From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 2/5] mfd: syscon: add a DT property to set value width
Date: Mon, 23 Nov 2015 16:19:30 +0100 [thread overview]
Message-ID: <4954077.yFyHuebvEs@wuerfel> (raw)
In-Reply-To: <1448291861-28543-3-git-send-email-damien.riegel@savoirfairelinux.com>
On Monday 23 November 2015 10:17:38 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 <damien.riegel@savoirfairelinux.com>
>
Acked-by: Arnd Bergmann <arnd@arndb.de>
next prev parent reply other threads:[~2015-11-23 15:19 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-23 15:17 [PATCH v4 0/5] Add board support for TS-4800 Damien Riegel
2015-11-23 15:17 ` [PATCH v4 1/5] of: add vendor prefix for Technologic Systems Damien Riegel
2015-11-23 15:17 ` [PATCH v4 2/5] mfd: syscon: add a DT property to set value width Damien Riegel
2015-11-23 15:19 ` Arnd Bergmann [this message]
2015-11-24 8:20 ` Lee Jones
2015-11-24 16:24 ` Damien Riegel
2015-11-24 17:22 ` Lee Jones
2015-11-24 17:23 ` Lee Jones
2015-11-23 15:17 ` [PATCH v4 3/5] watchdog: ts4800: add driver for TS-4800 watchdog Damien Riegel
2015-11-24 2:32 ` Guenter Roeck
2015-11-24 2:55 ` Damien Riegel
2015-11-23 15:17 ` [PATCH v4 4/5] ARM: imx_v6_v7_defconfig: add " Damien Riegel
2015-11-23 15:17 ` [PATCH v4 5/5] ARM: dts: TS-4800: add basic device tree Damien Riegel
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