diff --git a/drivers/usb/phy/phy-tegra-usb.c b/drivers/usb/phy/phy-tegra-usb.c index cec0855ed248..3ecd49871b88 100644 --- a/drivers/usb/phy/phy-tegra-usb.c +++ b/drivers/usb/phy/phy-tegra-usb.c @@ -184,27 +184,6 @@ static const struct tegra_xtal_freq tegra_freq_table[] = { }, }; -static struct tegra_utmip_config utmip_default[] = { - [0] = { - .hssync_start_delay = 9, - .idle_wait_delay = 17, - .elastic_limit = 16, - .term_range_adj = 6, - .xcvr_setup = 9, - .xcvr_lsfslew = 1, - .xcvr_lsrslew = 1, - }, - [2] = { - .hssync_start_delay = 9, - .idle_wait_delay = 17, - .elastic_limit = 16, - .term_range_adj = 6, - .xcvr_setup = 9, - .xcvr_lsfslew = 2, - .xcvr_lsrslew = 2, - }, -}; - static void set_pts(struct tegra_usb_phy *phy, u8 pts_val) { void __iomem *base = phy->regs; @@ -703,13 +682,6 @@ static int tegra_usb_phy_init(struct tegra_usb_phy *phy) int i; int err; - if (!phy->is_ulpi_phy) { - if (phy->is_legacy_phy) - phy->config = &utmip_default[0]; - else - phy->config = &utmip_default[2]; - } - phy->pll_u = devm_clk_get(phy->dev, "pll_u"); if (IS_ERR(phy->pll_u)) { pr_err("Can't get pll_u clock\n"); @@ -784,6 +756,88 @@ void tegra_ehci_phy_restore_end(struct usb_phy *x) } EXPORT_SYMBOL_GPL(tegra_ehci_phy_restore_end); +static int read_utmi_param(struct platform_device *pdev, const char *param, + u8 *dest) +{ + u32 value; + int err = of_property_read_u32(pdev->dev.of_node, param, &value); + *dest = (u8)value; + if (err < 0) + dev_err(&pdev->dev, "Failed to read USB UTMI parameter %s: %d\n", + param, err); + return err; +} + +static int utmi_phy_probe(struct tegra_usb_phy *tegra_phy, + struct platform_device *pdev) +{ + struct resource *res; + int err; + struct tegra_utmip_config *config; + + tegra_phy->is_ulpi_phy = false; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (!res) { + dev_err(&pdev->dev, "Failed to get UTMI Pad regs\n"); + return -ENXIO; + } + + tegra_phy->pad_regs = devm_ioremap(&pdev->dev, res->start, + resource_size(res)); + if (!tegra_phy->regs) { + dev_err(&pdev->dev, "Failed to remap UTMI Pad regs\n"); + return -ENOMEM; + } + + tegra_phy->config = devm_kzalloc(&pdev->dev, + sizeof(*tegra_phy->config), GFP_KERNEL); + if (!tegra_phy->config) { + dev_err(&pdev->dev, + "unable to allocate memory for USB UTMIP config\n"); + return -ENOMEM; + } + + config = tegra_phy->config; + + err = read_utmi_param(pdev, "nvidia,hssync-start-delay", + &config->hssync_start_delay); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,elastic-limit", + &config->elastic_limit); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,idle-wait-delay", + &config->idle_wait_delay); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,term-range-adj", + &config->term_range_adj); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,xcvr-setup", + &config->xcvr_setup); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,xcvr-lsfslew", + &config->xcvr_lsfslew); + if (err < 0) + return err; + + err = read_utmi_param(pdev, "nvidia,xcvr-lsrslew", + &config->xcvr_lsrslew); + if (err < 0) + return err; + + return 0; +} + static int tegra_usb_phy_probe(struct platform_device *pdev) { struct resource *res; @@ -815,20 +869,9 @@ static int tegra_usb_phy_probe(struct platform_device *pdev) err = of_property_match_string(np, "phy_type", "ulpi"); if (err < 0) { - tegra_phy->is_ulpi_phy = false; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res) { - dev_err(&pdev->dev, "Failed to get UTMI Pad regs\n"); - return -ENXIO; - } - - tegra_phy->pad_regs = devm_ioremap(&pdev->dev, res->start, - resource_size(res)); - if (!tegra_phy->regs) { - dev_err(&pdev->dev, "Failed to remap UTMI Pad regs\n"); - return -ENOMEM; - } + err = utmi_phy_probe(tegra_phy, pdev); + if (err < 0) + return err; } else { tegra_phy->is_ulpi_phy = true; @@ -839,6 +882,8 @@ static int tegra_usb_phy_probe(struct platform_device *pdev) tegra_phy->reset_gpio); return tegra_phy->reset_gpio; } + + tegra_phy->config = NULL; } err = of_property_match_string(np, "dr_mode", "otg");