[U-Boot] [PATCH v3 11/11] spi: cadence_qspi: Support specifying the sample edge used

[Phil Edworthy]

Hi Jagan,

On 02 December 2016 14:23, Jagan Teki wrote:
> On Tue, Nov 29, 2016 at 6:28 PM, Phil Edworthy
> <phil.edworthy at renesas.com> wrote:
> > Introduce a new DT property to specify whether the QSPI Controller
> > samples the data on a rising edge. The default is falling edge.
> > Some versions of the QSPI Controller do not implement this bit, in
> > which case the property should be omitted.
> >
> > Signed-off-by: Phil Edworthy <phil.edworthy at renesas.com>
> > ---
> >  v3:
> >   - Patch split so this one only has code related to the subject.
> >   - Commit message updated.
> >  v2:
> >   - Change name of DT prop and provide details of what it does.
> >     Whilst at it, move the code to read the "sram-size" property
> >     into the other code that reads properties from the node, rather
> >     than the SF subnode.
> >
> >     Also change the code to use a bool for the bypass arg.
> > ---
> >  doc/device-tree-bindings/spi/spi-cadence.txt |  2 ++
> >  drivers/spi/cadence_qspi.c                   | 10 +++++++---
> >  drivers/spi/cadence_qspi.h                   |  3 ++-
> >  drivers/spi/cadence_qspi_apb.c               |  8 +++++++-
> >  4 files changed, 18 insertions(+), 5 deletions(-)
> >
> > diff --git a/doc/device-tree-bindings/spi/spi-cadence.txt b/doc/device-tree-
> bindings/spi/spi-cadence.txt
> > index c1e2233..94c800b 100644
> > --- a/doc/device-tree-bindings/spi/spi-cadence.txt
> > +++ b/doc/device-tree-bindings/spi/spi-cadence.txt
> > @@ -26,3 +26,5 @@ connected flash properties
> >                           select (n_ss_out).
> >  - tslch-ns             : Delay in master reference clocks between setting
> >                           n_ss_out low and first bit transfer
> > +- sample-edge-rising   : Data outputs from flash memory will be sampled on
> the
> > +                         rising edge. Default is falling edge.
> 
> Code look reasonable, but how Linux handling this with the same dt
> property, any idea? I couldn't find it either.
The Linux driver does not yet have this property. Is there a policy to add new
props to Linux first?

Thanks
Phil