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103 lines
3.5 KiB
Diff
103 lines
3.5 KiB
Diff
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From 1afb520ffaf9667f18336aa4e983a2dd95462f20 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Mon, 16 Aug 2021 11:11:35 +0100
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Subject: [PATCH] overlays: Add TI BQ32000 RTC support
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See: https://github.com/raspberrypi/linux/issues/4531
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Signed-off-by: Phil Elwell <phil@raspberrypi.com>
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---
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arch/arm/boot/dts/overlays/README | 10 ++++++++++
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.../arm/boot/dts/overlays/i2c-rtc-common.dtsi | 20 ++++++++++++++++++-
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2 files changed, 29 insertions(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/overlays/README
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+++ b/arch/arm/boot/dts/overlays/README
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@@ -1390,6 +1390,8 @@ Params: abx80x Select o
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AB0801, AB0803, AB0804, AB0805,
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AB1801, AB1803, AB1804, AB1805
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+ bq32000 Select the TI BQ32000 device
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+
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ds1307 Select the DS1307 device
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ds1339 Select the DS1339 device
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@@ -1434,6 +1436,9 @@ Params: abx80x Select o
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device must be configured to use the specified
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address.
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+ trickle-diode-disable Do not use the internal trickle charger diode
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+ (BQ32000 only)
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+
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trickle-diode-type Diode type for trickle charge - "standard" or
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"schottky" (ABx80x and RV1805 only)
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@@ -1455,6 +1460,8 @@ Params: abx80x Select o
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AB0801, AB0803, AB0804, AB0805,
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AB1801, AB1803, AB1804, AB1805
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+ bq32000 Select the TI BQ32000 device
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+
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ds1307 Select the DS1307 device
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ds1339 Select the DS1339 device
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@@ -1495,6 +1502,9 @@ Params: abx80x Select o
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device must be configured to use the specified
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address.
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+ trickle-diode-disable Do not use the internal trickle charger diode
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+ (BQ32000 only)
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+
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trickle-diode-type Diode type for trickle charge - "standard" or
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"schottky" (ABx80x and RV1805 only)
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--- a/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
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+++ b/arch/arm/boot/dts/overlays/i2c-rtc-common.dtsi
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@@ -256,6 +256,21 @@
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};
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};
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+ fragment@19 {
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+ target = <&i2cbus>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ bq32000: bq32000@68 {
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+ compatible = "ti,bq32000";
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+ trickle-resistor-ohms = <0>;
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+ reg = <0x68>;
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+ };
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+ };
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+ };
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+
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+
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__overrides__ {
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abx80x = <0>,"+0";
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ds1307 = <0>,"+1";
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@@ -276,6 +291,7 @@
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pcf85063 = <0>,"+15";
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pcf85063a = <0>,"+16";
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s35390a = <0>,"+18";
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+ bq32000 = <0>,"+19";
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addr = <&abx80x>, "reg:0",
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<&ds1307>, "reg:0",
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@@ -288,13 +304,15 @@
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<&m41t62>, "reg:0",
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<&rv1805>, "reg:0",
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<&s35390a>, "reg:0";
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+ trickle-diode-disable = <&bq32000>,"trickle-diode-disable?";
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trickle-diode-type = <&abx80x>,"abracon,tc-diode",
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<&rv1805>,"abracon,tc-diode";
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trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
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<&ds1340>,"trickle-resistor-ohms:0",
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<&abx80x>,"abracon,tc-resistor:0",
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<&rv3028>,"trickle-resistor-ohms:0",
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- <&rv1805>,"abracon,tc-resistor:0";
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+ <&rv1805>,"abracon,tc-resistor:0",
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+ <&bq32000>,"abracon,tc-resistor:0";
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backup-switchover-mode = <&rv3028>,"backup-switchover-mode:0";
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wakeup-source = <&ds1339>,"wakeup-source?",
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<&ds3231>,"wakeup-source?",
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