "snps,parkmode-disable-fsls-quirk"); dwc->gfladj_refclk_lpm_sel = device_property_read_bool(dev, "snps,gfladj-refclk-lpm-sel-quirk"); @@ -1847,6 +1904,9 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->dis_split_quirk = device_property_read_bool(dev, "snps,dis-split-quirk"); + device_property_read_u8(dev, "snps,axi-pipe-limit", + &axi_pipe_limit); + dwc->lpm_nyet_threshold = lpm_nyet_threshold; dwc->tx_de_emphasis = tx_de_emphasis; @@ -1864,6 +1924,10 @@ static void dwc3_get_properties(struct dwc3 *dwc) dwc->tx_thr_num_pkt_prd = tx_thr_num_pkt_prd; dwc->tx_max_burst_prd = tx_max_burst_prd; + dwc->axi_pipe_limit = axi_pipe_limit; + + dwc->imod_interval = 0; + dwc->tx_fifo_resize_max_num = tx_fifo_resize_max_num; dwc->num_hc_interrupters = num_hc_interrupters; |