diff options
Diffstat (limited to 'drivers/watchdog/aspeed_wdt.c')
| -rw-r--r-- | drivers/watchdog/aspeed_wdt.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c index fd91007b4e41..f5835cbd5d41 100644 --- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -38,6 +38,7 @@ static const struct aspeed_wdt_config ast2500_config = { static const struct of_device_id aspeed_wdt_of_table[] = { { .compatible = "aspeed,ast2400-wdt", .data = &ast2400_config }, { .compatible = "aspeed,ast2500-wdt", .data = &ast2500_config }, + { .compatible = "aspeed,ast2600-wdt", .data = &ast2500_config }, { }, }; MODULE_DEVICE_TABLE(of, aspeed_wdt_of_table); @@ -203,11 +204,6 @@ 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; @@ -223,7 +219,16 @@ 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 @@ -257,7 +262,8 @@ static int aspeed_wdt_probe(struct platform_device *pdev) set_bit(WDOG_HW_RUNNING, &wdt->wdd.status); } - if (of_device_is_compatible(np, "aspeed,ast2500-wdt")) { + if ((of_device_is_compatible(np, "aspeed,ast2500-wdt")) || + (of_device_is_compatible(np, "aspeed,ast2600-wdt"))) { u32 reg = readl(wdt->base + WDT_RESET_WIDTH); reg &= config->ext_pulse_width_mask; |