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https://github.com/brain-hackers/u-boot-brain
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99ba430870
Add common reset driver for all Allwinner SoC's. Since CLK and RESET share common DT compatible, it is CLK driver job is to bind the reset driver. So add CLK bind call on respective SoC driver by passing ccu map descriptor so-that reset deassert, deassert operations held based on ccu reset table defined from CLK driver. Select DM_RESET via CLK_SUNXI, this make hidden section of RESET since CLK and RESET share common DT compatible and code. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
67 lines
1.8 KiB
C
67 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Amarula Solutions.
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* Author: Jagan Teki <jagan@amarulasolutions.com>
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*/
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#include <common.h>
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#include <clk-uclass.h>
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#include <dm.h>
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#include <errno.h>
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#include <asm/arch/ccu.h>
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#include <dt-bindings/clock/sun50i-a64-ccu.h>
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#include <dt-bindings/reset/sun50i-a64-ccu.h>
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static const struct ccu_clk_gate a64_gates[] = {
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[CLK_BUS_OTG] = GATE(0x060, BIT(23)),
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[CLK_BUS_EHCI0] = GATE(0x060, BIT(24)),
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[CLK_BUS_EHCI1] = GATE(0x060, BIT(25)),
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[CLK_BUS_OHCI0] = GATE(0x060, BIT(28)),
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[CLK_BUS_OHCI1] = GATE(0x060, BIT(29)),
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[CLK_USB_PHY0] = GATE(0x0cc, BIT(8)),
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[CLK_USB_PHY1] = GATE(0x0cc, BIT(9)),
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[CLK_USB_HSIC] = GATE(0x0cc, BIT(10)),
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[CLK_USB_HSIC_12M] = GATE(0x0cc, BIT(11)),
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[CLK_USB_OHCI0] = GATE(0x0cc, BIT(16)),
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[CLK_USB_OHCI1] = GATE(0x0cc, BIT(17)),
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};
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static const struct ccu_reset a64_resets[] = {
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[RST_USB_PHY0] = RESET(0x0cc, BIT(0)),
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[RST_USB_PHY1] = RESET(0x0cc, BIT(1)),
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[RST_USB_HSIC] = RESET(0x0cc, BIT(2)),
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[RST_BUS_OTG] = RESET(0x2c0, BIT(23)),
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[RST_BUS_EHCI0] = RESET(0x2c0, BIT(24)),
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[RST_BUS_EHCI1] = RESET(0x2c0, BIT(25)),
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[RST_BUS_OHCI0] = RESET(0x2c0, BIT(28)),
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[RST_BUS_OHCI1] = RESET(0x2c0, BIT(29)),
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};
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static const struct ccu_desc a64_ccu_desc = {
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.gates = a64_gates,
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.resets = a64_resets,
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};
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static int a64_clk_bind(struct udevice *dev)
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{
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return sunxi_reset_bind(dev, ARRAY_SIZE(a64_resets));
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}
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static const struct udevice_id a64_ccu_ids[] = {
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{ .compatible = "allwinner,sun50i-a64-ccu",
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.data = (ulong)&a64_ccu_desc },
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{ }
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};
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U_BOOT_DRIVER(clk_sun50i_a64) = {
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.name = "sun50i_a64_ccu",
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.id = UCLASS_CLK,
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.of_match = a64_ccu_ids,
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.priv_auto_alloc_size = sizeof(struct ccu_priv),
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.ops = &sunxi_clk_ops,
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.probe = sunxi_clk_probe,
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.bind = a64_clk_bind,
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};
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