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21#include <linux/clk/zynq.h>
22#include <linux/clk-provider.h>
23#include <linux/of.h>
24#include <linux/of_address.h>
25#include <linux/slab.h>
26#include <linux/string.h>
27#include <linux/io.h>
28
29static void __iomem *zynq_clkc_base;
30
31#define SLCR_ARMPLL_CTRL (zynq_clkc_base + 0x00)
32#define SLCR_DDRPLL_CTRL (zynq_clkc_base + 0x04)
33#define SLCR_IOPLL_CTRL (zynq_clkc_base + 0x08)
34#define SLCR_PLL_STATUS (zynq_clkc_base + 0x0c)
35#define SLCR_ARM_CLK_CTRL (zynq_clkc_base + 0x20)
36#define SLCR_DDR_CLK_CTRL (zynq_clkc_base + 0x24)
37#define SLCR_DCI_CLK_CTRL (zynq_clkc_base + 0x28)
38#define SLCR_APER_CLK_CTRL (zynq_clkc_base + 0x2c)
39#define SLCR_GEM0_CLK_CTRL (zynq_clkc_base + 0x40)
40#define SLCR_GEM1_CLK_CTRL (zynq_clkc_base + 0x44)
41#define SLCR_SMC_CLK_CTRL (zynq_clkc_base + 0x48)
42#define SLCR_LQSPI_CLK_CTRL (zynq_clkc_base + 0x4c)
43#define SLCR_SDIO_CLK_CTRL (zynq_clkc_base + 0x50)
44#define SLCR_UART_CLK_CTRL (zynq_clkc_base + 0x54)
45#define SLCR_SPI_CLK_CTRL (zynq_clkc_base + 0x58)
46#define SLCR_CAN_CLK_CTRL (zynq_clkc_base + 0x5c)
47#define SLCR_CAN_MIOCLK_CTRL (zynq_clkc_base + 0x60)
48#define SLCR_DBG_CLK_CTRL (zynq_clkc_base + 0x64)
49#define SLCR_PCAP_CLK_CTRL (zynq_clkc_base + 0x68)
50#define SLCR_FPGA0_CLK_CTRL (zynq_clkc_base + 0x70)
51#define SLCR_621_TRUE (zynq_clkc_base + 0xc4)
52#define SLCR_SWDT_CLK_SEL (zynq_clkc_base + 0x204)
53
54#define NUM_MIO_PINS 54
55
56#define DBG_CLK_CTRL_CLKACT_TRC BIT(0)
57#define DBG_CLK_CTRL_CPU_1XCLKACT BIT(1)
58
59enum zynq_clk {
60 armpll, ddrpll, iopll,
61 cpu_6or4x, cpu_3or2x, cpu_2x, cpu_1x,
62 ddr2x, ddr3x, dci,
63 lqspi, smc, pcap, gem0, gem1, fclk0, fclk1, fclk2, fclk3, can0, can1,
64 sdio0, sdio1, uart0, uart1, spi0, spi1, dma,
65 usb0_aper, usb1_aper, gem0_aper, gem1_aper,
66 sdio0_aper, sdio1_aper, spi0_aper, spi1_aper, can0_aper, can1_aper,
67 i2c0_aper, i2c1_aper, uart0_aper, uart1_aper, gpio_aper, lqspi_aper,
68 smc_aper, swdt, dbg_trc, dbg_apb, clk_max};
69
70static struct clk *ps_clk;
71static struct clk *clks[clk_max];
72static struct clk_onecell_data clk_data;
73
74static DEFINE_SPINLOCK(armpll_lock);
75static DEFINE_SPINLOCK(ddrpll_lock);
76static DEFINE_SPINLOCK(iopll_lock);
77static DEFINE_SPINLOCK(armclk_lock);
78static DEFINE_SPINLOCK(swdtclk_lock);
79static DEFINE_SPINLOCK(ddrclk_lock);
80static DEFINE_SPINLOCK(dciclk_lock);
81static DEFINE_SPINLOCK(gem0clk_lock);
82static DEFINE_SPINLOCK(gem1clk_lock);
83static DEFINE_SPINLOCK(canclk_lock);
84static DEFINE_SPINLOCK(canmioclk_lock);
85static DEFINE_SPINLOCK(dbgclk_lock);
86static DEFINE_SPINLOCK(aperclk_lock);
87
88static const char *armpll_parents[] __initconst = {"armpll_int", "ps_clk"};
89static const char *ddrpll_parents[] __initconst = {"ddrpll_int", "ps_clk"};
90static const char *iopll_parents[] __initconst = {"iopll_int", "ps_clk"};
91static const char *gem0_mux_parents[] __initconst = {"gem0_div1", "dummy_name"};
92static const char *gem1_mux_parents[] __initconst = {"gem1_div1", "dummy_name"};
93static const char *can0_mio_mux2_parents[] __initconst = {"can0_gate",
94 "can0_mio_mux"};
95static const char *can1_mio_mux2_parents[] __initconst = {"can1_gate",
96 "can1_mio_mux"};
97static const char *dbg_emio_mux_parents[] __initconst = {"dbg_div",
98 "dummy_name"};
99
100static const char *dbgtrc_emio_input_names[] __initconst = {"trace_emio_clk"};
101static const char *gem0_emio_input_names[] __initconst = {"gem0_emio_clk"};
102static const char *gem1_emio_input_names[] __initconst = {"gem1_emio_clk"};
103static const char *swdt_ext_clk_input_names[] __initconst = {"swdt_ext_clk"};
104
105static void __init zynq_clk_register_fclk(enum zynq_clk fclk,
106 const char *clk_name, void __iomem *fclk_ctrl_reg,
107 const char **parents, int enable)
108{
109 struct clk *clk;
110 u32 enable_reg;
111 char *mux_name;
112 char *div0_name;
113 char *div1_name;
114 spinlock_t *fclk_lock;
115 spinlock_t *fclk_gate_lock;
116 void __iomem *fclk_gate_reg = fclk_ctrl_reg + 8;
117
118 fclk_lock = kmalloc(sizeof(*fclk_lock), GFP_KERNEL);
119 if (!fclk_lock)
120 goto err;
121 fclk_gate_lock = kmalloc(sizeof(*fclk_gate_lock), GFP_KERNEL);
122 if (!fclk_gate_lock)
123 goto err_fclk_gate_lock;
124 spin_lock_init(fclk_lock);
125 spin_lock_init(fclk_gate_lock);
126
127 mux_name = kasprintf(GFP_KERNEL, "%s_mux", clk_name);
128 if (!mux_name)
129 goto err_mux_name;
130 div0_name = kasprintf(GFP_KERNEL, "%s_div0", clk_name);
131 if (!div0_name)
132 goto err_div0_name;
133 div1_name = kasprintf(GFP_KERNEL, "%s_div1", clk_name);
134 if (!div1_name)
135 goto err_div1_name;
136
137 clk = clk_register_mux(NULL, mux_name, parents, 4,
138 CLK_SET_RATE_NO_REPARENT, fclk_ctrl_reg, 4, 2, 0,
139 fclk_lock);
140
141 clk = clk_register_divider(NULL, div0_name, mux_name,
142 0, fclk_ctrl_reg, 8, 6, CLK_DIVIDER_ONE_BASED |
143 CLK_DIVIDER_ALLOW_ZERO, fclk_lock);
144
145 clk = clk_register_divider(NULL, div1_name, div0_name,
146 CLK_SET_RATE_PARENT, fclk_ctrl_reg, 20, 6,
147 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
148 fclk_lock);
149
150 clks[fclk] = clk_register_gate(NULL, clk_name,
151 div1_name, CLK_SET_RATE_PARENT, fclk_gate_reg,
152 0, CLK_GATE_SET_TO_DISABLE, fclk_gate_lock);
153 enable_reg = clk_readl(fclk_gate_reg) & 1;
154 if (enable && !enable_reg) {
155 if (clk_prepare_enable(clks[fclk]))
156 pr_warn("%s: FCLK%u enable failed\n", __func__,
157 fclk - fclk0);
158 }
159 kfree(mux_name);
160 kfree(div0_name);
161 kfree(div1_name);
162
163 return;
164
165err_div1_name:
166 kfree(div0_name);
167err_div0_name:
168 kfree(mux_name);
169err_mux_name:
170 kfree(fclk_gate_lock);
171err_fclk_gate_lock:
172 kfree(fclk_lock);
173err:
174 clks[fclk] = ERR_PTR(-ENOMEM);
175}
176
177static void __init zynq_clk_register_periph_clk(enum zynq_clk clk0,
178 enum zynq_clk clk1, const char *clk_name0,
179 const char *clk_name1, void __iomem *clk_ctrl,
180 const char **parents, unsigned int two_gates)
181{
182 struct clk *clk;
183 char *mux_name;
184 char *div_name;
185 spinlock_t *lock;
186
187 lock = kmalloc(sizeof(*lock), GFP_KERNEL);
188 if (!lock)
189 goto err;
190 spin_lock_init(lock);
191
192 mux_name = kasprintf(GFP_KERNEL, "%s_mux", clk_name0);
193 div_name = kasprintf(GFP_KERNEL, "%s_div", clk_name0);
194
195 clk = clk_register_mux(NULL, mux_name, parents, 4,
196 CLK_SET_RATE_NO_REPARENT, clk_ctrl, 4, 2, 0, lock);
197
198 clk = clk_register_divider(NULL, div_name, mux_name, 0, clk_ctrl, 8, 6,
199 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO, lock);
200
201 clks[clk0] = clk_register_gate(NULL, clk_name0, div_name,
202 CLK_SET_RATE_PARENT, clk_ctrl, 0, 0, lock);
203 if (two_gates)
204 clks[clk1] = clk_register_gate(NULL, clk_name1, div_name,
205 CLK_SET_RATE_PARENT, clk_ctrl, 1, 0, lock);
206
207 kfree(mux_name);
208 kfree(div_name);
209
210 return;
211
212err:
213 clks[clk0] = ERR_PTR(-ENOMEM);
214 if (two_gates)
215 clks[clk1] = ERR_PTR(-ENOMEM);
216}
217
218static void __init zynq_clk_setup(struct device_node *np)
219{
220 int i;
221 u32 tmp;
222 int ret;
223 struct clk *clk;
224 char *clk_name;
225 unsigned int fclk_enable = 0;
226 const char *clk_output_name[clk_max];
227 const char *cpu_parents[4];
228 const char *periph_parents[4];
229 const char *swdt_ext_clk_mux_parents[2];
230 const char *can_mio_mux_parents[NUM_MIO_PINS];
231 const char *dummy_nm = "dummy_name";
232
233 pr_info("Zynq clock init\n");
234
235
236 for (i = 0; i < clk_max; i++) {
237 if (of_property_read_string_index(np, "clock-output-names",
238 i, &clk_output_name[i])) {
239 pr_err("%s: clock output name not in DT\n", __func__);
240 BUG();
241 }
242 }
243 cpu_parents[0] = clk_output_name[armpll];
244 cpu_parents[1] = clk_output_name[armpll];
245 cpu_parents[2] = clk_output_name[ddrpll];
246 cpu_parents[3] = clk_output_name[iopll];
247 periph_parents[0] = clk_output_name[iopll];
248 periph_parents[1] = clk_output_name[iopll];
249 periph_parents[2] = clk_output_name[armpll];
250 periph_parents[3] = clk_output_name[ddrpll];
251
252 of_property_read_u32(np, "fclk-enable", &fclk_enable);
253
254
255 ret = of_property_read_u32(np, "ps-clk-frequency", &tmp);
256 if (ret) {
257 pr_warn("ps_clk frequency not specified, using 33 MHz.\n");
258 tmp = 33333333;
259 }
260 ps_clk = clk_register_fixed_rate(NULL, "ps_clk", NULL, CLK_IS_ROOT,
261 tmp);
262
263
264 clk = clk_register_zynq_pll("armpll_int", "ps_clk", SLCR_ARMPLL_CTRL,
265 SLCR_PLL_STATUS, 0, &armpll_lock);
266 clks[armpll] = clk_register_mux(NULL, clk_output_name[armpll],
267 armpll_parents, 2, CLK_SET_RATE_NO_REPARENT,
268 SLCR_ARMPLL_CTRL, 4, 1, 0, &armpll_lock);
269
270 clk = clk_register_zynq_pll("ddrpll_int", "ps_clk", SLCR_DDRPLL_CTRL,
271 SLCR_PLL_STATUS, 1, &ddrpll_lock);
272 clks[ddrpll] = clk_register_mux(NULL, clk_output_name[ddrpll],
273 ddrpll_parents, 2, CLK_SET_RATE_NO_REPARENT,
274 SLCR_DDRPLL_CTRL, 4, 1, 0, &ddrpll_lock);
275
276 clk = clk_register_zynq_pll("iopll_int", "ps_clk", SLCR_IOPLL_CTRL,
277 SLCR_PLL_STATUS, 2, &iopll_lock);
278 clks[iopll] = clk_register_mux(NULL, clk_output_name[iopll],
279 iopll_parents, 2, CLK_SET_RATE_NO_REPARENT,
280 SLCR_IOPLL_CTRL, 4, 1, 0, &iopll_lock);
281
282
283 tmp = clk_readl(SLCR_621_TRUE) & 1;
284 clk = clk_register_mux(NULL, "cpu_mux", cpu_parents, 4,
285 CLK_SET_RATE_NO_REPARENT, SLCR_ARM_CLK_CTRL, 4, 2, 0,
286 &armclk_lock);
287 clk = clk_register_divider(NULL, "cpu_div", "cpu_mux", 0,
288 SLCR_ARM_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
289 CLK_DIVIDER_ALLOW_ZERO, &armclk_lock);
290
291 clks[cpu_6or4x] = clk_register_gate(NULL, clk_output_name[cpu_6or4x],
292 "cpu_div", CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
293 SLCR_ARM_CLK_CTRL, 24, 0, &armclk_lock);
294
295 clk = clk_register_fixed_factor(NULL, "cpu_3or2x_div", "cpu_div", 0,
296 1, 2);
297 clks[cpu_3or2x] = clk_register_gate(NULL, clk_output_name[cpu_3or2x],
298 "cpu_3or2x_div", CLK_IGNORE_UNUSED,
299 SLCR_ARM_CLK_CTRL, 25, 0, &armclk_lock);
300
301 clk = clk_register_fixed_factor(NULL, "cpu_2x_div", "cpu_div", 0, 1,
302 2 + tmp);
303 clks[cpu_2x] = clk_register_gate(NULL, clk_output_name[cpu_2x],
304 "cpu_2x_div", CLK_IGNORE_UNUSED, SLCR_ARM_CLK_CTRL,
305 26, 0, &armclk_lock);
306 clk_prepare_enable(clks[cpu_2x]);
307
308 clk = clk_register_fixed_factor(NULL, "cpu_1x_div", "cpu_div", 0, 1,
309 4 + 2 * tmp);
310 clks[cpu_1x] = clk_register_gate(NULL, clk_output_name[cpu_1x],
311 "cpu_1x_div", CLK_IGNORE_UNUSED, SLCR_ARM_CLK_CTRL, 27,
312 0, &armclk_lock);
313
314
315 swdt_ext_clk_mux_parents[0] = clk_output_name[cpu_1x];
316 for (i = 0; i < ARRAY_SIZE(swdt_ext_clk_input_names); i++) {
317 int idx = of_property_match_string(np, "clock-names",
318 swdt_ext_clk_input_names[i]);
319 if (idx >= 0)
320 swdt_ext_clk_mux_parents[i + 1] =
321 of_clk_get_parent_name(np, idx);
322 else
323 swdt_ext_clk_mux_parents[i + 1] = dummy_nm;
324 }
325 clks[swdt] = clk_register_mux(NULL, clk_output_name[swdt],
326 swdt_ext_clk_mux_parents, 2, CLK_SET_RATE_PARENT |
327 CLK_SET_RATE_NO_REPARENT, SLCR_SWDT_CLK_SEL, 0, 1, 0,
328 &swdtclk_lock);
329
330
331 clk = clk_register_divider(NULL, "ddr2x_div", "ddrpll", 0,
332 SLCR_DDR_CLK_CTRL, 26, 6, CLK_DIVIDER_ONE_BASED |
333 CLK_DIVIDER_ALLOW_ZERO, &ddrclk_lock);
334 clks[ddr2x] = clk_register_gate(NULL, clk_output_name[ddr2x],
335 "ddr2x_div", 0, SLCR_DDR_CLK_CTRL, 1, 0, &ddrclk_lock);
336 clk_prepare_enable(clks[ddr2x]);
337 clk = clk_register_divider(NULL, "ddr3x_div", "ddrpll", 0,
338 SLCR_DDR_CLK_CTRL, 20, 6, CLK_DIVIDER_ONE_BASED |
339 CLK_DIVIDER_ALLOW_ZERO, &ddrclk_lock);
340 clks[ddr3x] = clk_register_gate(NULL, clk_output_name[ddr3x],
341 "ddr3x_div", 0, SLCR_DDR_CLK_CTRL, 0, 0, &ddrclk_lock);
342 clk_prepare_enable(clks[ddr3x]);
343
344 clk = clk_register_divider(NULL, "dci_div0", "ddrpll", 0,
345 SLCR_DCI_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
346 CLK_DIVIDER_ALLOW_ZERO, &dciclk_lock);
347 clk = clk_register_divider(NULL, "dci_div1", "dci_div0",
348 CLK_SET_RATE_PARENT, SLCR_DCI_CLK_CTRL, 20, 6,
349 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
350 &dciclk_lock);
351 clks[dci] = clk_register_gate(NULL, clk_output_name[dci], "dci_div1",
352 CLK_SET_RATE_PARENT, SLCR_DCI_CLK_CTRL, 0, 0,
353 &dciclk_lock);
354 clk_prepare_enable(clks[dci]);
355
356
357 for (i = fclk0; i <= fclk3; i++) {
358 int enable = !!(fclk_enable & BIT(i - fclk0));
359 zynq_clk_register_fclk(i, clk_output_name[i],
360 SLCR_FPGA0_CLK_CTRL + 0x10 * (i - fclk0),
361 periph_parents, enable);
362 }
363
364 zynq_clk_register_periph_clk(lqspi, 0, clk_output_name[lqspi], NULL,
365 SLCR_LQSPI_CLK_CTRL, periph_parents, 0);
366
367 zynq_clk_register_periph_clk(smc, 0, clk_output_name[smc], NULL,
368 SLCR_SMC_CLK_CTRL, periph_parents, 0);
369
370 zynq_clk_register_periph_clk(pcap, 0, clk_output_name[pcap], NULL,
371 SLCR_PCAP_CLK_CTRL, periph_parents, 0);
372
373 zynq_clk_register_periph_clk(sdio0, sdio1, clk_output_name[sdio0],
374 clk_output_name[sdio1], SLCR_SDIO_CLK_CTRL,
375 periph_parents, 1);
376
377 zynq_clk_register_periph_clk(uart0, uart1, clk_output_name[uart0],
378 clk_output_name[uart1], SLCR_UART_CLK_CTRL,
379 periph_parents, 1);
380
381 zynq_clk_register_periph_clk(spi0, spi1, clk_output_name[spi0],
382 clk_output_name[spi1], SLCR_SPI_CLK_CTRL,
383 periph_parents, 1);
384
385 for (i = 0; i < ARRAY_SIZE(gem0_emio_input_names); i++) {
386 int idx = of_property_match_string(np, "clock-names",
387 gem0_emio_input_names[i]);
388 if (idx >= 0)
389 gem0_mux_parents[i + 1] = of_clk_get_parent_name(np,
390 idx);
391 }
392 clk = clk_register_mux(NULL, "gem0_mux", periph_parents, 4,
393 CLK_SET_RATE_NO_REPARENT, SLCR_GEM0_CLK_CTRL, 4, 2, 0,
394 &gem0clk_lock);
395 clk = clk_register_divider(NULL, "gem0_div0", "gem0_mux", 0,
396 SLCR_GEM0_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
397 CLK_DIVIDER_ALLOW_ZERO, &gem0clk_lock);
398 clk = clk_register_divider(NULL, "gem0_div1", "gem0_div0",
399 CLK_SET_RATE_PARENT, SLCR_GEM0_CLK_CTRL, 20, 6,
400 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
401 &gem0clk_lock);
402 clk = clk_register_mux(NULL, "gem0_emio_mux", gem0_mux_parents, 2,
403 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
404 SLCR_GEM0_CLK_CTRL, 6, 1, 0,
405 &gem0clk_lock);
406 clks[gem0] = clk_register_gate(NULL, clk_output_name[gem0],
407 "gem0_emio_mux", CLK_SET_RATE_PARENT,
408 SLCR_GEM0_CLK_CTRL, 0, 0, &gem0clk_lock);
409
410 for (i = 0; i < ARRAY_SIZE(gem1_emio_input_names); i++) {
411 int idx = of_property_match_string(np, "clock-names",
412 gem1_emio_input_names[i]);
413 if (idx >= 0)
414 gem1_mux_parents[i + 1] = of_clk_get_parent_name(np,
415 idx);
416 }
417 clk = clk_register_mux(NULL, "gem1_mux", periph_parents, 4,
418 CLK_SET_RATE_NO_REPARENT, SLCR_GEM1_CLK_CTRL, 4, 2, 0,
419 &gem1clk_lock);
420 clk = clk_register_divider(NULL, "gem1_div0", "gem1_mux", 0,
421 SLCR_GEM1_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
422 CLK_DIVIDER_ALLOW_ZERO, &gem1clk_lock);
423 clk = clk_register_divider(NULL, "gem1_div1", "gem1_div0",
424 CLK_SET_RATE_PARENT, SLCR_GEM1_CLK_CTRL, 20, 6,
425 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
426 &gem1clk_lock);
427 clk = clk_register_mux(NULL, "gem1_emio_mux", gem1_mux_parents, 2,
428 CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
429 SLCR_GEM1_CLK_CTRL, 6, 1, 0,
430 &gem1clk_lock);
431 clks[gem1] = clk_register_gate(NULL, clk_output_name[gem1],
432 "gem1_emio_mux", CLK_SET_RATE_PARENT,
433 SLCR_GEM1_CLK_CTRL, 0, 0, &gem1clk_lock);
434
435 tmp = strlen("mio_clk_00x");
436 clk_name = kmalloc(tmp, GFP_KERNEL);
437 for (i = 0; i < NUM_MIO_PINS; i++) {
438 int idx;
439
440 snprintf(clk_name, tmp, "mio_clk_%2.2d", i);
441 idx = of_property_match_string(np, "clock-names", clk_name);
442 if (idx >= 0)
443 can_mio_mux_parents[i] = of_clk_get_parent_name(np,
444 idx);
445 else
446 can_mio_mux_parents[i] = dummy_nm;
447 }
448 kfree(clk_name);
449 clk = clk_register_mux(NULL, "can_mux", periph_parents, 4,
450 CLK_SET_RATE_NO_REPARENT, SLCR_CAN_CLK_CTRL, 4, 2, 0,
451 &canclk_lock);
452 clk = clk_register_divider(NULL, "can_div0", "can_mux", 0,
453 SLCR_CAN_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
454 CLK_DIVIDER_ALLOW_ZERO, &canclk_lock);
455 clk = clk_register_divider(NULL, "can_div1", "can_div0",
456 CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 20, 6,
457 CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
458 &canclk_lock);
459 clk = clk_register_gate(NULL, "can0_gate", "can_div1",
460 CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 0, 0,
461 &canclk_lock);
462 clk = clk_register_gate(NULL, "can1_gate", "can_div1",
463 CLK_SET_RATE_PARENT, SLCR_CAN_CLK_CTRL, 1, 0,
464 &canclk_lock);
465 clk = clk_register_mux(NULL, "can0_mio_mux",
466 can_mio_mux_parents, 54, CLK_SET_RATE_PARENT |
467 CLK_SET_RATE_NO_REPARENT, SLCR_CAN_MIOCLK_CTRL, 0, 6, 0,
468 &canmioclk_lock);
469 clk = clk_register_mux(NULL, "can1_mio_mux",
470 can_mio_mux_parents, 54, CLK_SET_RATE_PARENT |
471 CLK_SET_RATE_NO_REPARENT, SLCR_CAN_MIOCLK_CTRL, 16, 6,
472 0, &canmioclk_lock);
473 clks[can0] = clk_register_mux(NULL, clk_output_name[can0],
474 can0_mio_mux2_parents, 2, CLK_SET_RATE_PARENT |
475 CLK_SET_RATE_NO_REPARENT, SLCR_CAN_MIOCLK_CTRL, 6, 1, 0,
476 &canmioclk_lock);
477 clks[can1] = clk_register_mux(NULL, clk_output_name[can1],
478 can1_mio_mux2_parents, 2, CLK_SET_RATE_PARENT |
479 CLK_SET_RATE_NO_REPARENT, SLCR_CAN_MIOCLK_CTRL, 22, 1,
480 0, &canmioclk_lock);
481
482 for (i = 0; i < ARRAY_SIZE(dbgtrc_emio_input_names); i++) {
483 int idx = of_property_match_string(np, "clock-names",
484 dbgtrc_emio_input_names[i]);
485 if (idx >= 0)
486 dbg_emio_mux_parents[i + 1] = of_clk_get_parent_name(np,
487 idx);
488 }
489 clk = clk_register_mux(NULL, "dbg_mux", periph_parents, 4,
490 CLK_SET_RATE_NO_REPARENT, SLCR_DBG_CLK_CTRL, 4, 2, 0,
491 &dbgclk_lock);
492 clk = clk_register_divider(NULL, "dbg_div", "dbg_mux", 0,
493 SLCR_DBG_CLK_CTRL, 8, 6, CLK_DIVIDER_ONE_BASED |
494 CLK_DIVIDER_ALLOW_ZERO, &dbgclk_lock);
495 clk = clk_register_mux(NULL, "dbg_emio_mux", dbg_emio_mux_parents, 2,
496 CLK_SET_RATE_NO_REPARENT, SLCR_DBG_CLK_CTRL, 6, 1, 0,
497 &dbgclk_lock);
498 clks[dbg_trc] = clk_register_gate(NULL, clk_output_name[dbg_trc],
499 "dbg_emio_mux", CLK_SET_RATE_PARENT, SLCR_DBG_CLK_CTRL,
500 0, 0, &dbgclk_lock);
501 clks[dbg_apb] = clk_register_gate(NULL, clk_output_name[dbg_apb],
502 clk_output_name[cpu_1x], 0, SLCR_DBG_CLK_CTRL, 1, 0,
503 &dbgclk_lock);
504
505
506 tmp = clk_readl(SLCR_DBG_CLK_CTRL);
507 if (tmp & DBG_CLK_CTRL_CLKACT_TRC)
508 if (clk_prepare_enable(clks[dbg_trc]))
509 pr_warn("%s: trace clk enable failed\n", __func__);
510 if (tmp & DBG_CLK_CTRL_CPU_1XCLKACT)
511 if (clk_prepare_enable(clks[dbg_apb]))
512 pr_warn("%s: debug APB clk enable failed\n", __func__);
513
514
515 clks[dma] = clk_register_gate(NULL, clk_output_name[dma],
516 clk_output_name[cpu_2x], 0, SLCR_APER_CLK_CTRL, 0, 0,
517 &aperclk_lock);
518 clks[usb0_aper] = clk_register_gate(NULL, clk_output_name[usb0_aper],
519 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 2, 0,
520 &aperclk_lock);
521 clks[usb1_aper] = clk_register_gate(NULL, clk_output_name[usb1_aper],
522 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 3, 0,
523 &aperclk_lock);
524 clks[gem0_aper] = clk_register_gate(NULL, clk_output_name[gem0_aper],
525 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 6, 0,
526 &aperclk_lock);
527 clks[gem1_aper] = clk_register_gate(NULL, clk_output_name[gem1_aper],
528 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 7, 0,
529 &aperclk_lock);
530 clks[sdio0_aper] = clk_register_gate(NULL, clk_output_name[sdio0_aper],
531 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 10, 0,
532 &aperclk_lock);
533 clks[sdio1_aper] = clk_register_gate(NULL, clk_output_name[sdio1_aper],
534 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 11, 0,
535 &aperclk_lock);
536 clks[spi0_aper] = clk_register_gate(NULL, clk_output_name[spi0_aper],
537 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 14, 0,
538 &aperclk_lock);
539 clks[spi1_aper] = clk_register_gate(NULL, clk_output_name[spi1_aper],
540 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 15, 0,
541 &aperclk_lock);
542 clks[can0_aper] = clk_register_gate(NULL, clk_output_name[can0_aper],
543 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 16, 0,
544 &aperclk_lock);
545 clks[can1_aper] = clk_register_gate(NULL, clk_output_name[can1_aper],
546 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 17, 0,
547 &aperclk_lock);
548 clks[i2c0_aper] = clk_register_gate(NULL, clk_output_name[i2c0_aper],
549 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 18, 0,
550 &aperclk_lock);
551 clks[i2c1_aper] = clk_register_gate(NULL, clk_output_name[i2c1_aper],
552 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 19, 0,
553 &aperclk_lock);
554 clks[uart0_aper] = clk_register_gate(NULL, clk_output_name[uart0_aper],
555 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 20, 0,
556 &aperclk_lock);
557 clks[uart1_aper] = clk_register_gate(NULL, clk_output_name[uart1_aper],
558 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 21, 0,
559 &aperclk_lock);
560 clks[gpio_aper] = clk_register_gate(NULL, clk_output_name[gpio_aper],
561 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 22, 0,
562 &aperclk_lock);
563 clks[lqspi_aper] = clk_register_gate(NULL, clk_output_name[lqspi_aper],
564 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 23, 0,
565 &aperclk_lock);
566 clks[smc_aper] = clk_register_gate(NULL, clk_output_name[smc_aper],
567 clk_output_name[cpu_1x], 0, SLCR_APER_CLK_CTRL, 24, 0,
568 &aperclk_lock);
569
570 for (i = 0; i < ARRAY_SIZE(clks); i++) {
571 if (IS_ERR(clks[i])) {
572 pr_err("Zynq clk %d: register failed with %ld\n",
573 i, PTR_ERR(clks[i]));
574 BUG();
575 }
576 }
577
578 clk_data.clks = clks;
579 clk_data.clk_num = ARRAY_SIZE(clks);
580 of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
581}
582
583CLK_OF_DECLARE(zynq_clkc, "xlnx,ps7-clkc", zynq_clk_setup);
584
585void __init zynq_clock_init(void)
586{
587 struct device_node *np;
588 struct device_node *slcr;
589 struct resource res;
590
591 np = of_find_compatible_node(NULL, NULL, "xlnx,ps7-clkc");
592 if (!np) {
593 pr_err("%s: clkc node not found\n", __func__);
594 goto np_err;
595 }
596
597 if (of_address_to_resource(np, 0, &res)) {
598 pr_err("%s: failed to get resource\n", np->name);
599 goto np_err;
600 }
601
602 slcr = of_get_parent(np);
603
604 if (slcr->data) {
605 zynq_clkc_base = (__force void __iomem *)slcr->data + res.start;
606 } else {
607 pr_err("%s: Unable to get I/O memory\n", np->name);
608 of_node_put(slcr);
609 goto np_err;
610 }
611
612 pr_info("%s: clkc starts at %p\n", __func__, zynq_clkc_base);
613
614 of_node_put(slcr);
615 of_node_put(np);
616
617 return;
618
619np_err:
620 of_node_put(np);
621 BUG();
622}
623
