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

[Jagan Teki]

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.

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.