Lines Matching defs:emc
49 * /sys/kernel/debug/emc
68 static bool tegra186_emc_validate_rate(struct tegra186_emc *emc,
73 for (i = 0; i < emc->num_dvfs; i++)
74 if (rate == emc->dvfs[i].rate)
83 struct tegra186_emc *emc = s->private;
87 for (i = 0; i < emc->num_dvfs; i++) {
88 seq_printf(s, "%s%lu", prefix, emc->dvfs[i].rate);
100 struct tegra186_emc *emc = data;
102 *rate = emc->debugfs.min_rate;
109 struct tegra186_emc *emc = data;
112 if (!tegra186_emc_validate_rate(emc, rate))
115 err = clk_set_min_rate(emc->clk, rate);
119 emc->debugfs.min_rate = rate;
130 struct tegra186_emc *emc = data;
132 *rate = emc->debugfs.max_rate;
139 struct tegra186_emc *emc = data;
142 if (!tegra186_emc_validate_rate(emc, rate))
145 err = clk_set_max_rate(emc->clk, rate);
149 emc->debugfs.max_rate = rate;
158 static int tegra186_emc_get_emc_dvfs_latency(struct tegra186_emc *emc)
172 err = tegra_bpmp_transfer(emc->bpmp, &msg);
174 dev_err(emc->dev, "failed to EMC DVFS pairs: %d\n", err);
178 dev_err(emc->dev, "EMC DVFS MRQ failed: %d (BPMP error code)\n", msg.rx.ret);
182 emc->debugfs.min_rate = ULONG_MAX;
183 emc->debugfs.max_rate = 0;
185 emc->num_dvfs = response.num_pairs;
187 emc->dvfs = devm_kmalloc_array(emc->dev, emc->num_dvfs, sizeof(*emc->dvfs), GFP_KERNEL);
188 if (!emc->dvfs)
191 dev_dbg(emc->dev, "%u DVFS pairs:\n", emc->num_dvfs);
193 for (i = 0; i < emc->num_dvfs; i++) {
194 emc->dvfs[i].rate = response.pairs[i].freq * 1000;
195 emc->dvfs[i].latency = response.pairs[i].latency;
197 if (emc->dvfs[i].rate < emc->debugfs.min_rate)
198 emc->debugfs.min_rate = emc->dvfs[i].rate;
200 if (emc->dvfs[i].rate > emc->debugfs.max_rate)
201 emc->debugfs.max_rate = emc->dvfs[i].rate;
203 dev_dbg(emc->dev, " %2u: %lu Hz -> %lu us\n", i,
204 emc->dvfs[i].rate, emc->dvfs[i].latency);
207 err = clk_set_rate_range(emc->clk, emc->debugfs.min_rate, emc->debugfs.max_rate);
209 dev_err(emc->dev, "failed to set rate range [%lu-%lu] for %pC\n",
210 emc->debugfs.min_rate, emc->debugfs.max_rate, emc->clk);
214 emc->debugfs.root = debugfs_create_dir("emc", NULL);
215 debugfs_create_file("available_rates", 0444, emc->debugfs.root, emc,
217 debugfs_create_file("min_rate", 0644, emc->debugfs.root, emc,
219 debugfs_create_file("max_rate", 0644, emc->debugfs.root, emc,
263 static int tegra_emc_interconnect_init(struct tegra186_emc *emc)
265 struct tegra_mc *mc = dev_get_drvdata(emc->dev->parent);
270 emc->provider.dev = emc->dev;
271 emc->provider.set = tegra_emc_icc_set_bw;
272 emc->provider.data = &emc->provider;
273 emc->provider.aggregate = soc->icc_ops->aggregate;
274 emc->provider.xlate = tegra_emc_of_icc_xlate;
275 emc->provider.get_bw = tegra_emc_icc_get_init_bw;
277 icc_provider_init(&emc->provider);
287 icc_node_add(node, &emc->provider);
302 icc_node_add(node, &emc->provider);
304 err = icc_provider_register(&emc->provider);
311 icc_nodes_remove(&emc->provider);
313 dev_err(emc->dev, "failed to initialize ICC: %d\n", err);
321 struct tegra186_emc *emc;
324 emc = devm_kzalloc(&pdev->dev, sizeof(*emc), GFP_KERNEL);
325 if (!emc)
328 emc->bpmp = tegra_bpmp_get(&pdev->dev);
329 if (IS_ERR(emc->bpmp))
330 return dev_err_probe(&pdev->dev, PTR_ERR(emc->bpmp), "failed to get BPMP\n");
332 emc->clk = devm_clk_get(&pdev->dev, "emc");
333 if (IS_ERR(emc->clk)) {
334 err = PTR_ERR(emc->clk);
339 platform_set_drvdata(pdev, emc);
340 emc->dev = &pdev->dev;
342 if (tegra_bpmp_mrq_is_supported(emc->bpmp, MRQ_EMC_DVFS_LATENCY)) {
343 err = tegra186_emc_get_emc_dvfs_latency(emc);
349 if (tegra_bpmp_mrq_is_supported(emc->bpmp, MRQ_BWMGR_INT)) {
357 mc->bpmp = emc->bpmp;
367 err = tegra_emc_interconnect_init(emc);
377 tegra_bpmp_put(emc->bpmp);
384 struct tegra186_emc *emc = platform_get_drvdata(pdev);
386 debugfs_remove_recursive(emc->debugfs.root);
389 tegra_bpmp_put(emc->bpmp);
396 { .compatible = "nvidia,tegra186-emc" },
399 { .compatible = "nvidia,tegra194-emc" },
402 { .compatible = "nvidia,tegra234-emc" },
410 .name = "tegra186-emc",