88PM800/860 device supports output of 32KHz low jitter XO clock out on - CLK32K3 - for 88pm800 - CLK32K2 - for 88pm860
Both devices share same register bit-field to configure this. This patch adds support to enable this clock out, using DT property "marvell,88pm800-32khz-xolj-out-en" Since this configuration is controlled through DT property, it is safe to put it as common code. Signed-off-by: Vaibhav Hiremath <[email protected]> --- drivers/mfd/88pm800.c | 13 +++++++++++++ include/linux/mfd/88pm80x.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/mfd/88pm800.c b/drivers/mfd/88pm800.c index 80a1bc1..8930fd8 100644 --- a/drivers/mfd/88pm800.c +++ b/drivers/mfd/88pm800.c @@ -526,6 +526,19 @@ static int pm800_init_config(struct pm80x_chip *chip, struct device_node *np) int ret; unsigned int val; + /* Enable 32Khz-out-3 low jitter XO_LJ = 1 in pm800 + * Enable 32Khz-out-2 low jitter XO_LJ = 1 in pm860 + * they are the same bit + */ + if (of_property_read_bool(np, "marvell,88pm800-32khz-xolj-out-en")) { + ret = regmap_update_bits(chip->regmap, + PM800_LOW_POWER2, + PM800_XO_LJ_OUT_EN, + PM800_XO_LJ_OUT_EN); + if (ret) + goto error; + } + switch (chip->type) { case CHIP_PM800: case CHIP_PM805: diff --git a/include/linux/mfd/88pm80x.h b/include/linux/mfd/88pm80x.h index 2ef62af..fb916f1 100644 --- a/include/linux/mfd/88pm80x.h +++ b/include/linux/mfd/88pm80x.h @@ -88,6 +88,7 @@ enum { /* Referance and low power registers */ #define PM800_LOW_POWER1 (0x20) #define PM800_LOW_POWER2 (0x21) +#define PM800_XO_LJ_OUT_EN BIT(5) #define PM800_LOW_POWER_CONFIG3 (0x22) #define PM800_LDOBK_FREEZE BIT(7) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
