2 * Copyright 2018 Advanced Micro Devices, Inc.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20 * OTHER DEALINGS IN THE SOFTWARE.
27 #include "clk_mgr_internal.h"
30 #include "dcn20/dcn20_clk_mgr.h"
31 #include "rn_clk_mgr.h"
34 #include "dce100/dce_clk_mgr.h"
35 #include "rn_clk_mgr_vbios_smu.h"
36 #include "reg_helper.h"
37 #include "core_types.h"
38 #include "dm_helpers.h"
40 #include "atomfirmware.h"
41 #include "clk/clk_10_0_2_offset.h"
42 #include "clk/clk_10_0_2_sh_mask.h"
43 #include "renoir_ip_offset.h"
48 #define LPDDR_MEM_RETRAIN_LATENCY 4.977 /* Number obtained from LPDDR4 Training Counter Requirement doc */
49 #define SMU_VER_55_51_0 0x373300 /* SMU Version that is able to set DISPCLK below 100MHz */
53 #define REG(reg_name) \
54 (CLK_BASE.instance[0].segment[mm ## reg_name ## _BASE_IDX] + mm ## reg_name)
57 /* TODO: evaluate how to lower or disable all dcn clocks in screen off case */
58 int rn_get_active_display_cnt_wa(
60 struct dc_state *context)
63 bool tmds_present = false;
66 for (i = 0; i < context->stream_count; i++) {
67 const struct dc_stream_state *stream = context->streams[i];
69 if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A ||
70 stream->signal == SIGNAL_TYPE_DVI_SINGLE_LINK ||
71 stream->signal == SIGNAL_TYPE_DVI_DUAL_LINK)
75 for (i = 0; i < dc->link_count; i++) {
76 const struct dc_link *link = dc->links[i];
79 * Only notify active stream or virtual stream.
80 * Need to notify virtual stream to work around
81 * headless case. HPD does not fire when system is in
84 /* abusing the fact that the dig and phy are coupled to see if the phy is enabled */
85 if (link->connector_signal == SIGNAL_TYPE_VIRTUAL ||
86 link->link_enc->funcs->is_dig_enabled(link->link_enc))
90 /* WA for hang on HDMI after display off back back on*/
91 if (display_count == 0 && tmds_present)
97 void rn_set_low_power_state(struct clk_mgr *clk_mgr_base)
99 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
101 rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_LOW_POWER);
102 /* update power state */
103 clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
106 void rn_update_clocks(struct clk_mgr *clk_mgr_base,
107 struct dc_state *context,
110 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
111 struct dc_clocks *new_clocks = &context->bw_ctx.bw.dcn.clk;
112 struct dc *dc = clk_mgr_base->ctx->dc;
114 bool update_dppclk = false;
115 bool update_dispclk = false;
116 bool dpp_clock_lowered = false;
118 struct dmcu *dmcu = clk_mgr_base->ctx->dc->res_pool->dmcu;
120 if (dc->work_arounds.skip_clock_update)
124 * if it is safe to lower, but we are already in the lower state, we don't have to do anything
125 * also if safe to lower is false, we just go in the higher state
128 /* check that we're not already in lower */
129 if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_LOW_POWER) {
131 display_count = rn_get_active_display_cnt_wa(dc, context);
132 /* if we can go lower, go lower */
133 if (display_count == 0) {
134 rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_LOW_POWER);
135 /* update power state */
136 clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_LOW_POWER;
140 /* check that we're not already in D0 */
141 if (clk_mgr_base->clks.pwr_state != DCN_PWR_STATE_MISSION_MODE) {
142 rn_vbios_smu_set_dcn_low_power_state(clk_mgr, DCN_PWR_STATE_MISSION_MODE);
143 /* update power state */
144 clk_mgr_base->clks.pwr_state = DCN_PWR_STATE_MISSION_MODE;
148 if (should_set_clock(safe_to_lower, new_clocks->dcfclk_khz, clk_mgr_base->clks.dcfclk_khz)) {
149 clk_mgr_base->clks.dcfclk_khz = new_clocks->dcfclk_khz;
150 rn_vbios_smu_set_hard_min_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_khz);
153 if (should_set_clock(safe_to_lower,
154 new_clocks->dcfclk_deep_sleep_khz, clk_mgr_base->clks.dcfclk_deep_sleep_khz)) {
155 clk_mgr_base->clks.dcfclk_deep_sleep_khz = new_clocks->dcfclk_deep_sleep_khz;
156 rn_vbios_smu_set_min_deep_sleep_dcfclk(clk_mgr, clk_mgr_base->clks.dcfclk_deep_sleep_khz);
159 // workaround: Limit dppclk to 100Mhz to avoid lower eDP panel switch to plus 4K monitor underflow.
160 // Do not adjust dppclk if dppclk is 0 to avoid unexpected result
161 if (!IS_DIAG_DC(dc->ctx->dce_environment)) {
162 if (new_clocks->dppclk_khz < 100000 && new_clocks->dppclk_khz > 0)
163 new_clocks->dppclk_khz = 100000;
166 if (should_set_clock(safe_to_lower, new_clocks->dppclk_khz, clk_mgr->base.clks.dppclk_khz)) {
167 if (clk_mgr->base.clks.dppclk_khz > new_clocks->dppclk_khz)
168 dpp_clock_lowered = true;
169 clk_mgr_base->clks.dppclk_khz = new_clocks->dppclk_khz;
170 update_dppclk = true;
173 if (should_set_clock(safe_to_lower, new_clocks->dispclk_khz, clk_mgr_base->clks.dispclk_khz)) {
174 clk_mgr_base->clks.dispclk_khz = new_clocks->dispclk_khz;
175 rn_vbios_smu_set_dispclk(clk_mgr, clk_mgr_base->clks.dispclk_khz);
177 update_dispclk = true;
180 if (dpp_clock_lowered) {
181 // increase per DPP DTO before lowering global dppclk
182 dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
183 rn_vbios_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
185 // increase global DPPCLK before lowering per DPP DTO
186 if (update_dppclk || update_dispclk)
187 rn_vbios_smu_set_dppclk(clk_mgr, clk_mgr_base->clks.dppclk_khz);
188 // always update dtos unless clock is lowered and not safe to lower
189 if (new_clocks->dppclk_khz >= dc->current_state->bw_ctx.bw.dcn.clk.dppclk_khz)
190 dcn20_update_clocks_update_dpp_dto(clk_mgr, context, safe_to_lower);
193 if (update_dispclk &&
194 dmcu && dmcu->funcs->is_dmcu_initialized(dmcu)) {
195 /*update dmcu for wait_loop count*/
196 dmcu->funcs->set_psr_wait_loop(dmcu,
197 clk_mgr_base->clks.dispclk_khz / 1000 / 7);
202 static int get_vco_frequency_from_reg(struct clk_mgr_internal *clk_mgr)
204 /* get FbMult value */
205 struct fixed31_32 pll_req;
206 unsigned int fbmult_frac_val = 0;
207 unsigned int fbmult_int_val = 0;
211 * Register value of fbmult is in 8.16 format, we are converting to 31.32
212 * to leverage the fix point operations available in driver
215 REG_GET(CLK1_CLK_PLL_REQ, FbMult_frac, &fbmult_frac_val); /* 16 bit fractional part*/
216 REG_GET(CLK1_CLK_PLL_REQ, FbMult_int, &fbmult_int_val); /* 8 bit integer part */
218 pll_req = dc_fixpt_from_int(fbmult_int_val);
221 * since fractional part is only 16 bit in register definition but is 32 bit
222 * in our fix point definiton, need to shift left by 16 to obtain correct value
224 pll_req.value |= fbmult_frac_val << 16;
226 /* multiply by REFCLK period */
227 pll_req = dc_fixpt_mul_int(pll_req, clk_mgr->dfs_ref_freq_khz);
229 /* integer part is now VCO frequency in kHz */
230 return dc_fixpt_floor(pll_req);
233 static void rn_dump_clk_registers_internal(struct rn_clk_internal *internal, struct clk_mgr *clk_mgr_base)
235 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
237 internal->CLK1_CLK3_CURRENT_CNT = REG_READ(CLK1_CLK3_CURRENT_CNT);
238 internal->CLK1_CLK3_BYPASS_CNTL = REG_READ(CLK1_CLK3_BYPASS_CNTL);
240 internal->CLK1_CLK3_DS_CNTL = REG_READ(CLK1_CLK3_DS_CNTL); //dcf deep sleep divider
241 internal->CLK1_CLK3_ALLOW_DS = REG_READ(CLK1_CLK3_ALLOW_DS);
243 internal->CLK1_CLK1_CURRENT_CNT = REG_READ(CLK1_CLK1_CURRENT_CNT);
244 internal->CLK1_CLK1_BYPASS_CNTL = REG_READ(CLK1_CLK1_BYPASS_CNTL);
246 internal->CLK1_CLK2_CURRENT_CNT = REG_READ(CLK1_CLK2_CURRENT_CNT);
247 internal->CLK1_CLK2_BYPASS_CNTL = REG_READ(CLK1_CLK2_BYPASS_CNTL);
249 internal->CLK1_CLK0_CURRENT_CNT = REG_READ(CLK1_CLK0_CURRENT_CNT);
250 internal->CLK1_CLK0_BYPASS_CNTL = REG_READ(CLK1_CLK0_BYPASS_CNTL);
253 /* This function collect raw clk register values */
254 static void rn_dump_clk_registers(struct clk_state_registers_and_bypass *regs_and_bypass,
255 struct clk_mgr *clk_mgr_base, struct clk_log_info *log_info)
257 struct rn_clk_internal internal = {0};
258 char *bypass_clks[5] = {"0x0 DFS", "0x1 REFCLK", "0x2 ERROR", "0x3 400 FCH", "0x4 600 FCH"};
259 unsigned int chars_printed = 0;
260 unsigned int remaining_buffer = log_info->bufSize;
262 rn_dump_clk_registers_internal(&internal, clk_mgr_base);
264 regs_and_bypass->dcfclk = internal.CLK1_CLK3_CURRENT_CNT / 10;
265 regs_and_bypass->dcf_deep_sleep_divider = internal.CLK1_CLK3_DS_CNTL / 10;
266 regs_and_bypass->dcf_deep_sleep_allow = internal.CLK1_CLK3_ALLOW_DS;
267 regs_and_bypass->dprefclk = internal.CLK1_CLK2_CURRENT_CNT / 10;
268 regs_and_bypass->dispclk = internal.CLK1_CLK0_CURRENT_CNT / 10;
269 regs_and_bypass->dppclk = internal.CLK1_CLK1_CURRENT_CNT / 10;
271 regs_and_bypass->dppclk_bypass = internal.CLK1_CLK1_BYPASS_CNTL & 0x0007;
272 if (regs_and_bypass->dppclk_bypass < 0 || regs_and_bypass->dppclk_bypass > 4)
273 regs_and_bypass->dppclk_bypass = 0;
274 regs_and_bypass->dcfclk_bypass = internal.CLK1_CLK3_BYPASS_CNTL & 0x0007;
275 if (regs_and_bypass->dcfclk_bypass < 0 || regs_and_bypass->dcfclk_bypass > 4)
276 regs_and_bypass->dcfclk_bypass = 0;
277 regs_and_bypass->dispclk_bypass = internal.CLK1_CLK0_BYPASS_CNTL & 0x0007;
278 if (regs_and_bypass->dispclk_bypass < 0 || regs_and_bypass->dispclk_bypass > 4)
279 regs_and_bypass->dispclk_bypass = 0;
280 regs_and_bypass->dprefclk_bypass = internal.CLK1_CLK2_BYPASS_CNTL & 0x0007;
281 if (regs_and_bypass->dprefclk_bypass < 0 || regs_and_bypass->dprefclk_bypass > 4)
282 regs_and_bypass->dprefclk_bypass = 0;
284 if (log_info->enabled) {
285 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "clk_type,clk_value,deepsleep_cntl,deepsleep_allow,bypass\n");
286 remaining_buffer -= chars_printed;
287 *log_info->sum_chars_printed += chars_printed;
288 log_info->pBuf += chars_printed;
290 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "dcfclk,%d,%d,%d,%s\n",
291 regs_and_bypass->dcfclk,
292 regs_and_bypass->dcf_deep_sleep_divider,
293 regs_and_bypass->dcf_deep_sleep_allow,
294 bypass_clks[(int) regs_and_bypass->dcfclk_bypass]);
295 remaining_buffer -= chars_printed;
296 *log_info->sum_chars_printed += chars_printed;
297 log_info->pBuf += chars_printed;
299 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "dprefclk,%d,N/A,N/A,%s\n",
300 regs_and_bypass->dprefclk,
301 bypass_clks[(int) regs_and_bypass->dprefclk_bypass]);
302 remaining_buffer -= chars_printed;
303 *log_info->sum_chars_printed += chars_printed;
304 log_info->pBuf += chars_printed;
306 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "dispclk,%d,N/A,N/A,%s\n",
307 regs_and_bypass->dispclk,
308 bypass_clks[(int) regs_and_bypass->dispclk_bypass]);
309 remaining_buffer -= chars_printed;
310 *log_info->sum_chars_printed += chars_printed;
311 log_info->pBuf += chars_printed;
314 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "SPLIT\n");
315 remaining_buffer -= chars_printed;
316 *log_info->sum_chars_printed += chars_printed;
317 log_info->pBuf += chars_printed;
320 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "reg_name,value,clk_type\n");
321 remaining_buffer -= chars_printed;
322 *log_info->sum_chars_printed += chars_printed;
323 log_info->pBuf += chars_printed;
325 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK3_CURRENT_CNT,%d,dcfclk\n",
326 internal.CLK1_CLK3_CURRENT_CNT);
327 remaining_buffer -= chars_printed;
328 *log_info->sum_chars_printed += chars_printed;
329 log_info->pBuf += chars_printed;
331 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK3_DS_CNTL,%d,dcf_deep_sleep_divider\n",
332 internal.CLK1_CLK3_DS_CNTL);
333 remaining_buffer -= chars_printed;
334 *log_info->sum_chars_printed += chars_printed;
335 log_info->pBuf += chars_printed;
337 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK3_ALLOW_DS,%d,dcf_deep_sleep_allow\n",
338 internal.CLK1_CLK3_ALLOW_DS);
339 remaining_buffer -= chars_printed;
340 *log_info->sum_chars_printed += chars_printed;
341 log_info->pBuf += chars_printed;
343 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK2_CURRENT_CNT,%d,dprefclk\n",
344 internal.CLK1_CLK2_CURRENT_CNT);
345 remaining_buffer -= chars_printed;
346 *log_info->sum_chars_printed += chars_printed;
347 log_info->pBuf += chars_printed;
349 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK0_CURRENT_CNT,%d,dispclk\n",
350 internal.CLK1_CLK0_CURRENT_CNT);
351 remaining_buffer -= chars_printed;
352 *log_info->sum_chars_printed += chars_printed;
353 log_info->pBuf += chars_printed;
355 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK1_CURRENT_CNT,%d,dppclk\n",
356 internal.CLK1_CLK1_CURRENT_CNT);
357 remaining_buffer -= chars_printed;
358 *log_info->sum_chars_printed += chars_printed;
359 log_info->pBuf += chars_printed;
361 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK3_BYPASS_CNTL,%d,dcfclk_bypass\n",
362 internal.CLK1_CLK3_BYPASS_CNTL);
363 remaining_buffer -= chars_printed;
364 *log_info->sum_chars_printed += chars_printed;
365 log_info->pBuf += chars_printed;
367 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK2_BYPASS_CNTL,%d,dprefclk_bypass\n",
368 internal.CLK1_CLK2_BYPASS_CNTL);
369 remaining_buffer -= chars_printed;
370 *log_info->sum_chars_printed += chars_printed;
371 log_info->pBuf += chars_printed;
373 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK0_BYPASS_CNTL,%d,dispclk_bypass\n",
374 internal.CLK1_CLK0_BYPASS_CNTL);
375 remaining_buffer -= chars_printed;
376 *log_info->sum_chars_printed += chars_printed;
377 log_info->pBuf += chars_printed;
379 chars_printed = snprintf_count(log_info->pBuf, remaining_buffer, "CLK1_CLK1_BYPASS_CNTL,%d,dppclk_bypass\n",
380 internal.CLK1_CLK1_BYPASS_CNTL);
381 remaining_buffer -= chars_printed;
382 *log_info->sum_chars_printed += chars_printed;
383 log_info->pBuf += chars_printed;
387 /* This function produce translated logical clk state values*/
388 void rn_get_clk_states(struct clk_mgr *clk_mgr_base, struct clk_states *s)
390 struct clk_state_registers_and_bypass sb = { 0 };
391 struct clk_log_info log_info = { 0 };
393 rn_dump_clk_registers(&sb, clk_mgr_base, &log_info);
395 s->dprefclk_khz = sb.dprefclk * 1000;
398 void rn_enable_pme_wa(struct clk_mgr *clk_mgr_base)
400 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
402 rn_vbios_smu_enable_pme_wa(clk_mgr);
405 void rn_init_clocks(struct clk_mgr *clk_mgr)
407 memset(&(clk_mgr->clks), 0, sizeof(struct dc_clocks));
408 // Assumption is that boot state always supports pstate
409 clk_mgr->clks.p_state_change_support = true;
410 clk_mgr->clks.prev_p_state_change_support = true;
411 clk_mgr->clks.pwr_state = DCN_PWR_STATE_UNKNOWN;
414 static void build_watermark_ranges(struct clk_bw_params *bw_params, struct pp_smu_wm_range_sets *ranges)
416 int i, num_valid_sets;
420 for (i = 0; i < WM_SET_COUNT; i++) {
421 /* skip empty entries, the smu array has no holes*/
422 if (!bw_params->wm_table.entries[i].valid)
425 ranges->reader_wm_sets[num_valid_sets].wm_inst = bw_params->wm_table.entries[i].wm_inst;
426 ranges->reader_wm_sets[num_valid_sets].wm_type = bw_params->wm_table.entries[i].wm_type;
427 /* We will not select WM based on fclk, so leave it as unconstrained */
428 ranges->reader_wm_sets[num_valid_sets].min_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
429 ranges->reader_wm_sets[num_valid_sets].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
430 /* dcfclk wil be used to select WM*/
432 if (ranges->reader_wm_sets[num_valid_sets].wm_type == WM_TYPE_PSTATE_CHG) {
434 ranges->reader_wm_sets[num_valid_sets].min_drain_clk_mhz = 0;
436 /* add 1 to make it non-overlapping with next lvl */
437 ranges->reader_wm_sets[num_valid_sets].min_drain_clk_mhz = bw_params->clk_table.entries[i - 1].dcfclk_mhz + 1;
439 ranges->reader_wm_sets[num_valid_sets].max_drain_clk_mhz = bw_params->clk_table.entries[i].dcfclk_mhz;
442 /* unconstrained for memory retraining */
443 ranges->reader_wm_sets[num_valid_sets].min_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
444 ranges->reader_wm_sets[num_valid_sets].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
446 /* Modify previous watermark range to cover up to max */
447 ranges->reader_wm_sets[num_valid_sets - 1].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
452 ASSERT(num_valid_sets != 0); /* Must have at least one set of valid watermarks */
453 ranges->num_reader_wm_sets = num_valid_sets;
455 /* modify the min and max to make sure we cover the whole range*/
456 ranges->reader_wm_sets[0].min_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
457 ranges->reader_wm_sets[0].min_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
458 ranges->reader_wm_sets[ranges->num_reader_wm_sets - 1].max_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
459 ranges->reader_wm_sets[ranges->num_reader_wm_sets - 1].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
461 /* This is for writeback only, does not matter currently as no writeback support*/
462 ranges->num_writer_wm_sets = 1;
463 ranges->writer_wm_sets[0].wm_inst = WM_A;
464 ranges->writer_wm_sets[0].min_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
465 ranges->writer_wm_sets[0].max_fill_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
466 ranges->writer_wm_sets[0].min_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MIN;
467 ranges->writer_wm_sets[0].max_drain_clk_mhz = PP_SMU_WM_SET_RANGE_CLK_UNCONSTRAINED_MAX;
471 static void rn_notify_wm_ranges(struct clk_mgr *clk_mgr_base)
473 struct dc_debug_options *debug = &clk_mgr_base->ctx->dc->debug;
474 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
475 struct pp_smu_funcs *pp_smu = clk_mgr->pp_smu;
477 if (!debug->disable_pplib_wm_range) {
478 build_watermark_ranges(clk_mgr_base->bw_params, &clk_mgr_base->ranges);
480 /* Notify PP Lib/SMU which Watermarks to use for which clock ranges */
481 if (pp_smu && pp_smu->rn_funcs.set_wm_ranges)
482 pp_smu->rn_funcs.set_wm_ranges(&pp_smu->rn_funcs.pp_smu, &clk_mgr_base->ranges);
487 static bool rn_are_clock_states_equal(struct dc_clocks *a,
490 if (a->dispclk_khz != b->dispclk_khz)
492 else if (a->dppclk_khz != b->dppclk_khz)
494 else if (a->dcfclk_khz != b->dcfclk_khz)
496 else if (a->dcfclk_deep_sleep_khz != b->dcfclk_deep_sleep_khz)
503 /* Notify clk_mgr of a change in link rate, update phyclk frequency if necessary */
504 static void rn_notify_link_rate_change(struct clk_mgr *clk_mgr_base, struct dc_link *link)
506 struct clk_mgr_internal *clk_mgr = TO_CLK_MGR_INTERNAL(clk_mgr_base);
507 unsigned int i, max_phyclk_req = 0;
509 clk_mgr->cur_phyclk_req_table[link->link_index] = link->cur_link_settings.link_rate * LINK_RATE_REF_FREQ_IN_KHZ;
511 for (i = 0; i < MAX_PIPES * 2; i++) {
512 if (clk_mgr->cur_phyclk_req_table[i] > max_phyclk_req)
513 max_phyclk_req = clk_mgr->cur_phyclk_req_table[i];
516 if (max_phyclk_req != clk_mgr_base->clks.phyclk_khz) {
517 clk_mgr_base->clks.phyclk_khz = max_phyclk_req;
518 rn_vbios_smu_set_phyclk(clk_mgr, clk_mgr_base->clks.phyclk_khz);
522 static struct clk_mgr_funcs dcn21_funcs = {
523 .get_dp_ref_clk_frequency = dce12_get_dp_ref_freq_khz,
524 .update_clocks = rn_update_clocks,
525 .init_clocks = rn_init_clocks,
526 .enable_pme_wa = rn_enable_pme_wa,
527 .are_clock_states_equal = rn_are_clock_states_equal,
528 .set_low_power_state = rn_set_low_power_state,
529 .notify_wm_ranges = rn_notify_wm_ranges,
530 .notify_link_rate_change = rn_notify_link_rate_change,
533 static struct clk_bw_params rn_bw_params = {
534 .vram_type = Ddr4MemType,
573 static struct wm_table ddr4_wm_table = {
577 .wm_type = WM_TYPE_PSTATE_CHG,
578 .pstate_latency_us = 11.72,
579 .sr_exit_time_us = 6.09,
580 .sr_enter_plus_exit_time_us = 7.14,
585 .wm_type = WM_TYPE_PSTATE_CHG,
586 .pstate_latency_us = 11.72,
587 .sr_exit_time_us = 10.12,
588 .sr_enter_plus_exit_time_us = 11.48,
593 .wm_type = WM_TYPE_PSTATE_CHG,
594 .pstate_latency_us = 11.72,
595 .sr_exit_time_us = 10.12,
596 .sr_enter_plus_exit_time_us = 11.48,
601 .wm_type = WM_TYPE_PSTATE_CHG,
602 .pstate_latency_us = 11.72,
603 .sr_exit_time_us = 10.12,
604 .sr_enter_plus_exit_time_us = 11.48,
610 static struct wm_table lpddr4_wm_table = {
614 .wm_type = WM_TYPE_PSTATE_CHG,
615 .pstate_latency_us = 11.65333,
616 .sr_exit_time_us = 5.32,
617 .sr_enter_plus_exit_time_us = 6.38,
622 .wm_type = WM_TYPE_PSTATE_CHG,
623 .pstate_latency_us = 11.65333,
624 .sr_exit_time_us = 9.82,
625 .sr_enter_plus_exit_time_us = 11.196,
630 .wm_type = WM_TYPE_PSTATE_CHG,
631 .pstate_latency_us = 11.65333,
632 .sr_exit_time_us = 9.89,
633 .sr_enter_plus_exit_time_us = 11.24,
638 .wm_type = WM_TYPE_PSTATE_CHG,
639 .pstate_latency_us = 11.65333,
640 .sr_exit_time_us = 9.748,
641 .sr_enter_plus_exit_time_us = 11.102,
647 static struct wm_table lpddr4_wm_table_with_disabled_ppt = {
651 .wm_type = WM_TYPE_PSTATE_CHG,
652 .pstate_latency_us = 11.65333,
653 .sr_exit_time_us = 8.32,
654 .sr_enter_plus_exit_time_us = 9.38,
659 .wm_type = WM_TYPE_PSTATE_CHG,
660 .pstate_latency_us = 11.65333,
661 .sr_exit_time_us = 9.82,
662 .sr_enter_plus_exit_time_us = 11.196,
667 .wm_type = WM_TYPE_PSTATE_CHG,
668 .pstate_latency_us = 11.65333,
669 .sr_exit_time_us = 9.89,
670 .sr_enter_plus_exit_time_us = 11.24,
675 .wm_type = WM_TYPE_PSTATE_CHG,
676 .pstate_latency_us = 11.65333,
677 .sr_exit_time_us = 9.748,
678 .sr_enter_plus_exit_time_us = 11.102,
684 static unsigned int find_dcfclk_for_voltage(struct dpm_clocks *clock_table, unsigned int voltage)
688 for (i = 0; i < PP_SMU_NUM_DCFCLK_DPM_LEVELS; i++) {
689 if (clock_table->DcfClocks[i].Vol == voltage)
690 return clock_table->DcfClocks[i].Freq;
697 static void rn_clk_mgr_helper_populate_bw_params(struct clk_bw_params *bw_params, struct dpm_clocks *clock_table, struct integrated_info *bios_info)
703 ASSERT(PP_SMU_NUM_FCLK_DPM_LEVELS <= MAX_NUM_DPM_LVL);
705 /* Find lowest DPM, FCLK is filled in reverse order*/
707 for (i = PP_SMU_NUM_FCLK_DPM_LEVELS - 1; i >= 0; i--) {
708 if (clock_table->FClocks[i].Freq != 0 && clock_table->FClocks[i].Vol != 0) {
715 /* clock table is all 0s, just use our own hardcode */
720 bw_params->clk_table.num_entries = j + 1;
722 for (i = 0; i < bw_params->clk_table.num_entries; i++, j--) {
723 bw_params->clk_table.entries[i].fclk_mhz = clock_table->FClocks[j].Freq;
724 bw_params->clk_table.entries[i].memclk_mhz = clock_table->MemClocks[j].Freq;
725 bw_params->clk_table.entries[i].voltage = clock_table->FClocks[j].Vol;
726 bw_params->clk_table.entries[i].dcfclk_mhz = find_dcfclk_for_voltage(clock_table, clock_table->FClocks[j].Vol);
729 bw_params->vram_type = bios_info->memory_type;
730 bw_params->num_channels = bios_info->ma_channel_number;
732 for (i = 0; i < WM_SET_COUNT; i++) {
733 bw_params->wm_table.entries[i].wm_inst = i;
735 if (i >= bw_params->clk_table.num_entries) {
736 bw_params->wm_table.entries[i].valid = false;
740 bw_params->wm_table.entries[i].wm_type = WM_TYPE_PSTATE_CHG;
741 bw_params->wm_table.entries[i].valid = true;
744 if (bw_params->vram_type == LpDdr4MemType) {
746 * WM set D will be re-purposed for memory retraining
748 bw_params->wm_table.entries[WM_D].pstate_latency_us = LPDDR_MEM_RETRAIN_LATENCY;
749 bw_params->wm_table.entries[WM_D].wm_inst = WM_D;
750 bw_params->wm_table.entries[WM_D].wm_type = WM_TYPE_RETRAINING;
751 bw_params->wm_table.entries[WM_D].valid = true;
756 void rn_clk_mgr_construct(
757 struct dc_context *ctx,
758 struct clk_mgr_internal *clk_mgr,
759 struct pp_smu_funcs *pp_smu,
762 struct dc_debug_options *debug = &ctx->dc->debug;
763 struct dpm_clocks clock_table = { 0 };
764 enum pp_smu_status status = 0;
766 clk_mgr->base.ctx = ctx;
767 clk_mgr->base.funcs = &dcn21_funcs;
769 clk_mgr->pp_smu = pp_smu;
771 clk_mgr->dccg = dccg;
772 clk_mgr->dfs_bypass_disp_clk = 0;
774 clk_mgr->dprefclk_ss_percentage = 0;
775 clk_mgr->dprefclk_ss_divider = 1000;
776 clk_mgr->ss_on_dprefclk = false;
777 clk_mgr->dfs_ref_freq_khz = 48000;
779 clk_mgr->smu_ver = rn_vbios_smu_get_smu_version(clk_mgr);
781 if (IS_FPGA_MAXIMUS_DC(ctx->dce_environment)) {
782 dcn21_funcs.update_clocks = dcn2_update_clocks_fpga;
783 clk_mgr->base.dentist_vco_freq_khz = 3600000;
785 struct clk_log_info log_info = {0};
787 clk_mgr->periodic_retraining_disabled = rn_vbios_smu_is_periodic_retraining_disabled(clk_mgr);
789 /* SMU Version 55.51.0 and up no longer have an issue
790 * that needs to limit minimum dispclk */
791 if (clk_mgr->smu_ver >= SMU_VER_55_51_0)
792 debug->min_disp_clk_khz = 0;
794 /* TODO: Check we get what we expect during bringup */
795 clk_mgr->base.dentist_vco_freq_khz = get_vco_frequency_from_reg(clk_mgr);
797 /* in case we don't get a value from the register, use default */
798 if (clk_mgr->base.dentist_vco_freq_khz == 0)
799 clk_mgr->base.dentist_vco_freq_khz = 3600000;
801 if (ctx->dc_bios->integrated_info->memory_type == LpDdr4MemType) {
802 if (clk_mgr->periodic_retraining_disabled) {
803 rn_bw_params.wm_table = lpddr4_wm_table_with_disabled_ppt;
805 rn_bw_params.wm_table = lpddr4_wm_table;
808 rn_bw_params.wm_table = ddr4_wm_table;
810 /* Saved clocks configured at boot for debug purposes */
811 rn_dump_clk_registers(&clk_mgr->base.boot_snapshot, &clk_mgr->base, &log_info);
814 clk_mgr->base.dprefclk_khz = 600000;
815 dce_clock_read_ss_info(clk_mgr);
818 clk_mgr->base.bw_params = &rn_bw_params;
820 if (pp_smu && pp_smu->rn_funcs.get_dpm_clock_table) {
821 status = pp_smu->rn_funcs.get_dpm_clock_table(&pp_smu->rn_funcs.pp_smu, &clock_table);
823 if (status == PP_SMU_RESULT_OK &&
824 ctx->dc_bios && ctx->dc_bios->integrated_info) {
825 rn_clk_mgr_helper_populate_bw_params (clk_mgr->base.bw_params, &clock_table, ctx->dc_bios->integrated_info);
829 if (!IS_FPGA_MAXIMUS_DC(ctx->dce_environment) && clk_mgr->smu_ver >= 0x00371500) {
830 /* enable powerfeatures when displaycount goes to 0 */
831 rn_vbios_smu_enable_48mhz_tmdp_refclk_pwrdwn(clk_mgr, !debug->disable_48mhz_pwrdwn);