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
15 static const struct ccu_clk_gate a80_gates[] = {
16 [CLK_SPI0] = GATE(0x430, BIT(31)),
17 [CLK_SPI1] = GATE(0x434, BIT(31)),
18 [CLK_SPI2] = GATE(0x438, BIT(31)),
19 [CLK_SPI3] = GATE(0x43c, BIT(31)),
20
21 [CLK_BUS_MMC] = GATE(0x580, BIT(8)),
22 [CLK_BUS_SPI0] = GATE(0x580, BIT(20)),
23 [CLK_BUS_SPI1] = GATE(0x580, BIT(21)),
24 [CLK_BUS_SPI2] = GATE(0x580, BIT(22)),
25 [CLK_BUS_SPI3] = GATE(0x580, BIT(23)),
26
27 [CLK_BUS_UART0] = GATE(0x594, BIT(16)),
28 [CLK_BUS_UART1] = GATE(0x594, BIT(17)),
29 [CLK_BUS_UART2] = GATE(0x594, BIT(18)),
30 [CLK_BUS_UART3] = GATE(0x594, BIT(19)),
31 [CLK_BUS_UART4] = GATE(0x594, BIT(20)),
32 [CLK_BUS_UART5] = GATE(0x594, BIT(21)),
33 };
34
35 static const struct ccu_reset a80_resets[] = {
36 [RST_BUS_MMC] = RESET(0x5a0, BIT(8)),
37 [RST_BUS_SPI0] = RESET(0x5a0, BIT(20)),
38 [RST_BUS_SPI1] = RESET(0x5a0, BIT(21)),
39 [RST_BUS_SPI2] = RESET(0x5a0, BIT(22)),
40 [RST_BUS_SPI3] = RESET(0x5a0, BIT(23)),
41
42 [RST_BUS_UART0] = RESET(0x5b4, BIT(16)),
43 [RST_BUS_UART1] = RESET(0x5b4, BIT(17)),
44 [RST_BUS_UART2] = RESET(0x5b4, BIT(18)),
45 [RST_BUS_UART3] = RESET(0x5b4, BIT(19)),
46 [RST_BUS_UART4] = RESET(0x5b4, BIT(20)),
47 [RST_BUS_UART5] = RESET(0x5b4, BIT(21)),
48 };
49
50 static const struct ccu_clk_gate a80_mmc_gates[] = {
51 [0] = GATE(0x0, BIT(16)),
52 [1] = GATE(0x4, BIT(16)),
53 [2] = GATE(0x8, BIT(16)),
54 [3] = GATE(0xc, BIT(16)),
55 };
56
57 static const struct ccu_reset a80_mmc_resets[] = {
58 [0] = GATE(0x0, BIT(18)),
59 [1] = GATE(0x4, BIT(18)),
60 [2] = GATE(0x8, BIT(18)),
61 [3] = GATE(0xc, BIT(18)),
62 };
63
64 static const struct ccu_desc a80_ccu_desc = {
65 .gates = a80_gates,
66 .resets = a80_resets,
67 };
68
69 static const struct ccu_desc a80_mmc_clk_desc = {
70 .gates = a80_mmc_gates,
71 .resets = a80_mmc_resets,
72 };
73
a80_clk_bind(struct udevice * dev)74 static int a80_clk_bind(struct udevice *dev)
75 {
76 ulong count = ARRAY_SIZE(a80_resets);
77
78 if (device_is_compatible(dev, "allwinner,sun9i-a80-mmc-config-clk"))
79 count = ARRAY_SIZE(a80_mmc_resets);
80
81 return sunxi_reset_bind(dev, count);
82 }
83
84 static const struct udevice_id a80_ccu_ids[] = {
85 { .compatible = "allwinner,sun9i-a80-ccu",
86 .data = (ulong)&a80_ccu_desc },
87 { .compatible = "allwinner,sun9i-a80-mmc-config-clk",
88 .data = (ulong)&a80_mmc_clk_desc },
89 { }
90 };
91
92 U_BOOT_DRIVER(clk_sun9i_a80) = {
93 .name = "sun9i_a80_ccu",
94 .id = UCLASS_CLK,
95 .of_match = a80_ccu_ids,
96 .priv_auto_alloc_size = sizeof(struct ccu_priv),
97 .ops = &sunxi_clk_ops,
98 .probe = sunxi_clk_probe,
99 .bind = a80_clk_bind,
100 };
101