From mboxrd@z Thu Jan 1 00:00:00 1970 From: damien.riegel@savoirfairelinux.com (Damien Riegel) Date: Tue, 24 Nov 2015 11:24:39 -0500 Subject: [PATCH v4 2/5] mfd: syscon: add a DT property to set value width In-Reply-To: <20151124082036.GE807@x1> References: <1448291861-28543-1-git-send-email-damien.riegel@savoirfairelinux.com> <1448291861-28543-3-git-send-email-damien.riegel@savoirfairelinux.com> <20151124082036.GE807@x1> Message-ID: <20151124162439.GC4616@localhost> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Nov 24, 2015 at 08:20:36AM +0000, Lee Jones wrote: > On Mon, 23 Nov 2015, Damien Riegel wrote: > > > 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 > > --- > > 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 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