diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/host/ohci-sunxi.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/usb/host/ohci-sunxi.c b/drivers/usb/host/ohci-sunxi.c index 0ddbdbe4609..bb3c2475df9 100644 --- a/drivers/usb/host/ohci-sunxi.c +++ b/drivers/usb/host/ohci-sunxi.c @@ -44,6 +44,8 @@ struct ohci_sunxi_priv { const struct ohci_sunxi_cfg *cfg; }; +static fdt_addr_t last_ohci_addr = 0; + static int ohci_usb_probe(struct udevice *dev) { struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev); @@ -53,6 +55,9 @@ static int ohci_usb_probe(struct udevice *dev) u8 reg_mask = 0; int phys, ret; + if ((fdt_addr_t)regs > last_ohci_addr) + last_ohci_addr = (fdt_addr_t)regs; + priv->cfg = (const struct ohci_sunxi_cfg *)dev_get_driver_data(dev); priv->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE; if (IS_ERR(priv->ccm)) @@ -114,6 +119,7 @@ no_phy: static int ohci_usb_remove(struct udevice *dev) { struct ohci_sunxi_priv *priv = dev_get_priv(dev); + fdt_addr_t base_addr = devfdt_get_addr(dev); int ret; if (generic_phy_valid(&priv->phy)) { @@ -130,7 +136,18 @@ static int ohci_usb_remove(struct udevice *dev) if (priv->cfg->has_reset) clrbits_le32(priv->reset0_cfg, priv->ahb_gate_mask); - clrbits_le32(&priv->ccm->usb_clk_cfg, priv->usb_gate_mask); + /* + * On the A64 CLK_USB_OHCI0 is the parent of CLK_USB_OHCI1, so + * we have to wait with bringing down any clock until the last + * OHCI controller is removed. + */ + if (!priv->cfg->extra_usb_gate_mask || base_addr == last_ohci_addr) { + u32 usb_gate_mask = priv->usb_gate_mask; + + usb_gate_mask |= priv->cfg->extra_usb_gate_mask; + clrbits_le32(&priv->ccm->usb_clk_cfg, usb_gate_mask); + } + clrbits_le32(&priv->ccm->ahb_gate0, priv->ahb_gate_mask); return 0; |