2 * (C) Copyright 2013-2015
3 * NVIDIA Corporation <www.nvidia.com>
5 * SPDX-License-Identifier: GPL-2.0+
8 /* Tegra124 Clock control functions */
12 #include <asm/arch/clock.h>
13 #include <asm/arch/sysctr.h>
14 #include <asm/arch/tegra.h>
15 #include <asm/arch-tegra/clk_rst.h>
16 #include <asm/arch-tegra/timer.h>
21 * Clock types that we can use as a source. The Tegra124 has muxes for the
22 * peripheral clocks, and in most cases there are four options for the clock
23 * source. This gives us a clock 'type' and exploits what commonality exists
26 * Letters are obvious, except for T which means CLK_M, and S which means the
27 * clock derived from 32KHz. Beware that CLK_M (also called OSC in the
28 * datasheet) and PLL_M are different things. The former is the basic
29 * clock supplied to the SOC from an external oscillator. The latter is the
32 * See definitions in clock_id in the header file.
35 CLOCK_TYPE_AXPT, /* PLL_A, PLL_X, PLL_P, CLK_M */
36 CLOCK_TYPE_MCPA, /* and so on */
50 CLOCK_TYPE_PC2CC3M_T16, /* PC2CC3M_T, but w/16-bit divisor (I2C) */
53 CLOCK_TYPE_MCPTM2C2C3,
55 CLOCK_TYPE_AC2CC3P_TS2,
58 CLOCK_TYPE_NONE = -1, /* invalid clock type */
62 CLOCK_MAX_MUX = 8 /* number of source options for each clock */
66 * Clock source mux for each clock type. This just converts our enum into
67 * a list of mux sources for use by the code.
70 * The extra column in each clock source array is used to store the mask
71 * bits in its register for the source.
73 #define CLK(x) CLOCK_ID_ ## x
74 static enum clock_id clock_source[CLOCK_TYPE_COUNT][CLOCK_MAX_MUX+1] = {
75 { CLK(AUDIO), CLK(XCPU), CLK(PERIPH), CLK(OSC),
76 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
78 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(AUDIO),
79 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
81 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
82 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
84 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(NONE),
85 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
87 { CLK(PERIPH), CLK(CGENERAL), CLK(MEMORY), CLK(OSC),
88 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
90 { CLK(PERIPH), CLK(DISPLAY), CLK(CGENERAL), CLK(OSC),
91 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
93 { CLK(AUDIO), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
94 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
96 { CLK(AUDIO), CLK(SFROM32KHZ), CLK(PERIPH), CLK(OSC),
97 CLK(EPCI), CLK(NONE), CLK(NONE), CLK(NONE),
99 { CLK(PERIPH), CLK(MEMORY), CLK(DISPLAY), CLK(AUDIO),
100 CLK(CGENERAL), CLK(DISPLAY2), CLK(OSC), CLK(NONE),
102 { CLK(PERIPH), CLK(CGENERAL), CLK(SFROM32KHZ), CLK(OSC),
103 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
106 { CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
107 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
110 /* Additional clock types on Tegra114+ */
111 /* CLOCK_TYPE_PC2CC3M */
112 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
113 CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
115 /* CLOCK_TYPE_PC2CC3S_T */
116 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
117 CLK(SFROM32KHZ), CLK(NONE), CLK(OSC), CLK(NONE),
119 /* CLOCK_TYPE_PC2CC3M_T */
120 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
121 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
123 /* CLOCK_TYPE_PC2CC3M_T, w/16-bit divisor (I2C) */
124 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
125 CLK(MEMORY), CLK(NONE), CLK(OSC), CLK(NONE),
127 /* CLOCK_TYPE_MC2CC3P_A */
128 { CLK(MEMORY), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
129 CLK(PERIPH), CLK(NONE), CLK(AUDIO), CLK(NONE),
132 { CLK(MEMORY), CLK(NONE), CLK(NONE), CLK(NONE),
133 CLK(NONE), CLK(NONE), CLK(NONE), CLK(NONE),
135 /* CLOCK_TYPE_MCPTM2C2C3 */
136 { CLK(MEMORY), CLK(CGENERAL), CLK(PERIPH), CLK(OSC),
137 CLK(MEMORY2), CLK(CGENERAL2), CLK(CGENERAL3), CLK(NONE),
139 /* CLOCK_TYPE_PC2CC3T_S */
140 { CLK(PERIPH), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
141 CLK(OSC), CLK(NONE), CLK(SFROM32KHZ), CLK(NONE),
143 /* CLOCK_TYPE_AC2CC3P_TS2 */
144 { CLK(AUDIO), CLK(CGENERAL2), CLK(CGENERAL), CLK(CGENERAL3),
145 CLK(PERIPH), CLK(NONE), CLK(OSC), CLK(SRC2),
150 * Clock type for each peripheral clock source. We put the name in each
151 * record just so it is easy to match things up
153 #define TYPE(name, type) type
154 static enum clock_type_id clock_periph_type[PERIPHC_COUNT] = {
156 TYPE(PERIPHC_I2S1, CLOCK_TYPE_AXPT),
157 TYPE(PERIPHC_I2S2, CLOCK_TYPE_AXPT),
158 TYPE(PERIPHC_SPDIF_OUT, CLOCK_TYPE_AXPT),
159 TYPE(PERIPHC_SPDIF_IN, CLOCK_TYPE_PC2CC3M),
160 TYPE(PERIPHC_PWM, CLOCK_TYPE_PC2CC3S_T),
161 TYPE(PERIPHC_05h, CLOCK_TYPE_NONE),
162 TYPE(PERIPHC_SBC2, CLOCK_TYPE_PC2CC3M_T),
163 TYPE(PERIPHC_SBC3, CLOCK_TYPE_PC2CC3M_T),
166 TYPE(PERIPHC_08h, CLOCK_TYPE_NONE),
167 TYPE(PERIPHC_I2C1, CLOCK_TYPE_PC2CC3M_T16),
168 TYPE(PERIPHC_I2C5, CLOCK_TYPE_PC2CC3M_T16),
169 TYPE(PERIPHC_0bh, CLOCK_TYPE_NONE),
170 TYPE(PERIPHC_0ch, CLOCK_TYPE_NONE),
171 TYPE(PERIPHC_SBC1, CLOCK_TYPE_PC2CC3M_T),
172 TYPE(PERIPHC_DISP1, CLOCK_TYPE_PMDACD2T),
173 TYPE(PERIPHC_DISP2, CLOCK_TYPE_PMDACD2T),
176 TYPE(PERIPHC_10h, CLOCK_TYPE_NONE),
177 TYPE(PERIPHC_11h, CLOCK_TYPE_NONE),
178 TYPE(PERIPHC_VI, CLOCK_TYPE_MC2CC3P_A),
179 TYPE(PERIPHC_13h, CLOCK_TYPE_NONE),
180 TYPE(PERIPHC_SDMMC1, CLOCK_TYPE_PC2CC3M_T),
181 TYPE(PERIPHC_SDMMC2, CLOCK_TYPE_PC2CC3M_T),
182 TYPE(PERIPHC_16h, CLOCK_TYPE_NONE),
183 TYPE(PERIPHC_17h, CLOCK_TYPE_NONE),
186 TYPE(PERIPHC_18h, CLOCK_TYPE_NONE),
187 TYPE(PERIPHC_SDMMC4, CLOCK_TYPE_PC2CC3M_T),
188 TYPE(PERIPHC_VFIR, CLOCK_TYPE_PC2CC3M_T),
189 TYPE(PERIPHC_1Bh, CLOCK_TYPE_NONE),
190 TYPE(PERIPHC_1Ch, CLOCK_TYPE_NONE),
191 TYPE(PERIPHC_HSI, CLOCK_TYPE_PC2CC3M_T),
192 TYPE(PERIPHC_UART1, CLOCK_TYPE_PC2CC3M_T),
193 TYPE(PERIPHC_UART2, CLOCK_TYPE_PC2CC3M_T),
196 TYPE(PERIPHC_HOST1X, CLOCK_TYPE_MC2CC3P_A),
197 TYPE(PERIPHC_21h, CLOCK_TYPE_NONE),
198 TYPE(PERIPHC_22h, CLOCK_TYPE_NONE),
199 TYPE(PERIPHC_HDMI, CLOCK_TYPE_PMDACD2T),
200 TYPE(PERIPHC_24h, CLOCK_TYPE_NONE),
201 TYPE(PERIPHC_25h, CLOCK_TYPE_NONE),
202 TYPE(PERIPHC_I2C2, CLOCK_TYPE_PC2CC3M_T16),
203 TYPE(PERIPHC_EMC, CLOCK_TYPE_MCPTM2C2C3),
206 TYPE(PERIPHC_UART3, CLOCK_TYPE_PC2CC3M_T),
207 TYPE(PERIPHC_29h, CLOCK_TYPE_NONE),
208 TYPE(PERIPHC_VI_SENSOR, CLOCK_TYPE_MC2CC3P_A),
209 TYPE(PERIPHC_2bh, CLOCK_TYPE_NONE),
210 TYPE(PERIPHC_2ch, CLOCK_TYPE_NONE),
211 TYPE(PERIPHC_SBC4, CLOCK_TYPE_PC2CC3M_T),
212 TYPE(PERIPHC_I2C3, CLOCK_TYPE_PC2CC3M_T16),
213 TYPE(PERIPHC_SDMMC3, CLOCK_TYPE_PC2CC3M_T),
216 TYPE(PERIPHC_UART4, CLOCK_TYPE_PC2CC3M_T),
217 TYPE(PERIPHC_UART5, CLOCK_TYPE_PC2CC3M_T),
218 TYPE(PERIPHC_VDE, CLOCK_TYPE_PC2CC3M_T),
219 TYPE(PERIPHC_OWR, CLOCK_TYPE_PC2CC3M_T),
220 TYPE(PERIPHC_NOR, CLOCK_TYPE_PC2CC3M_T),
221 TYPE(PERIPHC_CSITE, CLOCK_TYPE_PC2CC3M_T),
222 TYPE(PERIPHC_I2S0, CLOCK_TYPE_AXPT),
223 TYPE(PERIPHC_DTV, CLOCK_TYPE_NONE),
226 TYPE(PERIPHC_38h, CLOCK_TYPE_NONE),
227 TYPE(PERIPHC_39h, CLOCK_TYPE_NONE),
228 TYPE(PERIPHC_3ah, CLOCK_TYPE_NONE),
229 TYPE(PERIPHC_3bh, CLOCK_TYPE_NONE),
230 TYPE(PERIPHC_MSENC, CLOCK_TYPE_MC2CC3P_A),
231 TYPE(PERIPHC_TSEC, CLOCK_TYPE_PC2CC3M_T),
232 TYPE(PERIPHC_3eh, CLOCK_TYPE_NONE),
233 TYPE(PERIPHC_OSC, CLOCK_TYPE_NONE),
236 TYPE(PERIPHC_40h, CLOCK_TYPE_NONE), /* start with 0x3b0 */
237 TYPE(PERIPHC_MSELECT, CLOCK_TYPE_PC2CC3M_T),
238 TYPE(PERIPHC_TSENSOR, CLOCK_TYPE_PC2CC3T_S),
239 TYPE(PERIPHC_I2S3, CLOCK_TYPE_AXPT),
240 TYPE(PERIPHC_I2S4, CLOCK_TYPE_AXPT),
241 TYPE(PERIPHC_I2C4, CLOCK_TYPE_PC2CC3M_T16),
242 TYPE(PERIPHC_SBC5, CLOCK_TYPE_PC2CC3M_T),
243 TYPE(PERIPHC_SBC6, CLOCK_TYPE_PC2CC3M_T),
246 TYPE(PERIPHC_AUDIO, CLOCK_TYPE_AC2CC3P_TS2),
247 TYPE(PERIPHC_49h, CLOCK_TYPE_NONE),
248 TYPE(PERIPHC_DAM0, CLOCK_TYPE_AC2CC3P_TS2),
249 TYPE(PERIPHC_DAM1, CLOCK_TYPE_AC2CC3P_TS2),
250 TYPE(PERIPHC_DAM2, CLOCK_TYPE_AC2CC3P_TS2),
251 TYPE(PERIPHC_HDA2CODEC2X, CLOCK_TYPE_PC2CC3M_T),
252 TYPE(PERIPHC_ACTMON, CLOCK_TYPE_PC2CC3S_T),
253 TYPE(PERIPHC_EXTPERIPH1, CLOCK_TYPE_ASPTE),
256 TYPE(PERIPHC_EXTPERIPH2, CLOCK_TYPE_ASPTE),
257 TYPE(PERIPHC_EXTPERIPH3, CLOCK_TYPE_ASPTE),
258 TYPE(PERIPHC_52h, CLOCK_TYPE_NONE),
259 TYPE(PERIPHC_I2CSLOW, CLOCK_TYPE_PC2CC3S_T),
260 TYPE(PERIPHC_SYS, CLOCK_TYPE_NONE),
261 TYPE(PERIPHC_55h, CLOCK_TYPE_NONE),
262 TYPE(PERIPHC_56h, CLOCK_TYPE_NONE),
263 TYPE(PERIPHC_57h, CLOCK_TYPE_NONE),
266 TYPE(PERIPHC_58h, CLOCK_TYPE_NONE),
267 TYPE(PERIPHC_SOR, CLOCK_TYPE_NONE),
268 TYPE(PERIPHC_5ah, CLOCK_TYPE_NONE),
269 TYPE(PERIPHC_5bh, CLOCK_TYPE_NONE),
270 TYPE(PERIPHC_SATAOOB, CLOCK_TYPE_PCMT),
271 TYPE(PERIPHC_SATA, CLOCK_TYPE_PCMT),
272 TYPE(PERIPHC_HDA, CLOCK_TYPE_PC2CC3M_T),
273 TYPE(PERIPHC_5fh, CLOCK_TYPE_NONE),
276 TYPE(PERIPHC_XUSB_CORE_HOST, CLOCK_TYPE_NONE),
277 TYPE(PERIPHC_XUSB_FALCON, CLOCK_TYPE_NONE),
278 TYPE(PERIPHC_XUSB_FS, CLOCK_TYPE_NONE),
279 TYPE(PERIPHC_XUSB_CORE_DEV, CLOCK_TYPE_NONE),
280 TYPE(PERIPHC_XUSB_SS, CLOCK_TYPE_NONE),
281 TYPE(PERIPHC_CILAB, CLOCK_TYPE_NONE),
282 TYPE(PERIPHC_CILCD, CLOCK_TYPE_NONE),
283 TYPE(PERIPHC_CILE, CLOCK_TYPE_NONE),
286 TYPE(PERIPHC_DSIA_LP, CLOCK_TYPE_NONE),
287 TYPE(PERIPHC_DSIB_LP, CLOCK_TYPE_NONE),
288 TYPE(PERIPHC_ENTROPY, CLOCK_TYPE_NONE),
289 TYPE(PERIPHC_DVFS_REF, CLOCK_TYPE_NONE),
290 TYPE(PERIPHC_DVFS_SOC, CLOCK_TYPE_NONE),
291 TYPE(PERIPHC_TRACECLKIN, CLOCK_TYPE_NONE),
292 TYPE(PERIPHC_ADX0, CLOCK_TYPE_NONE),
293 TYPE(PERIPHC_AMX0, CLOCK_TYPE_NONE),
296 TYPE(PERIPHC_EMC_LATENCY, CLOCK_TYPE_NONE),
297 TYPE(PERIPHC_SOC_THERM, CLOCK_TYPE_NONE),
298 TYPE(PERIPHC_72h, CLOCK_TYPE_NONE),
299 TYPE(PERIPHC_73h, CLOCK_TYPE_NONE),
300 TYPE(PERIPHC_74h, CLOCK_TYPE_NONE),
301 TYPE(PERIPHC_75h, CLOCK_TYPE_NONE),
302 TYPE(PERIPHC_VI_SENSOR2, CLOCK_TYPE_NONE),
303 TYPE(PERIPHC_I2C6, CLOCK_TYPE_PC2CC3M_T16),
306 TYPE(PERIPHC_78h, CLOCK_TYPE_NONE),
307 TYPE(PERIPHC_EMC_DLL, CLOCK_TYPE_MCPTM2C2C3),
308 TYPE(PERIPHC_HDMI_AUDIO, CLOCK_TYPE_NONE),
309 TYPE(PERIPHC_CLK72MHZ, CLOCK_TYPE_NONE),
310 TYPE(PERIPHC_ADX1, CLOCK_TYPE_AC2CC3P_TS2),
311 TYPE(PERIPHC_AMX1, CLOCK_TYPE_AC2CC3P_TS2),
312 TYPE(PERIPHC_VIC, CLOCK_TYPE_NONE),
313 TYPE(PERIPHC_7Fh, CLOCK_TYPE_NONE),
317 * This array translates a periph_id to a periphc_internal_id
319 * Not present/matched up:
320 * uint vi_sensor; _VI_SENSOR_0, 0x1A8
321 * SPDIF - which is both 0x08 and 0x0c
324 #define NONE(name) (-1)
325 #define OFFSET(name, value) PERIPHC_ ## name
326 static s8 periph_id_to_internal_id[PERIPH_ID_COUNT] = {
335 PERIPHC_UART2, /* and vfir 0x68 */
367 /* Middle word: 63:32 */
379 PERIPHC_SBC1, /* SBCx = SPIx */
407 /* Upper word 95:64 */
569 * PLL divider shift/mask tables for all PLL IDs.
571 struct clk_pll_info tegra_pll_info_table[CLOCK_ID_PLL_COUNT] = {
573 * T124: same as T114, some deviations from T2x/T30.
574 * NOTE: If kcp_mask/kvco_mask == 0, they're not used in that PLL (PLLX, etc.)
575 * If lock_ena or lock_det are >31, they're not used in that PLL.
578 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F,
579 .lock_ena = 24, .lock_det = 27, .kcp_shift = 28, .kcp_mask = 3, .kvco_shift = 27, .kvco_mask = 1 }, /* PLLC */
580 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0,
581 .lock_ena = 0, .lock_det = 27, .kcp_shift = 1, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLM */
582 { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
583 .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLP */
584 { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
585 .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLA */
586 { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x01,
587 .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLU */
588 { .m_shift = 0, .m_mask = 0x1F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
589 .lock_ena = 22, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLD */
590 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 20, .p_mask = 0x0F,
591 .lock_ena = 18, .lock_det = 27, .kcp_shift = 0, .kcp_mask = 0, .kvco_shift = 0, .kvco_mask = 0 }, /* PLLX */
592 { .m_shift = 0, .m_mask = 0xFF, .n_shift = 8, .n_mask = 0xFF, .p_shift = 0, .p_mask = 0,
593 .lock_ena = 9, .lock_det = 11, .kcp_shift = 6, .kcp_mask = 3, .kvco_shift = 0, .kvco_mask = 1 }, /* PLLE */
594 { .m_shift = 0, .m_mask = 0x0F, .n_shift = 8, .n_mask = 0x3FF, .p_shift = 20, .p_mask = 0x07,
595 .lock_ena = 18, .lock_det = 27, .kcp_shift = 8, .kcp_mask = 0xF, .kvco_shift = 4, .kvco_mask = 0xF }, /* PLLS (RESERVED) */
599 * Get the oscillator frequency, from the corresponding hardware configuration
600 * field. Note that Tegra30+ support 3 new higher freqs, but we map back
601 * to the old T20 freqs. Support for the higher oscillators is TBD.
603 enum clock_osc_freq clock_get_osc_freq(void)
605 struct clk_rst_ctlr *clkrst =
606 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
609 reg = readl(&clkrst->crc_osc_ctrl);
610 reg = (reg & OSC_FREQ_MASK) >> OSC_FREQ_SHIFT;
612 if (reg & 1) /* one of the newer freqs */
613 printf("Warning: OSC_FREQ is unsupported! (%d)\n", reg);
615 return reg >> 2; /* Map to most common (T20) freqs */
618 /* Returns a pointer to the clock source register for a peripheral */
619 u32 *get_periph_source_reg(enum periph_id periph_id)
621 struct clk_rst_ctlr *clkrst =
622 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
623 enum periphc_internal_id internal_id;
625 /* Coresight is a special case */
626 if (periph_id == PERIPH_ID_CSI)
627 return &clkrst->crc_clk_src[PERIPH_ID_CSI+1];
629 assert(periph_id >= PERIPH_ID_FIRST && periph_id < PERIPH_ID_COUNT);
630 internal_id = periph_id_to_internal_id[periph_id];
631 assert(internal_id != -1);
632 if (internal_id >= PERIPHC_X_FIRST) {
633 internal_id -= PERIPHC_X_FIRST;
634 return &clkrst->crc_clk_src_x[internal_id];
635 } else if (internal_id >= PERIPHC_VW_FIRST) {
636 internal_id -= PERIPHC_VW_FIRST;
637 return &clkrst->crc_clk_src_vw[internal_id];
639 return &clkrst->crc_clk_src[internal_id];
644 * Given a peripheral ID and the required source clock, this returns which
645 * value should be programmed into the source mux for that peripheral.
647 * There is special code here to handle the one source type with 5 sources.
649 * @param periph_id peripheral to start
650 * @param source PLL id of required parent clock
651 * @param mux_bits Set to number of bits in mux register: 2 or 4
652 * @param divider_bits Set to number of divider bits (8 or 16)
653 * @return mux value (0-4, or -1 if not found)
655 int get_periph_clock_source(enum periph_id periph_id,
656 enum clock_id parent, int *mux_bits, int *divider_bits)
658 enum clock_type_id type;
659 enum periphc_internal_id internal_id;
662 assert(clock_periph_id_isvalid(periph_id));
664 internal_id = periph_id_to_internal_id[periph_id];
665 assert(periphc_internal_id_isvalid(internal_id));
667 type = clock_periph_type[internal_id];
668 assert(clock_type_id_isvalid(type));
670 *mux_bits = clock_source[type][CLOCK_MAX_MUX];
672 if (type == CLOCK_TYPE_PC2CC3M_T16)
677 for (mux = 0; mux < CLOCK_MAX_MUX; mux++)
678 if (clock_source[type][mux] == parent)
681 /* if we get here, either us or the caller has made a mistake */
682 printf("Caller requested bad clock: periph=%d, parent=%d\n", periph_id,
687 void clock_set_enable(enum periph_id periph_id, int enable)
689 struct clk_rst_ctlr *clkrst =
690 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
694 /* Enable/disable the clock to this peripheral */
695 assert(clock_periph_id_isvalid(periph_id));
696 if ((int)periph_id < (int)PERIPH_ID_VW_FIRST)
697 clk = &clkrst->crc_clk_out_enb[PERIPH_REG(periph_id)];
698 else if ((int)periph_id < PERIPH_ID_X_FIRST)
699 clk = &clkrst->crc_clk_out_enb_vw[PERIPH_REG(periph_id)];
701 clk = &clkrst->crc_clk_out_enb_x;
704 reg |= PERIPH_MASK(periph_id);
706 reg &= ~PERIPH_MASK(periph_id);
710 void reset_set_enable(enum periph_id periph_id, int enable)
712 struct clk_rst_ctlr *clkrst =
713 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
717 /* Enable/disable reset to the peripheral */
718 assert(clock_periph_id_isvalid(periph_id));
719 if (periph_id < PERIPH_ID_VW_FIRST)
720 reset = &clkrst->crc_rst_dev[PERIPH_REG(periph_id)];
721 else if ((int)periph_id < PERIPH_ID_X_FIRST)
722 reset = &clkrst->crc_rst_dev_vw[PERIPH_REG(periph_id)];
724 reset = &clkrst->crc_rst_devices_x;
727 reg |= PERIPH_MASK(periph_id);
729 reg &= ~PERIPH_MASK(periph_id);
733 #ifdef CONFIG_OF_CONTROL
735 * Convert a device tree clock ID to our peripheral ID. They are mostly
736 * the same but we are very cautious so we check that a valid clock ID is
739 * @param clk_id Clock ID according to tegra124 device tree binding
740 * @return peripheral ID, or PERIPH_ID_NONE if the clock ID is invalid
742 enum periph_id clk_id_to_periph_id(int clk_id)
744 if (clk_id > PERIPH_ID_COUNT)
745 return PERIPH_ID_NONE;
748 case PERIPH_ID_RESERVED4:
749 case PERIPH_ID_RESERVED25:
750 case PERIPH_ID_RESERVED35:
751 case PERIPH_ID_RESERVED36:
752 case PERIPH_ID_RESERVED38:
753 case PERIPH_ID_RESERVED43:
754 case PERIPH_ID_RESERVED49:
755 case PERIPH_ID_RESERVED53:
756 case PERIPH_ID_RESERVED64:
757 case PERIPH_ID_RESERVED84:
758 case PERIPH_ID_RESERVED85:
759 case PERIPH_ID_RESERVED86:
760 case PERIPH_ID_RESERVED88:
761 case PERIPH_ID_RESERVED90:
762 case PERIPH_ID_RESERVED92:
763 case PERIPH_ID_RESERVED93:
764 case PERIPH_ID_RESERVED94:
765 case PERIPH_ID_V_RESERVED2:
766 case PERIPH_ID_V_RESERVED4:
767 case PERIPH_ID_V_RESERVED17:
768 case PERIPH_ID_V_RESERVED18:
769 case PERIPH_ID_V_RESERVED19:
770 case PERIPH_ID_V_RESERVED20:
771 case PERIPH_ID_V_RESERVED21:
772 case PERIPH_ID_V_RESERVED22:
773 case PERIPH_ID_W_RESERVED2:
774 case PERIPH_ID_W_RESERVED3:
775 case PERIPH_ID_W_RESERVED4:
776 case PERIPH_ID_W_RESERVED5:
777 case PERIPH_ID_W_RESERVED6:
778 case PERIPH_ID_W_RESERVED7:
779 case PERIPH_ID_W_RESERVED9:
780 case PERIPH_ID_W_RESERVED10:
781 case PERIPH_ID_W_RESERVED11:
782 case PERIPH_ID_W_RESERVED12:
783 case PERIPH_ID_W_RESERVED13:
784 case PERIPH_ID_W_RESERVED15:
785 case PERIPH_ID_W_RESERVED16:
786 case PERIPH_ID_W_RESERVED17:
787 case PERIPH_ID_W_RESERVED18:
788 case PERIPH_ID_W_RESERVED19:
789 case PERIPH_ID_W_RESERVED20:
790 case PERIPH_ID_W_RESERVED23:
791 case PERIPH_ID_W_RESERVED29:
792 case PERIPH_ID_W_RESERVED30:
793 case PERIPH_ID_W_RESERVED31:
794 return PERIPH_ID_NONE;
799 #endif /* CONFIG_OF_CONTROL */
801 void clock_early_init(void)
803 struct clk_rst_ctlr *clkrst =
804 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
805 struct clk_pll_info *pllinfo;
808 tegra30_set_up_pllp();
811 * PLLC output frequency set to 600Mhz
812 * PLLD output frequency set to 925Mhz
814 switch (clock_get_osc_freq()) {
815 case CLOCK_OSC_FREQ_12_0: /* OSC is 12Mhz */
816 clock_set_rate(CLOCK_ID_CGENERAL, 600, 12, 0, 8);
817 clock_set_rate(CLOCK_ID_DISPLAY, 925, 12, 0, 12);
820 case CLOCK_OSC_FREQ_26_0: /* OSC is 26Mhz */
821 clock_set_rate(CLOCK_ID_CGENERAL, 600, 26, 0, 8);
822 clock_set_rate(CLOCK_ID_DISPLAY, 925, 26, 0, 12);
825 case CLOCK_OSC_FREQ_13_0: /* OSC is 13Mhz */
826 clock_set_rate(CLOCK_ID_CGENERAL, 600, 13, 0, 8);
827 clock_set_rate(CLOCK_ID_DISPLAY, 925, 13, 0, 12);
829 case CLOCK_OSC_FREQ_19_2:
832 * These are not supported. It is too early to print a
833 * message and the UART likely won't work anyway due to the
834 * oscillator being wrong.
839 /* PLLC_MISC2: Set dynramp_stepA/B. MISC2 maps to pll_out[1] */
840 writel(0x00561600, &clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_out[1]);
842 /* PLLC_MISC: Set LOCK_ENABLE */
843 pllinfo = &tegra_pll_info_table[CLOCK_ID_CGENERAL];
844 setbits_le32(&clkrst->crc_pll[CLOCK_ID_CGENERAL].pll_misc, (1 << pllinfo->lock_ena));
847 /* PLLD_MISC: Set CLKENABLE, CPCON 12, LFCON 1, and enable lock */
848 pllinfo = &tegra_pll_info_table[CLOCK_ID_DISPLAY];
849 data = (12 << pllinfo->kcp_shift) | (1 << pllinfo->kvco_shift);
850 data |= (1 << PLLD_CLKENABLE) | (1 << pllinfo->lock_ena);
851 writel(data, &clkrst->crc_pll[CLOCK_ID_DISPLAY].pll_misc);
855 void arch_timer_init(void)
857 struct sysctr_ctlr *sysctr = (struct sysctr_ctlr *)NV_PA_TSC_BASE;
860 freq = clock_get_rate(CLOCK_ID_OSC);
861 debug("%s: osc freq is %dHz [0x%08X]\n", __func__, freq, freq);
864 asm("mcr p15, 0, %0, c14, c0, 0\n" : : "r" (freq));
866 /* Only Tegra114+ has the System Counter regs */
867 debug("%s: setting CNTFID0 to 0x%08X\n", __func__, freq);
868 writel(freq, &sysctr->cntfid0);
870 val = readl(&sysctr->cntcr);
871 val |= TSC_CNTCR_ENABLE | TSC_CNTCR_HDBG;
872 writel(val, &sysctr->cntcr);
873 debug("%s: TSC CNTCR = 0x%08X\n", __func__, val);
876 #define PLLE_SS_CNTL 0x68
877 #define PLLE_SS_CNTL_SSCINCINTR(x) (((x) & 0x3f) << 24)
878 #define PLLE_SS_CNTL_SSCINC(x) (((x) & 0xff) << 16)
879 #define PLLE_SS_CNTL_SSCINVERT (1 << 15)
880 #define PLLE_SS_CNTL_SSCCENTER (1 << 14)
881 #define PLLE_SS_CNTL_SSCBYP (1 << 12)
882 #define PLLE_SS_CNTL_INTERP_RESET (1 << 11)
883 #define PLLE_SS_CNTL_BYPASS_SS (1 << 10)
884 #define PLLE_SS_CNTL_SSCMAX(x) (((x) & 0x1ff) << 0)
886 #define PLLE_BASE 0x0e8
887 #define PLLE_BASE_ENABLE (1 << 30)
888 #define PLLE_BASE_LOCK_OVERRIDE (1 << 29)
889 #define PLLE_BASE_PLDIV_CML(x) (((x) & 0xf) << 24)
890 #define PLLE_BASE_NDIV(x) (((x) & 0xff) << 8)
891 #define PLLE_BASE_MDIV(x) (((x) & 0xff) << 0)
893 #define PLLE_MISC 0x0ec
894 #define PLLE_MISC_IDDQ_SWCTL (1 << 14)
895 #define PLLE_MISC_IDDQ_OVERRIDE (1 << 13)
896 #define PLLE_MISC_LOCK_ENABLE (1 << 9)
897 #define PLLE_MISC_PTS (1 << 8)
898 #define PLLE_MISC_VREG_BG_CTRL(x) (((x) & 0x3) << 4)
899 #define PLLE_MISC_VREG_CTRL(x) (((x) & 0x3) << 2)
901 #define PLLE_AUX 0x48c
902 #define PLLE_AUX_SEQ_ENABLE (1 << 24)
903 #define PLLE_AUX_ENABLE_SWCTL (1 << 4)
905 int tegra_plle_enable(void)
907 unsigned int m = 1, n = 200, cpcon = 13;
910 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
911 value &= ~PLLE_BASE_LOCK_OVERRIDE;
912 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
914 value = readl(NV_PA_CLK_RST_BASE + PLLE_AUX);
915 value |= PLLE_AUX_ENABLE_SWCTL;
916 value &= ~PLLE_AUX_SEQ_ENABLE;
917 writel(value, NV_PA_CLK_RST_BASE + PLLE_AUX);
921 value = readl(NV_PA_CLK_RST_BASE + PLLE_MISC);
922 value |= PLLE_MISC_IDDQ_SWCTL;
923 value &= ~PLLE_MISC_IDDQ_OVERRIDE;
924 value |= PLLE_MISC_LOCK_ENABLE;
925 value |= PLLE_MISC_PTS;
926 value |= PLLE_MISC_VREG_BG_CTRL(3);
927 value |= PLLE_MISC_VREG_CTRL(2);
928 writel(value, NV_PA_CLK_RST_BASE + PLLE_MISC);
932 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
933 value |= PLLE_SS_CNTL_SSCBYP | PLLE_SS_CNTL_INTERP_RESET |
934 PLLE_SS_CNTL_BYPASS_SS;
935 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
937 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
938 value &= ~PLLE_BASE_PLDIV_CML(0xf);
939 value &= ~PLLE_BASE_NDIV(0xff);
940 value &= ~PLLE_BASE_MDIV(0xff);
941 value |= PLLE_BASE_PLDIV_CML(cpcon);
942 value |= PLLE_BASE_NDIV(n);
943 value |= PLLE_BASE_MDIV(m);
944 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
948 value = readl(NV_PA_CLK_RST_BASE + PLLE_BASE);
949 value |= PLLE_BASE_ENABLE;
950 writel(value, NV_PA_CLK_RST_BASE + PLLE_BASE);
955 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
956 value &= ~PLLE_SS_CNTL_SSCINVERT;
957 value &= ~PLLE_SS_CNTL_SSCCENTER;
959 value &= ~PLLE_SS_CNTL_SSCINCINTR(0x3f);
960 value &= ~PLLE_SS_CNTL_SSCINC(0xff);
961 value &= ~PLLE_SS_CNTL_SSCMAX(0x1ff);
963 value |= PLLE_SS_CNTL_SSCINCINTR(0x20);
964 value |= PLLE_SS_CNTL_SSCINC(0x01);
965 value |= PLLE_SS_CNTL_SSCMAX(0x25);
967 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
969 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
970 value &= ~PLLE_SS_CNTL_SSCBYP;
971 value &= ~PLLE_SS_CNTL_BYPASS_SS;
972 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
976 value = readl(NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
977 value &= ~PLLE_SS_CNTL_INTERP_RESET;
978 writel(value, NV_PA_CLK_RST_BASE + PLLE_SS_CNTL);
985 void clock_sor_enable_edp_clock(void)
989 /* uses PLLP, has a non-standard bit layout. */
990 reg = get_periph_source_reg(PERIPH_ID_SOR0);
991 setbits_le32(reg, SOR0_CLK_SEL0);
994 u32 clock_set_display_rate(u32 frequency)
997 * plld (fo) = vco >> p, where 500MHz < vco < 1000MHz
998 * = (cf * n) >> p, where 1MHz < cf < 6MHz
999 * = ((ref / m) * n) >> p
1001 * Iterate the possible values of p (3 bits, 2^7) to find out a minimum
1002 * safe vco, then find best (m, n). since m has only 5 bits, we can
1003 * iterate all possible values. Note Tegra 124 supports 11 bits for n,
1004 * but our pll_fields has only 10 bits for n.
1006 * Note values undershoot or overshoot target output frequency may not
1007 * work if the values are not in "safe" range by panel specification.
1009 u32 ref = clock_get_rate(CLOCK_ID_OSC);
1010 u32 divm, divn, divp, cpcon;
1011 u32 cf, vco, rounded_rate = frequency;
1012 u32 diff, best_diff, best_m = 0, best_n = 0, best_p;
1013 const u32 max_m = 1 << 5, max_n = 1 << 10, max_p = 1 << 3,
1014 mhz = 1000 * 1000, min_vco = 500 * mhz, max_vco = 1000 * mhz,
1015 min_cf = 1 * mhz, max_cf = 6 * mhz;
1016 int mux_bits, divider_bits, source;
1018 for (divp = 0, vco = frequency; vco < min_vco && divp < max_p; divp++)
1021 if (vco < min_vco || vco > max_vco) {
1022 printf("%s: Cannot find out a supported VCO for Frequency (%u)\n",
1023 __func__, frequency);
1030 for (divm = 1; divm < max_m && best_diff; divm++) {
1041 diff = vco - divn * cf;
1042 if (divn + 1 < max_n && diff > cf / 2) {
1047 if (diff >= best_diff)
1057 else if (best_n < 300)
1059 else if (best_n < 600)
1065 printf("%s: Failed to match output frequency %u, best difference is %u\n",
1066 __func__, frequency, best_diff);
1067 rounded_rate = (ref / best_m * best_n) >> best_p;
1070 debug("%s: PLLD=%u ref=%u, m/n/p/cpcon=%u/%u/%u/%u\n",
1071 __func__, rounded_rate, ref, best_m, best_n, best_p, cpcon);
1073 source = get_periph_clock_source(PERIPH_ID_DISP1, CLOCK_ID_DISPLAY,
1074 &mux_bits, ÷r_bits);
1075 clock_ll_set_source_bits(PERIPH_ID_DISP1, mux_bits, source);
1076 clock_set_rate(CLOCK_ID_DISPLAY, best_n, best_m, best_p, cpcon);
1078 return rounded_rate;
1081 void clock_set_up_plldp(void)
1083 struct clk_rst_ctlr *clkrst =
1084 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
1087 value = PLLDP_SS_CFG_UNDOCUMENTED | PLLDP_SS_CFG_DITHER;
1088 writel(value | PLLDP_SS_CFG_CLAMP, &clkrst->crc_plldp_ss_cfg);
1089 clock_start_pll(CLOCK_ID_DP, 1, 90, 3, 0, 0);
1090 writel(value, &clkrst->crc_plldp_ss_cfg);
1093 struct clk_pll_simple *clock_get_simple_pll(enum clock_id clkid)
1095 struct clk_rst_ctlr *clkrst =
1096 (struct clk_rst_ctlr *)NV_PA_CLK_RST_BASE;
1098 if (clkid == CLOCK_ID_DP)
1099 return &clkrst->plldp;