diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0818-overlays-Add-trickle-voltage-mv-parameter-to-RTCs.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-6.1/950-0818-overlays-Add-trickle-voltage-mv-parameter-to-RTCs.patch | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0818-overlays-Add-trickle-voltage-mv-parameter-to-RTCs.patch b/target/linux/bcm27xx/patches-6.1/950-0818-overlays-Add-trickle-voltage-mv-parameter-to-RTCs.patch new file mode 100644 index 0000000000..0539b19cf5 --- /dev/null +++ b/target/linux/bcm27xx/patches-6.1/950-0818-overlays-Add-trickle-voltage-mv-parameter-to-RTCs.patch @@ -0,0 +1,68 @@ +From 31822340129e3c4030500d7f30ce4d19bbf9dd40 Mon Sep 17 00:00:00 2001 +From: Phil Elwell <phil@raspberrypi.com> +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 <phil@raspberrypi.com> +--- + 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?", |