From: Vignesh R vigneshr@ti.com
Add support to handle USB3 PHYs present on AM57xx/DRA7xx SoCs. This is needed to move AM57xx to DM_USB.
Signed-off-by: Vignesh R vigneshr@ti.com
Signed-off-by: Jean-Jacques Hiblot jjhiblot@ti.com ---
Changes in v7: None Changes in v6: - ti-pipe3-phy: take PLL out of IDLE in pipe3_init(). The PLL may have been put into idle by pipe3_exit()
Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: - Add USB3 support to ti-pipe3-phy driver
drivers/phy/ti-pipe3-phy.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-)
diff --git a/drivers/phy/ti-pipe3-phy.c b/drivers/phy/ti-pipe3-phy.c index b22bbaf..e7e78e3 100644 --- a/drivers/phy/ti-pipe3-phy.c +++ b/drivers/phy/ti-pipe3-phy.c @@ -141,7 +141,7 @@ static int omap_pipe3_dpll_program(struct omap_pipe3 *pipe3) omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION1, val);
val = omap_pipe3_readl(pipe3->pll_ctrl_base, PLL_CONFIGURATION2); - val &= ~PLL_SELFREQDCO_MASK; + val &= ~(PLL_SELFREQDCO_MASK | PLL_IDLE); val |= dpll_params->freq << PLL_SELFREQDCO_SHIFT; omap_pipe3_writel(pipe3->pll_ctrl_base, PLL_CONFIGURATION2, val);
@@ -265,10 +265,13 @@ static int pipe3_exit(struct phy *phy) return -EBUSY; }
- val = readl(pipe3->pll_reset_reg); - writel(val | SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); - mdelay(1); - writel(val & ~SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); + if (pipe3->pll_reset_reg) { + val = readl(pipe3->pll_reset_reg); + writel(val | SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); + mdelay(1); + writel(val & ~SATA_PLL_SOFT_RESET, pipe3->pll_reset_reg); + } + return 0; }
@@ -331,9 +334,11 @@ static int pipe3_phy_probe(struct udevice *dev) if (!pipe3->power_reg) return -EINVAL;
- pipe3->pll_reset_reg = get_reg(dev, "syscon-pllreset"); - if (!pipe3->pll_reset_reg) - return -EINVAL; + if (device_is_compatible(dev, "ti,phy-pipe3-sata")) { + pipe3->pll_reset_reg = get_reg(dev, "syscon-pllreset"); + if (!pipe3->pll_reset_reg) + return -EINVAL; + }
pipe3->dpll_map = (struct pipe3_dpll_map *)dev_get_driver_data(dev);
@@ -350,8 +355,19 @@ static struct pipe3_dpll_map dpll_map_sata[] = { { }, /* Terminator */ };
+static struct pipe3_dpll_map dpll_map_usb[] = { + {12000000, {1250, 5, 4, 20, 0} }, /* 12 MHz */ + {16800000, {3125, 20, 4, 20, 0} }, /* 16.8 MHz */ + {19200000, {1172, 8, 4, 20, 65537} }, /* 19.2 MHz */ + {20000000, {1000, 7, 4, 10, 0} }, /* 20 MHz */ + {26000000, {1250, 12, 4, 20, 0} }, /* 26 MHz */ + {38400000, {3125, 47, 4, 20, 92843} }, /* 38.4 MHz */ + { }, /* Terminator */ +}; + static const struct udevice_id pipe3_phy_ids[] = { { .compatible = "ti,phy-pipe3-sata", .data = (ulong)&dpll_map_sata }, + { .compatible = "ti,omap-usb3", .data = (ulong)&dpll_map_usb}, { } };