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-rw-r--r--src/soc/qualcomm/ipq40xx/usb.c430
1 files changed, 251 insertions, 179 deletions
diff --git a/src/soc/qualcomm/ipq40xx/usb.c b/src/soc/qualcomm/ipq40xx/usb.c
index a8d991059f..1ee0e3712f 100644
--- a/src/soc/qualcomm/ipq40xx/usb.c
+++ b/src/soc/qualcomm/ipq40xx/usb.c
@@ -20,203 +20,275 @@
#include <soc/iomap.h>
#include <soc/usb.h>
-#define CRPORT_TX_OVRD_DRV_LO 0x1002
-#define CRPORT_RX_OVRD_IN_HI 0x1006
-#define CRPORT_TX_ALT_BLOCK 0x102d
-
-static u32 * const tcsr_usb_sel = (void *)0x1a4000b0;
-
-struct usb_qc_phy {
- u32 ipcat;
- u32 ctrl;
- u32 general_cfg;
- u32 ram1;
- u32 hs_phy_ctrl;
- u32 param_ovrd;
- u32 chrg_det_ctrl;
- u32 chrg_det_output;
- u32 alt_irq_en;
- u32 hs_phy_irq_stat;
- u32 cgctl;
- u32 dbg_bus;
- u32 ss_phy_ctrl;
- u32 ss_phy_param1;
- u32 ss_phy_param2;
- u32 crport_data_in;
- u32 crport_data_out;
- u32 crport_cap_addr;
- u32 crport_cap_data;
- u32 crport_ack_read;
- u32 crport_ack_write;
-};
-check_member(usb_qc_phy, crport_ack_write, 0x50);
-
-static struct usb_qc_phy * const usb_host1_phy = (void *)USB_HOST1_PHY_BASE;
-static struct usb_qc_phy * const usb_host2_phy = (void *)USB_HOST2_PHY_BASE;
-
-struct usb_dwc3 {
- u32 sbuscfg0;
- u32 sbuscfg1;
- u32 txthrcfg;
- u32 rxthrcfg;
- u32 ctl;
- u32 evten;
- u32 sts;
- u8 reserved0[4];
- 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);
-
-static struct usb_dwc3 * const usb_host1_dwc3 = (void *)USB_HOST1_DWC3_BASE;
-static struct usb_dwc3 * const usb_host2_dwc3 = (void *)USB_HOST2_DWC3_BASE;
-
-static void setup_dwc3(struct usb_dwc3 *dwc3)
-{
- write32(&dwc3->usb3pipectl,
- 0x1 << 31 | /* assert PHY soft reset */
- 0x1 << 25 | /* (default) U1/U2 exit fail -> recovery? */
- 0x1 << 24 | /* (default) activate PHY low power states */
- 0x1 << 19 | /* (default) PHY low power delay value */
- 0x1 << 18 | /* (default) activate PHY low power delay */
- 0x1 << 1 | /* (default) Tx deemphasis value */
- 0x1 << 0); /* (default) elastic buffer mode */
-
- write32(&dwc3->usb2phycfg,
- 0x1 << 31 | /* assert PHY soft reset */
- 0x9 << 10 | /* (default) PHY clock turnaround 8-bit UTMI+ */
- 0x1 << 8 | /* (default) enable PHY sleep in L1 */
- 0x1 << 6); /* (default) enable PHY suspend */
-
- write32(&dwc3->ctl,
- 0x2 << 19 | /* (default) suspend clock scaling */
- 0x1 << 16 | /* retry SS three times before HS downgrade */
- 0x1 << 12 | /* port capability HOST */
- 0x1 << 11 | /* assert core soft reset */
- 0x1 << 10 | /* (default) sync ITP to refclk */
- 0x1 << 2); /* U2 exit after 8us LFPS (instead of 248ns) */
-
- write32(&dwc3->uctl,
- 0x32 << 22 | /* (default) reference clock period in ns */
- 0x1 << 15 | /* (default) XHCI compliant device addressing */
- 0x10 << 0); /* (default) devices time out after 32us */
-
- udelay(5);
-
- clrbits_le32(&dwc3->ctl, 0x1 << 11); /* deassert core soft reset */
- clrbits_le32(&dwc3->usb2phycfg, 0x1 << 31); /* PHY soft reset */
- clrbits_le32(&dwc3->usb3pipectl, 0x1 << 31); /* PHY soft reset */
-}
+/**
+ * USB Hardware registers
+ */
+#define PHY_CTRL0_ADDR 0x000
+#define PHY_CTRL1_ADDR 0x004
+#define PHY_CTRL2_ADDR 0x008
+#define PHY_CTRL3_ADDR 0x00C
+#define PHY_CTRL4_ADDR 0x010
+#define PHY_MISC_ADDR 0x024
+#define PHY_IPG_ADDR 0x030
+
+#define PHY_CTRL0_VAL 0xA4600015
+#define PHY_CTRL1_VAL 0x09500000
+#define PHY_CTRL2_VAL 0x00058180
+#define PHY_CTRL3_VAL 0x6DB6DCD6
+#define PHY_CTRL4_VAL 0x836DB6DB
+#define PHY_MISC_VAL 0x3803FB0C
+#define PHY_IPG_VAL 0x47323232
+
+#define USB_HOST3_PHY_BASE ((void *)0x8a00000)
+#define USB_HOST3_BALDUR_PHY_BASE ((void *)0xa6000)
+#define GCC_USB3_RST_CTRL ((void *)0x0181E038)
+
+#define DWC3_GCTL 0xc110
+#define DWC3_GUSB3PIPECTL(n) (0xc2c0 + (n * 0x04))
+#define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04))
+
+/* Global USB3 PIPE Control Register */
+#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17)
+#define DWC3_GCTL_CORESOFTRESET (1 << 11)
+#define DWC3_GCTL_PRTCAPDIR(n) ((n) << 12)
+#define DWC3_GCTL_PRTCAP_OTG 3
+#define DWC3_DCTL_CSFTRST (1 << 30)
+#define DWC3_GSNPSID 0xc120
+#define DWC3_DCTL 0xc704
+
+
+/* Global USB2 PHY Configuration Register */
+#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31)
+#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6)
+#define DWC3_GSNPSID_MASK 0xffff0000
+#define DWC3_GEVTEN 0xc114
+
+
+#define DWC3_GCTL_SCALEDOWN(n) ((n) << 4)
+#define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3)
+#define DWC3_GCTL_DISSCRAMBLE (1 << 3)
+#define DWC3_GCTL_DSBLCLKGTNG (1 << 0)
+#define DWC3_GCTL_U2RSTECN (1 << 16)
+#define DWC3_REVISION_190A 0x5533190a
+
+#define USB30_HS_PHY_CTRL 0x00000010
+#define SW_SESSVLD (0x01 << 0x1C)
+#define UTMI_OTG_VBUS_VALID (0x01 << 0x14)
+
+#define USB30_SS_PHY_CTRL 0x00000030
+#define LANE0_PWR_PRESENT (0x01 << 0x18)
+
+static void setup_dwc3(void);
-static void setup_phy(struct usb_qc_phy *phy)
+/**
+ * Write register.
+ *
+ * @base - PHY base virtual address.
+ * @offset - register offset.
+ * @val - value to write.
+ */
+static inline void qscratch_write(void *base, u32 offset, u32 val)
{
- write32(&phy->ss_phy_ctrl,
- 0x1 << 24 | /* Indicate VBUS power present */
- 0x1 << 8 | /* Enable USB3 ref clock to prescaler */
- 0x1 << 7 | /* assert SS PHY reset */
- 0x19 << 0); /* (default) reference clock multiplier */
-
- write32(&phy->hs_phy_ctrl,
- 0x1 << 26 | /* (default) unclamp DPSE/DMSE VLS */
- 0x1 << 25 | /* (default) select freeclk for utmi_clk */
- 0x1 << 24 | /* (default) unclamp DMSE VLS */
- 0x1 << 21 | /* (default) enable UTMI clock */
- 0x1 << 20 | /* set OTG VBUS as valid */
- 0x1 << 18 | /* use ref clock from core */
- 0x1 << 17 | /* (default) unclamp DPSE VLS */
- 0x1 << 11 | /* force xo/bias/pll to stay on in suspend */
- 0x1 << 9 | /* (default) unclamp IDHV */
- 0x1 << 8 | /* (default) unclamp VLS (again???) */
- 0x1 << 7 | /* (default) unclamp HV VLS */
- 0x7 << 4 | /* select frequency (no idea which one) */
- 0x1 << 1); /* (default) "retention enable" */
-
- write32(&phy->ss_phy_param1,
- 0x6e << 20 | /* full TX swing amplitude */
- 0x20 << 14 | /* (default) 6dB TX deemphasis */
- 0x17 << 8 | /* 3.5dB TX deemphasis */
- 0x9 << 3); /* (default) LoS detector level */
-
- write32(&phy->general_cfg, 0x1 << 2); /* set XHCI 1.00 compliance */
-
- udelay(5);
- clrbits_le32(&phy->ss_phy_ctrl, 0x1 << 7); /* deassert SS PHY reset */
+ write32(base + offset, val);
}
-static void crport_handshake(void *capture_reg, void *acknowledge_bit, u32 data)
+/**
+ * Write register and read back masked value to confirm it is written
+ *
+ * @base - base virtual address.
+ * @offset - register offset.
+ * @mask - register bitmask specifying what should be updated
+ * @val - value to write.
+ */
+static inline void qscratch_write_readback(void *base, u32 offset,
+ const u32 mask, u32 val)
{
- int usec = 100;
+ u32 write_val, tmp = read32(base + offset);
- if (capture_reg)
- write32(capture_reg, data);
+ tmp &= ~mask; /* retain other bits */
+ write_val = tmp | val;
- write32(acknowledge_bit, 0x1 << 0);
- while (read32(acknowledge_bit) && --usec)
- udelay(1);
+ write32(base + offset, write_val);
- if (!usec)
- printk(BIOS_ERR, "CRPORT handshake timed out (0x%08x)\n", data);
+ /* Read back to see if val was written */
+ tmp = read32(base + offset);
+ tmp &= mask; /* clear other bits */
+
+ if (tmp != val) {
+ printk(BIOS_INFO, "write: %x to QSCRATCH: %x FAILED\n",
+ val, offset);
+ }
}
-static void crport_write(struct usb_qc_phy *phy, u16 addr, u16 data)
+static void dwc3_ipq40xx_enable_vbus_valid(void)
{
- crport_handshake(&phy->crport_data_in, &phy->crport_cap_addr, addr);
- crport_handshake(&phy->crport_data_in, &phy->crport_cap_data, data);
- crport_handshake(NULL, &phy->crport_ack_write, 0);
+ /* Enable VBUS valid for HS PHY*/
+ qscratch_write_readback((void *)0x8af8800, USB30_HS_PHY_CTRL,
+ SW_SESSVLD, SW_SESSVLD);
+ qscratch_write_readback((void *)0x8af8800, USB30_HS_PHY_CTRL,
+ UTMI_OTG_VBUS_VALID, UTMI_OTG_VBUS_VALID);
+
+ /* Enable VBUS valid for SS PHY*/
+ qscratch_write_readback((void *)0x8af8800, USB30_SS_PHY_CTRL,
+ LANE0_PWR_PRESENT, LANE0_PWR_PRESENT);
}
-static void tune_phy(struct usb_qc_phy *phy)
+static void qcom_baldur_hs_phy_init(void)
{
- crport_write(phy, CRPORT_RX_OVRD_IN_HI,
- 0x1 << 11 | /* Set RX_EQ override? */
- 0x4 << 8 | /* Set RX_EQ to 4? */
- 0x1 << 7); /* Enable RX_EQ override */
- crport_write(phy, CRPORT_TX_OVRD_DRV_LO,
- 0x1 << 14 | /* Enable amplitude (override?) */
- 0x17 << 7 | /* Set TX deemphasis to 23 */
- 0x6e << 0); /* Set amplitude to 110 */
- crport_write(phy, CRPORT_TX_ALT_BLOCK,
- 0x1 << 7); /* ALT block? ("partial RX reset") */
+ u32 reg;
+
+ /* assert HS PHY POR reset */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg | 0x10;
+ write32(GCC_USB3_RST_CTRL, reg);
+ mdelay(10);
+
+ /* assert HS PHY SRIF reset */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg | 0x4;
+ write32(GCC_USB3_RST_CTRL, reg);
+ mdelay(10);
+
+ /* deassert HS PHY SRIF reset and program HS PHY registers */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg & ~0x4;
+ write32(GCC_USB3_RST_CTRL, reg);
+
+ mdelay(10);
+
+ /* perform PHY register writes */
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_CTRL0_ADDR, PHY_CTRL0_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_CTRL1_ADDR, PHY_CTRL1_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_CTRL2_ADDR, PHY_CTRL2_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_CTRL3_ADDR, PHY_CTRL3_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_CTRL4_ADDR, PHY_CTRL4_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_MISC_ADDR, PHY_MISC_VAL);
+ write32(USB_HOST3_BALDUR_PHY_BASE + PHY_IPG_ADDR, PHY_IPG_VAL);
+
+ mdelay(10);
+
+ /* de-assert USB3 HS PHY POR reset */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg & ~0x10;
+ write32(GCC_USB3_RST_CTRL, reg);
}
-void setup_usb_host1(void)
+static void qcom_uni_ss_phy_init(void)
+{
+ u32 reg;
+
+ /* assert SS PHY POR reset */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg | 0x20;
+ write32(GCC_USB3_RST_CTRL, reg);
+
+ mdelay(100);
+
+ /* deassert SS PHY POR reset */
+ reg = read32(GCC_USB3_RST_CTRL);
+ reg = reg & ~0x20;
+ write32(GCC_USB3_RST_CTRL, reg);
+}
+
+void setup_dwc3(void)
{
- printk(BIOS_INFO, "Setting up USB HOST1 controller...\n");
- setbits_le32(tcsr_usb_sel, 1 << 0); /* Select DWC3 controller */
- setup_phy(usb_host1_phy);
- setup_dwc3(usb_host1_dwc3);
- tune_phy(usb_host1_phy);
+ u32 reg;
+ u32 revision;
+
+ revision = read32(USB_HOST3_PHY_BASE + DWC3_GSNPSID);
+ /* This should read as U3 followed by revision number */
+ if ((revision & DWC3_GSNPSID_MASK) != 0x55330000)
+ printk(BIOS_INFO, "Error in reading Version\n");
+
+ printk(BIOS_INFO, "Version = %x\n", revision);
+
+ /* issue device SoftReset too */
+ write32(USB_HOST3_PHY_BASE + DWC3_DCTL, DWC3_DCTL_CSFTRST);
+ do {
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_DCTL);
+ if (!(reg & DWC3_DCTL_CSFTRST))
+ break;
+
+ udelay(10);
+ } while (true);
+ printk(BIOS_INFO, "software reset done\n");
+
+ /* Before Resetting PHY, put Core in Reset */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GCTL);
+ reg |= DWC3_GCTL_CORESOFTRESET;
+ write32(USB_HOST3_PHY_BASE + DWC3_GCTL, reg);
+
+ /* Assert USB3 PHY reset */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0));
+ reg |= DWC3_GUSB3PIPECTL_PHYSOFTRST;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0), reg);
+
+ /* Assert USB2 PHY reset */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0));
+ reg |= DWC3_GUSB2PHYCFG_PHYSOFTRST;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0), reg);
+
+ qcom_baldur_hs_phy_init();
+ qcom_uni_ss_phy_init();
+ mdelay(100);
+
+ /* Clear USB3 PHY reset */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0));
+ reg &= ~DWC3_GUSB3PIPECTL_PHYSOFTRST;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0), reg);
+
+ /* Clear USB2 PHY reset */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0));
+ reg &= ~DWC3_GUSB2PHYCFG_PHYSOFTRST;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0), reg);
+
+ mdelay(100);
+
+ /* After PHYs are stable we can take Core out of reset state */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GCTL);
+ reg &= ~DWC3_GCTL_CORESOFTRESET;
+ write32(USB_HOST3_PHY_BASE + DWC3_GCTL, reg);
+
+#if 0
+ /* Enable Suspend USB2.0 HS/FS/LS PHY (SusPHY) */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0));
+ reg |= DWC3_GUSB2PHYCFG_SUSPHY;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB2PHYCFG(0), reg);
+
+ /* Enable Suspend USB3.0 SS PHY (Suspend_en) */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0));
+ reg |= DWC3_GUSB3PIPECTL_SUSPHY;
+ write32(USB_HOST3_PHY_BASE + DWC3_GUSB3PIPECTL(0), reg);
+#endif
+
+ /* configure controller in Host mode */
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GCTL);
+ reg &= ~(DWC3_GCTL_PRTCAPDIR(DWC3_GCTL_PRTCAP_OTG));
+ reg |= DWC3_GCTL_PRTCAPDIR(0x1); /* host mode */
+ write32(USB_HOST3_PHY_BASE + DWC3_GCTL, reg);
+ printk(BIOS_INFO, "USB Host mode reg = %x\n", reg);
+
+ reg = read32(USB_HOST3_PHY_BASE + DWC3_GCTL);
+ reg &= ~DWC3_GCTL_SCALEDOWN_MASK;
+ reg &= ~DWC3_GCTL_DISSCRAMBLE;
+
+ reg &= ~DWC3_GCTL_DSBLCLKGTNG;
+ /*
+ * WORKAROUND: DWC3 revisions <1.90a have a bug
+ * where the device can fail to connect at SuperSpeed
+ * and falls back to high-speed mode which causes
+ * the device to enter a Connect/Disconnect loop
+ */
+ if (revision < DWC3_REVISION_190A)
+ reg |= DWC3_GCTL_U2RSTECN;
+
+ write32(USB_HOST3_PHY_BASE + DWC3_GCTL, reg);
}
-void setup_usb_host2(void)
+void setup_usb_host1(void)
{
- printk(BIOS_INFO, "Setting up USB HOST2 controller...\n");
- setbits_le32(tcsr_usb_sel, 1 << 1); /* Select DWC3 controller */
- setup_phy(usb_host2_phy);
- setup_dwc3(usb_host2_dwc3);
- tune_phy(usb_host2_phy);
+ printk(BIOS_INFO, "Setting up USB HOST1 controller.\n");
+ setup_dwc3();
+ dwc3_ipq40xx_enable_vbus_valid();
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-07 13:52:31 +0000