diff options
Diffstat (limited to 'drivers/watchdog/aspeed_wdt.c')
| -rw-r--r-- | drivers/watchdog/aspeed_wdt.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c index a6c78e123ef5..06b5c8328c9b 100644 --- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -202,11 +202,6 @@ static int aspeed_wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->base)) return PTR_ERR(wdt->base); - /* - * The ast2400 wdt can run at PCLK, or 1MHz. The ast2500 only - * runs at 1MHz. We chose to always run at 1MHz, as there's no - * good reason to have a faster watchdog counter. - */ wdt->wdd.info = &aspeed_wdt_info; wdt->wdd.ops = &aspeed_wdt_ops; wdt->wdd.max_hw_heartbeat_ms = WDT_MAX_TIMEOUT_MS; @@ -222,7 +217,16 @@ static int aspeed_wdt_probe(struct platform_device *pdev) return -EINVAL; config = ofdid->data; - wdt->ctrl = WDT_CTRL_1MHZ_CLK; + /* + * On clock rates: + * - ast2400 wdt can run at PCLK, or 1MHz + * - ast2500 only runs at 1MHz, hard coding bit 4 to 1 + * - ast2600 always runs at 1MHz + * + * Set the ast2400 to run at 1MHz as it simplifies the driver. + */ + if (of_device_is_compatible(np, "aspeed,ast2400-wdt")) + wdt->ctrl = WDT_CTRL_1MHZ_CLK; /* * Control reset on a per-device basis to ensure the |