diff options
Diffstat (limited to 'drivers/phy/allwinner')
| -rw-r--r-- | drivers/phy/allwinner/phy-sun4i-usb.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c index 3bea17b9405a..d259fdc6d7df 100644 --- a/drivers/phy/allwinner/phy-sun4i-usb.c +++ b/drivers/phy/allwinner/phy-sun4i-usb.c @@ -107,6 +107,7 @@ enum sun4i_usb_phy_type { struct sun4i_usb_phy_cfg { int num_phys; + int hsic_index; enum sun4i_usb_phy_type type; u32 disc_thresh; u8 phyctl_offset; @@ -126,6 +127,7 @@ struct sun4i_usb_phy_data { struct regulator *vbus; struct reset_control *reset; struct clk *clk; + struct clk *clk2; bool regulator_on; int index; } phys[MAX_PHYS]; @@ -261,8 +263,15 @@ static int sun4i_usb_phy_init(struct phy *_phy) if (ret) return ret; + ret = clk_prepare_enable(phy->clk2); + if (ret) { + clk_disable_unprepare(phy->clk); + return ret; + } + ret = reset_control_deassert(phy->reset); if (ret) { + clk_disable_unprepare(phy->clk2); clk_disable_unprepare(phy->clk); return ret; } @@ -315,6 +324,7 @@ static int sun4i_usb_phy_exit(struct phy *_phy) sun4i_usb_phy_passby(phy, 0); reset_control_assert(phy->reset); + clk_disable_unprepare(phy->clk2); clk_disable_unprepare(phy->clk); return 0; @@ -719,6 +729,17 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(phy->clk); } + /* The first PHY is always tied to OTG, and never HSIC */ + if (data->cfg->hsic_index && i == data->cfg->hsic_index) { + /* HSIC needs secondary clock */ + snprintf(name, sizeof(name), "usb%d_hsic_12M", i); + phy->clk2 = devm_clk_get(dev, name); + if (IS_ERR(phy->clk2)) { + dev_err(dev, "failed to get clock %s\n", name); + return PTR_ERR(phy->clk2); + } + } + snprintf(name, sizeof(name), "usb%d_reset", i); phy->reset = devm_reset_control_get(dev, name); if (IS_ERR(phy->reset)) { |