[PATCH v1 3/4] dt-binding: watchdog: add bootstatus reset type documentation

Tomer Maimon
2020-03-01T09:41:57Z

Add device tree three bootstatus reset types documentation.

Signed-off-by: Tomer Maimon <tmaimon77@gmail.com>
---
.../bindings/watchdog/nuvoton,npcm-wdt.txt | 30 +++++++++++++++++++
1 file changed, 30 insertions(+)

diff --git a/Documentation/devicetree/bindings/watchdog/nuvoton,npcm-wdt.txt b/Documentation/devicetree/bindings/watchdog/nuvoton,npcm-wdt.txt
index 0a0f86a25eb0..836e0ac29196 100644
--- a/Documentation/devicetree/bindings/watchdog/nuvoton,npcm-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/nuvoton,npcm-wdt.txt
@@ -18,6 +18,33 @@ Required clocking property, have to be one of:
Optional properties:
- timeout-sec : Contains the watchdog timeout in seconds
- nuvoton,restart-priority : Contains the card restart priority.
+- nuvoton,card-reset-type : "porst|corst|wd0|wd1|wd2|sw1|sw2|sw3|sw4"
+ Contains the card reset type for checking and indicating
+ the last card reset status (WDIOF_CARDRESET)
+
+ If 'nuvoton,card-reset-type' is not specified the default is porst
+
+ Reset types:
+ - porst: Power reset
+ - corst: Core reset
+ - wdX : Watchdog reset X (X represante 0-2)
+ - swX : Software reset X (X represante 1-4)
+
+- nuvoton,ext1-reset-type : "porst|corst|wd0|wd1|wd2|sw1|sw2|sw3|sw4"
+ Contains the external 2 reset type for checking and indicating
+ the last external 2 reset status (WDIOF_EXTERN1)
+
+ If 'nuvoton,card-reset-type' is not specified the default is wd0.
+
+ Reset types are the same as in nuvoton,card-reset-type property.
+
+- nuvoton,ext2-reset-type : "porst|corst|wd0|wd1|wd2|sw1|sw2|sw3|sw4"
+ Contains the external 2 reset type for checking and indicating
+ the last external 2 reset status (WDIOF_EXTERN2)
+
+ If 'nuvoton,card-reset-type' is not specified the default is sw1.
+
+ Reset types are the same as in nuvoton,card-reset-type property.

Example:

@@ -27,4 +54,7 @@ timer@f000801c {
reg = <0xf000801c 0x4>;
clocks = <&clk NPCM7XX_CLK_TIMER>;
nuvoton,restart-priority = <155>;
+ nuvoton,card-reset-type = "porst";
+ nuvoton,ext1-reset-type = "wd1";
+ nuvoton,ext2-reset-type = "sw2";
};
--
2.22.0