drivers/bus/intel-ixp4xx-eb.c

93 		.prop = "intel,ixp4xx-eb-t1",
99 		.prop = "intel,ixp4xx-eb-t2",
105 		.prop = "intel,ixp4xx-eb-t3",
111 		.prop = "intel,ixp4xx-eb-t4",
117 		.prop = "intel,ixp4xx-eb-t5",
123 		.prop = "intel,ixp4xx-eb-byte-access-on-halfword",
128 		.prop = "intel,ixp4xx-eb-hpi-hrdy-pol-high",
133 		.prop = "intel,ixp4xx-eb-mux-address-and-data",
138 		.prop = "intel,ixp4xx-eb-ahb-split-transfers",
143 		.prop = "intel,ixp4xx-eb-write-enable",
148 		.prop = "intel,ixp4xx-eb-byte-access",
154 static void ixp4xx_exp_setup_chipselect(struct ixp4xx_eb *eb,
166 	if (eb->is_42x && (cs_index > 7)) {
167 		dev_err(eb->dev,
172 	if (eb->is_43x && (cs_index > 3)) {
173 		dev_err(eb->dev,
191 	regmap_read(eb->rmap, IXP4XX_EXP_TIMING_CS0 +
193 	dev_info(eb->dev, "CS%d at %#08x, size %#08x, config before: %#08x\n",
194 		 cs_index, eb->bus_base + IXP4XX_EXP_STRIDE * cs_index,
203 		dev_err(eb->dev, "illegal size order %d\n", cs_order);
206 	dev_dbg(eb->dev, "CS%d size order: %d\n", cs_index, cs_order);
224 			dev_info(eb->dev, "CS%d %s %s\n", cs_index,
231 			dev_err(eb->dev,
239 		dev_info(eb->dev, "CS%d set %s to %u\n", cs_index, ip->prop, val);
242 	ret = of_property_read_u32(np, "intel,ixp4xx-eb-cycle-type", &val);
245 			dev_err(eb->dev, "illegal cycle type %d\n", val);
248 		dev_info(eb->dev, "CS%d set cycle type %d\n", cs_index, val);
253 	if (eb->is_43x) {
261 			dev_info(eb->dev, "claims to be Intel strata flash\n");
265 	regmap_write(eb->rmap,
268 	dev_info(eb->dev, "CS%d wrote %#08x into CS config\n", cs_index, cs_cfg);
277 		ixp4xx_exp_setup_chipselect(eb, np,
282 static void ixp4xx_exp_setup_child(struct ixp4xx_eb *eb,
295 	dev_dbg(eb->dev, "child %s has %d register sets\n",
318 			dev_err(eb->dev, "illegal CS %d\n", csindex);
330 		dev_dbg(eb->dev, "CS%d size %#08x\n", csindex, cssize);
340 		ixp4xx_exp_setup_chipselect(eb, np, csindex, cssize);
348 	struct ixp4xx_eb *eb;
354 	eb = devm_kzalloc(dev, sizeof(*eb), GFP_KERNEL);
355 	if (!eb)
358 	eb->dev = dev;
359 	eb->is_42x = of_device_is_compatible(np, "intel,ixp42x-expansion-bus-controller");
360 	eb->is_43x = of_device_is_compatible(np, "intel,ixp43x-expansion-bus-controller");
362 	eb->rmap = syscon_node_to_regmap(np);
363 	if (IS_ERR(eb->rmap))
364 		return dev_err_probe(dev, PTR_ERR(eb->rmap), "no regmap\n");
367 	ret = regmap_read(eb->rmap, IXP4XX_EXP_CNFG0, &val);
371 		eb->bus_base = IXP4XX_EXP_BOOT_BASE;
373 		eb->bus_base = IXP4XX_EXP_NORMAL_BASE;
374 	dev_info(dev, "expansion bus at %08x\n", eb->bus_base);
376 	if (eb->is_43x) {
378 		regmap_read(eb->rmap, IXP43X_EXP_UNIT_FUSE_RESET, &val);
397 		ixp4xx_exp_setup_child(eb, child);