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authorLinus Torvalds <torvalds@linux-foundation.org>2014-12-10 08:18:32 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2014-12-10 08:18:32 -0800
commita157508c9790ccd1c8b5c6a828d6ba85bbe95aaa (patch)
tree84fc815aac23bb44747e5bdad0559e7383d6f1e6 /drivers/watchdog
parent86c6a2fddf0b89b494c7616f2c06cf915c4bff01 (diff)
parent89de77a8c557f14d2713a1f43fbc33980e639b98 (diff)
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer core updates from Thomas Gleixner: "The time(r) departement provides: - more infrastructure work on the year 2038 issue - a few fixes in the Armada SoC timers - the usual pile of fixlets and improvements" * 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: clocksource: armada-370-xp: Use the reference clock on A375 SoC watchdog: orion: Use the reference clock on Armada 375 SoC clocksource: armada-370-xp: Add missing clock enable time: Fix sign bug in NTP mult overflow warning time: Remove timekeeping_inject_sleeptime() rtc: Update suspend/resume timing to use 64bit time rtc/lib: Provide y2038 safe rtc_tm_to_time()/rtc_time_to_tm() replacement time: Fixup comments to reflect usage of timespec64 time: Expose get_monotonic_coarse64() for in-kernel uses time: Expose getrawmonotonic64 for in-kernel uses time: Provide y2038 safe mktime() replacement time: Provide y2038 safe timekeeping_inject_sleeptime() replacement time: Provide y2038 safe do_settimeofday() replacement time: Complete NTP adjustment threshold judging conditions time: Avoid possible NTP adjustment mult overflow. time: Rename udelay_test.c to test_udelay.c clocksource: sirf: Remove hard-coded clock rate
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/orion_wdt.c42
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,