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authorChen-Yu Tsai <wens@csie.org>2014-09-22 00:05:19 +0800
committerWim Van Sebroeck <wim@iguana.be>2014-10-20 21:07:14 +0200
commitc5ec618fbf83045b9d51679d809ddd45f990fe0a (patch)
treeca53144cbd4828c4b154bf95ec802b3f910662de /drivers/watchdog
parentf2147de334703c7c44372f013d7d466d756e6943 (diff)
watchdog: sunxi: Add A31 watchdog support
This patch adds support for the watchdog hardware found in A31 and newer SoCs. This new hardware has registers at different offsets, and the system reset control has been split out of the "mode" register into a new "configuration" register. Differences not supported by this driver include separate interrupt lines for each watchdog, instead of sharing an interrupt line and registers with the timer block. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/sunxi_wdt.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/watchdog/sunxi_wdt.c b/drivers/watchdog/sunxi_wdt.c
index a1f7113fc1d1..b62301e74e5f 100644
--- a/drivers/watchdog/sunxi_wdt.c
+++ b/drivers/watchdog/sunxi_wdt.c
@@ -219,8 +219,18 @@ static const struct sunxi_wdt_reg sun4i_wdt_reg = {
.wdt_reset_val = 0x02,
};
+static const struct sunxi_wdt_reg sun6i_wdt_reg = {
+ .wdt_ctrl = 0x10,
+ .wdt_cfg = 0x14,
+ .wdt_mode = 0x18,
+ .wdt_timeout_shift = 4,
+ .wdt_reset_mask = 0x03,
+ .wdt_reset_val = 0x01,
+};
+
static const struct of_device_id sunxi_wdt_dt_ids[] = {
{ .compatible = "allwinner,sun4i-a10-wdt", .data = &sun4i_wdt_reg },
+ { .compatible = "allwinner,sun6i-a31-wdt", .data = &sun6i_wdt_reg },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, sunxi_wdt_dt_ids);