Hi Mark Brown, On Friday 14 August 2015 11:30 PM, Mark Brown wrote: > On Mon, Jul 27, 2015 at 04:54:09PM +0530, Kishon Vijay Abraham I wrote: > >> vsel_reg and enable_reg of the pbias regulator descriptor should actually >> have the offset from syscon. However after the pbias device tree node > > I'm having a hard time understanding this statement, sorry. What makes > you say that they "shouild actually have the offset from syscon"? What > is the problem that this is supposed to fix? The register to program pbias regulator is 0x4A002E00. The syscon base address is 0x4a002000. So the vsel_reg and enable_reg should have the offset from syscon base address. regulator_enable_regmap gets the base address from 'regmap' and offset from 'enable_reg' in order to program the pbias regulator. But without this patch vsel_reg and enable_reg have the absolute address instead of just the offset. > >> is moved as a child node of syscon, vsel_reg and enable_reg has the >> absolute address because of the address translation that happens while >> creating device from device tree node. >> So avoid using platform_get_resource and use of_get_address in order to >> get only the offset (untranslated address) and populate these in >> vsel_reg and enable_reg. > > This sounds like we're going in the wrong direction, we're moving from a > more generic API to a firmware specific one. Why is this a good fix? platform_get_resource can be used if we need the absolute address but here we need only the offset. Thanks Kishon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
