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rtc: sun6i: Switch to the external oscillator

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am: 037cd23726

Change-Id: If84426848aa7178fc564d0bdaac39babd56e04ba
This commit is contained in:
Maxime Ripard 2017-03-12 08:24:25 +00:00 • committed by android-build-merger
commit 25c567c768
1 changed files with 6 additions and 0 deletions
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6
drivers/rtc/rtc-sun6i.c
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@ -37,9 +37,11 @@
/* Control register */
#define SUN6I_LOSC_CTRL 0x0000
#define SUN6I_LOSC_CTRL_KEY (0x16aa << 16)
#define SUN6I_LOSC_CTRL_ALM_DHMS_ACC BIT(9)
#define SUN6I_LOSC_CTRL_RTC_HMS_ACC BIT(8)
#define SUN6I_LOSC_CTRL_RTC_YMD_ACC BIT(7)
#define SUN6I_LOSC_CTRL_EXT_OSC BIT(0)
#define SUN6I_LOSC_CTRL_ACC_MASK GENMASK(9, 7)
/* RTC */
@ -417,6 +419,10 @@ static int sun6i_rtc_probe(struct platform_device *pdev)
/* disable alarm wakeup */
writel(0, chip->base + SUN6I_ALARM_CONFIG);
/* switch to the external, more precise, oscillator */
writel(SUN6I_LOSC_CTRL_KEY | SUN6I_LOSC_CTRL_EXT_OSC,
chip->base + SUN6I_LOSC_CTRL);
chip->rtc = rtc_device_register("rtc-sun6i", &pdev->dev,
&sun6i_rtc_ops, THIS_MODULE);
if (IS_ERR(chip->rtc)) {