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path: root/drivers/phy/tegra/xusb-tegra186.c
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Diffstat (limited to 'drivers/phy/tegra/xusb-tegra186.c')
-rw-r--r--drivers/phy/tegra/xusb-tegra186.c64
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>");