64 lines
1.8 KiB
Diff
64 lines
1.8 KiB
Diff
From fd478b369992e56665de3aabf0e19e24b5fa5e43 Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Fri, 26 Feb 2021 14:19:00 +0000
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Subject: [PATCH] overlays: i2c-rtc: Add the Dallas DS1340
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See: https://github.com/raspberrypi/linux/issues/4180
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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 | 2 ++
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arch/arm/boot/dts/overlays/i2c-rtc-overlay.dts | 16 ++++++++++++++++
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2 files changed, 18 insertions(+)
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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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@@ -1311,6 +1311,8 @@ Params: abx80x Select o
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ds1339 Select the DS1339 device
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+ ds1340 Select the DS1340 device
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+
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ds3231 Select the DS3231 device
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m41t62 Select the M41T62 device
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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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@@ -231,6 +231,20 @@
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};
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};
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+ fragment@17 {
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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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+ ds1340: ds1340@68 {
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+ compatible = "dallas,ds1340";
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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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frag100: fragment@100 {
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target = <&i2c_arm>;
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i2cbus: __overlay__ {
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@@ -242,6 +256,7 @@
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abx80x = <0>,"+0";
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ds1307 = <0>,"+1";
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ds1339 = <0>,"+2";
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+ ds1340 = <0>,"+17";
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ds3231 = <0>,"+3";
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mcp7940x = <0>,"+4";
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mcp7941x = <0>,"+5";
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@@ -273,6 +288,7 @@
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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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