Messages in this thread | | | Date | Tue, 16 Dec 2014 11:46:52 -0700 | From | Stephen Warren <> | Subject | Re: Possible regression with commit 52221610d |
| |
On 12/14/2014 09:48 PM, Tim Kryger wrote: > On Sat, Dec 13, 2014 at 11:22 PM, Bjorn Andersson <bjorn@kryo.se> wrote: ... >> Or simply; what is vmmc (in the code) supposed to represent? > > Hi Bjorn, > > VMMC is the supply that delivers power out to the SD card itself (aka VDD). > > It is not the internal power rail/power domain of the host controller > within the SoC.
I've seen this question come up quite a few times.
Should Documentation/devicetree/bindings/mmc/mmc.txt document the vmmc/vqmmc regulators? I assume they're considered shared across all MMC/SDHCI controller bindings?
Since that only covers DT, it might be nice to document vmmc-vs-vqmmc somewhere else too, such as right by the devm_regulator_get_optional() calls in mmc_regulator_get_supply() in drivers/mmc/core/core.c.
| |