1 // SPDX-License-Identifier: GPL-2.0+
5 * Copyright (C) 2015 Hans de Goede <hdegoede@redhat.com>
8 * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
12 #include <asm/arch/clock.h>
13 #include <asm/arch/usb_phy.h>
19 #ifdef CONFIG_SUNXI_GEN_SUN4I
20 #define BASE_DIST 0x8000
21 #define AHB_CLK_DIST 2
23 #define BASE_DIST 0x1000
24 #define AHB_CLK_DIST 1
27 struct ohci_sunxi_priv {
28 struct sunxi_ccm_reg *ccm;
30 int ahb_gate_mask; /* Mask of ahb_gate0 clk gate bits for this hcd */
31 int usb_gate_mask; /* Mask of usb_clk_cfg clk gate bits for this hcd */
32 int phy_index; /* Index of the usb-phy attached to this hcd */
35 static int ohci_usb_probe(struct udevice *dev)
37 struct usb_bus_priv *bus_priv = dev_get_uclass_priv(dev);
38 struct ohci_sunxi_priv *priv = dev_get_priv(dev);
39 struct ohci_regs *regs = (struct ohci_regs *)devfdt_get_addr(dev);
40 int extra_ahb_gate_mask = 0;
42 priv->ccm = (struct sunxi_ccm_reg *)SUNXI_CCM_BASE;
43 if (IS_ERR(priv->ccm))
44 return PTR_ERR(priv->ccm);
46 bus_priv->companion = true;
49 * This should go away once we've moved to the driver model for
52 priv->ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_OHCI0;
53 #ifdef CONFIG_MACH_SUN8I_H3
54 extra_ahb_gate_mask = 1 << AHB_GATE_OFFSET_USB_EHCI0;
56 priv->usb_gate_mask = CCM_USB_CTRL_OHCI0_CLK;
57 priv->phy_index = ((uintptr_t)regs - (SUNXI_USB1_BASE + 0x400)) / BASE_DIST;
58 priv->ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
59 extra_ahb_gate_mask <<= priv->phy_index * AHB_CLK_DIST;
60 priv->usb_gate_mask <<= priv->phy_index;
61 priv->phy_index++; /* Non otg phys start at 1 */
63 setbits_le32(&priv->ccm->ahb_gate0,
64 priv->ahb_gate_mask | extra_ahb_gate_mask);
65 setbits_le32(&priv->ccm->usb_clk_cfg, priv->usb_gate_mask);
66 #ifdef CONFIG_SUNXI_GEN_SUN6I
67 setbits_le32(&priv->ccm->ahb_reset0_cfg,
68 priv->ahb_gate_mask | extra_ahb_gate_mask);
71 sunxi_usb_phy_init(priv->phy_index);
72 sunxi_usb_phy_power_on(priv->phy_index);
74 return ohci_register(dev, regs);
77 static int ohci_usb_remove(struct udevice *dev)
79 struct ohci_sunxi_priv *priv = dev_get_priv(dev);
82 ret = ohci_deregister(dev);
86 sunxi_usb_phy_exit(priv->phy_index);
88 #ifdef CONFIG_SUNXI_GEN_SUN6I
89 clrbits_le32(&priv->ccm->ahb_reset0_cfg, priv->ahb_gate_mask);
91 clrbits_le32(&priv->ccm->usb_clk_cfg, priv->usb_gate_mask);
92 clrbits_le32(&priv->ccm->ahb_gate0, priv->ahb_gate_mask);
97 static const struct udevice_id ohci_usb_ids[] = {
98 { .compatible = "allwinner,sun4i-a10-ohci", },
99 { .compatible = "allwinner,sun5i-a13-ohci", },
100 { .compatible = "allwinner,sun6i-a31-ohci", },
101 { .compatible = "allwinner,sun7i-a20-ohci", },
102 { .compatible = "allwinner,sun8i-a23-ohci", },
103 { .compatible = "allwinner,sun8i-a83t-ohci", },
104 { .compatible = "allwinner,sun8i-h3-ohci", },
105 { .compatible = "allwinner,sun9i-a80-ohci", },
106 { .compatible = "allwinner,sun50i-a64-ohci", },
110 U_BOOT_DRIVER(usb_ohci) = {
111 .name = "ohci_sunxi",
113 .of_match = ohci_usb_ids,
114 .probe = ohci_usb_probe,
115 .remove = ohci_usb_remove,
116 .ops = &ohci_usb_ops,
117 .platdata_auto_alloc_size = sizeof(struct usb_platdata),
118 .priv_auto_alloc_size = sizeof(struct ohci_sunxi_priv),
119 .flags = DM_FLAG_ALLOC_PRIV_DMA,