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49 lines
1.9 KiB
Diff
49 lines
1.9 KiB
Diff
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From ef6a692bf0e076c905a912fbb8e65481c354a7ca Mon Sep 17 00:00:00 2001
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From: Phil Elwell <phil@raspberrypi.com>
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Date: Wed, 23 Nov 2022 11:51:38 +0000
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Subject: [PATCH] overlays: i2c-sensor: Make smbus-timeout-disable
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optional
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Although disabling the SMBUS timeout may be useful, not all chips
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support it. The driver treats attempting to disable the timeout on a
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non-supporting chip as an error, so make it an option enabled using the
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no_timeout parameter.
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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 | 5 +++++
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arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi | 2 +-
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2 files changed, 6 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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@@ -1999,6 +1999,11 @@ Params: addr Set the
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use the "jc42" option.
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Valid addresses are 0x18-0x1f (default 0x18)
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+ no_timeout Disable the SMBUS timeout. N.B. Only supported
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+ by some jc42 devices - using with an
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+ incompatible device can stop it from being
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+ activated.
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+
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sht3x Select the Sensiron SHT3x temperature and
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humidity sensor. Valid addresses 0x44-0x45,
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default 0x44
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--- a/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
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+++ b/arch/arm/boot/dts/overlays/i2c-sensor-common.dtsi
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@@ -347,7 +347,6 @@
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jc42: jc42@18 {
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compatible = "jedec,jc-42.4-temp";
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reg = <0x18>;
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- smbus-timeout-disable;
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};
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};
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};
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@@ -383,5 +382,6 @@
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<&ds1621>,"reg:0", <&bme680>,"reg:0", <&ccs811>,"reg:0",
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<&bh1750>,"reg:0", <&mcp980x>,"reg:0", <&jc42>,"reg:0";
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int_pin = <&max30102>, "interrupts:0";
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+ no_timeout = <&jc42>, "smbus-timeout-disable?";
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};
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};
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