Add support for the USB clock controls found on the A80. Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx> --- .../devicetree/bindings/clock/sun9i-usb.txt | 24 ++++ drivers/clk/sunxi-ng/Makefile | 1 + drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c | 144 +++++++++++++++++++++ drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h | 25 ++++ include/dt-bindings/clock/sun9i-a80-usb.h | 59 +++++++++ include/dt-bindings/reset/sun9i-a80-usb.h | 56 ++++++++ 6 files changed, 309 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/sun9i-usb.txt create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c create mode 100644 drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h create mode 100644 include/dt-bindings/clock/sun9i-a80-usb.h create mode 100644 include/dt-bindings/reset/sun9i-a80-usb.h diff --git a/Documentation/devicetree/bindings/clock/sun9i-usb.txt b/Documentation/devicetree/bindings/clock/sun9i-usb.txt new file mode 100644 index 000000000000..c2d38626eaaa --- /dev/null +++ b/Documentation/devicetree/bindings/clock/sun9i-usb.txt @@ -0,0 +1,24 @@ +Allwinner A80 USB Clock Control Binding +------------------------------------ + +Required properties : +- compatible: must contain one of the following compatibles: + - "allwinner,sun9i-a80-usb-clocks" + +- reg: Must contain the registers base address and length +- clocks: phandle to the clocks feeding the USB subsystem. Two are needed: + - "bus": the bus clock for the whole USB subsystem + - "hosc": the high frequency oscillator (usually at 24MHz) +- clock-names: Must contain the clock names described just above +- #clock-cells : must contain 1 +- #reset-cells : must contain 1 + +Example: +usb_clocks: clock@00a08000 { + compatible = "allwinner,sun9i-a80-usb-clks"; + reg = <0x00a08000 0x8>; + clocks = <&ccu CLK_BUS_USB>, <&osc24M>; + clock-names = "bus", "hosc"; + #clock-cells = <1>; + #reset-cells = <1>; +}; diff --git a/drivers/clk/sunxi-ng/Makefile b/drivers/clk/sunxi-ng/Makefile index 126bb7c1c3f7..8f37ef7fb67d 100644 --- a/drivers/clk/sunxi-ng/Makefile +++ b/drivers/clk/sunxi-ng/Makefile @@ -26,3 +26,4 @@ obj-$(CONFIG_SUN8I_A33_CCU) += ccu-sun8i-a33.o obj-$(CONFIG_SUN8I_H3_CCU) += ccu-sun8i-h3.o obj-$(CONFIG_SUN8I_V3S_CCU) += ccu-sun8i-v3s.o obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80.o +obj-$(CONFIG_SUN9I_A80_CCU) += ccu-sun9i-a80-usb.o diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c new file mode 100644 index 000000000000..1d76f24f7df3 --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.c @@ -0,0 +1,144 @@ +/* + * Copyright (c) 2016 Chen-Yu Tsai. All rights reserved. + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/of_address.h> +#include <linux/platform_device.h> + +#include "ccu_common.h" +#include "ccu_gate.h" +#include "ccu_reset.h" + +#include "ccu-sun9i-a80-usb.h" + +static SUNXI_CCU_GATE(bus_hci0_clk, "bus-hci0", "bus-usb", 0x0, BIT(1), 0); +static SUNXI_CCU_GATE(usb_ohci0_clk, "usb-ohci0", "osc24M", 0x0, BIT(2), 0); +static SUNXI_CCU_GATE(bus_hci1_clk, "bus-hci1", "bus-usb", 0x0, BIT(3), 0); +static SUNXI_CCU_GATE(bus_hci2_clk, "bus-hci2", "bus-usb", 0x0, BIT(5), 0); +static SUNXI_CCU_GATE(usb_ohci2_clk, "usb-ohci2", "osc24M", 0x0, BIT(6), 0); + +static SUNXI_CCU_GATE(usb0_phy_clk, "usb0-phy", "osc24M", 0x4, BIT(1), 0); +static SUNXI_CCU_GATE(usb1_hsic_clk, "usb1-hsic", "osc24M", 0x4, BIT(2), 0); +static SUNXI_CCU_GATE(usb1_phy_clk, "usb1-phy", "osc24M", 0x4, BIT(3), 0); +static SUNXI_CCU_GATE(usb2_hsic_clk, "usb2-hsic", "osc24M", 0x4, BIT(4), 0); +static SUNXI_CCU_GATE(usb2_phy_clk, "usb2-phy", "osc24M", 0x4, BIT(5), 0); +static SUNXI_CCU_GATE(usb_hsic_clk, "usb-hsic", "osc24M", 0x4, BIT(10), 0); + +static struct ccu_common *sun9i_a80_usb_clks[] = { + &bus_hci0_clk.common, + &usb_ohci0_clk.common, + &bus_hci1_clk.common, + &bus_hci2_clk.common, + &usb_ohci2_clk.common, + + &usb0_phy_clk.common, + &usb1_hsic_clk.common, + &usb1_phy_clk.common, + &usb2_hsic_clk.common, + &usb2_phy_clk.common, + &usb_hsic_clk.common, +}; + +static struct clk_hw_onecell_data sun9i_a80_usb_hw_clks = { + .hws = { + [CLK_BUS_HCI0] = &bus_hci0_clk.common.hw, + [CLK_USB_OHCI0] = &usb_ohci0_clk.common.hw, + [CLK_BUS_HCI1] = &bus_hci1_clk.common.hw, + [CLK_BUS_HCI2] = &bus_hci2_clk.common.hw, + [CLK_USB_OHCI2] = &usb_ohci2_clk.common.hw, + + [CLK_USB0_PHY] = &usb0_phy_clk.common.hw, + [CLK_USB1_HSIC] = &usb1_hsic_clk.common.hw, + [CLK_USB1_PHY] = &usb1_phy_clk.common.hw, + [CLK_USB2_HSIC] = &usb2_hsic_clk.common.hw, + [CLK_USB2_PHY] = &usb2_phy_clk.common.hw, + [CLK_USB_HSIC] = &usb_hsic_clk.common.hw, + }, + .num = CLK_NUMBER, +}; + +static struct ccu_reset_map sun9i_a80_usb_resets[] = { + [RST_USB0_HCI] = { 0x0, BIT(17) }, + [RST_USB1_HCI] = { 0x0, BIT(18) }, + [RST_USB2_HCI] = { 0x0, BIT(19) }, + + [RST_USB0_PHY] = { 0x4, BIT(17) }, + [RST_USB1_HSIC] = { 0x4, BIT(18) }, + [RST_USB1_PHY] = { 0x4, BIT(19) }, + [RST_USB2_HSIC] = { 0x4, BIT(20) }, + [RST_USB2_PHY] = { 0x4, BIT(21) }, +}; + +static const struct sunxi_ccu_desc sun9i_a80_usb_clk_desc = { + .ccu_clks = sun9i_a80_usb_clks, + .num_ccu_clks = ARRAY_SIZE(sun9i_a80_usb_clks), + + .hw_clks = &sun9i_a80_usb_hw_clks, + + .resets = sun9i_a80_usb_resets, + .num_resets = ARRAY_SIZE(sun9i_a80_usb_resets), +}; + +static int sun9i_a80_usb_clk_probe(struct platform_device *pdev) +{ + struct resource *res; + struct clk *bus_clk; + void __iomem *reg; + int ret; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + reg = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(reg)) + return PTR_ERR(reg); + + bus_clk = devm_clk_get(&pdev->dev, "bus"); + if (IS_ERR(bus_clk)) { + ret = PTR_ERR(bus_clk); + if (ret != -EPROBE_DEFER) + dev_err(&pdev->dev, "Couldn't get bus clk: %d\n", ret); + return ret; + } + + /* The bus clock needs to be enabled for us to access the registers */ + ret = clk_prepare_enable(bus_clk); + if (ret) { + dev_err(&pdev->dev, "Couldn't enable bus clk: %d\n", ret); + return ret; + } + + ret = sunxi_ccu_probe(pdev->dev.of_node, reg, + &sun9i_a80_usb_clk_desc); + if (ret) + goto err_disable_clk; + + return 0; + +err_disable_clk: + clk_disable_unprepare(bus_clk); + return ret; +} + +static const struct of_device_id sun9i_a80_usb_clk_ids[] = { + { .compatible = "allwinner,sun9i-a80-usb-clks" }, + { } +}; + +static struct platform_driver sun9i_a80_usb_clk_driver = { + .probe = sun9i_a80_usb_clk_probe, + .driver = { + .name = "sun9i-a80-usb-clks", + .of_match_table = sun9i_a80_usb_clk_ids, + }, +}; +builtin_platform_driver(sun9i_a80_usb_clk_driver); diff --git a/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h new file mode 100644 index 000000000000..a184280ba854 --- /dev/null +++ b/drivers/clk/sunxi-ng/ccu-sun9i-a80-usb.h @@ -0,0 +1,25 @@ +/* + * Copyright 2016 Chen-Yu Tsai + * + * Chen-Yu Tsai <wens@xxxxxxxx> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef _CCU_SUN9I_A80_USB_H_ +#define _CCU_SUN9I_A80_USB_H_ + +#include <dt-bindings/clock/sun9i-a80-usb.h> +#include <dt-bindings/reset/sun9i-a80-usb.h> + +#define CLK_NUMBER (CLK_USB_HSIC + 1) + +#endif /* _CCU_SUN9I_A80_USB_H_ */ diff --git a/include/dt-bindings/clock/sun9i-a80-usb.h b/include/dt-bindings/clock/sun9i-a80-usb.h new file mode 100644 index 000000000000..783a60d2ccea --- /dev/null +++ b/include/dt-bindings/clock/sun9i-a80-usb.h @@ -0,0 +1,59 @@ +/* + * Copyright (C) 2016 Chen-Yu Tsai <wens@xxxxxxxx> + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef _DT_BINDINGS_CLOCK_SUN9I_A80_USB_H_ +#define _DT_BINDINGS_CLOCK_SUN9I_A80_USB_H_ + +#define CLK_BUS_HCI0 0 +#define CLK_USB_OHCI0 1 +#define CLK_BUS_HCI1 2 +#define CLK_BUS_HCI2 3 +#define CLK_USB_OHCI2 4 + +#define CLK_USB0_PHY 5 +#define CLK_USB1_HSIC 6 +#define CLK_USB1_PHY 7 +#define CLK_USB2_HSIC 8 +#define CLK_USB2_PHY 9 +#define CLK_USB_HSIC 10 + +#endif /* _DT_BINDINGS_CLOCK_SUN9I_A80_USB_H_ */ diff --git a/include/dt-bindings/reset/sun9i-a80-usb.h b/include/dt-bindings/reset/sun9i-a80-usb.h new file mode 100644 index 000000000000..ee492864c2aa --- /dev/null +++ b/include/dt-bindings/reset/sun9i-a80-usb.h @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2016 Chen-Yu Tsai <wens@xxxxxxxx> + * + * This file is dual-licensed: you can use it either under the terms + * of the GPL or the X11 license, at your option. Note that this dual + * licensing only applies to this file, and not this project as a + * whole. + * + * a) This file is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or (at your option) any later version. + * + * This file is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Or, alternatively, + * + * b) Permission is hereby granted, free of charge, to any person + * obtaining a copy of this software and associated documentation + * files (the "Software"), to deal in the Software without + * restriction, including without limitation the rights to use, + * copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following + * conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES + * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT + * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, + * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef _DT_BINDINGS_RESET_SUN9I_A80_USB_H_ +#define _DT_BINDINGS_RESET_SUN9I_A80_USB_H_ + +#define RST_USB0_HCI 0 +#define RST_USB1_HCI 1 +#define RST_USB2_HCI 2 + +#define RST_USB0_PHY 3 +#define RST_USB1_HSIC 4 +#define RST_USB1_PHY 5 +#define RST_USB2_HSIC 6 +#define RST_USB2_PHY 7 + +#endif /* _DT_BINDINGS_RESET_SUN9I_A80_USB_H_ */ -- 2.11.0 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html