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hwmon-lm75: backport support for PCT2075 thermal sensor (#165)
New platform HW may use the NXP-PCT2075 thermal sensor which is compatible with the lm75 sensor. These patches backport support for that sensor from 5.x kernels. upstream kernel commit id: 557c7ffa2f28 hwmon: (lm75) add support for PCT2075 (5.4-rc1) 985e225142cf dt-bindings: hwmon: Add missing documentation for lm75 (5.1-rc1) be889be7785d dt-bindings: hwmon: Add tmp75b to lm75.txt (5.2-rc1) 5ac6badc5aa0 device-tree: bindinds: add NXP PCT2075 as compatible device to LM75 (5.4-rc1) all the commits can be remove once upgrade to 5.10
1 parent dcf469b commit 9a70549

5 files changed

Lines changed: 243 additions & 2 deletions

‎patch/0001-hwmon-lm75-add-support-for-PCT2075.patch‎

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From 90b3a0b833131831bf259e3506aaf9f29317aae9 Mon Sep 17 00:00:00 2001
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From: Daniel Mack <daniel@zonque.org>
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Date: Thu, 11 Jul 2019 14:45:04 +0200
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Subject: [PATCH 1/6] hwmon: (lm75) add support for PCT2075
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The NXP PCT2075 is largely compatible with other chips already supported
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by the LM75 driver. It uses an 11-bit resolution and defaults to 100 ms
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sampling period. The datasheet is here:
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https://www.nxp.com/docs/en/data-sheet/PCT2075.pdf
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Signed-off-by: Daniel Mack <daniel@zonque.org>
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Link: https://lore.kernel.org/r/20190711124504.7580-2-daniel@zonque.org
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[groeck: Documentation update]
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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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---
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Documentation/hwmon/lm75 | 35 +++++++++++++++++++++++++----------
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drivers/hwmon/lm75.c | 10 ++++++++++
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2 files changed, 35 insertions(+), 10 deletions(-)
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diff --git a/Documentation/hwmon/lm75 b/Documentation/hwmon/lm75
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index ac95edfcd907..ef7c2afa604e 100644
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--- a/Documentation/hwmon/lm75
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+++ b/Documentation/hwmon/lm75
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@@ -46,20 +46,35 @@ Supported chips:
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Prefixes: 'tmp100', 'tmp101', 'tmp105', 'tmp112', 'tmp175', 'tmp75', 'tmp75c', 'tmp275'
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Addresses scanned: none
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Datasheet: Publicly available at the Texas Instruments website
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- http://www.ti.com/product/tmp100
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- http://www.ti.com/product/tmp101
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- http://www.ti.com/product/tmp105
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- http://www.ti.com/product/tmp112
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- http://www.ti.com/product/tmp75
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- http://www.ti.com/product/tmp75c
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- http://www.ti.com/product/tmp175
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- http://www.ti.com/product/tmp275
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- * NXP LM75B
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- Prefix: 'lm75b'
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+
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+ http://www.ti.com/product/tmp100
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+
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+ http://www.ti.com/product/tmp101
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+
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+ http://www.ti.com/product/tmp105
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+
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+ http://www.ti.com/product/tmp112
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+
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+ http://www.ti.com/product/tmp75
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+
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+ http://www.ti.com/product/tmp75b
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+
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+ http://www.ti.com/product/tmp75c
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+
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+ http://www.ti.com/product/tmp175
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+
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+ http://www.ti.com/product/tmp275
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+
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+ * NXP LM75B, PCT2075
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+
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+ Prefix: 'lm75b', 'pct2075'
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+
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Addresses scanned: none
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Datasheet: Publicly available at the NXP website
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http://www.nxp.com/documents/data_sheet/LM75B.pdf
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+ http://www.nxp.com/docs/en/data-sheet/PCT2075.pdf
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+
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Author: Frodo Looijaard <frodol@dds.nl>
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Description
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diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
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index 7f28912c9abc..9a04af3d7449 100644
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--- a/drivers/hwmon/lm75.c
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+++ b/drivers/hwmon/lm75.c
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@@ -48,6 +48,7 @@ enum lm75_type { /* keep sorted in alphabetical order */
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max6625,
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max6626,
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mcp980x,
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+ pct2075,
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stds75,
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tcn75,
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tmp100,
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@@ -343,6 +344,10 @@ lm75_probe(struct i2c_client *client, const struct i2c_device_id *id)
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data->resolution = 9;
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data->sample_time = MSEC_PER_SEC / 8;
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break;
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+ case pct2075:
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+ data->resolution = 11;
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+ data->sample_time = MSEC_PER_SEC / 10;
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+ break;
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case mcp980x:
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data->resolution_limits = 9;
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/* fall through */
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@@ -416,6 +421,7 @@ static const struct i2c_device_id lm75_ids[] = {
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{ "max6625", max6625, },
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{ "max6626", max6626, },
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{ "mcp980x", mcp980x, },
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+ { "pct2075", pct2075, },
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{ "stds75", stds75, },
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{ "tcn75", tcn75, },
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{ "tmp100", tmp100, },
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@@ -475,6 +481,10 @@ static const struct of_device_id lm75_of_match[] = {
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.compatible = "maxim,mcp980x",
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.data = (void *)mcp980x
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},
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+ {
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+ .compatible = "nxp,pct2075",
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+ .data = (void *)pct2075
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+ },
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{
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.compatible = "st,stds75",
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.data = (void *)stds75
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--
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2.17.1
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‎patch/0004-dt-bindings-hwmon-Add-missing-documentation-for-lm75.patch‎

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From c3eab8b7b730548ade06b71fad6b1d12fd53f28a Mon Sep 17 00:00:00 2001
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From: Jagan Teki <jagan@amarulasolutions.com>
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Date: Tue, 12 Feb 2019 17:08:08 +0530
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Subject: [PATCH 4/6] dt-bindings: hwmon: Add missing documentation for lm75
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Add missing dt-binding documentation for lm75 hwmon sensor.
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Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
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Acked-by: Rob Herring <robh@kernel.org>
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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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---
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.../devicetree/bindings/hwmon/lm75.txt | 37 +++++++++++++++++++
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1 file changed, 37 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/hwmon/lm75.txt
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diff --git a/Documentation/devicetree/bindings/hwmon/lm75.txt b/Documentation/devicetree/bindings/hwmon/lm75.txt
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new file mode 100644
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index 000000000000..12d8cf7cf592
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/hwmon/lm75.txt
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@@ -0,0 +1,37 @@
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+*LM75 hwmon sensor.
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+
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+Required properties:
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+- compatible: manufacturer and chip name, one of
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+ "adi,adt75",
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+ "dallas,ds1775",
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+ "dallas,ds75",
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+ "dallas,ds7505",
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+ "gmt,g751",
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+ "national,lm75",
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+ "national,lm75a",
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+ "national,lm75b",
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+ "maxim,max6625",
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+ "maxim,max6626",
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+ "maxim,max31725",
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+ "maxim,max31726",
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+ "maxim,mcp980x",
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+ "st,stds75",
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+ "st,stlm75",
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+ "microchip,tcn75",
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+ "ti,tmp100",
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+ "ti,tmp101",
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+ "ti,tmp105",
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+ "ti,tmp112",
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+ "ti,tmp175",
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+ "ti,tmp275",
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+ "ti,tmp75",
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+ "ti,tmp75c",
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+
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+- reg: I2C bus address of the device
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+
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+Example:
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+
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+sensor@48 {
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+ compatible = "st,stlm75";
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+ reg = <0x48>;
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+};
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--
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2.17.1
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‎patch/0005-dt-bindings-hwmon-Add-tmp75b-to-lm75.txt.patch‎

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From de27b34d7fc91ed109c78ed89442f42427ac0c5c Mon Sep 17 00:00:00 2001
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From: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
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Date: Fri, 3 May 2019 17:15:01 +0100
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Subject: [PATCH 5/6] dt-bindings: hwmon: Add tmp75b to lm75.txt
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Update the LM75's devicetree definition to allow Texas Instruments
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TMP75B be probed.
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Signed-off-by: Iker Perez del Palomar Sustatxa <iker.perez@codethink.co.uk>
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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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---
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Documentation/devicetree/bindings/hwmon/lm75.txt | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/Documentation/devicetree/bindings/hwmon/lm75.txt b/Documentation/devicetree/bindings/hwmon/lm75.txt
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index 12d8cf7cf592..586b5ed70be7 100644
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--- a/Documentation/devicetree/bindings/hwmon/lm75.txt
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+++ b/Documentation/devicetree/bindings/hwmon/lm75.txt
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@@ -25,6 +25,7 @@ Required properties:
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"ti,tmp175",
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"ti,tmp275",
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"ti,tmp75",
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+ "ti,tmp75b",
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"ti,tmp75c",
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- reg: I2C bus address of the device
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--
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2.17.1
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‎patch/0006-device-tree-bindinds-add-NXP-PCT2075-as-compatible-d.patch‎

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From 248bae1d862533e1e1b6a1a0ba32f8b73bbfe57e Mon Sep 17 00:00:00 2001
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From: Daniel Mack <daniel@zonque.org>
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Date: Thu, 11 Jul 2019 14:45:03 +0200
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Subject: [PATCH 6/6] device-tree: bindinds: add NXP PCT2075 as compatible
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device to LM75
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The PCT2075 is compatible to other chips that are already handled by
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the LM75 driver.
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Signed-off-by: Daniel Mack <daniel@zonque.org>
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Link: https://lore.kernel.org/r/20190711124504.7580-1-daniel@zonque.org
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Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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---
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Documentation/devicetree/bindings/hwmon/lm75.txt | 1 +
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1 file changed, 1 insertion(+)
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diff --git a/Documentation/devicetree/bindings/hwmon/lm75.txt b/Documentation/devicetree/bindings/hwmon/lm75.txt
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index 586b5ed70be7..273616702c51 100644
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--- a/Documentation/devicetree/bindings/hwmon/lm75.txt
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+++ b/Documentation/devicetree/bindings/hwmon/lm75.txt
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@@ -15,6 +15,7 @@ Required properties:
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"maxim,max31725",
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"maxim,max31726",
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"maxim,mcp980x",
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+ "nxp,pct2075",
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"st,stds75",
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"st,stlm75",
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"microchip,tcn75",
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--
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2.17.1
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‎patch/series‎

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# This series applies on GIT commit 18c5597832fcf6988111b05a9a1607ae148723c
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# (marvel)
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# (Marvell)
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# 0001-armhf-default-config-for-the-sonic-patches.patch
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# 0001-arm64-default-config-for-sonic-patches.patch
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@@ -32,7 +32,12 @@ driver-support-optoe-chunk-offset-fix.patch
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driver-support-optoe-QSFP_DD.patch
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driver-net-tg3-add-param-short-preamble-and-reset.patch
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e1000-Do-not-perform-reset-in-reset_task-if-we-are-a.patch
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# (Marvel)
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0001-hwmon-lm75-add-support-for-PCT2075.patch
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0004-dt-bindings-hwmon-Add-missing-documentation-for-lm75.patch
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0005-dt-bindings-hwmon-Add-tmp75b-to-lm75.txt.patch
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0006-device-tree-bindinds-add-NXP-PCT2075-as-compatible-d.patch
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#
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# (Marvell)
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# 0042-Marvell-a385-Micron-4G-flash-support.patch
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# 0042-armhf-additional-configs.patch
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# 0042-armhf-proc-dma-kconfig.patch

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