1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2016 Icenowy Zheng <icenowy@aosc.io>
7 #include <linux/clk-provider.h>
9 #include <linux/of_address.h>
11 #include "ccu_common.h"
12 #include "ccu_reset.h"
22 #include "ccu_phase.h"
24 #include "ccu-suniv-f1c100s.h"
26 static struct ccu_nkmp pll_cpu_clk
= {
30 .n
= _SUNXI_CCU_MULT(8, 5),
31 .k
= _SUNXI_CCU_MULT(4, 2),
32 .m
= _SUNXI_CCU_DIV(0, 2),
33 /* MAX is guessed by the BSP table */
34 .p
= _SUNXI_CCU_DIV_MAX(16, 2, 4),
38 .hw
.init
= CLK_HW_INIT("pll-cpu", "osc24M",
45 * The Audio PLL is supposed to have 4 outputs: 3 fixed factors from
46 * the base (2x, 4x and 8x), and one variable divider (the one true
49 * We don't have any need for the variable divider for now, so we just
50 * hardcode it to match with the clock names
52 #define SUNIV_PLL_AUDIO_REG 0x008
54 static SUNXI_CCU_NM_WITH_GATE_LOCK(pll_audio_base_clk
, "pll-audio-base",
62 static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_video_clk
, "pll-video",
66 BIT(24), /* frac enable */
67 BIT(25), /* frac select */
68 270000000, /* frac rate 0 */
69 297000000, /* frac rate 1 */
74 static SUNXI_CCU_NM_WITH_FRAC_GATE_LOCK(pll_ve_clk
, "pll-ve",
78 BIT(24), /* frac enable */
79 BIT(25), /* frac select */
80 270000000, /* frac rate 0 */
81 297000000, /* frac rate 1 */
86 static SUNXI_CCU_NKM_WITH_GATE_LOCK(pll_ddr0_clk
, "pll-ddr",
95 static struct ccu_nk pll_periph_clk
= {
98 .k
= _SUNXI_CCU_MULT(4, 2),
99 .n
= _SUNXI_CCU_MULT(8, 5),
102 .hw
.init
= CLK_HW_INIT("pll-periph", "osc24M",
107 static const char * const cpu_parents
[] = { "osc32k", "osc24M",
108 "pll-cpu", "pll-cpu" };
109 static SUNXI_CCU_MUX(cpu_clk
, "cpu", cpu_parents
,
110 0x050, 16, 2, CLK_IS_CRITICAL
| CLK_SET_RATE_PARENT
);
112 static const char * const ahb_parents
[] = { "osc32k", "osc24M",
113 "cpu", "pll-periph" };
114 static const struct ccu_mux_var_prediv ahb_predivs
[] = {
115 { .index
= 3, .shift
= 6, .width
= 2 },
117 static struct ccu_div ahb_clk
= {
118 .div
= _SUNXI_CCU_DIV_FLAGS(4, 2, CLK_DIVIDER_POWER_OF_TWO
),
124 .var_predivs
= ahb_predivs
,
125 .n_var_predivs
= ARRAY_SIZE(ahb_predivs
),
130 .features
= CCU_FEATURE_VARIABLE_PREDIV
,
131 .hw
.init
= CLK_HW_INIT_PARENTS("ahb",
138 static struct clk_div_table apb_div_table
[] = {
139 { .val
= 0, .div
= 2 },
140 { .val
= 1, .div
= 2 },
141 { .val
= 2, .div
= 4 },
142 { .val
= 3, .div
= 8 },
145 static SUNXI_CCU_DIV_TABLE(apb_clk
, "apb", "ahb",
146 0x054, 8, 2, apb_div_table
, 0);
148 static SUNXI_CCU_GATE(bus_dma_clk
, "bus-dma", "ahb",
150 static SUNXI_CCU_GATE(bus_mmc0_clk
, "bus-mmc0", "ahb",
152 static SUNXI_CCU_GATE(bus_mmc1_clk
, "bus-mmc1", "ahb",
154 static SUNXI_CCU_GATE(bus_dram_clk
, "bus-dram", "ahb",
156 static SUNXI_CCU_GATE(bus_spi0_clk
, "bus-spi0", "ahb",
158 static SUNXI_CCU_GATE(bus_spi1_clk
, "bus-spi1", "ahb",
160 static SUNXI_CCU_GATE(bus_otg_clk
, "bus-otg", "ahb",
163 static SUNXI_CCU_GATE(bus_ve_clk
, "bus-ve", "ahb",
165 static SUNXI_CCU_GATE(bus_lcd_clk
, "bus-lcd", "ahb",
167 static SUNXI_CCU_GATE(bus_deinterlace_clk
, "bus-deinterlace", "ahb",
169 static SUNXI_CCU_GATE(bus_csi_clk
, "bus-csi", "ahb",
171 static SUNXI_CCU_GATE(bus_tvd_clk
, "bus-tvd", "ahb",
173 static SUNXI_CCU_GATE(bus_tve_clk
, "bus-tve", "ahb",
175 static SUNXI_CCU_GATE(bus_de_be_clk
, "bus-de-be", "ahb",
177 static SUNXI_CCU_GATE(bus_de_fe_clk
, "bus-de-fe", "ahb",
180 static SUNXI_CCU_GATE(bus_codec_clk
, "bus-codec", "apb",
182 static SUNXI_CCU_GATE(bus_spdif_clk
, "bus-spdif", "apb",
184 static SUNXI_CCU_GATE(bus_ir_clk
, "bus-ir", "apb",
186 static SUNXI_CCU_GATE(bus_rsb_clk
, "bus-rsb", "apb",
188 static SUNXI_CCU_GATE(bus_i2s0_clk
, "bus-i2s0", "apb",
190 static SUNXI_CCU_GATE(bus_i2c0_clk
, "bus-i2c0", "apb",
192 static SUNXI_CCU_GATE(bus_i2c1_clk
, "bus-i2c1", "apb",
194 static SUNXI_CCU_GATE(bus_i2c2_clk
, "bus-i2c2", "apb",
196 static SUNXI_CCU_GATE(bus_pio_clk
, "bus-pio", "apb",
198 static SUNXI_CCU_GATE(bus_uart0_clk
, "bus-uart0", "apb",
200 static SUNXI_CCU_GATE(bus_uart1_clk
, "bus-uart1", "apb",
202 static SUNXI_CCU_GATE(bus_uart2_clk
, "bus-uart2", "apb",
205 static const char * const mod0_default_parents
[] = { "osc24M", "pll-periph" };
206 static SUNXI_CCU_MP_WITH_MUX_GATE(mmc0_clk
, "mmc0", mod0_default_parents
, 0x088,
213 static SUNXI_CCU_PHASE(mmc0_sample_clk
, "mmc0_sample", "mmc0",
215 static SUNXI_CCU_PHASE(mmc0_output_clk
, "mmc0_output", "mmc0",
218 static SUNXI_CCU_MP_WITH_MUX_GATE(mmc1_clk
, "mmc1", mod0_default_parents
, 0x08c,
225 static SUNXI_CCU_PHASE(mmc1_sample_clk
, "mmc1_sample", "mmc1",
227 static SUNXI_CCU_PHASE(mmc1_output_clk
, "mmc1_output", "mmc1",
230 static const char * const i2s_spdif_parents
[] = { "pll-audio-8x",
235 static SUNXI_CCU_MUX_WITH_GATE(i2s_clk
, "i2s", i2s_spdif_parents
,
236 0x0b0, 16, 2, BIT(31), 0);
238 static SUNXI_CCU_MUX_WITH_GATE(spdif_clk
, "spdif", i2s_spdif_parents
,
239 0x0b4, 16, 2, BIT(31), 0);
241 /* The BSP header file has a CIR_CFG, but no mod clock uses this definition */
243 static SUNXI_CCU_GATE(usb_phy0_clk
, "usb-phy0", "osc24M",
246 static SUNXI_CCU_GATE(dram_ve_clk
, "dram-ve", "pll-ddr",
248 static SUNXI_CCU_GATE(dram_csi_clk
, "dram-csi", "pll-ddr",
250 static SUNXI_CCU_GATE(dram_deinterlace_clk
, "dram-deinterlace",
251 "pll-ddr", 0x100, BIT(2), 0);
252 static SUNXI_CCU_GATE(dram_tvd_clk
, "dram-tvd", "pll-ddr",
254 static SUNXI_CCU_GATE(dram_de_fe_clk
, "dram-de-fe", "pll-ddr",
256 static SUNXI_CCU_GATE(dram_de_be_clk
, "dram-de-be", "pll-ddr",
259 static const char * const de_parents
[] = { "pll-video", "pll-periph" };
260 static const u8 de_table
[] = { 0, 2, };
261 static SUNXI_CCU_M_WITH_MUX_TABLE_GATE(de_be_clk
, "de-be",
262 de_parents
, de_table
,
263 0x104, 0, 4, 24, 3, BIT(31), 0);
265 static SUNXI_CCU_M_WITH_MUX_TABLE_GATE(de_fe_clk
, "de-fe",
266 de_parents
, de_table
,
267 0x10c, 0, 4, 24, 3, BIT(31), 0);
269 static const char * const tcon_parents
[] = { "pll-video", "pll-video-2x" };
270 static const u8 tcon_table
[] = { 0, 2, };
271 static SUNXI_CCU_MUX_TABLE_WITH_GATE(tcon_clk
, "tcon",
272 tcon_parents
, tcon_table
,
273 0x118, 24, 3, BIT(31),
274 CLK_SET_RATE_PARENT
);
276 static const char * const deinterlace_parents
[] = { "pll-video",
278 static const u8 deinterlace_table
[] = { 0, 2, };
279 static SUNXI_CCU_M_WITH_MUX_TABLE_GATE(deinterlace_clk
, "deinterlace",
280 deinterlace_parents
, deinterlace_table
,
281 0x11c, 0, 4, 24, 3, BIT(31), 0);
283 static const char * const tve_clk2_parents
[] = { "pll-video",
285 static const u8 tve_clk2_table
[] = { 0, 2, };
286 static SUNXI_CCU_M_WITH_MUX_TABLE_GATE(tve_clk2_clk
, "tve-clk2",
287 tve_clk2_parents
, tve_clk2_table
,
288 0x120, 0, 4, 24, 3, BIT(31), 0);
289 static SUNXI_CCU_M_WITH_GATE(tve_clk1_clk
, "tve-clk1", "tve-clk2",
290 0x120, 8, 1, BIT(15), 0);
292 static const char * const tvd_parents
[] = { "pll-video", "osc24M",
294 static SUNXI_CCU_M_WITH_MUX_GATE(tvd_clk
, "tvd", tvd_parents
,
295 0x124, 0, 4, 24, 3, BIT(31), 0);
297 static const char * const csi_parents
[] = { "pll-video", "osc24M" };
298 static const u8 csi_table
[] = { 0, 5, };
299 static SUNXI_CCU_M_WITH_MUX_TABLE_GATE(csi_clk
, "csi", csi_parents
, csi_table
,
300 0x120, 0, 4, 8, 3, BIT(15), 0);
303 * TODO: BSP says the parent is pll-audio, however common sense and experience
304 * told us it should be pll-ve. pll-ve is totally not used in BSP code.
306 static SUNXI_CCU_GATE(ve_clk
, "ve", "pll-audio", 0x13c, BIT(31), 0);
308 static SUNXI_CCU_GATE(codec_clk
, "codec", "pll-audio", 0x140, BIT(31), 0);
310 static SUNXI_CCU_GATE(avs_clk
, "avs", "osc24M", 0x144, BIT(31), 0);
312 static struct ccu_common
*suniv_ccu_clks
[] = {
314 &pll_audio_base_clk
.common
,
315 &pll_video_clk
.common
,
317 &pll_ddr0_clk
.common
,
318 &pll_periph_clk
.common
,
323 &bus_mmc0_clk
.common
,
324 &bus_mmc1_clk
.common
,
325 &bus_dram_clk
.common
,
326 &bus_spi0_clk
.common
,
327 &bus_spi1_clk
.common
,
331 &bus_deinterlace_clk
.common
,
335 &bus_de_be_clk
.common
,
336 &bus_de_fe_clk
.common
,
337 &bus_codec_clk
.common
,
338 &bus_spdif_clk
.common
,
341 &bus_i2s0_clk
.common
,
342 &bus_i2c0_clk
.common
,
343 &bus_i2c1_clk
.common
,
344 &bus_i2c2_clk
.common
,
346 &bus_uart0_clk
.common
,
347 &bus_uart1_clk
.common
,
348 &bus_uart2_clk
.common
,
350 &mmc0_sample_clk
.common
,
351 &mmc0_output_clk
.common
,
353 &mmc1_sample_clk
.common
,
354 &mmc1_output_clk
.common
,
357 &usb_phy0_clk
.common
,
359 &dram_csi_clk
.common
,
360 &dram_deinterlace_clk
.common
,
361 &dram_tvd_clk
.common
,
362 &dram_de_fe_clk
.common
,
363 &dram_de_be_clk
.common
,
367 &deinterlace_clk
.common
,
368 &tve_clk2_clk
.common
,
369 &tve_clk1_clk
.common
,
377 static const struct clk_hw
*clk_parent_pll_audio
[] = {
378 &pll_audio_base_clk
.common
.hw
381 static CLK_FIXED_FACTOR_HWS(pll_audio_clk
, "pll-audio",
382 clk_parent_pll_audio
,
383 4, 1, CLK_SET_RATE_PARENT
);
384 static CLK_FIXED_FACTOR_HWS(pll_audio_2x_clk
, "pll-audio-2x",
385 clk_parent_pll_audio
,
386 2, 1, CLK_SET_RATE_PARENT
);
387 static CLK_FIXED_FACTOR_HWS(pll_audio_4x_clk
, "pll-audio-4x",
388 clk_parent_pll_audio
,
389 1, 1, CLK_SET_RATE_PARENT
);
390 static CLK_FIXED_FACTOR_HWS(pll_audio_8x_clk
, "pll-audio-8x",
391 clk_parent_pll_audio
,
392 1, 2, CLK_SET_RATE_PARENT
);
393 static CLK_FIXED_FACTOR_HW(pll_video_2x_clk
, "pll-video-2x",
394 &pll_video_clk
.common
.hw
,
397 static struct clk_hw_onecell_data suniv_hw_clks
= {
399 [CLK_PLL_CPU
] = &pll_cpu_clk
.common
.hw
,
400 [CLK_PLL_AUDIO_BASE
] = &pll_audio_base_clk
.common
.hw
,
401 [CLK_PLL_AUDIO
] = &pll_audio_clk
.hw
,
402 [CLK_PLL_AUDIO_2X
] = &pll_audio_2x_clk
.hw
,
403 [CLK_PLL_AUDIO_4X
] = &pll_audio_4x_clk
.hw
,
404 [CLK_PLL_AUDIO_8X
] = &pll_audio_8x_clk
.hw
,
405 [CLK_PLL_VIDEO
] = &pll_video_clk
.common
.hw
,
406 [CLK_PLL_VIDEO_2X
] = &pll_video_2x_clk
.hw
,
407 [CLK_PLL_VE
] = &pll_ve_clk
.common
.hw
,
408 [CLK_PLL_DDR0
] = &pll_ddr0_clk
.common
.hw
,
409 [CLK_PLL_PERIPH
] = &pll_periph_clk
.common
.hw
,
410 [CLK_CPU
] = &cpu_clk
.common
.hw
,
411 [CLK_AHB
] = &ahb_clk
.common
.hw
,
412 [CLK_APB
] = &apb_clk
.common
.hw
,
413 [CLK_BUS_DMA
] = &bus_dma_clk
.common
.hw
,
414 [CLK_BUS_MMC0
] = &bus_mmc0_clk
.common
.hw
,
415 [CLK_BUS_MMC1
] = &bus_mmc1_clk
.common
.hw
,
416 [CLK_BUS_DRAM
] = &bus_dram_clk
.common
.hw
,
417 [CLK_BUS_SPI0
] = &bus_spi0_clk
.common
.hw
,
418 [CLK_BUS_SPI1
] = &bus_spi1_clk
.common
.hw
,
419 [CLK_BUS_OTG
] = &bus_otg_clk
.common
.hw
,
420 [CLK_BUS_VE
] = &bus_ve_clk
.common
.hw
,
421 [CLK_BUS_LCD
] = &bus_lcd_clk
.common
.hw
,
422 [CLK_BUS_DEINTERLACE
] = &bus_deinterlace_clk
.common
.hw
,
423 [CLK_BUS_CSI
] = &bus_csi_clk
.common
.hw
,
424 [CLK_BUS_TVD
] = &bus_tvd_clk
.common
.hw
,
425 [CLK_BUS_TVE
] = &bus_tve_clk
.common
.hw
,
426 [CLK_BUS_DE_BE
] = &bus_de_be_clk
.common
.hw
,
427 [CLK_BUS_DE_FE
] = &bus_de_fe_clk
.common
.hw
,
428 [CLK_BUS_CODEC
] = &bus_codec_clk
.common
.hw
,
429 [CLK_BUS_SPDIF
] = &bus_spdif_clk
.common
.hw
,
430 [CLK_BUS_IR
] = &bus_ir_clk
.common
.hw
,
431 [CLK_BUS_RSB
] = &bus_rsb_clk
.common
.hw
,
432 [CLK_BUS_I2S0
] = &bus_i2s0_clk
.common
.hw
,
433 [CLK_BUS_I2C0
] = &bus_i2c0_clk
.common
.hw
,
434 [CLK_BUS_I2C1
] = &bus_i2c1_clk
.common
.hw
,
435 [CLK_BUS_I2C2
] = &bus_i2c2_clk
.common
.hw
,
436 [CLK_BUS_PIO
] = &bus_pio_clk
.common
.hw
,
437 [CLK_BUS_UART0
] = &bus_uart0_clk
.common
.hw
,
438 [CLK_BUS_UART1
] = &bus_uart1_clk
.common
.hw
,
439 [CLK_BUS_UART2
] = &bus_uart2_clk
.common
.hw
,
440 [CLK_MMC0
] = &mmc0_clk
.common
.hw
,
441 [CLK_MMC0_SAMPLE
] = &mmc0_sample_clk
.common
.hw
,
442 [CLK_MMC0_OUTPUT
] = &mmc0_output_clk
.common
.hw
,
443 [CLK_MMC1
] = &mmc1_clk
.common
.hw
,
444 [CLK_MMC1_SAMPLE
] = &mmc1_sample_clk
.common
.hw
,
445 [CLK_MMC1_OUTPUT
] = &mmc1_output_clk
.common
.hw
,
446 [CLK_I2S
] = &i2s_clk
.common
.hw
,
447 [CLK_SPDIF
] = &spdif_clk
.common
.hw
,
448 [CLK_USB_PHY0
] = &usb_phy0_clk
.common
.hw
,
449 [CLK_DRAM_VE
] = &dram_ve_clk
.common
.hw
,
450 [CLK_DRAM_CSI
] = &dram_csi_clk
.common
.hw
,
451 [CLK_DRAM_DEINTERLACE
] = &dram_deinterlace_clk
.common
.hw
,
452 [CLK_DRAM_TVD
] = &dram_tvd_clk
.common
.hw
,
453 [CLK_DRAM_DE_FE
] = &dram_de_fe_clk
.common
.hw
,
454 [CLK_DRAM_DE_BE
] = &dram_de_be_clk
.common
.hw
,
455 [CLK_DE_BE
] = &de_be_clk
.common
.hw
,
456 [CLK_DE_FE
] = &de_fe_clk
.common
.hw
,
457 [CLK_TCON
] = &tcon_clk
.common
.hw
,
458 [CLK_DEINTERLACE
] = &deinterlace_clk
.common
.hw
,
459 [CLK_TVE2_CLK
] = &tve_clk2_clk
.common
.hw
,
460 [CLK_TVE1_CLK
] = &tve_clk1_clk
.common
.hw
,
461 [CLK_TVD
] = &tvd_clk
.common
.hw
,
462 [CLK_CSI
] = &csi_clk
.common
.hw
,
463 [CLK_VE
] = &ve_clk
.common
.hw
,
464 [CLK_CODEC
] = &codec_clk
.common
.hw
,
465 [CLK_AVS
] = &avs_clk
.common
.hw
,
470 static struct ccu_reset_map suniv_ccu_resets
[] = {
471 [RST_USB_PHY0
] = { 0x0cc, BIT(0) },
473 [RST_BUS_DMA
] = { 0x2c0, BIT(6) },
474 [RST_BUS_MMC0
] = { 0x2c0, BIT(8) },
475 [RST_BUS_MMC1
] = { 0x2c0, BIT(9) },
476 [RST_BUS_DRAM
] = { 0x2c0, BIT(14) },
477 [RST_BUS_SPI0
] = { 0x2c0, BIT(20) },
478 [RST_BUS_SPI1
] = { 0x2c0, BIT(21) },
479 [RST_BUS_OTG
] = { 0x2c0, BIT(24) },
480 [RST_BUS_VE
] = { 0x2c4, BIT(0) },
481 [RST_BUS_LCD
] = { 0x2c4, BIT(4) },
482 [RST_BUS_DEINTERLACE
] = { 0x2c4, BIT(5) },
483 [RST_BUS_CSI
] = { 0x2c4, BIT(8) },
484 [RST_BUS_TVD
] = { 0x2c4, BIT(9) },
485 [RST_BUS_TVE
] = { 0x2c4, BIT(10) },
486 [RST_BUS_DE_BE
] = { 0x2c4, BIT(12) },
487 [RST_BUS_DE_FE
] = { 0x2c4, BIT(14) },
488 [RST_BUS_CODEC
] = { 0x2d0, BIT(0) },
489 [RST_BUS_SPDIF
] = { 0x2d0, BIT(1) },
490 [RST_BUS_IR
] = { 0x2d0, BIT(2) },
491 [RST_BUS_RSB
] = { 0x2d0, BIT(3) },
492 [RST_BUS_I2S0
] = { 0x2d0, BIT(12) },
493 [RST_BUS_I2C0
] = { 0x2d0, BIT(16) },
494 [RST_BUS_I2C1
] = { 0x2d0, BIT(17) },
495 [RST_BUS_I2C2
] = { 0x2d0, BIT(18) },
496 [RST_BUS_UART0
] = { 0x2d0, BIT(20) },
497 [RST_BUS_UART1
] = { 0x2d0, BIT(21) },
498 [RST_BUS_UART2
] = { 0x2d0, BIT(22) },
501 static const struct sunxi_ccu_desc suniv_ccu_desc
= {
502 .ccu_clks
= suniv_ccu_clks
,
503 .num_ccu_clks
= ARRAY_SIZE(suniv_ccu_clks
),
505 .hw_clks
= &suniv_hw_clks
,
507 .resets
= suniv_ccu_resets
,
508 .num_resets
= ARRAY_SIZE(suniv_ccu_resets
),
511 static struct ccu_pll_nb suniv_pll_cpu_nb
= {
512 .common
= &pll_cpu_clk
.common
,
513 /* copy from pll_cpu_clk */
518 static struct ccu_mux_nb suniv_cpu_nb
= {
519 .common
= &cpu_clk
.common
,
521 .delay_us
= 1, /* > 8 clock cycles at 24 MHz */
522 .bypass_index
= 1, /* index of 24 MHz oscillator */
525 static void __init
suniv_f1c100s_ccu_setup(struct device_node
*node
)
530 reg
= of_io_request_and_map(node
, 0, of_node_full_name(node
));
532 pr_err("%pOF: Could not map the clock registers\n", node
);
536 /* Force the PLL-Audio-1x divider to 4 */
537 val
= readl(reg
+ SUNIV_PLL_AUDIO_REG
);
538 val
&= ~GENMASK(19, 16);
539 writel(val
| (3 << 16), reg
+ SUNIV_PLL_AUDIO_REG
);
541 sunxi_ccu_probe(node
, reg
, &suniv_ccu_desc
);
543 /* Gate then ungate PLL CPU after any rate changes */
544 ccu_pll_notifier_register(&suniv_pll_cpu_nb
);
546 /* Reparent CPU during PLL CPU rate changes */
547 ccu_mux_notifier_register(pll_cpu_clk
.common
.hw
.clk
,
550 CLK_OF_DECLARE(suniv_f1c100s_ccu
, "allwinner,suniv-f1c100s-ccu",
551 suniv_f1c100s_ccu_setup
);