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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2016 Freescale Semiconductor, Inc.
4 * Copyright 2017~2018 NXP
5 *
6 * Author: Dong Aisheng <aisheng.dong@nxp.com>
7 *
8 */
9
10#include <dt-bindings/clock/imx7ulp-clock.h>
11#include <linux/clk-provider.h>
12#include <linux/err.h>
13#include <linux/init.h>
14#include <linux/io.h>
15#include <linux/of.h>
16#include <linux/of_address.h>
17#include <linux/platform_device.h>
18#include <linux/slab.h>
19
20#include "clk.h"
21
22static const char * const pll_pre_sels[] = { "sosc", "firc", };
23static const char * const spll_pfd_sels[] = { "spll_pfd0", "spll_pfd1", "spll_pfd2", "spll_pfd3", };
24static const char * const spll_sels[] = { "spll", "spll_pfd_sel", };
25static const char * const apll_pfd_sels[] = { "apll_pfd0", "apll_pfd1", "apll_pfd2", "apll_pfd3", };
26static const char * const apll_sels[] = { "apll", "apll_pfd_sel", };
27static const char * const scs_sels[] = { "dummy", "sosc", "sirc", "firc", "dummy", "apll_sel", "spll_sel", "dummy", };
28static const char * const ddr_sels[] = { "apll_pfd_sel", "dummy", "dummy", "dummy", };
29static const char * const nic_sels[] = { "firc", "ddr_clk", };
30static const char * const periph_plat_sels[] = { "dummy", "nic1_bus_clk", "nic1_clk", "ddr_clk", "apll_pfd2", "apll_pfd1", "apll_pfd0", "upll", };
31static const char * const periph_bus_sels[] = { "dummy", "sosc_bus_clk", "dummy", "firc_bus_clk", "rosc", "nic1_bus_clk", "nic1_clk", "spll_bus_clk", };
32static const char * const arm_sels[] = { "core", "dummy", "dummy", "hsrun_core", };
33
34/* used by sosc/sirc/firc/ddr/spll/apll dividers */
35static const struct clk_div_table ulp_div_table[] = {
36 { .val = 1, .div = 1, },
37 { .val = 2, .div = 2, },
38 { .val = 3, .div = 4, },
39 { .val = 4, .div = 8, },
40 { .val = 5, .div = 16, },
41 { .val = 6, .div = 32, },
42 { .val = 7, .div = 64, },
43 { /* sentinel */ },
44};
45
46static const int pcc2_uart_clk_ids[] __initconst = {
47 IMX7ULP_CLK_LPUART4,
48 IMX7ULP_CLK_LPUART5,
49};
50
51static const int pcc3_uart_clk_ids[] __initconst = {
52 IMX7ULP_CLK_LPUART6,
53 IMX7ULP_CLK_LPUART7,
54};
55
56static struct clk **pcc2_uart_clks[ARRAY_SIZE(pcc2_uart_clk_ids) + 1] __initdata;
57static struct clk **pcc3_uart_clks[ARRAY_SIZE(pcc3_uart_clk_ids) + 1] __initdata;
58
59static void __init imx7ulp_clk_scg1_init(struct device_node *np)
60{
61 struct clk_hw_onecell_data *clk_data;
62 struct clk_hw **hws;
63 void __iomem *base;
64
65 clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_SCG1_END),
66 GFP_KERNEL);
67 if (!clk_data)
68 return;
69
70 clk_data->num = IMX7ULP_CLK_SCG1_END;
71 hws = clk_data->hws;
72
73 hws[IMX7ULP_CLK_DUMMY] = imx_clk_hw_fixed("dummy", 0);
74
75 hws[IMX7ULP_CLK_ROSC] = imx_obtain_fixed_clk_hw(np, "rosc");
76 hws[IMX7ULP_CLK_SOSC] = imx_obtain_fixed_clk_hw(np, "sosc");
77 hws[IMX7ULP_CLK_SIRC] = imx_obtain_fixed_clk_hw(np, "sirc");
78 hws[IMX7ULP_CLK_FIRC] = imx_obtain_fixed_clk_hw(np, "firc");
79 hws[IMX7ULP_CLK_UPLL] = imx_obtain_fixed_clk_hw(np, "upll");
80
81 /* SCG1 */
82 base = of_iomap(np, 0);
83 WARN_ON(!base);
84
85 /* NOTE: xPLL config can't be changed when xPLL is enabled */
86 hws[IMX7ULP_CLK_APLL_PRE_SEL] = imx_clk_hw_mux_flags("apll_pre_sel", base + 0x508, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE);
87 hws[IMX7ULP_CLK_SPLL_PRE_SEL] = imx_clk_hw_mux_flags("spll_pre_sel", base + 0x608, 0, 1, pll_pre_sels, ARRAY_SIZE(pll_pre_sels), CLK_SET_PARENT_GATE);
88
89 /* name parent_name reg shift width flags */
90 hws[IMX7ULP_CLK_APLL_PRE_DIV] = imx_clk_hw_divider_flags("apll_pre_div", "apll_pre_sel", base + 0x508, 8, 3, CLK_SET_RATE_GATE);
91 hws[IMX7ULP_CLK_SPLL_PRE_DIV] = imx_clk_hw_divider_flags("spll_pre_div", "spll_pre_sel", base + 0x608, 8, 3, CLK_SET_RATE_GATE);
92
93 /* name parent_name base */
94 hws[IMX7ULP_CLK_APLL] = imx_clk_hw_pllv4("apll", "apll_pre_div", base + 0x500);
95 hws[IMX7ULP_CLK_SPLL] = imx_clk_hw_pllv4("spll", "spll_pre_div", base + 0x600);
96
97 /* APLL PFDs */
98 hws[IMX7ULP_CLK_APLL_PFD0] = imx_clk_hw_pfdv2("apll_pfd0", "apll", base + 0x50c, 0);
99 hws[IMX7ULP_CLK_APLL_PFD1] = imx_clk_hw_pfdv2("apll_pfd1", "apll", base + 0x50c, 1);
100 hws[IMX7ULP_CLK_APLL_PFD2] = imx_clk_hw_pfdv2("apll_pfd2", "apll", base + 0x50c, 2);
101 hws[IMX7ULP_CLK_APLL_PFD3] = imx_clk_hw_pfdv2("apll_pfd3", "apll", base + 0x50c, 3);
102
103 /* SPLL PFDs */
104 hws[IMX7ULP_CLK_SPLL_PFD0] = imx_clk_hw_pfdv2("spll_pfd0", "spll", base + 0x60C, 0);
105 hws[IMX7ULP_CLK_SPLL_PFD1] = imx_clk_hw_pfdv2("spll_pfd1", "spll", base + 0x60C, 1);
106 hws[IMX7ULP_CLK_SPLL_PFD2] = imx_clk_hw_pfdv2("spll_pfd2", "spll", base + 0x60C, 2);
107 hws[IMX7ULP_CLK_SPLL_PFD3] = imx_clk_hw_pfdv2("spll_pfd3", "spll", base + 0x60C, 3);
108
109 /* PLL Mux */
110 hws[IMX7ULP_CLK_APLL_PFD_SEL] = imx_clk_hw_mux_flags("apll_pfd_sel", base + 0x508, 14, 2, apll_pfd_sels, ARRAY_SIZE(apll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
111 hws[IMX7ULP_CLK_SPLL_PFD_SEL] = imx_clk_hw_mux_flags("spll_pfd_sel", base + 0x608, 14, 2, spll_pfd_sels, ARRAY_SIZE(spll_pfd_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
112 hws[IMX7ULP_CLK_APLL_SEL] = imx_clk_hw_mux_flags("apll_sel", base + 0x508, 1, 1, apll_sels, ARRAY_SIZE(apll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
113 hws[IMX7ULP_CLK_SPLL_SEL] = imx_clk_hw_mux_flags("spll_sel", base + 0x608, 1, 1, spll_sels, ARRAY_SIZE(spll_sels), CLK_SET_RATE_PARENT | CLK_SET_PARENT_GATE);
114
115 hws[IMX7ULP_CLK_SPLL_BUS_CLK] = imx_clk_hw_divider_gate("spll_bus_clk", "spll_sel", CLK_SET_RATE_GATE, base + 0x604, 8, 3, 0, ulp_div_table, &imx_ccm_lock);
116
117 /* scs/ddr/nic select different clock source requires that clock to be enabled first */
118 hws[IMX7ULP_CLK_SYS_SEL] = imx_clk_hw_mux2("scs_sel", base + 0x14, 24, 4, scs_sels, ARRAY_SIZE(scs_sels));
119 hws[IMX7ULP_CLK_HSRUN_SYS_SEL] = imx_clk_hw_mux2("hsrun_scs_sel", base + 0x1c, 24, 4, scs_sels, ARRAY_SIZE(scs_sels));
120 hws[IMX7ULP_CLK_NIC_SEL] = imx_clk_hw_mux2("nic_sel", base + 0x40, 28, 1, nic_sels, ARRAY_SIZE(nic_sels));
121 hws[IMX7ULP_CLK_DDR_SEL] = imx_clk_hw_mux_flags("ddr_sel", base + 0x30, 24, 2, ddr_sels, ARRAY_SIZE(ddr_sels), CLK_SET_RATE_PARENT | CLK_OPS_PARENT_ENABLE);
122
123 hws[IMX7ULP_CLK_CORE_DIV] = imx_clk_hw_divider_flags("divcore", "scs_sel", base + 0x14, 16, 4, CLK_SET_RATE_PARENT);
124 hws[IMX7ULP_CLK_CORE] = imx_clk_hw_cpu("core", "divcore", hws[IMX7ULP_CLK_CORE_DIV]->clk, hws[IMX7ULP_CLK_SYS_SEL]->clk, hws[IMX7ULP_CLK_SPLL_SEL]->clk, hws[IMX7ULP_CLK_FIRC]->clk);
125 hws[IMX7ULP_CLK_HSRUN_CORE_DIV] = imx_clk_hw_divider_flags("hsrun_divcore", "hsrun_scs_sel", base + 0x1c, 16, 4, CLK_SET_RATE_PARENT);
126 hws[IMX7ULP_CLK_HSRUN_CORE] = imx_clk_hw_cpu("hsrun_core", "hsrun_divcore", hws[IMX7ULP_CLK_HSRUN_CORE_DIV]->clk, hws[IMX7ULP_CLK_HSRUN_SYS_SEL]->clk, hws[IMX7ULP_CLK_SPLL_SEL]->clk, hws[IMX7ULP_CLK_FIRC]->clk);
127
128 hws[IMX7ULP_CLK_DDR_DIV] = imx_clk_hw_divider_gate("ddr_clk", "ddr_sel", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL, base + 0x30, 0, 3,
129 0, ulp_div_table, &imx_ccm_lock);
130
131 hws[IMX7ULP_CLK_NIC0_DIV] = imx_clk_hw_divider_flags("nic0_clk", "nic_sel", base + 0x40, 24, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
132 hws[IMX7ULP_CLK_NIC1_DIV] = imx_clk_hw_divider_flags("nic1_clk", "nic0_clk", base + 0x40, 16, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
133 hws[IMX7ULP_CLK_NIC1_BUS_DIV] = imx_clk_hw_divider_flags("nic1_bus_clk", "nic0_clk", base + 0x40, 4, 4, CLK_SET_RATE_PARENT | CLK_IS_CRITICAL);
134
135 hws[IMX7ULP_CLK_GPU_DIV] = imx_clk_hw_divider("gpu_clk", "nic0_clk", base + 0x40, 20, 4);
136
137 hws[IMX7ULP_CLK_SOSC_BUS_CLK] = imx_clk_hw_divider_gate("sosc_bus_clk", "sosc", 0, base + 0x104, 8, 3,
138 CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock);
139 hws[IMX7ULP_CLK_FIRC_BUS_CLK] = imx_clk_hw_divider_gate("firc_bus_clk", "firc", 0, base + 0x304, 8, 3,
140 CLK_DIVIDER_READ_ONLY, ulp_div_table, &imx_ccm_lock);
141
142 imx_check_clk_hws(hws, clk_data->num);
143
144 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
145}
146CLK_OF_DECLARE(imx7ulp_clk_scg1, "fsl,imx7ulp-scg1", imx7ulp_clk_scg1_init);
147
148static void __init imx7ulp_clk_pcc2_init(struct device_node *np)
149{
150 struct clk_hw_onecell_data *clk_data;
151 struct clk_hw **hws;
152 void __iomem *base;
153 int i;
154
155 clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_PCC2_END),
156 GFP_KERNEL);
157 if (!clk_data)
158 return;
159
160 clk_data->num = IMX7ULP_CLK_PCC2_END;
161 hws = clk_data->hws;
162
163 /* PCC2 */
164 base = of_iomap(np, 0);
165 WARN_ON(!base);
166
167 hws[IMX7ULP_CLK_DMA1] = imx_clk_hw_gate("dma1", "nic1_clk", base + 0x20, 30);
168 hws[IMX7ULP_CLK_RGPIO2P1] = imx_clk_hw_gate("rgpio2p1", "nic1_bus_clk", base + 0x3c, 30);
169 hws[IMX7ULP_CLK_DMA_MUX1] = imx_clk_hw_gate("dma_mux1", "nic1_bus_clk", base + 0x84, 30);
170 hws[IMX7ULP_CLK_CAAM] = imx_clk_hw_gate("caam", "nic1_clk", base + 0x90, 30);
171 hws[IMX7ULP_CLK_LPTPM4] = imx7ulp_clk_hw_composite("lptpm4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94);
172 hws[IMX7ULP_CLK_LPTPM5] = imx7ulp_clk_hw_composite("lptpm5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98);
173 hws[IMX7ULP_CLK_LPIT1] = imx7ulp_clk_hw_composite("lpit1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c);
174 hws[IMX7ULP_CLK_LPSPI2] = imx7ulp_clk_hw_composite("lpspi2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa4);
175 hws[IMX7ULP_CLK_LPSPI3] = imx7ulp_clk_hw_composite("lpspi3", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xa8);
176 hws[IMX7ULP_CLK_LPI2C4] = imx7ulp_clk_hw_composite("lpi2c4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xac);
177 hws[IMX7ULP_CLK_LPI2C5] = imx7ulp_clk_hw_composite("lpi2c5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb0);
178 hws[IMX7ULP_CLK_LPUART4] = imx7ulp_clk_hw_composite("lpuart4", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb4);
179 hws[IMX7ULP_CLK_LPUART5] = imx7ulp_clk_hw_composite("lpuart5", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xb8);
180 hws[IMX7ULP_CLK_FLEXIO1] = imx7ulp_clk_hw_composite("flexio1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0xc4);
181 hws[IMX7ULP_CLK_USB0] = imx7ulp_clk_hw_composite("usb0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xcc);
182 hws[IMX7ULP_CLK_USB1] = imx7ulp_clk_hw_composite("usb1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xd0);
183 hws[IMX7ULP_CLK_USB_PHY] = imx_clk_hw_gate("usb_phy", "nic1_bus_clk", base + 0xd4, 30);
184 hws[IMX7ULP_CLK_USDHC0] = imx7ulp_clk_hw_composite("usdhc0", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xdc);
185 hws[IMX7ULP_CLK_USDHC1] = imx7ulp_clk_hw_composite("usdhc1", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xe0);
186 hws[IMX7ULP_CLK_WDG1] = imx7ulp_clk_hw_composite("wdg1", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xf4);
187 hws[IMX7ULP_CLK_WDG2] = imx7ulp_clk_hw_composite("wdg2", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0x10c);
188
189 imx_check_clk_hws(hws, clk_data->num);
190
191 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
192
193 for (i = 0; i < ARRAY_SIZE(pcc2_uart_clk_ids); i++) {
194 int index = pcc2_uart_clk_ids[i];
195
196 pcc2_uart_clks[i] = &hws[index]->clk;
197 }
198
199 imx_register_uart_clocks(pcc2_uart_clks);
200}
201CLK_OF_DECLARE(imx7ulp_clk_pcc2, "fsl,imx7ulp-pcc2", imx7ulp_clk_pcc2_init);
202
203static void __init imx7ulp_clk_pcc3_init(struct device_node *np)
204{
205 struct clk_hw_onecell_data *clk_data;
206 struct clk_hw **hws;
207 void __iomem *base;
208 int i;
209
210 clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_PCC3_END),
211 GFP_KERNEL);
212 if (!clk_data)
213 return;
214
215 clk_data->num = IMX7ULP_CLK_PCC3_END;
216 hws = clk_data->hws;
217
218 /* PCC3 */
219 base = of_iomap(np, 0);
220 WARN_ON(!base);
221
222 hws[IMX7ULP_CLK_LPTPM6] = imx7ulp_clk_hw_composite("lptpm6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x84);
223 hws[IMX7ULP_CLK_LPTPM7] = imx7ulp_clk_hw_composite("lptpm7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x88);
224
225 hws[IMX7ULP_CLK_MMDC] = clk_hw_register_gate(NULL, "mmdc", "nic1_clk", CLK_SET_RATE_PARENT | CLK_IS_CRITICAL,
226 base + 0xac, 30, 0, &imx_ccm_lock);
227 hws[IMX7ULP_CLK_LPI2C6] = imx7ulp_clk_hw_composite("lpi2c6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x90);
228 hws[IMX7ULP_CLK_LPI2C7] = imx7ulp_clk_hw_composite("lpi2c7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x94);
229 hws[IMX7ULP_CLK_LPUART6] = imx7ulp_clk_hw_composite("lpuart6", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x98);
230 hws[IMX7ULP_CLK_LPUART7] = imx7ulp_clk_hw_composite("lpuart7", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, false, true, base + 0x9c);
231 hws[IMX7ULP_CLK_DSI] = imx7ulp_clk_hw_composite("dsi", periph_bus_sels, ARRAY_SIZE(periph_bus_sels), true, true, true, base + 0xa4);
232 hws[IMX7ULP_CLK_LCDIF] = imx7ulp_clk_hw_composite("lcdif", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, true, true, base + 0xa8);
233
234 hws[IMX7ULP_CLK_VIU] = imx_clk_hw_gate("viu", "nic1_clk", base + 0xa0, 30);
235 hws[IMX7ULP_CLK_PCTLC] = imx_clk_hw_gate("pctlc", "nic1_bus_clk", base + 0xb8, 30);
236 hws[IMX7ULP_CLK_PCTLD] = imx_clk_hw_gate("pctld", "nic1_bus_clk", base + 0xbc, 30);
237 hws[IMX7ULP_CLK_PCTLE] = imx_clk_hw_gate("pctle", "nic1_bus_clk", base + 0xc0, 30);
238 hws[IMX7ULP_CLK_PCTLF] = imx_clk_hw_gate("pctlf", "nic1_bus_clk", base + 0xc4, 30);
239
240 hws[IMX7ULP_CLK_GPU3D] = imx7ulp_clk_hw_composite("gpu3d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x140);
241 hws[IMX7ULP_CLK_GPU2D] = imx7ulp_clk_hw_composite("gpu2d", periph_plat_sels, ARRAY_SIZE(periph_plat_sels), true, false, true, base + 0x144);
242
243 imx_check_clk_hws(hws, clk_data->num);
244
245 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
246
247 for (i = 0; i < ARRAY_SIZE(pcc3_uart_clk_ids); i++) {
248 int index = pcc3_uart_clk_ids[i];
249
250 pcc3_uart_clks[i] = &hws[index]->clk;
251 }
252
253 imx_register_uart_clocks(pcc3_uart_clks);
254}
255CLK_OF_DECLARE(imx7ulp_clk_pcc3, "fsl,imx7ulp-pcc3", imx7ulp_clk_pcc3_init);
256
257static void __init imx7ulp_clk_smc1_init(struct device_node *np)
258{
259 struct clk_hw_onecell_data *clk_data;
260 struct clk_hw **hws;
261 void __iomem *base;
262
263 clk_data = kzalloc(struct_size(clk_data, hws, IMX7ULP_CLK_SMC1_END),
264 GFP_KERNEL);
265 if (!clk_data)
266 return;
267
268 clk_data->num = IMX7ULP_CLK_SMC1_END;
269 hws = clk_data->hws;
270
271 /* SMC1 */
272 base = of_iomap(np, 0);
273 WARN_ON(!base);
274
275 hws[IMX7ULP_CLK_ARM] = imx_clk_hw_mux_flags("arm", base + 0x10, 8, 2, arm_sels, ARRAY_SIZE(arm_sels), CLK_SET_RATE_PARENT);
276
277 imx_check_clk_hws(hws, clk_data->num);
278
279 of_clk_add_hw_provider(np, of_clk_hw_onecell_get, clk_data);
280}
281CLK_OF_DECLARE(imx7ulp_clk_smc1, "fsl,imx7ulp-smc1", imx7ulp_clk_smc1_init);