diff options
Diffstat (limited to 'drivers/phy/tegra/xusb-tegra186.c')
| -rw-r--r-- | drivers/phy/tegra/xusb-tegra186.c | 64 |
1 files changed, 62 insertions, 2 deletions
diff --git a/drivers/phy/tegra/xusb-tegra186.c b/drivers/phy/tegra/xusb-tegra186.c index 6a8bd87cfdbd..1aae8535f452 100644 --- a/drivers/phy/tegra/xusb-tegra186.c +++ b/drivers/phy/tegra/xusb-tegra186.c @@ -89,6 +89,11 @@ #define USB2_TRK_START_TIMER(x) (((x) & 0x7f) << 12) #define USB2_TRK_DONE_RESET_TIMER(x) (((x) & 0x7f) << 19) #define USB2_PD_TRK BIT(26) +#define USB2_TRK_COMPLETED BIT(31) + +#define XUSB_PADCTL_USB2_BIAS_PAD_CTL2 0x28c +#define USB2_TRK_HW_MODE BIT(0) +#define CYA_TRK_CODE_UPDATE_ON_IDLE BIT(31) #define XUSB_PADCTL_HSIC_PADX_CTL0(x) (0x300 + (x) * 0x20) #define HSIC_PD_TX_DATA0 BIT(1) @@ -609,6 +614,32 @@ static void tegra186_utmi_bias_pad_power_on(struct tegra_xusb_padctl *padctl) value &= ~USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); + if (padctl->soc->poll_trk_completed) { + err = padctl_readl_poll(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1, + USB2_TRK_COMPLETED, USB2_TRK_COMPLETED, 100); + if (err) { + /* The failure with polling on trk complete will not + * cause the failure of powering on the bias pad. + */ + dev_warn(dev, "failed to poll USB2 trk completed: %d\n", err); + } + + value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); + value |= USB2_TRK_COMPLETED; + padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); + } else { + udelay(100); + } + + if (padctl->soc->trk_hw_mode) { + value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL2); + value |= USB2_TRK_HW_MODE; + value &= ~CYA_TRK_CODE_UPDATE_ON_IDLE; + padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL2); + } else { + clk_disable_unprepare(priv->usb2_trk_clk); + } + mutex_unlock(&padctl->lock); } @@ -633,7 +664,12 @@ static void tegra186_utmi_bias_pad_power_off(struct tegra_xusb_padctl *padctl) value |= USB2_PD_TRK; padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL1); - clk_disable_unprepare(priv->usb2_trk_clk); + if (padctl->soc->trk_hw_mode) { + value = padctl_readl(padctl, XUSB_PADCTL_USB2_BIAS_PAD_CTL2); + value &= ~USB2_TRK_HW_MODE; + padctl_writel(padctl, value, XUSB_PADCTL_USB2_BIAS_PAD_CTL2); + clk_disable_unprepare(priv->usb2_trk_clk); + } mutex_unlock(&padctl->lock); } @@ -1557,7 +1593,8 @@ const struct tegra_xusb_padctl_soc tegra186_xusb_padctl_soc = { EXPORT_SYMBOL_GPL(tegra186_xusb_padctl_soc); #endif -#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC) +#if IS_ENABLED(CONFIG_ARCH_TEGRA_194_SOC) || \ + IS_ENABLED(CONFIG_ARCH_TEGRA_234_SOC) static const char * const tegra194_xusb_padctl_supply_names[] = { "avdd-usb", "vclamp-usb", @@ -1613,8 +1650,31 @@ const struct tegra_xusb_padctl_soc tegra194_xusb_padctl_soc = { .supply_names = tegra194_xusb_padctl_supply_names, .num_supplies = ARRAY_SIZE(tegra194_xusb_padctl_supply_names), .supports_gen2 = true, + .poll_trk_completed = true, }; EXPORT_SYMBOL_GPL(tegra194_xusb_padctl_soc); + +const struct tegra_xusb_padctl_soc tegra234_xusb_padctl_soc = { + .num_pads = ARRAY_SIZE(tegra194_pads), + .pads = tegra194_pads, + .ports = { + .usb2 = { + .ops = &tegra186_usb2_port_ops, + .count = 4, + }, + .usb3 = { + .ops = &tegra186_usb3_port_ops, + .count = 4, + }, + }, + .ops = &tegra186_xusb_padctl_ops, + .supply_names = tegra194_xusb_padctl_supply_names, + .num_supplies = ARRAY_SIZE(tegra194_xusb_padctl_supply_names), + .supports_gen2 = true, + .poll_trk_completed = true, + .trk_hw_mode = true, +}; +EXPORT_SYMBOL_GPL(tegra234_xusb_padctl_soc); #endif MODULE_AUTHOR("JC Kuo <jckuo@nvidia.com>"); |