[v3,2/7] watchdog: sunxi: allow setting timeout in devicetree

Message ID 20180211200847.25000-2-marcus.folkesson@gmail.com
State Not Applicable
Headers show
Series
  • Untitled series #27973
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Commit Message

Marcus Folkesson Feb. 11, 2018, 8:08 p.m.
watchdog_init_timeout() will allways pick timeout_param since it
defaults to a valid timeout.

By following best practice described in
Documentation/watchdog/watchdog-kernel-api.txt, it also
let us to set timout-sec property in devicetree.

Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
---
 Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt | 4 ++++
 drivers/watchdog/sunxi_wdt.c                             | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

Comments

Rob Herring Feb. 19, 2018, 12:06 a.m. | #1
On Sun, Feb 11, 2018 at 09:08:42PM +0100, Marcus Folkesson wrote:
> watchdog_init_timeout() will allways pick timeout_param since it
> defaults to a valid timeout.
> 
> By following best practice described in
> Documentation/watchdog/watchdog-kernel-api.txt, it also
> let us to set timout-sec property in devicetree.
> 
> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> ---
>  Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt | 4 ++++
>  drivers/watchdog/sunxi_wdt.c                             | 2 +-
>  2 files changed, 5 insertions(+), 1 deletion(-)

Reviewed-by: Rob Herring <robh@kernel.org>
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Chen-Yu Tsai Feb. 19, 2018, 3:01 a.m. | #2
On Mon, Feb 19, 2018 at 8:06 AM, Rob Herring <robh@kernel.org> wrote:
> On Sun, Feb 11, 2018 at 09:08:42PM +0100, Marcus Folkesson wrote:
>> watchdog_init_timeout() will allways pick timeout_param since it
>> defaults to a valid timeout.
>>
>> By following best practice described in
>> Documentation/watchdog/watchdog-kernel-api.txt, it also
>> let us to set timout-sec property in devicetree.
>>
>> Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
>> Reviewed-by: Guenter Roeck <linux@roeck-us.net>
>> ---
>>  Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt | 4 ++++
>>  drivers/watchdog/sunxi_wdt.c                             | 2 +-
>>  2 files changed, 5 insertions(+), 1 deletion(-)
>
> Reviewed-by: Rob Herring <robh@kernel.org>

Reviewed-by: Chen-Yu Tsai <wens@csie.org>
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Patch

diff --git a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt b/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
index 62dd5baad70e..49900e72f6b1 100644
--- a/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/sunxi-wdt.txt
@@ -6,9 +6,13 @@  Required properties:
                "allwinner,sun6i-a31-wdt"
 - reg : Specifies base physical address and size of the registers.
 
+Optional properties:
+- timeout-sec : Contains the watchdog timeout in seconds
+
 Example:
 
 wdt: watchdog@1c20c90 {
 	compatible = "allwinner,sun4i-a10-wdt";
 	reg = <0x01c20c90 0x10>;
+	timeout-sec = <10>;
 };
diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
index 9728fa32c357..55f166bec0ca 100644
--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -39,7 +39,7 @@ 
 #define DRV_VERSION		"1.0"
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
-static unsigned int timeout = WDT_MAX_TIMEOUT;
+static unsigned int timeout;
 
 /*
  * This structure stores the register offsets for different variants