Hi Srinivas, > Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx> hat am 24. Juni 2015 um > 15:03 geschrieben: > > > > > On 24/06/15 13:30, Stefan Wahren wrote: > >> >If the question is just about hexdump, then hexdump itself can read > >> >file from given offset and size. > > yes, this is my question at first. Let me show the difference between > > the current implementation and my expectations as a user. > > > > $ hexdump /sys/class/nvmem/mxs-ocotp/nvmem > > > > Current implementation: dump the complete register range defined in DT > > > Its dumping the range which is specified in the provider regmap. If the > requirement is to dump only particular range, this has to be made > explicit while creating regmap, which is to specify the base address to > start from "First data register" and max_register to be "Last data > register "- "First data register" i know about max_register, but i can't find the base address in regmap_config. Do you mean struct regmap_access_table *rd_table ? > > > User expectation: dump only the data from OCOTP block > > > > Let me explain it for i.MX28 OCOTP > > > > 0x8002c000 // Start of OCOTP register block (defined in DT) > > > > 0x8002c020 // First data register > > > > 0x8002c290 // Last data register > > > > 0x8002dfff // End of OCOTP register block (defined in DT) > > > > My knowledge about regmap is limited, but how can i achieve that hexdump > > give me only the data registers? From my understanding this should be > > handled in regmap and not in the read function. > > Setup the base and regmap_config correctly in the provider driver before > calling regmap_init_mmio(). > > Let me know if you need more details. Yes, please. Stefan > > --srini > > > > > Are my expectations about the raw access wrong? > > > > > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
