From 43a64e81b2ac449938ba52a202e3edd23f57ec49 Mon Sep 17 00:00:00 2001
From: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Date: Wed, 12 Jul 2017 00:14:38 +0200
Subject: [PATCH] watchdog: meson-wdt: add support for the watchdog on Meson8
and Meson8m2
The watchdog IP block on Meson8 and Meson8m2 is already supported by the
existing meson-wdt driver. Meson8 uses the same register bits as Meson6,
while the newer Meson8m2 SoC uses the same register bits as Meson8b.
Currently watchdog support on Meson8 SoC already works because
meson8.dtsi simply uses the "amlogic,meson6-wdt" compatible. Adding a
separate compatible for Meson8 makes this more explicit though.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
---
Documentation/devicetree/bindings/watchdog/meson-wdt.txt | 6 +++++-
drivers/watchdog/meson_wdt.c | 2 ++
2 files changed, 7 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/watchdog/meson-wdt.txt b/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
index ae70185d96e64..8a6d84cb36c96 100644
--- a/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
+++ b/Documentation/devicetree/bindings/watchdog/meson-wdt.txt
@@ -2,7 +2,11 @@ Meson SoCs Watchdog timer
Required properties:
-- compatible : should be "amlogic,meson6-wdt" or "amlogic,meson8b-wdt"
+- compatible : depending on the SoC this should be one of:
+ "amlogic,meson6-wdt" on Meson6 SoCs
+ "amlogic,meson8-wdt" and "amlogic,meson6-wdt" on Meson8 SoCs
+ "amlogic,meson8b-wdt" on Meson8b SoCs
+ "amlogic,meson8m2-wdt" and "amlogic,meson8b-wdt" on Meson8m2 SoCs
- reg : Specifies base physical address and size of the registers.
Example:
diff --git a/drivers/watchdog/meson_wdt.c b/drivers/watchdog/meson_wdt.c
index 491b9bf13d849..304274c677354 100644
--- a/drivers/watchdog/meson_wdt.c
+++ b/drivers/watchdog/meson_wdt.c
@@ -155,7 +155,9 @@ static const struct watchdog_ops meson_wdt_ops = {
static const struct of_device_id meson_wdt_dt_ids[] = {
{ .compatible = "amlogic,meson6-wdt", .data = &meson6_wdt_data },
+ { .compatible = "amlogic,meson8-wdt", .data = &meson6_wdt_data },
{ .compatible = "amlogic,meson8b-wdt", .data = &meson8b_wdt_data },
+ { .compatible = "amlogic,meson8m2-wdt", .data = &meson8b_wdt_data },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, meson_wdt_dt_ids);
--
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