From 31822340129e3c4030500d7f30ce4d19bbf9dd40 Mon Sep 17 00:00:00 2001 From: Phil Elwell Date: Mon, 24 Jul 2023 17:34:47 +0100 Subject: [PATCH] overlays: Add trickle-voltage-mv parameter to RTCs The RV3032 RTC requires an additional DT property to enable trickle charging. Add a parameter - trickle-voltage-mv - to the i2c-rtc and i2c-rtc-gpio overlays to set it. See: https://github.com/raspberrypi/linux/issues/5547 Signed-off-by: Phil Elwell --- arch/arm/boot/dts/overlays/README | 12 ++++++++---- arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi | 2 ++ 2 files changed, 10 insertions(+), 4 deletions(-) --- a/arch/arm/boot/dts/overlays/README +++ b/arch/arm/boot/dts/overlays/README @@ -1957,13 +1957,15 @@ Params: abx80x Select o "schottky" (ABx80x and RV1805 only) trickle-resistor-ohms Resistor value for trickle charge (DS1339, - ABx80x, RV1805, RV3028) + ABx80x, BQ32000, RV1805, RV3028, RV3032) + + trickle-voltage-mv Charge pump voltage for trickle charge (RV3032) wakeup-source Specify that the RTC can be used as a wakeup source backup-switchover-mode Backup power supply switch mode. Must be 0 for - off or 1 for Vdd < VBackup (RV3028 only) + off or 1 for Vdd < VBackup (RV3028, RV3032) Name: i2c-rtc-gpio @@ -2027,13 +2029,15 @@ Params: abx80x Select o "schottky" (ABx80x and RV1805 only) trickle-resistor-ohms Resistor value for trickle charge (DS1339, - ABx80x, RV1805, RV3028) + ABx80x, BQ32000, RV1805, RV3028, RV3032) + + trickle-voltage-mv Charge pump voltage for trickle charge (RV3032) wakeup-source Specify that the RTC can be used as a wakeup source backup-switchover-mode Backup power supply switch mode. Must be 0 for - off or 1 for Vdd < VBackup (RV3028 only) + off or 1 for Vdd < VBackup (RV3028, RV3032) i2c_gpio_sda GPIO used for I2C data (default "23") --- a/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi +++ b/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi @@ -339,8 +339,10 @@ <&ds1340>,"trickle-resistor-ohms:0", <&abx80x>,"abracon,tc-resistor:0", <&rv3028>,"trickle-resistor-ohms:0", + <&rv3032>,"trickle-resistor-ohms:0", <&rv1805>,"abracon,tc-resistor:0", <&bq32000>,"abracon,tc-resistor:0"; + trickle-voltage-mv = <&rv3032>,"trickle-voltage-millivolts:0"; backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0"; wakeup-source = <&ds1339>,"wakeup-source?", <&ds3231>,"wakeup-source?",