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76 lines
2.4 KiB
Diff
76 lines
2.4 KiB
Diff
From 67dd8e4c8ccf5d331960c7e936e5b03a9f92496d Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.org>
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Date: Thu, 28 Mar 2019 13:26:59 +0000
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Subject: [PATCH] overlays: Add rv3028 to i2c-rtc
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See: https://github.com/raspberrypi/linux/issues/2912
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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 | 4 +++-
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.../arm/boot/dts/overlays/i2c-rtc-overlay.dts | 19 ++++++++++++++++++-
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2 files changed, 21 insertions(+), 2 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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@@ -939,6 +939,8 @@ Params: abx80x Select o
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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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@@ -947,7 +949,7 @@ 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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--- 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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@@ -158,6 +158,21 @@
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};
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};
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+ fragment@10 {
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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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+ 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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__overrides__ {
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abx80x = <0>,"+0";
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ds1307 = <0>,"+1";
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@@ -169,6 +184,7 @@
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pcf8523 = <0>,"+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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addr = <&abx80x>, "reg:0",
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<&ds1307>, "reg:0",
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@@ -182,7 +198,8 @@
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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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wakeup-source = <&ds1339>,"wakeup-source?",
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<&ds3231>,"wakeup-source?",
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<&mcp7940x>,"wakeup-source?",
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