On 10/01/2014 11:47 AM, Marc Kleine-Budde wrote: > On 10/01/2014 10:45 AM, Roger Quadros wrote: >> On 09/30/2014 07:04 PM, Marc Kleine-Budde wrote: >>> On 09/30/2014 05:25 PM, Wolfram Sang wrote: >>>> >>>>> Yes, but syscon_regmap_lookup_by_phandle() doesn't need any support for >>>>> additional parameters. Have a look at: >>>>> >>>>> drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c >>>>> >>>>> First get the regmap, then the 1st argument is the offset in the regmap, >>>>> the 2nd and 3rd could be the bits. >>>> >>>> So, for one driver the extra arguments are: <reg> <start_bit> <stop_bit> >>>> For another driver (the stmmac example): <reg_offset> <reg_shift> >>> >>> The DCAN's "reg" is a "reg_offset" as in the stmmc. >>> >>> Roger, can we derive both start and done bit from a common reg_shift? >> >> I'm sorry I didn't understand what you meant. >> >> <&syscon_phandl> <reg offset> <start bit> <stop bit> should work well for us. >> Even though reg offset is the same for both the DCAN instances. > > What's start bit and stop bit for instance 0 and 1 on that SoC that has > two instances?? >
we have 3 SoCs at the moment, all have 2 DCAN instances. AM33xx & AM43xx instance start stop 1 0 8 2 1 9 DRA7xx instance start stop 1 3 1 2 5 2 cheers, -roger -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
