1 // SPDX-License-Identifier: GPL-2.0-or-later
19  * of_get_min_tck() - extract min timing values for ddr
21  * @dev: device requesting for min timing values
26  * default min timings provided by JEDEC.
32 	struct lpddr2_min_tck	*min;  in of_get_min_tck()  local
34 	min = devm_kzalloc(dev, sizeof(*min), GFP_KERNEL);  in of_get_min_tck()
35 	if (!min)  in of_get_min_tck()
38 	ret |= of_property_read_u32(np, "tRPab-min-tck", &min->tRPab);  in of_get_min_tck()
39 	ret |= of_property_read_u32(np, "tRCD-min-tck", &min->tRCD);  in of_get_min_tck()
40 	ret |= of_property_read_u32(np, "tWR-min-tck", &min->tWR);  in of_get_min_tck()
41 	ret |= of_property_read_u32(np, "tRASmin-min-tck", &min->tRASmin);  in of_get_min_tck()
42 	ret |= of_property_read_u32(np, "tRRD-min-tck", &min->tRRD);  in of_get_min_tck()
43 	ret |= of_property_read_u32(np, "tWTR-min-tck", &min->tWTR);  in of_get_min_tck()
44 	ret |= of_property_read_u32(np, "tXP-min-tck", &min->tXP);  in of_get_min_tck()
45 	ret |= of_property_read_u32(np, "tRTP-min-tck", &min->tRTP);  in of_get_min_tck()
46 	ret |= of_property_read_u32(np, "tCKE-min-tck", &min->tCKE);  in of_get_min_tck()
47 	ret |= of_property_read_u32(np, "tCKESR-min-tck", &min->tCKESR);  in of_get_min_tck()
48 	ret |= of_property_read_u32(np, "tFAW-min-tck", &min->tFAW);  in of_get_min_tck()
51 		devm_kfree(dev, min);  in of_get_min_tck()
55 	return min;  in of_get_min_tck()
58 	dev_warn(dev, "Using default min-tck values\n");  in of_get_min_tck()
68 	ret = of_property_read_u32(np, "max-freq", &tim->max_freq);  in of_do_get_timings()
69 	ret |= of_property_read_u32(np, "min-freq", &tim->min_freq);  in of_do_get_timings()
70 	ret |= of_property_read_u32(np, "tRPab", &tim->tRPab);  in of_do_get_timings()
71 	ret |= of_property_read_u32(np, "tRCD", &tim->tRCD);  in of_do_get_timings()
72 	ret |= of_property_read_u32(np, "tWR", &tim->tWR);  in of_do_get_timings()
73 	ret |= of_property_read_u32(np, "tRAS-min", &tim->tRAS_min);  in of_do_get_timings()
74 	ret |= of_property_read_u32(np, "tRRD", &tim->tRRD);  in of_do_get_timings()
75 	ret |= of_property_read_u32(np, "tWTR", &tim->tWTR);  in of_do_get_timings()
76 	ret |= of_property_read_u32(np, "tXP", &tim->tXP);  in of_do_get_timings()
77 	ret |= of_property_read_u32(np, "tRTP", &tim->tRTP);  in of_do_get_timings()
78 	ret |= of_property_read_u32(np, "tCKESR", &tim->tCKESR);  in of_do_get_timings()
79 	ret |= of_property_read_u32(np, "tDQSCK-max", &tim->tDQSCK_max);  in of_do_get_timings()
80 	ret |= of_property_read_u32(np, "tFAW", &tim->tFAW);  in of_do_get_timings()
81 	ret |= of_property_read_u32(np, "tZQCS", &tim->tZQCS);  in of_do_get_timings()
82 	ret |= of_property_read_u32(np, "tZQCL", &tim->tZQCL);  in of_do_get_timings()
83 	ret |= of_property_read_u32(np, "tZQinit", &tim->tZQinit);  in of_do_get_timings()
84 	ret |= of_property_read_u32(np, "tRAS-max-ns", &tim->tRAS_max_ns);  in of_do_get_timings()
85 	ret |= of_property_read_u32(np, "tDQSCK-max-derated",  in of_do_get_timings()
86 				    &tim->tDQSCK_max_derated);  in of_do_get_timings()
92  * of_get_ddr_timings() - extracts the ddr timings and updates no of
117 		tim_compat = "jedec,lpddr2-timings";  in of_get_ddr_timings()
157  * of_lpddr3_get_min_tck() - extract min timing values for lpddr3
159  * @dev: device requesting for min timing values
169 	struct lpddr3_min_tck	*min;  in of_lpddr3_get_min_tck()  local
171 	min = devm_kzalloc(dev, sizeof(*min), GFP_KERNEL);  in of_lpddr3_get_min_tck()
172 	if (!min)  in of_lpddr3_get_min_tck()
175 	ret |= of_property_read_u32(np, "tRFC-min-tck", &min->tRFC);  in of_lpddr3_get_min_tck()
176 	ret |= of_property_read_u32(np, "tRRD-min-tck", &min->tRRD);  in of_lpddr3_get_min_tck()
177 	ret |= of_property_read_u32(np, "tRPab-min-tck", &min->tRPab);  in of_lpddr3_get_min_tck()
178 	ret |= of_property_read_u32(np, "tRPpb-min-tck", &min->tRPpb);  in of_lpddr3_get_min_tck()
179 	ret |= of_property_read_u32(np, "tRCD-min-tck", &min->tRCD);  in of_lpddr3_get_min_tck()
180 	ret |= of_property_read_u32(np, "tRC-min-tck", &min->tRC);  in of_lpddr3_get_min_tck()
181 	ret |= of_property_read_u32(np, "tRAS-min-tck", &min->tRAS);  in of_lpddr3_get_min_tck()
182 	ret |= of_property_read_u32(np, "tWTR-min-tck", &min->tWTR);  in of_lpddr3_get_min_tck()
183 	ret |= of_property_read_u32(np, "tWR-min-tck", &min->tWR);  in of_lpddr3_get_min_tck()
184 	ret |= of_property_read_u32(np, "tRTP-min-tck", &min->tRTP);  in of_lpddr3_get_min_tck()
185 	ret |= of_property_read_u32(np, "tW2W-C2C-min-tck", &min->tW2W_C2C);  in of_lpddr3_get_min_tck()
186 	ret |= of_property_read_u32(np, "tR2R-C2C-min-tck", &min->tR2R_C2C);  in of_lpddr3_get_min_tck()
187 	ret |= of_property_read_u32(np, "tWL-min-tck", &min->tWL);  in of_lpddr3_get_min_tck()
188 	ret |= of_property_read_u32(np, "tDQSCK-min-tck", &min->tDQSCK);  in of_lpddr3_get_min_tck()
189 	ret |= of_property_read_u32(np, "tRL-min-tck", &min->tRL);  in of_lpddr3_get_min_tck()
190 	ret |= of_property_read_u32(np, "tFAW-min-tck", &min->tFAW);  in of_lpddr3_get_min_tck()
191 	ret |= of_property_read_u32(np, "tXSR-min-tck", &min->tXSR);  in of_lpddr3_get_min_tck()
192 	ret |= of_property_read_u32(np, "tXP-min-tck", &min->tXP);  in of_lpddr3_get_min_tck()
193 	ret |= of_property_read_u32(np, "tCKE-min-tck", &min->tCKE);  in of_lpddr3_get_min_tck()
194 	ret |= of_property_read_u32(np, "tCKESR-min-tck", &min->tCKESR);  in of_lpddr3_get_min_tck()
195 	ret |= of_property_read_u32(np, "tMRD-min-tck", &min->tMRD);  in of_lpddr3_get_min_tck()
198 		dev_warn(dev, "Errors while parsing min-tck values\n");  in of_lpddr3_get_min_tck()
199 		devm_kfree(dev, min);  in of_lpddr3_get_min_tck()
203 	return min;  in of_lpddr3_get_min_tck()
206 	dev_warn(dev, "Using default min-tck values\n");  in of_lpddr3_get_min_tck()
216 	ret = of_property_read_u32(np, "max-freq", &tim->max_freq);  in of_lpddr3_do_get_timings()
218 		/* Deprecated way of passing max-freq as 'reg' */  in of_lpddr3_do_get_timings()
219 		ret = of_property_read_u32(np, "reg", &tim->max_freq);  in of_lpddr3_do_get_timings()
220 	ret |= of_property_read_u32(np, "min-freq", &tim->min_freq);  in of_lpddr3_do_get_timings()
221 	ret |= of_property_read_u32(np, "tRFC", &tim->tRFC);  in of_lpddr3_do_get_timings()
222 	ret |= of_property_read_u32(np, "tRRD", &tim->tRRD);  in of_lpddr3_do_get_timings()
223 	ret |= of_property_read_u32(np, "tRPab", &tim->tRPab);  in of_lpddr3_do_get_timings()
224 	ret |= of_property_read_u32(np, "tRPpb", &tim->tRPpb);  in of_lpddr3_do_get_timings()
225 	ret |= of_property_read_u32(np, "tRCD", &tim->tRCD);  in of_lpddr3_do_get_timings()
226 	ret |= of_property_read_u32(np, "tRC", &tim->tRC);  in of_lpddr3_do_get_timings()
227 	ret |= of_property_read_u32(np, "tRAS", &tim->tRAS);  in of_lpddr3_do_get_timings()
228 	ret |= of_property_read_u32(np, "tWTR", &tim->tWTR);  in of_lpddr3_do_get_timings()
229 	ret |= of_property_read_u32(np, "tWR", &tim->tWR);  in of_lpddr3_do_get_timings()
230 	ret |= of_property_read_u32(np, "tRTP", &tim->tRTP);  in of_lpddr3_do_get_timings()
231 	ret |= of_property_read_u32(np, "tW2W-C2C", &tim->tW2W_C2C);  in of_lpddr3_do_get_timings()
232 	ret |= of_property_read_u32(np, "tR2R-C2C", &tim->tR2R_C2C);  in of_lpddr3_do_get_timings()
233 	ret |= of_property_read_u32(np, "tFAW", &tim->tFAW);  in of_lpddr3_do_get_timings()
234 	ret |= of_property_read_u32(np, "tXSR", &tim->tXSR);  in of_lpddr3_do_get_timings()
235 	ret |= of_property_read_u32(np, "tXP", &tim->tXP);  in of_lpddr3_do_get_timings()
236 	ret |= of_property_read_u32(np, "tCKE", &tim->tCKE);  in of_lpddr3_do_get_timings()
237 	ret |= of_property_read_u32(np, "tCKESR", &tim->tCKESR);  in of_lpddr3_do_get_timings()
238 	ret |= of_property_read_u32(np, "tMRD", &tim->tMRD);  in of_lpddr3_do_get_timings()
244  * of_lpddr3_get_ddr_timings() - extracts the lpddr3 timings and updates no of
267 		tim_compat = "jedec,lpddr3-timings";  in of_lpddr3_get_ddr_timings()
307  * of_lpddr2_get_info() - extracts information about the lpddr2 chip.
314  * in a device-tree, then the corresponding value is set to -ENOENT.
325 	err = of_property_read_u32_array(np, "revision-id", revision_id, 2);  in of_lpddr2_get_info()
330 		err = of_property_read_u32(np, "revision-id1", &info.revision_id1);  in of_lpddr2_get_info()
332 			info.revision_id1 = -ENOENT;  in of_lpddr2_get_info()
334 		err = of_property_read_u32(np, "revision-id2", &info.revision_id2);  in of_lpddr2_get_info()
336 			info.revision_id2 = -ENOENT;  in of_lpddr2_get_info()
339 	err = of_property_read_u32(np, "io-width", &info.io_width);  in of_lpddr2_get_info()
343 	info.io_width = 32 / info.io_width - 1;  in of_lpddr2_get_info()
349 	info.density = ffs(info.density) - 7;  in of_lpddr2_get_info()
351 	if (of_device_is_compatible(np, "jedec,lpddr2-s4"))  in of_lpddr2_get_info()
353 	else if (of_device_is_compatible(np, "jedec,lpddr2-s2"))  in of_lpddr2_get_info()
355 	else if (of_device_is_compatible(np, "jedec,lpddr2-nvm"))  in of_lpddr2_get_info()
390 		info.manufacturer_id = -ENOENT;  in of_lpddr2_get_info()