Prefer aux-voltage-chargeable over trickle-diode-disable and set diode accordingly. This is then passed to the chip's appropriate charge setup function. Signed-off-by: Bastian Krause <bst@xxxxxxxxxxxxxx> --- This is the discussion that lead to this patch: https://lore.kernel.org/linux-rtc/a492b6a0-b41c-a088-3ba1-f1448a074b34@xxxxxxxxxxxxxx/ --- drivers/rtc/rtc-ds1307.c | 23 +++++++++++++++++++++-- 1 file changed, 21 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 270621e1c9cf..9bf1822a989f 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -1308,7 +1308,7 @@ static int ds1307_nvram_write(void *priv, unsigned int offset, void *val, static u8 ds1307_trickle_init(struct ds1307 *ds1307, const struct chip_desc *chip) { - u32 ohms; + u32 ohms, chargeable; bool diode = chip->charge_default; if (!chip->do_trickle_setup) @@ -1318,8 +1318,27 @@ static u8 ds1307_trickle_init(struct ds1307 *ds1307, &ohms) && chip->requires_trickle_resistor) return 0; - if (device_property_read_bool(ds1307->dev, "trickle-diode-disable")) + /* aux-voltage-chargeable takes precedence over the deprecated + * trickle-diode-disable + */ + if (!device_property_read_u32(ds1307->dev, "aux-voltage-chargeable", + &chargeable)) { + switch (chargeable) { + case 0: + diode = false; + break; + case 1: + diode = true; + break; + default: + dev_warn(ds1307->dev, + "unsupported aux-voltage-chargeable value\n"); + break; + } + } else if (device_property_read_bool(ds1307->dev, + "trickle-diode-disable")) { diode = false; + } return chip->do_trickle_setup(ds1307, ohms, diode); } -- 2.28.0
