2019-09-19 14:43:19 +00:00
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From 2308f60bb68de69306c542de3983be0007cad37b Mon Sep 17 00:00:00 2001
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2019-07-31 16:23:26 +00:00
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Mon, 15 Jul 2019 10:39:05 +0100
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2019-12-23 12:42:55 +00:00
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Subject: [PATCH] overlays: Add PCF2129 RTC
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2019-07-31 16:23:26 +00:00
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Add support for the PCF2129 RTC to i2c-rtc and i2c-rtc-gpio overlays.
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Also add rv3028 to i2c-rtc-gpio (it was missed previously), and don't
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attempt to set an alternate address for the PCF2127.
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Signed-off-by: Phil Elwell <phil@raspberrypi.org>
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---
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arch/arm/boot/dts/overlays/README | 11 ++++-
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.../dts/overlays/i2c-rtc-gpio-overlay.dts | 41 +++++++++++++++++--
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.../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 19 ++++++++-
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3 files changed, 64 insertions(+), 7 deletions(-)
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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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@@ -1022,6 +1022,8 @@ Params: abx80x Select o
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pcf2127 Select the PCF2127 device
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+ pcf2129 Select the PCF2129 device
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+
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pcf8523 Select the PCF8523 device
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pcf8563 Select the PCF8563 device
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@@ -1067,10 +1069,14 @@ Params: abx80x Select o
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pcf2127 Select the PCF2127 device
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+ pcf2129 Select the PCF2129 device
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+
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pcf8523 Select the PCF8523 device
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pcf8563 Select the PCF8563 device
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+ rv3028 Select the Micro Crystal RV3028 device
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+
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addr Sets the address for the RTC. Note that the
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device must be configured to use the specified
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address.
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@@ -1079,11 +1085,14 @@ Params: abx80x Select o
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"schottky" (ABx80x only)
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trickle-resistor-ohms Resistor value for trickle charge (DS1339,
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- ABx80x)
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+ ABx80x, RV3028)
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wakeup-source Specify that the RTC can be used as a wakeup
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source
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+ backup-switchover-mode Backup power supply switch mode. Must be 0 for
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+ off or 1 for Vdd < VBackup (RV3028 only)
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+
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i2c_gpio_sda GPIO used for I2C data (default "23")
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i2c_gpio_scl GPIO used for I2C clock (default "24")
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--- a/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/i2c-rtc-gpio-overlay.dts
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@@ -121,7 +121,7 @@
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#size-cells = <0>;
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status = "okay";
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- pcf2127: pcf2127@51 {
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+ pcf2127@51 {
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compatible = "nxp,pcf2127";
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reg = <0x51>;
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status = "okay";
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@@ -174,6 +174,36 @@
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};
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};
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+ fragment@11 {
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+ target = <&i2c_gpio>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ rv3028: rv3028@52 {
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+ compatible = "microcrystal,rv3028";
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+ reg = <0x52>;
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+ status = "okay";
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+ };
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+ };
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+ };
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+
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+ fragment@12 {
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+ target = <&i2c_gpio>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ pcf2129@51 {
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+ compatible = "nxp,pcf2129";
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+ reg = <0x51>;
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+ status = "okay";
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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>,"+1";
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ds1307 = <0>,"+2";
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@@ -185,6 +215,8 @@
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pcf8523 = <0>,"+8";
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pcf8563 = <0>,"+9";
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m41t62 = <0>,"+10";
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+ rv3028 = <0>,"+11";
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+ pcf2129 = <0>,"+12";
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addr = <&abx80x>, "reg:0",
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<&ds1307>, "reg:0",
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@@ -192,18 +224,19 @@
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<&ds3231>, "reg:0",
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<&mcp7940x>, "reg:0",
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<&mcp7941x>, "reg:0",
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- <&pcf2127>, "reg:0",
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<&pcf8523>, "reg:0",
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<&pcf8563>, "reg:0",
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<&m41t62>, "reg:0";
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trickle-diode-type = <&abx80x>,"abracon,tc-diode";
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trickle-resistor-ohms = <&ds1339>,"trickle-resistor-ohms:0",
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- <&abx80x>,"abracon,tc-resistor";
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+ <&abx80x>,"abracon,tc-resistor",
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+ <&rv3028>,"trickle-resistor-ohms: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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<&mcp7940x>,"wakeup-source?",
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- <&mcp7941x>,"wakeup-source?";
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+ <&mcp7941x>,"wakeup-source?";
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i2c_gpio_sda = <&i2c_gpio>,"gpios:4";
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i2c_gpio_scl = <&i2c_gpio>,"gpios:16";
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i2c_gpio_delay_us = <&i2c_gpio>,"i2c-gpio,delay-us:0";
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--- a/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
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+++ b/arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts
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@@ -105,7 +105,7 @@
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#size-cells = <0>;
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status = "okay";
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- pcf2127: pcf2127@51 {
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+ pcf2127@51 {
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compatible = "nxp,pcf2127";
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reg = <0x51>;
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status = "okay";
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@@ -173,6 +173,21 @@
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};
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};
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+ fragment@11 {
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+ target = <&i2c_arm>;
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+ __dormant__ {
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+ status = "okay";
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+
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+ pcf2129@51 {
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+ compatible = "nxp,pcf2129";
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+ reg = <0x51>;
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+ status = "okay";
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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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@@ -185,6 +200,7 @@
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pcf8563 = <0>,"+8";
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m41t62 = <0>,"+9";
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rv3028 = <0>,"+10";
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+ pcf2129 = <0>,"+11";
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addr = <&abx80x>, "reg:0",
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<&ds1307>, "reg:0",
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@@ -192,7 +208,6 @@
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<&ds3231>, "reg:0",
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<&mcp7940x>, "reg:0",
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<&mcp7941x>, "reg:0",
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- <&pcf2127>, "reg:0",
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<&pcf8523>, "reg:0",
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<&pcf8563>, "reg:0",
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<&m41t62>, "reg:0";
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