19c92ab61SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 2439b65c4SChen-Yu Tsai /* 3439b65c4SChen-Yu Tsai * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved. 4439b65c4SChen-Yu Tsai */ 5439b65c4SChen-Yu Tsai 6439b65c4SChen-Yu Tsai #include <linux/clk.h> 7439b65c4SChen-Yu Tsai #include <linux/clk-provider.h> 8439b65c4SChen-Yu Tsai #include <linux/of_address.h> 9439b65c4SChen-Yu Tsai #include <linux/platform_device.h> 10439b65c4SChen-Yu Tsai 11439b65c4SChen-Yu Tsai #include "ccu_common.h" 12439b65c4SChen-Yu Tsai #include "ccu_gate.h" 13439b65c4SChen-Yu Tsai #include "ccu_reset.h" 14439b65c4SChen-Yu Tsai 15439b65c4SChen-Yu Tsai #include "ccu-sun9i-a80-usb.h" 16439b65c4SChen-Yu Tsai 174b889151SChen-Yu Tsai static const struct clk_parent_data clk_parent_hosc[] = { 184b889151SChen-Yu Tsai { .fw_name = "hosc" }, 194b889151SChen-Yu Tsai }; 20439b65c4SChen-Yu Tsai 214b889151SChen-Yu Tsai static const struct clk_parent_data clk_parent_bus[] = { 224b889151SChen-Yu Tsai { .fw_name = "bus" }, 234b889151SChen-Yu Tsai }; 244b889151SChen-Yu Tsai 254b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(bus_hci0_clk, "bus-hci0", clk_parent_bus, 0x0, BIT(1), 0); 264b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb_ohci0_clk, "usb-ohci0", clk_parent_hosc, 0x0, BIT(2), 0); 274b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(bus_hci1_clk, "bus-hci1", clk_parent_bus, 0x0, BIT(3), 0); 284b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(bus_hci2_clk, "bus-hci2", clk_parent_bus, 0x0, BIT(5), 0); 294b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb_ohci2_clk, "usb-ohci2", clk_parent_hosc, 0x0, BIT(6), 0); 304b889151SChen-Yu Tsai 314b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb0_phy_clk, "usb0-phy", clk_parent_hosc, 0x4, BIT(1), 0); 324b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb1_hsic_clk, "usb1-hsic", clk_parent_hosc, 0x4, BIT(2), 0); 334b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb1_phy_clk, "usb1-phy", clk_parent_hosc, 0x4, BIT(3), 0); 344b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb2_hsic_clk, "usb2-hsic", clk_parent_hosc, 0x4, BIT(4), 0); 354b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb2_phy_clk, "usb2-phy", clk_parent_hosc, 0x4, BIT(5), 0); 364b889151SChen-Yu Tsai static SUNXI_CCU_GATE_DATA(usb_hsic_clk, "usb-hsic", clk_parent_hosc, 0x4, BIT(10), 0); 37439b65c4SChen-Yu Tsai 38439b65c4SChen-Yu Tsai static struct ccu_common *sun9i_a80_usb_clks[] = { 39439b65c4SChen-Yu Tsai &bus_hci0_clk.common, 40439b65c4SChen-Yu Tsai &usb_ohci0_clk.common, 41439b65c4SChen-Yu Tsai &bus_hci1_clk.common, 42439b65c4SChen-Yu Tsai &bus_hci2_clk.common, 43439b65c4SChen-Yu Tsai &usb_ohci2_clk.common, 44439b65c4SChen-Yu Tsai 45439b65c4SChen-Yu Tsai &usb0_phy_clk.common, 46439b65c4SChen-Yu Tsai &usb1_hsic_clk.common, 47439b65c4SChen-Yu Tsai &usb1_phy_clk.common, 48439b65c4SChen-Yu Tsai &usb2_hsic_clk.common, 49439b65c4SChen-Yu Tsai &usb2_phy_clk.common, 50439b65c4SChen-Yu Tsai &usb_hsic_clk.common, 51439b65c4SChen-Yu Tsai }; 52439b65c4SChen-Yu Tsai 53439b65c4SChen-Yu Tsai static struct clk_hw_onecell_data sun9i_a80_usb_hw_clks = { 54439b65c4SChen-Yu Tsai .hws = { 55439b65c4SChen-Yu Tsai [CLK_BUS_HCI0] = &bus_hci0_clk.common.hw, 56439b65c4SChen-Yu Tsai [CLK_USB_OHCI0] = &usb_ohci0_clk.common.hw, 57439b65c4SChen-Yu Tsai [CLK_BUS_HCI1] = &bus_hci1_clk.common.hw, 58439b65c4SChen-Yu Tsai [CLK_BUS_HCI2] = &bus_hci2_clk.common.hw, 59439b65c4SChen-Yu Tsai [CLK_USB_OHCI2] = &usb_ohci2_clk.common.hw, 60439b65c4SChen-Yu Tsai 61439b65c4SChen-Yu Tsai [CLK_USB0_PHY] = &usb0_phy_clk.common.hw, 62439b65c4SChen-Yu Tsai [CLK_USB1_HSIC] = &usb1_hsic_clk.common.hw, 63439b65c4SChen-Yu Tsai [CLK_USB1_PHY] = &usb1_phy_clk.common.hw, 64439b65c4SChen-Yu Tsai [CLK_USB2_HSIC] = &usb2_hsic_clk.common.hw, 65439b65c4SChen-Yu Tsai [CLK_USB2_PHY] = &usb2_phy_clk.common.hw, 66439b65c4SChen-Yu Tsai [CLK_USB_HSIC] = &usb_hsic_clk.common.hw, 67439b65c4SChen-Yu Tsai }, 68439b65c4SChen-Yu Tsai .num = CLK_NUMBER, 69439b65c4SChen-Yu Tsai }; 70439b65c4SChen-Yu Tsai 71439b65c4SChen-Yu Tsai static struct ccu_reset_map sun9i_a80_usb_resets[] = { 72439b65c4SChen-Yu Tsai [RST_USB0_HCI] = { 0x0, BIT(17) }, 73439b65c4SChen-Yu Tsai [RST_USB1_HCI] = { 0x0, BIT(18) }, 74439b65c4SChen-Yu Tsai [RST_USB2_HCI] = { 0x0, BIT(19) }, 75439b65c4SChen-Yu Tsai 76439b65c4SChen-Yu Tsai [RST_USB0_PHY] = { 0x4, BIT(17) }, 77439b65c4SChen-Yu Tsai [RST_USB1_HSIC] = { 0x4, BIT(18) }, 78439b65c4SChen-Yu Tsai [RST_USB1_PHY] = { 0x4, BIT(19) }, 79439b65c4SChen-Yu Tsai [RST_USB2_HSIC] = { 0x4, BIT(20) }, 80439b65c4SChen-Yu Tsai [RST_USB2_PHY] = { 0x4, BIT(21) }, 81439b65c4SChen-Yu Tsai }; 82439b65c4SChen-Yu Tsai 83439b65c4SChen-Yu Tsai static const struct sunxi_ccu_desc sun9i_a80_usb_clk_desc = { 84439b65c4SChen-Yu Tsai .ccu_clks = sun9i_a80_usb_clks, 85439b65c4SChen-Yu Tsai .num_ccu_clks = ARRAY_SIZE(sun9i_a80_usb_clks), 86439b65c4SChen-Yu Tsai 87439b65c4SChen-Yu Tsai .hw_clks = &sun9i_a80_usb_hw_clks, 88439b65c4SChen-Yu Tsai 89439b65c4SChen-Yu Tsai .resets = sun9i_a80_usb_resets, 90439b65c4SChen-Yu Tsai .num_resets = ARRAY_SIZE(sun9i_a80_usb_resets), 91439b65c4SChen-Yu Tsai }; 92439b65c4SChen-Yu Tsai 93439b65c4SChen-Yu Tsai static int sun9i_a80_usb_clk_probe(struct platform_device *pdev) 94439b65c4SChen-Yu Tsai { 95439b65c4SChen-Yu Tsai struct clk *bus_clk; 96439b65c4SChen-Yu Tsai void __iomem *reg; 97439b65c4SChen-Yu Tsai int ret; 98439b65c4SChen-Yu Tsai 99*2dcfd031SCai Huoqing reg = devm_platform_ioremap_resource(pdev, 0); 100439b65c4SChen-Yu Tsai if (IS_ERR(reg)) 101439b65c4SChen-Yu Tsai return PTR_ERR(reg); 102439b65c4SChen-Yu Tsai 103439b65c4SChen-Yu Tsai bus_clk = devm_clk_get(&pdev->dev, "bus"); 104439b65c4SChen-Yu Tsai if (IS_ERR(bus_clk)) { 105439b65c4SChen-Yu Tsai ret = PTR_ERR(bus_clk); 106439b65c4SChen-Yu Tsai if (ret != -EPROBE_DEFER) 107439b65c4SChen-Yu Tsai dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret); 108439b65c4SChen-Yu Tsai return ret; 109439b65c4SChen-Yu Tsai } 110439b65c4SChen-Yu Tsai 111439b65c4SChen-Yu Tsai /* The bus clock needs to be enabled for us to access the registers */ 112439b65c4SChen-Yu Tsai ret = clk_prepare_enable(bus_clk); 113439b65c4SChen-Yu Tsai if (ret) { 114439b65c4SChen-Yu Tsai dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret); 115439b65c4SChen-Yu Tsai return ret; 116439b65c4SChen-Yu Tsai } 117439b65c4SChen-Yu Tsai 1189bec2b9cSSamuel Holland ret = devm_sunxi_ccu_probe(&pdev->dev, reg, &sun9i_a80_usb_clk_desc); 119439b65c4SChen-Yu Tsai if (ret) 120439b65c4SChen-Yu Tsai goto err_disable_clk; 121439b65c4SChen-Yu Tsai 122439b65c4SChen-Yu Tsai return 0; 123439b65c4SChen-Yu Tsai 124439b65c4SChen-Yu Tsai err_disable_clk: 125439b65c4SChen-Yu Tsai clk_disable_unprepare(bus_clk); 126439b65c4SChen-Yu Tsai return ret; 127439b65c4SChen-Yu Tsai } 128439b65c4SChen-Yu Tsai 129439b65c4SChen-Yu Tsai static const struct of_device_id sun9i_a80_usb_clk_ids[] = { 130439b65c4SChen-Yu Tsai { .compatible = "allwinner,sun9i-a80-usb-clks" }, 131439b65c4SChen-Yu Tsai { } 132439b65c4SChen-Yu Tsai }; 133439b65c4SChen-Yu Tsai 134439b65c4SChen-Yu Tsai static struct platform_driver sun9i_a80_usb_clk_driver = { 135439b65c4SChen-Yu Tsai .probe = sun9i_a80_usb_clk_probe, 136439b65c4SChen-Yu Tsai .driver = { 137439b65c4SChen-Yu Tsai .name = "sun9i-a80-usb-clks", 138439b65c4SChen-Yu Tsai .of_match_table = sun9i_a80_usb_clk_ids, 139439b65c4SChen-Yu Tsai }, 140439b65c4SChen-Yu Tsai }; 141439b65c4SChen-Yu Tsai builtin_platform_driver(sun9i_a80_usb_clk_driver); 142