1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2018 Amarula Solutions.
4 * Author: Jagan Teki <jagan@amarulasolutions.com>
5 */
6
7 #include <common.h>
8 #include <clk-uclass.h>
9 #include <dm.h>
10 #include <errno.h>
11 #include <asm/arch/ccu.h>
12 #include <dt-bindings/clock/sun9i-a80-ccu.h>
13 #include <dt-bindings/reset/sun9i-a80-ccu.h>
14 #include <linux/bitops.h>
15
16 static const struct ccu_clk_gate a80_gates[] = {
17 [CLK_SPI0] = GATE(0x430, BIT(31)),
18 [CLK_SPI1] = GATE(0x434, BIT(31)),
19 [CLK_SPI2] = GATE(0x438, BIT(31)),
20 [CLK_SPI3] = GATE(0x43c, BIT(31)),
21
22 [CLK_BUS_MMC] = GATE(0x580, BIT(8)),
23 [CLK_BUS_SPI0] = GATE(0x580, BIT(20)),
24 [CLK_BUS_SPI1] = GATE(0x580, BIT(21)),
25 [CLK_BUS_SPI2] = GATE(0x580, BIT(22)),
26 [CLK_BUS_SPI3] = GATE(0x580, BIT(23)),
27
28 [CLK_BUS_UART0] = GATE(0x594, BIT(16)),
29 [CLK_BUS_UART1] = GATE(0x594, BIT(17)),
30 [CLK_BUS_UART2] = GATE(0x594, BIT(18)),
31 [CLK_BUS_UART3] = GATE(0x594, BIT(19)),
32 [CLK_BUS_UART4] = GATE(0x594, BIT(20)),
33 [CLK_BUS_UART5] = GATE(0x594, BIT(21)),
34 };
35
36 static const struct ccu_reset a80_resets[] = {
37 [RST_BUS_MMC] = RESET(0x5a0, BIT(8)),
38 [RST_BUS_SPI0] = RESET(0x5a0, BIT(20)),
39 [RST_BUS_SPI1] = RESET(0x5a0, BIT(21)),
40 [RST_BUS_SPI2] = RESET(0x5a0, BIT(22)),
41 [RST_BUS_SPI3] = RESET(0x5a0, BIT(23)),
42
43 [RST_BUS_UART0] = RESET(0x5b4, BIT(16)),
44 [RST_BUS_UART1] = RESET(0x5b4, BIT(17)),
45 [RST_BUS_UART2] = RESET(0x5b4, BIT(18)),
46 [RST_BUS_UART3] = RESET(0x5b4, BIT(19)),
47 [RST_BUS_UART4] = RESET(0x5b4, BIT(20)),
48 [RST_BUS_UART5] = RESET(0x5b4, BIT(21)),
49 };
50
51 static const struct ccu_clk_gate a80_mmc_gates[] = {
52 [0] = GATE(0x0, BIT(16)),
53 [1] = GATE(0x4, BIT(16)),
54 [2] = GATE(0x8, BIT(16)),
55 [3] = GATE(0xc, BIT(16)),
56 };
57
58 static const struct ccu_reset a80_mmc_resets[] = {
59 [0] = GATE(0x0, BIT(18)),
60 [1] = GATE(0x4, BIT(18)),
61 [2] = GATE(0x8, BIT(18)),
62 [3] = GATE(0xc, BIT(18)),
63 };
64
65 static const struct ccu_desc a80_ccu_desc = {
66 .gates = a80_gates,
67 .resets = a80_resets,
68 };
69
70 static const struct ccu_desc a80_mmc_clk_desc = {
71 .gates = a80_mmc_gates,
72 .resets = a80_mmc_resets,
73 };
74
a80_clk_bind(struct udevice * dev)75 static int a80_clk_bind(struct udevice *dev)
76 {
77 ulong count = ARRAY_SIZE(a80_resets);
78
79 if (device_is_compatible(dev, "allwinner,sun9i-a80-mmc-config-clk"))
80 count = ARRAY_SIZE(a80_mmc_resets);
81
82 return sunxi_reset_bind(dev, count);
83 }
84
85 static const struct udevice_id a80_ccu_ids[] = {
86 { .compatible = "allwinner,sun9i-a80-ccu",
87 .data = (ulong)&a80_ccu_desc },
88 { .compatible = "allwinner,sun9i-a80-mmc-config-clk",
89 .data = (ulong)&a80_mmc_clk_desc },
90 { }
91 };
92
93 U_BOOT_DRIVER(clk_sun9i_a80) = {
94 .name = "sun9i_a80_ccu",
95 .id = UCLASS_CLK,
96 .of_match = a80_ccu_ids,
97 .priv_auto = sizeof(struct ccu_priv),
98 .ops = &sunxi_clk_ops,
99 .probe = sunxi_clk_probe,
100 .bind = a80_clk_bind,
101 };
102