Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > linux.kernel > #1331339
| From | "Opensource [Steve Twiss]" <stwiss.opensource@diasemi.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | RE: [PATCH V1] mfd: da9062: fix missing volatile registers in the core regmap_range volatile lists |
| Date | 2016-02-10 18:10 +0100 |
| Message-ID | <r0Gr7-59L-3@gated-at.bofh.it> (permalink) |
| References | <qXpmP-5sL-35@gated-at.bofh.it> <r0Ghs-4Nm-3@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 10 February 2016 16:56, Lee Jones wrote: > To: Opensource [Steve Twiss] > Cc: LINUXKERNEL; David Dajun Chen; Support Opensource > Subject: Re: [PATCH V1] mfd: da9062: fix missing volatile registers in the core > regmap_range volatile lists > > On Mon, 01 Feb 2016, Steve Twiss wrote: > > > From: Steve Twiss <stwiss.opensource@diasemi.com> > > > > Add an updated set of registers listed in the core regmap_range volatile > > ranges defined for the DA9062. > > > > These new registers contain bits that cannot be considered under the full > > control of software. Under various conditions the hardware will set and/or > > automatically clear bit(s) contained in these registers. > > > > When using a cached version of regmap, the volatility of these registers must > > be identified otherwise the regmap operations may not ensure the registers > > are explicitly altered. > > > > As well as updating the list of volatile registers, this change will fix a > > corner case discovered in the DA9063 ONKEY which is used by the DA9062 core. > > > > In the ONKEY case, the CONTROL_B register is now listed as volatile in the > > regmap_range because it contains the bit field NONKEY_LOCK. This bit can be > > altered by hardware, in which case regmap must be notified of its ability > > to be manpiulated outside of software control. > > > > Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com> > > Applied, thanks. Thanks. Regards, Steve [...]
Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
Re: [PATCH V1] mfd: da9062: fix missing volatile registers in the core regmap_range volatile lists Lee Jones <lee.jones@linaro.org> - 2016-02-10 18:00 +0100
RE: [PATCH V1] mfd: da9062: fix missing volatile registers in the core regmap_range volatile lists "Opensource [Steve Twiss]" <stwiss.opensource@diasemi.com> - 2016-02-10 18:10 +0100
Re: [PATCH V1] mfd: da9062: fix missing volatile registers in the core regmap_range volatile lists Lee Jones <lee.jones@linaro.org> - 2016-02-11 10:20 +0100
csiph-web