diff options
| author | David Schalig <dschalig@nvidia.com> | 2011-03-10 21:49:33 +0900 |
|---|---|---|
| committer | Varun Colbert <vcolbert@nvidia.com> | 2011-03-17 21:20:32 -0800 |
| commit | 3da45a03a1af70e308592727ac134ce9d30d6b0f (patch) | |
| tree | bb71163f9bfa1d8daa42b0f16e6fa7ae2eb3758c /drivers | |
| parent | f41f88597f60d169d51478fd89c0cf53e5868010 (diff) | |
[TPS658x RTC] Correct reg RTC_CTRL usage
Correct PRE_BYPASS (clock scaler 32kHz/1kHz select) bitfield.
Add platform data to tune RTC XTAL capacitance in board file.
Bug 798832, Tested on Ventana/wake via Alarm Clock
Change-Id: I82d67610a815866707fc1db934d7d4d7cf93d883
Reviewed-on: http://git-master/r/22402
Reviewed-by: Varun Colbert <vcolbert@nvidia.com>
Tested-by: Varun Colbert <vcolbert@nvidia.com>
Reviewed-by: David Schalig <dschalig@nvidia.com>
Reviewed-by: Jonathan Mayo <jmayo@nvidia.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/rtc/rtc-tps6586x.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/drivers/rtc/rtc-tps6586x.c b/drivers/rtc/rtc-tps6586x.c index 745134b5caef..b70614fb7d5e 100644 --- a/drivers/rtc/rtc-tps6586x.c +++ b/drivers/rtc/rtc-tps6586x.c @@ -30,8 +30,13 @@ #include <linux/slab.h> #define RTC_CTRL 0xc0 +#define POR_RESET_N BIT(7) +#define OSC_SRC_SEL BIT(6) #define RTC_ENABLE BIT(5) /* enables alarm */ -#define RTC_HIRES BIT(4) /* 1Khz or 32Khz updates */ +#define RTC_BUF_ENABLE BIT(4) /* 32 KHz buffer enable */ +#define PRE_BYPASS BIT(3) /* 0=1KHz or 1=32KHz updates */ +#define CL_SEL_MASK (BIT(2)|BIT(1)) +#define CL_SEL_POS 1 #define RTC_ALARM1_HI 0xc1 #define RTC_COUNT4 0xc6 @@ -284,9 +289,10 @@ static int __devinit tps6586x_rtc_probe(struct platform_device *pdev) goto fail; } - /* disable high-res mode, enable tick counting */ + /* 1 kHz tick mode, enable tick counting */ err = tps6586x_update(tps_dev, RTC_CTRL, - (RTC_ENABLE | RTC_HIRES), RTC_ENABLE); + RTC_ENABLE | ((pdata->cl_sel<<CL_SEL_POS)&CL_SEL_MASK), + RTC_ENABLE | OSC_SRC_SEL | PRE_BYPASS | CL_SEL_MASK); if (err < 0) { dev_err(&pdev->dev, "unable to start counter\n"); goto fail; |