diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2014-11-27 11:47:10 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2014-11-27 11:47:38 +0100 |
| commit | 89de77a8c557f14d2713a1f43fbc33980e639b98 (patch) | |
| tree | 3d7f32120b6b155e3d1374b277a6333cdb9c31cc /drivers/watchdog | |
| parent | time: Fix sign bug in NTP mult overflow warning (diff) | |
| parent | clocksource: armada-370-xp: Use the reference clock on A375 SoC (diff) | |
| download | linux-dev-89de77a8c557f14d2713a1f43fbc33980e639b98.tar.xz linux-dev-89de77a8c557f14d2713a1f43fbc33980e639b98.zip | |
Merge branch 'clockevents/3.19' of http://git.linaro.org/people/daniel.lezcano/linux into timers/core
Daniel Lezcano muttered:
* Marvell timer updates from Ezequiel Garcia
- Add missing clock enable calls for armada
- Change source clock for clocksource and watchdog
* SIRF timer updates from Yanchang Li
- Make clock rate configurable
Diffstat (limited to 'drivers/watchdog')
| -rw-r--r-- | drivers/watchdog/orion_wdt.c | 42 |
1 files changed, 41 insertions, 1 deletions
diff --git a/drivers/watchdog/orion_wdt.c b/drivers/watchdog/orion_wdt.c index 00d0741228fc..8cb1ff3bcd90 100644 --- a/drivers/watchdog/orion_wdt.c +++ b/drivers/watchdog/orion_wdt.c @@ -114,6 +114,46 @@ static int armada370_wdt_clock_init(struct platform_device *pdev, return 0; } +static int armada375_wdt_clock_init(struct platform_device *pdev, + struct orion_watchdog *dev) +{ + int ret; + + dev->clk = of_clk_get_by_name(pdev->dev.of_node, "fixed"); + if (!IS_ERR(dev->clk)) { + ret = clk_prepare_enable(dev->clk); + if (ret) { + clk_put(dev->clk); + return ret; + } + + atomic_io_modify(dev->reg + TIMER_CTRL, + WDT_AXP_FIXED_ENABLE_BIT, + WDT_AXP_FIXED_ENABLE_BIT); + dev->clk_rate = clk_get_rate(dev->clk); + + return 0; + } + + /* Mandatory fallback for proper devicetree backward compatibility */ + dev->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(dev->clk)) + return PTR_ERR(dev->clk); + + ret = clk_prepare_enable(dev->clk); + if (ret) { + clk_put(dev->clk); + return ret; + } + + atomic_io_modify(dev->reg + TIMER_CTRL, + WDT_A370_RATIO_MASK(WDT_A370_RATIO_SHIFT), + WDT_A370_RATIO_MASK(WDT_A370_RATIO_SHIFT)); + dev->clk_rate = clk_get_rate(dev->clk) / WDT_A370_RATIO; + + return 0; +} + static int armadaxp_wdt_clock_init(struct platform_device *pdev, struct orion_watchdog *dev) { @@ -394,7 +434,7 @@ static const struct orion_watchdog_data armada375_data = { .rstout_mask_bit = BIT(10), .wdt_enable_bit = BIT(8), .wdt_counter_offset = 0x34, - .clock_init = armada370_wdt_clock_init, + .clock_init = armada375_wdt_clock_init, .enabled = armada375_enabled, .start = armada375_start, .stop = armada375_stop, |