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From 2ed7fb7bf15420d80c3b272a3a887e142046b7b2 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Mon, 7 Nov 2022 15:31:43 +0000
Subject: [PATCH] overlays: i2c-sensor: Add the jc42 class of sensor
This is a second attempt to solve issue 5234, since it turns out that
the mcp980x driver only supports MCP9800-MCP9803. MCP9804, MCP9805 and
MCP9808 require the jc42 driver.
See: https://github.com/raspberrypi/linux/issues/5234
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/overlays/README | 13 ++++++++++++-
.../boot/dts/overlays/i2c-sensor-common.dtsi | 18 +++++++++++++++++-
2 files changed, 29 insertions(+), 2 deletions(-)
--- a/arch/arm/boot/dts/overlays/README
+++ b/arch/arm/boot/dts/overlays/README
@@ -1970,6 +1970,15 @@ Params: addr Set the
int_pin Set the GPIO to use for interrupts (max30102
only)
+ jc42 Select any of the many JEDEC JC42.4-compliant
+ temperature sensors, including:
+ ADT7408, AT30TS00, CAT34TS02, CAT6095,
+ MAX6604, MCP9804, MCP9805, MCP9808,
+ MCP98242, MCP98243, MCP98244, MCP9843,
+ SE97, SE98, STTS424(E), STTS2002, STTS3000,
+ TSE2002, TSE2004, TS3000, and TS3001.
+ The default address is 0x18.
+
lm75 Select the Maxim LM75 temperature sensor
Valid addresses 0x48-0x4f, default 0x4f
@@ -1982,7 +1991,9 @@ Params: addr Set the
and blood-oxygen sensor
mcp980x Select the Maxim MCP980x range of temperature
- sensors (e.g. MCP9808).
+ sensors (i.e. MCP9800, MCP9801, MCP9802 and
+ MCP9803). N.B. For MCP9804, MCP9805 and MCP9808,
+ use the "jc42" option.
Valid addresses are 0x18-0x1f (default 0x18)
sht3x Select the Sensiron SHT3x temperature and
--- a/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
+++ b/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
@@ -337,6 +337,21 @@
};
};
+ fragment@22 {
+ target = <&i2cbus>;
+ __dormant__ {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ jc42: jc42@18 {
+ compatible = "jedec,jc-42.4-temp";
+ reg = <0x18>;
+ smbus-timeout-disable;
+ };
+ };
+ };
+
__overrides__ {
bme280 = <0>,"+0";
bmp085 = <0>,"+1";
@@ -361,11 +376,12 @@
max30102 = <0>,"+19";
aht10 = <0>,"+20";
mcp980x = <0>,"+21";
+ jc42 = <0>,"+22";
addr = <&bme280>,"reg:0", <&bmp280>,"reg:0", <&tmp102>,"reg:0",
<&lm75>,"reg:0", <&hdc100x>,"reg:0", <&sht3x>,"reg:0",
<&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
- <&bh1750>,"reg:0", <&mcp980x>,"reg:0";
+ <&bh1750>,"reg:0", <&mcp980x>,"reg:0", <&jc42>,"reg:0";
int_pin = <&max30102>, "interrupts:0";
};
};
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