On Tue, Nov 24, 2015 at 08:20:36AM +0000, Lee Jones wrote:

On Mon, 23 Nov 2015, Damien Riegel wrote:

quoted

Currently syscon has a fixed configuration of 32 bits for register and
values widths. In some cases, it would be desirable to be able to
customize the value width.

For example, certain boards (like the ones manufactured by Technologic
Systems) have a FPGA that is memory-mapped, but its registers are only
16-bit wide.

This patch adds an optional "bus-width" DT binding for syscon that
allows to change the width for the data bus (i.e. val_bits). If this
property is provided, it will also adjust the register stride to
bus-width / 8. If not provided, the default configuration is used.

Signed-off-by: Damien Riegel <redacted>
---
 Documentation/devicetree/bindings/mfd/syscon.txt |  3 +++
 drivers/mfd/syscon.c                             | 13 +++++++++++++
 2 files changed, 16 insertions(+)

Works for me.

For my own reference:
  Acked-by: Lee Jones [off-list ref]

This pachset requires a new version to fix something in the watchdog,
I will add your Ack in the v5.

How would you like this set to be handled?

Not sure what you mean. Actually, I don't know how it works for such
patchset with changes across multiple subsystems. What are the options?


Damien