diff options
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/phy-sun4i-usb.c | 50 |
1 files changed, 33 insertions, 17 deletions
diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index a650f283f6ff..f86a2574b953 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -49,12 +49,14 @@ #define REG_PHYBIST 0x08 #define REG_PHYTUNE 0x0c #define REG_PHYCTL_A33 0x10 -#define REG_PHY_UNK_H3 0x20 +#define REG_PHY_OTGCTL 0x20 #define REG_PMU_UNK1 0x10 #define PHYCTL_DATA BIT(7) +#define OTGCTL_ROUTE_MUSB BIT(0) + #define SUNXI_AHB_ICHR8_EN BIT(10) #define SUNXI_AHB_INCR4_BURST_EN BIT(9) #define SUNXI_AHB_INCRX_ALIGN_EN BIT(8) @@ -110,6 +112,7 @@ struct sun4i_usb_phy_cfg { u8 phyctl_offset; bool dedicated_clocks; bool enable_pmu_unk1; + bool phy0_dual_route; }; struct sun4i_usb_phy_data { @@ -269,23 +272,16 @@ static int sun4i_usb_phy_init(struct phy *_phy) writel(val & ~2, phy->pmu + REG_PMU_UNK1); } - if (data->cfg->type == sun8i_h3_phy) { - if (phy->index == 0) { - val = readl(data->base + REG_PHY_UNK_H3); - writel(val & ~1, data->base + REG_PHY_UNK_H3); - } - } else { - /* Enable USB 45 Ohm resistor calibration */ - if (phy->index == 0) - sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); + /* Enable USB 45 Ohm resistor calibration */ + if (phy->index == 0) + sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); - /* Adjust PHY's magnitude and rate */ - sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); + /* Adjust PHY's magnitude and rate */ + sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); - /* Disconnect threshold adjustment */ - sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, - data->cfg->disc_thresh, 2); - } + /* Disconnect threshold adjustment */ + sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, + data->cfg->disc_thresh, 2); sun4i_usb_phy_passby(phy, 1); @@ -484,6 +480,21 @@ static const struct phy_ops sun4i_usb_phy_ops = { .owner = THIS_MODULE, }; +static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data *data, int id_det) +{ + u32 regval; + + regval = readl(data->base + REG_PHY_OTGCTL); + if (id_det == 0) { + /* Host mode. Route phy0 to EHCI/OHCI */ + regval &= ~OTGCTL_ROUTE_MUSB; + } else { + /* Peripheral mode. Route phy0 to MUSB */ + regval |= OTGCTL_ROUTE_MUSB; + } + writel(regval, data->base + REG_PHY_OTGCTL); +} + static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) { struct sun4i_usb_phy_data *data = @@ -544,6 +555,10 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) sun4i_usb_phy0_set_vbus_detect(phy0, 1); mutex_unlock(&phy0->mutex); } + + /* Re-route PHY0 if necessary */ + if (data->cfg->phy0_dual_route) + sun4i_usb_phy0_reroute(data, id_det); } if (vbus_notify) @@ -698,7 +713,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(phy->reset); } - if (i) { /* No pmu for usbc0 */ + if (i || data->cfg->phy0_dual_route) { /* No pmu for musb */ snprintf(name, sizeof(name), "pmu%d", i); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); @@ -824,6 +839,7 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = { .phyctl_offset = REG_PHYCTL_A33, .dedicated_clocks = true, .enable_pmu_unk1 = true, + .phy0_dual_route = true, }; static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = { |