test/dm/scmi.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2020, Linaro Limited
   4  *
   5  * Tests scmi_agent uclass and the SCMI drivers implemented in other
   6  * uclass devices probe when a SCMI server exposes resources.
   7  *
   8  * Note in test.dts the protocol@10 node in scmi node. Protocol 0x10 is not
   9  * implemented in U-Boot SCMI components but the implementation is expected
  10  * to not complain on unknown protocol IDs, as long as it is not used. Note
  11  * in test.dts tests that SCMI drivers probing does not fail for such an
  12  * unknown SCMI protocol ID.
  13  */
  14
  15 #include <clk.h>
  16 #include <dm.h>
  17 #include <reset.h>
  18 #include <scmi_agent.h>
  19 #include <scmi_agent-uclass.h>
  20 #include <scmi_protocols.h>
  21 #include <stdio.h>
  22 #include <asm/scmi_test.h>
  23 #include <dm/device-internal.h>
  24 #include <dm/test.h>
  25 #include <power/regulator.h>
  26 #include <test/ut.h>
  27
  28 static int ut_assert_scmi_state_postprobe(struct unit_test_state *uts,
  29                                           struct sandbox_scmi_agent *agent,
  30                                           struct udevice *dev)
  31 {
  32         struct sandbox_scmi_devices *scmi_devices;
  33
  34         /* Device references to check context against test sequence */
  35         scmi_devices = sandbox_scmi_devices_ctx(dev);
  36         ut_assertnonnull(scmi_devices);
  37         ut_asserteq(2, scmi_devices->clk_count);
  38         ut_asserteq(1, scmi_devices->reset_count);
  39         ut_asserteq(2, scmi_devices->regul_count);
  40
  41         /* State of the simulated SCMI server exposed */
  42         ut_asserteq(3, agent->clk_count);
  43         ut_assertnonnull(agent->clk);
  44         ut_asserteq(1, agent->reset_count);
  45         ut_assertnonnull(agent->reset);
  46         ut_asserteq(2, agent->voltd_count);
  47         ut_assertnonnull(agent->voltd);
  48
  49         return 0;
  50 }
  51
  52 static int load_sandbox_scmi_test_devices(struct unit_test_state *uts,
  53                                           struct sandbox_scmi_agent **ctx,
  54                                           struct udevice **dev)
  55 {
  56         struct udevice *agent_dev;
  57
  58         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
  59                                               &agent_dev));
  60         ut_assertnonnull(agent_dev);
  61
  62         *ctx = sandbox_scmi_agent_ctx(agent_dev);
  63         ut_assertnonnull(*ctx);
  64
  65         /* probe */
  66         ut_assertok(uclass_get_device_by_name(UCLASS_MISC, "sandbox_scmi",
  67                                               dev));
  68         ut_assertnonnull(*dev);
  69
  70         return ut_assert_scmi_state_postprobe(uts, *ctx, *dev);
  71 }
  72
  73 static int release_sandbox_scmi_test_devices(struct unit_test_state *uts,
  74                                              struct udevice *dev)
  75 {
  76         /* un-probe */
  77         ut_assertok(device_remove(dev, DM_REMOVE_NORMAL));
  78
  79         return 0;
  80 }
  81
  82 /*
  83  * Test SCMI states when loading and releasing resources
  84  * related to SCMI drivers.
  85  */
  86 static int dm_test_scmi_sandbox_agent(struct unit_test_state *uts)
  87 {
  88         struct sandbox_scmi_agent *ctx;
  89         struct udevice *dev = NULL;
  90         int ret;
  91
  92         ret = load_sandbox_scmi_test_devices(uts, &ctx, &dev);
  93         if (!ret)
  94                 ret = release_sandbox_scmi_test_devices(uts, dev);
  95
  96         return ret;
  97 }
  98 DM_TEST(dm_test_scmi_sandbox_agent, UTF_SCAN_FDT);
  99
 100 static int dm_test_scmi_base(struct unit_test_state *uts)
 101 {
 102         struct udevice *agent_dev, *base;
 103         struct scmi_agent_priv *priv;
 104         u32 version, num_agents, num_protocols, impl_version;
 105         u32 attributes, agent_id;
 106         u8 *vendor, *agent_name, *protocols;
 107         int ret;
 108
 109         /* preparation */
 110         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
 111                                               &agent_dev));
 112         ut_assertnonnull(agent_dev);
 113         ut_assertnonnull(priv = dev_get_uclass_plat(agent_dev));
 114         ut_assertnonnull(base = scmi_get_protocol(agent_dev,
 115                                                   SCMI_PROTOCOL_ID_BASE));
 116
 117         /* version */
 118         ret = scmi_base_protocol_version(base, &version);
 119         ut_assertok(ret);
 120         ut_asserteq(priv->version, version);
 121
 122         /* protocol attributes */
 123         ret = scmi_base_protocol_attrs(base, &num_agents, &num_protocols);
 124         ut_assertok(ret);
 125         ut_asserteq(priv->num_agents, num_agents);
 126         ut_asserteq(priv->num_protocols, num_protocols);
 127
 128         /* discover vendor */
 129         ret = scmi_base_discover_vendor(base, &vendor);
 130         ut_assertok(ret);
 131         ut_asserteq_str(priv->vendor, vendor);
 132         free(vendor);
 133
 134         /* message attributes */
 135         ret = scmi_base_protocol_message_attrs(base,
 136                                                SCMI_BASE_DISCOVER_SUB_VENDOR,
 137                                                &attributes);
 138         ut_assertok(ret);
 139         ut_assertok(attributes);
 140
 141         /* discover sub vendor */
 142         ret = scmi_base_discover_sub_vendor(base, &vendor);
 143         ut_assertok(ret);
 144         ut_asserteq_str(priv->sub_vendor, vendor);
 145         free(vendor);
 146
 147         /* impl version */
 148         ret = scmi_base_discover_impl_version(base, &impl_version);
 149         ut_assertok(ret);
 150         ut_asserteq(priv->impl_version, impl_version);
 151
 152         /* discover agent (my self) */
 153         ret = scmi_base_discover_agent(base, 0xffffffff, &agent_id,
 154                                        &agent_name);
 155         ut_assertok(ret);
 156         ut_asserteq(priv->agent_id, agent_id);
 157         ut_asserteq_str(priv->agent_name, agent_name);
 158         free(agent_name);
 159
 160         /* discover protocols */
 161         ret = scmi_base_discover_list_protocols(base, &protocols);
 162         ut_asserteq(num_protocols, ret);
 163         ut_asserteq_mem(priv->protocols, protocols, sizeof(u8) * num_protocols);
 164         free(protocols);
 165
 166         /*
 167          * NOTE: Sandbox SCMI driver handles device-0 only. It supports setting
 168          * access and protocol permissions, but doesn't allow unsetting them nor
 169          * resetting the configurations.
 170          */
 171         /* set device permissions */
 172         ret = scmi_base_set_device_permissions(base, agent_id, 0,
 173                                                SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
 174         ut_assertok(ret); /* SCMI_SUCCESS */
 175         ret = scmi_base_set_device_permissions(base, agent_id, 1,
 176                                                SCMI_BASE_SET_DEVICE_PERMISSIONS_ACCESS);
 177         ut_asserteq(-ENOENT, ret); /* SCMI_NOT_FOUND */
 178         ret = scmi_base_set_device_permissions(base, agent_id, 0, 0);
 179         ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
 180
 181         /* set protocol permissions */
 182         ret = scmi_base_set_protocol_permissions(base, agent_id, 0,
 183                                                  SCMI_PROTOCOL_ID_CLOCK,
 184                                                  SCMI_BASE_SET_PROTOCOL_PERMISSIONS_ACCESS);
 185         ut_assertok(ret); /* SCMI_SUCCESS */
 186         ret = scmi_base_set_protocol_permissions(base, agent_id, 1,
 187                                                  SCMI_PROTOCOL_ID_CLOCK,
 188                                                  SCMI_BASE_SET_PROTOCOL_PERMISSIONS_ACCESS);
 189         ut_asserteq(-ENOENT, ret); /* SCMI_NOT_FOUND */
 190         ret = scmi_base_set_protocol_permissions(base, agent_id, 0,
 191                                                  SCMI_PROTOCOL_ID_CLOCK, 0);
 192         ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
 193
 194         /* reset agent configuration */
 195         ret = scmi_base_reset_agent_configuration(base, agent_id, 0);
 196         ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
 197         ret = scmi_base_reset_agent_configuration(base, agent_id,
 198                                                   SCMI_BASE_RESET_ALL_ACCESS_PERMISSIONS);
 199         ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
 200         ret = scmi_base_reset_agent_configuration(base, agent_id, 0);
 201         ut_asserteq(-EACCES, ret); /* SCMI_DENIED */
 202
 203         return 0;
 204 }
 205 DM_TEST(dm_test_scmi_base, UTF_SCAN_FDT);
 206
 207 static int dm_test_scmi_cmd(struct unit_test_state *uts)
 208 {
 209         struct udevice *agent_dev;
 210         int num_proto = 0;
 211         char cmd_out[30];
 212
 213         if (!CONFIG_IS_ENABLED(CMD_SCMI))
 214                 return -EAGAIN;
 215
 216         /* preparation */
 217         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
 218                                               &agent_dev));
 219         ut_assertnonnull(agent_dev);
 220
 221         /*
 222          * Estimate the number of provided protocols.
 223          * This estimation is correct as far as a corresponding
 224          * protocol support is added to sandbox fake serer.
 225          */
 226         if (CONFIG_IS_ENABLED(POWER_DOMAIN))
 227                 num_proto++;
 228         if (CONFIG_IS_ENABLED(CLK_SCMI))
 229                 num_proto++;
 230         if (CONFIG_IS_ENABLED(RESET_SCMI))
 231                 num_proto++;
 232         if (CONFIG_IS_ENABLED(DM_REGULATOR_SCMI))
 233                 num_proto++;
 234
 235         /* scmi info */
 236         ut_assertok(run_command("scmi info", 0));
 237
 238         ut_assert_nextline("SCMI device: scmi");
 239         snprintf(cmd_out, 30, "  protocol version: 0x%x",
 240                  SCMI_BASE_PROTOCOL_VERSION);
 241         ut_assert_nextline(cmd_out);
 242         ut_assert_nextline("  # of agents: 2");
 243         ut_assert_nextline("      0: platform");
 244         ut_assert_nextline("    > 1: OSPM");
 245         snprintf(cmd_out, 30, "  # of protocols: %d", num_proto);
 246         ut_assert_nextline(cmd_out);
 247         if (CONFIG_IS_ENABLED(SCMI_POWER_DOMAIN))
 248                 ut_assert_nextline("      Power domain management");
 249         if (CONFIG_IS_ENABLED(CLK_SCMI))
 250                 ut_assert_nextline("      Clock management");
 251         if (CONFIG_IS_ENABLED(RESET_SCMI))
 252                 ut_assert_nextline("      Reset domain management");
 253         if (CONFIG_IS_ENABLED(DM_REGULATOR_SCMI))
 254                 ut_assert_nextline("      Voltage domain management");
 255         ut_assert_nextline("  vendor: U-Boot");
 256         ut_assert_nextline("  sub vendor: Sandbox");
 257         ut_assert_nextline("  impl version: 0x1");
 258
 259         ut_assert_console_end();
 260
 261         /* scmi perm_dev */
 262         ut_assertok(run_command("scmi perm_dev 1 0 1", 0));
 263         ut_assert_console_end();
 264
 265         ut_assert(run_command("scmi perm_dev 1 0 0", 0));
 266         ut_assert_nextline("Denying access to device:0 failed (-13)");
 267         ut_assert_console_end();
 268
 269         /* scmi perm_proto */
 270         ut_assertok(run_command("scmi perm_proto 1 0 14 1", 0));
 271         ut_assert_console_end();
 272
 273         ut_assert(run_command("scmi perm_proto 1 0 14 0", 0));
 274         ut_assert_nextline("Denying access to protocol:0x14 on device:0 failed (-13)");
 275         ut_assert_console_end();
 276
 277         /* scmi reset */
 278         ut_assert(run_command("scmi reset 1 1", 0));
 279         ut_assert_nextline("Reset failed (-13)");
 280         ut_assert_console_end();
 281
 282         return 0;
 283 }
 284 DM_TEST(dm_test_scmi_cmd, UTF_SCAN_FDT | UTF_CONSOLE);
 285
 286 static int dm_test_scmi_power_domains(struct unit_test_state *uts)
 287 {
 288         struct sandbox_scmi_agent *agent;
 289         struct sandbox_scmi_devices *scmi_devices;
 290         struct udevice *agent_dev, *pwd, *dev;
 291         u32 version, count, attributes, pstate;
 292         u64 stats_addr;
 293         size_t stats_len;
 294         u8 *name;
 295         int ret;
 296
 297         if (!CONFIG_IS_ENABLED(SCMI_POWER_DOMAIN))
 298                 return -EAGAIN;
 299
 300         /* preparation */
 301         ut_assertok(load_sandbox_scmi_test_devices(uts, &agent, &dev));
 302         ut_assertnonnull(agent);
 303         scmi_devices = sandbox_scmi_devices_ctx(dev);
 304         ut_assertnonnull(scmi_devices);
 305         ut_asserteq(2, scmi_devices->pwdom->id); /* in test.dts */
 306
 307         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
 308                                               &agent_dev));
 309         ut_assertnonnull(agent_dev);
 310         pwd = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_POWER_DOMAIN);
 311         ut_assertnonnull(pwd);
 312
 313         /*
 314          * SCMI Power domain management protocol interfaces
 315          */
 316         /* version */
 317         ret = scmi_generic_protocol_version(pwd, SCMI_PROTOCOL_ID_POWER_DOMAIN,
 318                                             &version);
 319         ut_assertok(ret);
 320         ut_asserteq(agent->pwdom_version, version);
 321
 322         /* protocol attributes */
 323         ret = scmi_pwd_protocol_attrs(pwd, &count, &stats_addr, &stats_len);
 324         ut_assertok(ret);
 325         ut_asserteq(agent->pwdom_count, count);
 326         ut_asserteq(0, stats_len);
 327
 328         /* protocol message attributes */
 329         ret = scmi_pwd_protocol_message_attrs(pwd, SCMI_PWD_STATE_SET,
 330                                               &attributes);
 331         ut_assertok(ret);
 332         ret = scmi_pwd_protocol_message_attrs(pwd, SCMI_PWD_STATE_NOTIFY,
 333                                               &attributes);
 334         ut_asserteq(-ENOENT, ret); /* the protocol not supported */
 335
 336         /* power domain attributes */
 337         ret = scmi_pwd_attrs(pwd, 0, &attributes, &name);
 338         ut_assertok(ret);
 339         ut_asserteq_str("power-domain--0", name);
 340         free(name);
 341
 342         ret = scmi_pwd_attrs(pwd, 10, &attributes, &name);
 343         ut_asserteq(-ENOENT, ret); /* domain-10 doesn't exist */
 344
 345         /* power domain state set/get */
 346         ret = scmi_pwd_state_set(pwd, 0, 0, 0);
 347         ut_assertok(ret);
 348         ret = scmi_pwd_state_get(pwd, 0, &pstate);
 349         ut_assertok(ret);
 350         ut_asserteq(0, pstate); /* ON */
 351
 352         ret = scmi_pwd_state_set(pwd, 0, 0, SCMI_PWD_PSTATE_TYPE_LOST);
 353         ut_assertok(ret);
 354         ret = scmi_pwd_state_get(pwd, 0, &pstate);
 355         ut_assertok(ret);
 356         ut_asserteq(SCMI_PWD_PSTATE_TYPE_LOST, pstate); /* OFF */
 357
 358         ret = scmi_pwd_state_set(pwd, 0, 10, 0);
 359         ut_asserteq(-ENOENT, ret);
 360
 361         /* power domain name get */
 362         ret = scmi_pwd_name_get(pwd, 0, &name);
 363         ut_assertok(ret);
 364         ut_asserteq_str("power-domain--0-extended", name);
 365         free(name);
 366
 367         ret = scmi_pwd_name_get(pwd, 10, &name);
 368         ut_asserteq(-ENOENT, ret); /* domain-10 doesn't exist */
 369
 370         /*
 371          * U-Boot driver model interfaces
 372          */
 373         /* power_domain_on */
 374         ret = power_domain_on(scmi_devices->pwdom);
 375         ut_assertok(ret);
 376         ret = scmi_pwd_state_get(pwd, scmi_devices->pwdom->id, &pstate);
 377         ut_assertok(ret);
 378         ut_asserteq(0, pstate); /* ON */
 379
 380         /* power_domain_off */
 381         ret = power_domain_off(scmi_devices->pwdom);
 382         ut_assertok(ret);
 383         ret = scmi_pwd_state_get(pwd, scmi_devices->pwdom->id, &pstate);
 384         ut_assertok(ret);
 385         ut_asserteq(SCMI_PWD_PSTATE_TYPE_LOST, pstate); /* OFF */
 386
 387         return release_sandbox_scmi_test_devices(uts, dev);
 388 }
 389 DM_TEST(dm_test_scmi_power_domains, UTF_SCAN_FDT);
 390
 391 static int dm_test_scmi_clocks(struct unit_test_state *uts)
 392 {
 393         struct sandbox_scmi_agent *agent;
 394         struct sandbox_scmi_devices *scmi_devices;
 395         struct udevice *agent_dev, *clock_dev, *dev;
 396         int ret_dev;
 397         int ret;
 398
 399         if (!CONFIG_IS_ENABLED(CLK_SCMI))
 400                 return -EAGAIN;
 401
 402         ret = load_sandbox_scmi_test_devices(uts, &agent, &dev);
 403         if (ret)
 404                 return ret;
 405
 406         scmi_devices = sandbox_scmi_devices_ctx(dev);
 407         ut_assertnonnull(scmi_devices);
 408
 409         /* Sandbox SCMI clock protocol has its own channel */
 410         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
 411                                               &agent_dev));
 412         ut_assertnonnull(agent_dev);
 413         clock_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_CLOCK);
 414         ut_assertnonnull(clock_dev);
 415         ut_asserteq(0x14, sandbox_scmi_channel_id(clock_dev));
 416
 417         /* Test SCMI clocks rate manipulation */
 418         ut_asserteq(333, agent->clk[0].rate);
 419         ut_asserteq(200, agent->clk[1].rate);
 420         ut_asserteq(1000, agent->clk[2].rate);
 421
 422         ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
 423         ut_asserteq(333, clk_get_rate(&scmi_devices->clk[1]));
 424
 425         ret_dev = clk_set_rate(&scmi_devices->clk[1], 1088);
 426         ut_assert(!ret_dev || ret_dev == 1088);
 427
 428         ut_asserteq(1088, agent->clk[0].rate);
 429         ut_asserteq(200, agent->clk[1].rate);
 430         ut_asserteq(1000, agent->clk[2].rate);
 431
 432         ut_asserteq(1000, clk_get_rate(&scmi_devices->clk[0]));
 433         ut_asserteq(1088, clk_get_rate(&scmi_devices->clk[1]));
 434
 435         /* restore original rate for further tests */
 436         ret_dev = clk_set_rate(&scmi_devices->clk[1], 333);
 437         ut_assert(!ret_dev || ret_dev == 333);
 438
 439         /* Test SCMI clocks gating manipulation */
 440         ut_assert(!agent->clk[0].enabled);
 441         ut_assert(!agent->clk[1].enabled);
 442         ut_assert(!agent->clk[2].enabled);
 443
 444         ut_asserteq(0, clk_enable(&scmi_devices->clk[1]));
 445
 446         ut_assert(agent->clk[0].enabled);
 447         ut_assert(!agent->clk[1].enabled);
 448         ut_assert(!agent->clk[2].enabled);
 449
 450         ut_assertok(clk_disable(&scmi_devices->clk[1]));
 451
 452         ut_assert(!agent->clk[0].enabled);
 453         ut_assert(!agent->clk[1].enabled);
 454         ut_assert(!agent->clk[2].enabled);
 455
 456         return release_sandbox_scmi_test_devices(uts, dev);
 457 }
 458 DM_TEST(dm_test_scmi_clocks, UTF_SCAN_FDT);
 459
 460 static int dm_test_scmi_resets(struct unit_test_state *uts)
 461 {
 462         struct sandbox_scmi_agent *agent;
 463         struct sandbox_scmi_devices *scmi_devices;
 464         struct udevice *agent_dev, *reset_dev, *dev = NULL;
 465         int ret;
 466
 467         if (!CONFIG_IS_ENABLED(RESET_SCMI))
 468                 return -EAGAIN;
 469
 470         ret = load_sandbox_scmi_test_devices(uts, &agent, &dev);
 471         if (ret)
 472                 return ret;
 473
 474         scmi_devices = sandbox_scmi_devices_ctx(dev);
 475         ut_assertnonnull(scmi_devices);
 476
 477         /* Sandbox SCMI reset protocol doesn't have its own channel */
 478         ut_assertok(uclass_get_device_by_name(UCLASS_SCMI_AGENT, "scmi",
 479                                               &agent_dev));
 480         ut_assertnonnull(agent_dev);
 481         reset_dev = scmi_get_protocol(agent_dev, SCMI_PROTOCOL_ID_RESET_DOMAIN);
 482         ut_assertnonnull(reset_dev);
 483         ut_asserteq(0x0, sandbox_scmi_channel_id(reset_dev));
 484
 485         /* Test SCMI resect controller manipulation */
 486         ut_assert(!agent->reset[0].asserted);
 487
 488         ut_assertok(reset_assert(&scmi_devices->reset[0]));
 489         ut_assert(agent->reset[0].asserted);
 490
 491         ut_assertok(reset_deassert(&scmi_devices->reset[0]));
 492         ut_assert(!agent->reset[0].asserted);
 493
 494         return release_sandbox_scmi_test_devices(uts, dev);
 495 }
 496 DM_TEST(dm_test_scmi_resets, UTF_SCAN_FDT);
 497
 498 static int dm_test_scmi_voltage_domains(struct unit_test_state *uts)
 499 {
 500         struct sandbox_scmi_agent *agent;
 501         struct sandbox_scmi_devices *scmi_devices;
 502         struct dm_regulator_uclass_plat *uc_pdata;
 503         struct udevice *dev;
 504         struct udevice *regul0_dev;
 505
 506         if (!CONFIG_IS_ENABLED(DM_REGULATOR_SCMI))
 507                 return -EAGAIN;
 508
 509         ut_assertok(load_sandbox_scmi_test_devices(uts, &agent, &dev));
 510
 511         scmi_devices = sandbox_scmi_devices_ctx(dev);
 512         ut_assertnonnull(scmi_devices);
 513
 514         /* Set/Get an SCMI voltage domain level */
 515         regul0_dev = scmi_devices->regul[0];
 516         ut_assert(regul0_dev);
 517
 518         uc_pdata = dev_get_uclass_plat(regul0_dev);
 519         ut_assert(uc_pdata);
 520
 521         ut_assertok(regulator_set_value(regul0_dev, uc_pdata->min_uV));
 522         ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->min_uV);
 523
 524         ut_assert(regulator_get_value(regul0_dev) == uc_pdata->min_uV);
 525
 526         ut_assertok(regulator_set_value(regul0_dev, uc_pdata->max_uV));
 527         ut_asserteq(agent->voltd[0].voltage_uv, uc_pdata->max_uV);
 528
 529         ut_assert(regulator_get_value(regul0_dev) == uc_pdata->max_uV);
 530
 531         /* Enable/disable SCMI voltage domains */
 532         ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
 533         ut_assertok(regulator_set_enable(scmi_devices->regul[1], false));
 534         ut_assert(!agent->voltd[0].enabled);
 535         ut_assert(!agent->voltd[1].enabled);
 536
 537         ut_assertok(regulator_set_enable(scmi_devices->regul[0], true));
 538         ut_assert(agent->voltd[0].enabled);
 539         ut_assert(!agent->voltd[1].enabled);
 540
 541         ut_assertok(regulator_set_enable(scmi_devices->regul[1], true));
 542         ut_assert(agent->voltd[0].enabled);
 543         ut_assert(agent->voltd[1].enabled);
 544
 545         ut_assertok(regulator_set_enable(scmi_devices->regul[0], false));
 546         ut_assert(!agent->voltd[0].enabled);
 547         ut_assert(agent->voltd[1].enabled);
 548
 549         return release_sandbox_scmi_test_devices(uts, dev);
 550 }
 551 DM_TEST(dm_test_scmi_voltage_domains, UTF_SCAN_FDT);