In some designs the MAX313xx RTC may need calibration to cope with oscillator inaccuracies. Provide read8/write8 ops so that the registers can be accessed. Because the driver covers a range of MAX313xx variants no attempt is made to ensure the register is valid.
Signed-off-by: Chris Packham judge.packham@gmail.com --- drivers/rtc/max313xx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/drivers/rtc/max313xx.c b/drivers/rtc/max313xx.c index 748f3c42c30e..60400235dd0f 100644 --- a/drivers/rtc/max313xx.c +++ b/drivers/rtc/max313xx.c @@ -326,10 +326,22 @@ static int max313xx_reset(struct udevice *dev) return ret; }
+static int max313xx_read8(struct udevice *dev, unsigned int reg) +{ + return dm_i2c_reg_read(dev, reg); +} + +static int max313xx_write8(struct udevice *dev, unsigned int reg, int val) +{ + return dm_i2c_reg_write(dev, reg, val); +} + static const struct rtc_ops max3133x_rtc_ops = { .get = max313xx_read_time, .set = max313xx_set_time, .reset = max313xx_reset, + .read8 = max313xx_read8, + .write8 = max313xx_write8, };
static int max313xx_init(struct udevice *dev)