[PATCH v7 0/6] Add board support for TS-4800

From: Damien Riegel
Date: Mon Nov 30 2015 - 11:08:50 EST


This patch serie adds support for TS-4800 board. This board,
manufactured by Technologic Systems, is based on an IMX515.

The first stage bootloader, called TS-BOOTROM, enables the watchdog,
so a watchdog driver is required to prevent board from rebooting.

The current device tree is minimal but it allows to get a shell on the
board.

Changes in v7:
- syscon: change bus-width DT property to reg-io-width
- watchdog: add dependency on HAS_IOMEM (spotted by a 0-day build)

Changes in v6:
- vendor prefix: reorder to sort alphabetically (wrong order since v3)
- split commit adding device tree into two patches: one for the doc, one for
the bindings

Changes in v5:
- watchdog: changed iteration stop condition in set_timeout to be less
error prone

Changes in v4:
- syscon: rewrite DT property reading to be clearer
- watchdog: made fixes suggested by Guenter (now uses
watchdog_init_timeout, u32 instead of u16, fixed error checking in
probe, cleaned set_timeout)

Changes in v3:
- Rebased on v4.3
- Changed vendor prefix from "ts" to "technologic"
- Added a DT option to generic syscon driver to allow regmap configuration
- Dropped custom mfd driver, use generic syscon driver instead.

Changes in v2:
- Added a mfd driver to handle syscon registers
- The watchdog driver now uses the regmap (created by the mfd driver)
to access the feed register
- Remove watchdog's dependency on SOC_IMX51

Damien Riegel (6):
of: add vendor prefix for Technologic Systems
mfd: syscon: add a DT property to set value width
watchdog: ts4800: add driver for TS-4800 watchdog
ARM: imx_v6_v7_defconfig: add TS-4800 watchdog
of: documentation: add bindings documentation for TS-4800
ARM: dts: TS-4800: add basic device tree

.../devicetree/bindings/arm/technologic.txt | 6 +
Documentation/devicetree/bindings/mfd/syscon.txt | 4 +
.../devicetree/bindings/vendor-prefixes.txt | 1 +
.../devicetree/bindings/watchdog/ts4800-wdt.txt | 25 +++
arch/arm/boot/dts/Makefile | 3 +-
arch/arm/boot/dts/imx51-ts4800.dts | 190 ++++++++++++++++++
arch/arm/configs/imx_v6_v7_defconfig | 1 +
drivers/mfd/syscon.c | 13 ++
drivers/watchdog/Kconfig | 10 +
drivers/watchdog/Makefile | 1 +
drivers/watchdog/ts4800_wdt.c | 215 +++++++++++++++++++++
11 files changed, 468 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/arm/technologic.txt
create mode 100644 Documentation/devicetree/bindings/watchdog/ts4800-wdt.txt
create mode 100644 arch/arm/boot/dts/imx51-ts4800.dts
create mode 100644 drivers/watchdog/ts4800_wdt.c

--
2.5.0

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