Thread (22 messages) 22 messages, 7 authors, 2018-03-17
STALE3008d REVIEWED: 4 (4M)

[PATCH v3 6/7] watchdog: meson: allow setting timeout in devicetree

From: Marcus Folkesson <hidden>
Date: 2018-02-11 20:10:19
Also in: linux-amlogic, linux-arm-kernel, linux-mediatek, linux-watchdog, lkml
Subsystem: open firmware and flattened device tree bindings, the rest, watchdog device drivers · Maintainers: Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds, Wim Van Sebroeck, Guenter Roeck

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 <redacted>
Reviewed-by: Guenter Roeck <redacted>
---
 Documentation/devicetree/bindings/watchdog/meson-wdt.txt | 4 ++++
 drivers/watchdog/meson_wdt.c                             | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/watchdog/meson-wdt.txt b/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
index 8a6d84cb36c9..7588cc3971bf 100644
--- a/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
@@ -9,9 +9,13 @@ Required properties:
 	"amlogic,meson8m2-wdt" and "amlogic,meson8b-wdt" on Meson8m2 SoCs
 - reg : Specifies base physical address and size of the registers.
 
+Optional properties:
+- timeout-sec: contains the watchdog timeout in seconds.
+
 Example:
 
 wdt: watchdog@c1109900 {
 	compatible = "amlogic,meson6-wdt";
 	reg = <0xc1109900 0x8>;
+	timeout-sec = <10>;
 };
diff --git a/drivers/watchdog/meson_wdt.c b/drivers/watchdog/meson_wdt.c
index 304274c67735..cd0275a6cdac 100644
--- a/drivers/watchdog/meson_wdt.c
+++ b/drivers/watchdog/meson_wdt.c
@@ -36,7 +36,7 @@
 #define MESON_SEC_TO_TC(s, c)	((s) * (c))
 
 static bool nowayout = WATCHDOG_NOWAYOUT;
-static unsigned int timeout = MESON_WDT_TIMEOUT;
+static unsigned int timeout;
 
 struct meson_wdt_data {
 	unsigned int enable;
-- 
2.15.1

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