| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| #include <device/mmio.h> |
| #include <console/console.h> |
| #include <delay.h> |
| #include <soc/usb.h> |
| #include <soc/clock.h> |
| |
| /* USB BASE ADDRESS */ |
| #define USB_HOST0_DWC3_BASE 0x758C100 |
| #define USB3_USB30_QSCRATCH_BASE 0x7678800 |
| #define USB2_FEMTO_PHY_PRI_BASE 0x007A000 |
| #define USB_HOST1_DWC3_BASE 0x78CC100 |
| #define USB2_USB30_QSCRATCH_BASE 0x79B8800 |
| #define USB2_FEMTO_PHY_SEC_BASE 0x007C000 |
| |
| struct usb_qscratch { |
| u8 rsvd0[8]; |
| u32 *qscratch_cfg_reg; |
| |
| }; |
| check_member(usb_qscratch, qscratch_cfg_reg, 0x08); |
| |
| struct usb_usb2_phy_dig { |
| u8 rsvd1[116]; |
| u32 utmi_ctrl5; |
| u32 ctrl_common0; |
| u32 ctrl_common1; |
| u8 rsvd2[12]; |
| u32 phy_ctrl1; |
| u32 phy_ctrl2; |
| u8 rsvd3; |
| u32 override_x0; |
| u32 override_x1; |
| u32 override_x2; |
| u32 override_x3; |
| u8 rsvd4[24]; |
| u32 tcsr_ctrl; |
| u8 rsvd5[36]; |
| u32 refclk_ctrl; |
| }; |
| check_member(usb_usb2_phy_dig, utmi_ctrl5, 0x74); |
| check_member(usb_usb2_phy_dig, phy_ctrl1, 0x8C); |
| check_member(usb_usb2_phy_dig, override_x0, 0x98); |
| check_member(usb_usb2_phy_dig, tcsr_ctrl, 0xC0); |
| check_member(usb_usb2_phy_dig, refclk_ctrl, 0xE8); |
| |
| struct usb_dwc3 { |
| u32 sbuscfg0; |
| u32 sbuscfg1; |
| u32 txthrcfg; |
| u32 rxthrcfg; |
| u32 ctl; |
| u32 pmsts; |
| u32 sts; |
| u32 uctl1; |
| u32 snpsid; |
| u32 gpio; |
| u32 uid; |
| u32 uctl; |
| u64 buserraddr; |
| u64 prtbimap; |
| u8 reserved1[32]; |
| u32 dbgfifospace; |
| u32 dbgltssm; |
| u32 dbglnmcc; |
| u32 dbgbmu; |
| u32 dbglspmux; |
| u32 dbglsp; |
| u32 dbgepinfo0; |
| u32 dbgepinfo1; |
| u64 prtbimap_hs; |
| u64 prtbimap_fs; |
| u8 reserved2[112]; |
| u32 usb2phycfg; |
| u8 reserved3[60]; |
| u32 usb2i2cctl; |
| u8 reserved4[60]; |
| u32 usb2phyacc; |
| u8 reserved5[60]; |
| u32 usb3pipectl; |
| u8 reserved6[60]; |
| }; |
| check_member(usb_dwc3, usb3pipectl, 0x1c0); |
| |
| struct usb_dwc3_cfg { |
| struct usb_dwc3 *usb_host_dwc3; |
| struct usb_usb2_phy_dig *usb2_phy_dig; |
| struct usb_qscratch *usb_qscratch_reg; |
| u32 *usb2_phy_bcr; |
| u32 *usb2_phy_por_bcr; |
| u32 *usb3_bcr; |
| struct usb_board_data *board_data; |
| }; |
| |
| static struct usb_dwc3_cfg usb_host_base[2] = { |
| [HSUSB_SS_PORT_0] = { |
| .usb_host_dwc3 = (void *)USB_HOST0_DWC3_BASE, |
| .usb2_phy_dig = (void *)USB2_FEMTO_PHY_PRI_BASE, |
| .usb2_phy_bcr = (void *)GCC_USB_HS_PHY_CFG_AHB_BCR, |
| .usb2_phy_por_bcr = (void *)GCC_USB2A_PHY_BCR, |
| .usb3_bcr = (void *)GCC_USB_30_BCR, |
| .usb_qscratch_reg = (void *)USB3_USB30_QSCRATCH_BASE, |
| }, |
| [HSUSB_HS_PORT_1] = { |
| .usb_host_dwc3 = (void *)USB_HOST1_DWC3_BASE, |
| .usb2_phy_dig = (void *)USB2_FEMTO_PHY_SEC_BASE, |
| .usb2_phy_bcr = (void *)GCC_QUSB2_PHY_BCR, |
| .usb2_phy_por_bcr = (void *)GCC_USB2_HS_PHY_ONLY_BCR, |
| .usb3_bcr = (void *)GCC_USB_HS_BCR, |
| .usb_qscratch_reg = (void *)USB2_USB30_QSCRATCH_BASE, |
| }, |
| }; |
| |
| void reset_usb(enum usb_port port) |
| { |
| struct usb_dwc3_cfg *dwc3 = &usb_host_base[port]; |
| |
| /* Put Core in Reset */ |
| printk(BIOS_INFO, "Starting DWC3 reset for USB%d\n", port); |
| |
| /* Assert Core reset */ |
| clock_reset_bcr(dwc3->usb3_bcr, 1); |
| } |
| |
| static void usb2_phy_override_phy_params(struct usb_dwc3_cfg *dwc3) |
| { |
| /* Override disconnect & squelch threshold values */ |
| write8(&dwc3->usb2_phy_dig->override_x0, |
| dwc3->board_data->parameter_override_x0); |
| |
| /* Override HS transmitter Pre-emphasis values */ |
| write8(&dwc3->usb2_phy_dig->override_x1, |
| dwc3->board_data->parameter_override_x1); |
| |
| /* Override HS transmitter Rise/Fall time values */ |
| write8(&dwc3->usb2_phy_dig->override_x2, |
| dwc3->board_data->parameter_override_x2); |
| |
| /* Override FS/LS Source impedance values */ |
| write8(&dwc3->usb2_phy_dig->override_x3, |
| dwc3->board_data->parameter_override_x3); |
| } |
| |
| static void hs_usb_phy_init(struct usb_dwc3_cfg *dwc3) |
| { |
| write8(&dwc3->usb2_phy_dig->tcsr_ctrl, USB2PHY_TCSR_CTRL); |
| write8(&dwc3->usb2_phy_dig->refclk_ctrl, USB2PHY_REFCLK_CTRL); |
| write8(&dwc3->usb2_phy_dig->utmi_ctrl5, USB2PHY_UTMI_CTRL5); |
| write8(&dwc3->usb2_phy_dig->override_x0, USB2PHY_PARAMETER_OVERRIDE_X0); |
| write8(&dwc3->usb2_phy_dig->override_x1, USB2PHY_PARAMETER_OVERRIDE_X1); |
| write8(&dwc3->usb2_phy_dig->override_x2, USB2PHY_PARAMETER_OVERRIDE_X2); |
| write8(&dwc3->usb2_phy_dig->override_x3, USB2PHY_PARAMETER_OVERRIDE_X3); |
| |
| if (dwc3->board_data) |
| /* Override board specific PHY tuning values */ |
| usb2_phy_override_phy_params(dwc3); |
| |
| write8(&dwc3->usb2_phy_dig->phy_ctrl1, USB2PHY_HS_PHY_CTRL1); |
| write8(&dwc3->usb2_phy_dig->ctrl_common0, QUSB2PHY_HS_PHY_CTRL_COMMON0); |
| write8(&dwc3->usb2_phy_dig->ctrl_common1, QUSB2PHY_HS_PHY_CTRL_COMMON1); |
| write8(&dwc3->usb2_phy_dig->phy_ctrl2, USB2PHY_HS_PHY_CTRL2); |
| udelay(20); |
| write8(&dwc3->usb2_phy_dig->utmi_ctrl5, USB2PHY_UTMI_CTRL5_POR_CLEAR); |
| write8(&dwc3->usb2_phy_dig->phy_ctrl2, |
| USB2PHY_HS_PHY_CTRL2_SUSPEND_N_SEL); |
| } |
| |
| static void setup_dwc3(struct usb_dwc3 *dwc3) |
| { |
| /* core exits U1/U2/U3 only in PHY power state P1/P2/P3 respectively */ |
| clrsetbits32(&dwc3->usb3pipectl, |
| DWC3_GUSB3PIPECTL_DELAYP1TRANS, |
| DWC3_GUSB3PIPECTL_UX_EXIT_IN_PX); |
| |
| clrsetbits32(&dwc3->ctl, (DWC3_GCTL_SCALEDOWN_MASK | |
| DWC3_GCTL_DISSCRAMBLE), |
| DWC3_GCTL_U2EXIT_LFPS | DWC3_GCTL_DSBLCLKGTNG); |
| |
| /* configure controller in Host mode */ |
| clrsetbits32(&dwc3->ctl, (DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG)), |
| DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_HOST)); |
| printk(BIOS_INFO, "Configure USB in Host mode\n"); |
| } |
| |
| /* Initialization of DWC3 Core and PHY */ |
| void setup_usb_host(enum usb_port port, struct usb_board_data *board_data) |
| { |
| struct usb_dwc3_cfg *dwc3 = &usb_host_base[port]; |
| u32 val; |
| |
| printk(BIOS_INFO, "Setting up USB HOST%d controller.\n", port); |
| |
| dwc3->board_data = board_data; |
| |
| /* Clear core reset. */ |
| clock_reset_bcr(dwc3->usb3_bcr, 0); |
| |
| |
| if (port == HSUSB_SS_PORT_0) { |
| /* Set PHY reset. */ |
| setbits32(&dwc3->usb2_phy_bcr, BIT(1)); |
| udelay(15); |
| /* Clear PHY reset. */ |
| clrbits32(&dwc3->usb2_phy_bcr, BIT(1)); |
| } else { |
| clock_reset_bcr(dwc3->usb2_phy_bcr, 1); |
| udelay(15); |
| clock_reset_bcr(dwc3->usb2_phy_bcr, 0); |
| } |
| udelay(100); |
| |
| /* Initialize PHYs */ |
| hs_usb_phy_init(dwc3); |
| |
| if (port == HSUSB_SS_PORT_0) { |
| /* Set PHY POR reset. */ |
| setbits32(&dwc3->usb2_phy_por_bcr, BIT(0)); |
| val = read8(&dwc3->usb2_phy_dig->ctrl_common0); |
| val &= ~(0x4); |
| write8(&dwc3->usb2_phy_dig->ctrl_common0, val); |
| udelay(20); |
| /* Clear PHY POR reset. */ |
| clrbits32(&dwc3->usb2_phy_por_bcr, BIT(0)); |
| } else { |
| clock_reset_bcr(dwc3->usb2_phy_por_bcr, 1); |
| val = read8(&dwc3->usb2_phy_dig->ctrl_common0); |
| val &= ~(0x4); |
| write8(&dwc3->usb2_phy_dig->ctrl_common0, val); |
| udelay(20); |
| clock_reset_bcr(dwc3->usb2_phy_por_bcr, 0); |
| } |
| udelay(100); |
| |
| setup_dwc3(dwc3->usb_host_dwc3); |
| |
| /* |
| * Below sequence is used when dwc3 operates without |
| * SSPHY and only HS/FS/LS modes are supported. |
| */ |
| |
| /* Configure dwc3 to use UTMI clock as PIPE clock not present */ |
| setbits32(&dwc3->usb_qscratch_reg->qscratch_cfg_reg, |
| PIPE_UTMI_CLK_DIS); |
| udelay(2); |
| setbits32(&dwc3->usb_qscratch_reg->qscratch_cfg_reg, |
| PIPE_UTMI_CLK_SEL | PIPE3_PHYSTATUS_SW); |
| udelay(3); |
| clrbits32(&dwc3->usb_qscratch_reg->qscratch_cfg_reg, |
| PIPE_UTMI_CLK_DIS); |
| |
| printk(BIOS_INFO, "DWC3 and PHY setup finished\n"); |
| } |