[PATCH 0/3] watchdog: dw_wdt: add reset lines

[PATCH 0/3] watchdog: dw_wdt: add reset lines

[Steffen Trumtrar]

Hi!

This series adds support for the reset line that is
(potentially) holding the watchdog in reset.

As the watchdog is useless if this happens, it needs to be deasserted
in the probe function.
Additionally, the reset is the only way of stopping a once started watchdog.
This was previously not supported, so add the stop operation to the watchdog ops.

Tested on the SoCFPGA platform.

Regards,
Steffen

Steffen Trumtrar (3):
  watchdog: bindings: dw_wdt: add reset lines
  watchdog: dw_wdt: get reset lines from dt
  watchdog: dw_wdt: add stop watchdog operation

 .../devicetree/bindings/watchdog/dw_wdt.txt        |  5 +++++
 drivers/watchdog/dw_wdt.c                          | 25 ++++++++++++++++++++++
 2 files changed, 30 insertions(+)

-- 
2.8.1

[PATCH 1/3] watchdog: bindings: dw_wdt: add reset lines

[Steffen Trumtrar]

Document the reset lines holding the watchdog core in reset.

Signed-off-by: Steffen Trumtrar <s.trumtrar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
Cc: Wim Van Sebroeck <wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org>
Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
---
 Documentation/devicetree/bindings/watchdog/dw_wdt.txt | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/dw_wdt.txt b/Documentation/devicetree/bindings/watchdog/dw_wdt.txt
index 08e16f684f2d..3bf386c72241 100644
--- a/Documentation/devicetree/bindings/watchdog/dw_wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/dw_wdt.txt
@@ -10,6 +10,9 @@ Required Properties:
 Optional Properties:
 
 - interrupts	: The interrupt used for the watchdog timeout warning.
+- resets	: phandle pointing to the system reset controller with
+		line index for the watchdog.
+- reset-names	: must be set to "dw-wdt".
 
 Example:
 
@@ -18,4 +21,6 @@ Example:
 		reg = <0xffd02000 0x1000>;
 		interrupts = <0 171 4>;
 		clocks = <&per_base_clk>;
+		resets = <&rst WDT0_RESET>;
+		reset-names = "dw-wdt";
 	};
-- 
2.8.1

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Re: [PATCH 1/3] watchdog: bindings: dw_wdt: add reset lines

[Rob Herring]

On Thu, Sep 22, 2016 at 09:02:30AM +0200, Steffen Trumtrar wrote:
> Document the reset lines holding the watchdog core in reset.
> 
> Signed-off-by: Steffen Trumtrar <s.trumtrar-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
> Cc: Wim Van Sebroeck <wim-IQzOog9fTRqzQB+pC5nmwQ@public.gmane.org>
> Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
> Cc: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
> Cc: linux-watchdog-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> ---
>  Documentation/devicetree/bindings/watchdog/dw_wdt.txt | 5 +++++
>  1 file changed, 5 insertions(+)

Acked-by: Rob Herring <robh-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
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