* [PATCH 0/2] hwmon/tmp401: add support of three advanced features
@ 2022-04-11 10:03 Camel Guo
2022-04-11 10:03 ` [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x Camel Guo
2022-04-11 10:03 ` [PATCH 2/2] hwmon: (tmp401) Add support of three advanced features Camel Guo
0 siblings, 2 replies; 6+ messages in thread
From: Camel Guo @ 2022-04-11 10:03 UTC (permalink / raw)
To: linux, jdelvare, robh+dt, krzk+dt
Cc: kernel, Camel Guo, linux-hwmon, devicetree, linux-kernel
According the their datasheets:
- TMP401, TMP411 and TMP43x support extended temperature range;
- TMP411 and TMP43x support n-factor correction;
- TMP43x support beta compensation.
In order to make it possible for users to enable these features and set up them
based on their needs, this patch series adds the following devicetree bindings:
- ti,extended-range-enable;
- ti,n-factor;
- ti,beta-compensation.
In the meanwhile, tmp401 driver reads them and configures the coressponding
registers accordingly.
Cc: linux-hwmon@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Camel Guo (2):
dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
hwmon: (tmp401) Add support of three advanced features
.../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
MAINTAINERS | 1 +
drivers/hwmon/tmp401.c | 43 ++++++-
3 files changed, 154 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
base-commit: ce522ba9ef7e2d9fb22a39eb3371c0c64e2a433e
--
2.30.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
2022-04-11 10:03 [PATCH 0/2] hwmon/tmp401: add support of three advanced features Camel Guo
@ 2022-04-11 10:03 ` Camel Guo
2022-04-12 11:53 ` Krzysztof Kozlowski
2022-04-11 10:03 ` [PATCH 2/2] hwmon: (tmp401) Add support of three advanced features Camel Guo
1 sibling, 1 reply; 6+ messages in thread
From: Camel Guo @ 2022-04-11 10:03 UTC (permalink / raw)
To: linux, jdelvare, robh+dt, krzk+dt
Cc: kernel, Camel Guo, linux-hwmon, devicetree, linux-kernel, Camel Guo
From: Camel Guo <camelg@axis.com>
Document the TMP401, TMP411 and TMP43x device devicetree bindings
Signed-off-by: Camel Guo <camelg@axis.com>
---
.../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 112 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
new file mode 100644
index 000000000000..28be5cbb009b
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ti,tmp401.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TMP401, TPM411 and TMP43x temperature sensor
+
+maintainers:
+ - Guenter Roeck <linux@roeck-us.net>
+
+description: |
+ ±1°C Remote and Local temperature sensor
+
+ Datasheets:
+ https://www.ti.com/lit/ds/symlink/tmp401.pdf
+ https://www.ti.com/lit/ds/symlink/tmp411.pdf
+ https://www.ti.com/lit/ds/symlink/tmp431.pdf
+ https://www.ti.com/lit/ds/symlink/tmp435.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ - ti,tmp431
+ - ti,tmp432
+ - ti,tmp435
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ ti,extended-range-enable:
+ description: |
+ When set, this sensor measures over extended temperature range.
+ type: boolean
+
+ ti,n-factor:
+ description: |
+ The value (two's complement) to be programmed in the n-factor correction
+ register.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ items:
+ minimum: 0
+ maximum: 255
+
+ ti,beta-compensation:
+ description: |
+ The value to be programmed in the beta range register.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ items:
+ minimum: 0
+ maximum: 15
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ then:
+ properties:
+ ti,n-factor: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ then:
+ properties:
+ ti,beta-compensation: false
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp401";
+ reg = <0x4c>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp431";
+ reg = <0x4c>;
+ ti,extended-range-enable;
+ ti,n-factor = <0x3b>;
+ ti,beta-compensation = <0x7>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 61d9f114c37f..6b0d8f5cc68e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19838,6 +19838,7 @@ TMP401 HARDWARE MONITOR DRIVER
M: Guenter Roeck <linux@roeck-us.net>
L: linux-hwmon@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
F: Documentation/hwmon/tmp401.rst
F: drivers/hwmon/tmp401.c
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread* Re: [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
2022-04-11 10:03 ` [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x Camel Guo
@ 2022-04-12 11:53 ` Krzysztof Kozlowski
2022-04-12 14:08 ` Camel Guo
0 siblings, 1 reply; 6+ messages in thread
From: Krzysztof Kozlowski @ 2022-04-12 11:53 UTC (permalink / raw)
To: Camel Guo, linux, jdelvare, robh+dt, krzk+dt
Cc: kernel, linux-hwmon, devicetree, linux-kernel, Camel Guo
On 11/04/2022 12:03, Camel Guo wrote:
> From: Camel Guo <camelg@axis.com>
>
> Document the TMP401, TMP411 and TMP43x device devicetree bindings
>
> Signed-off-by: Camel Guo <camelg@axis.com>
> ---
> .../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
> MAINTAINERS | 1 +
> 2 files changed, 112 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
>
Thank you for your patch. There is something to discuss/improve.
> diff --git a/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
> new file mode 100644
> index 000000000000..28be5cbb009b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
> @@ -0,0 +1,111 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/hwmon/ti,tmp401.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TMP401, TPM411 and TMP43x temperature sensor
> +
> +maintainers:
> + - Guenter Roeck <linux@roeck-us.net>
> +
> +description: |
> + ±1°C Remote and Local temperature sensor
> +
> + Datasheets:
> + https://www.ti.com/lit/ds/symlink/tmp401.pdf
> + https://www.ti.com/lit/ds/symlink/tmp411.pdf
> + https://www.ti.com/lit/ds/symlink/tmp431.pdf
> + https://www.ti.com/lit/ds/symlink/tmp435.pdf
> +
> +properties:
> + compatible:
> + enum:
> + - ti,tmp401
> + - ti,tmp411
> + - ti,tmp431
> + - ti,tmp432
> + - ti,tmp435
Blank line, please.
> + reg:
> + maxItems: 1
> +
> + '#address-cells':
> + const: 1
> +
> + '#size-cells':
> + const: 0
> +
> + ti,extended-range-enable:
> + description: |
No need for "|". Here and in most of other cases below.
> + When set, this sensor measures over extended temperature range.
> + type: boolean
> +
> + ti,n-factor:
> + description: |
> + The value (two's complement) to be programmed in the n-factor correction
> + register.
Do not describe the programming model (registers) but hardware property
instead.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + items:
> + minimum: 0
> + maximum: 255
> +
> + ti,beta-compensation:
> + description: |
> + The value to be programmed in the beta range register.
The same, register values should not be stored in DT.
> + $ref: /schemas/types.yaml#/definitions/uint32
> + items:
> + minimum: 0
> + maximum: 15
> +
Best regards,
Krzysztof
^ permalink raw reply [flat|nested] 6+ messages in thread
* Re: [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
2022-04-12 11:53 ` Krzysztof Kozlowski
@ 2022-04-12 14:08 ` Camel Guo
0 siblings, 0 replies; 6+ messages in thread
From: Camel Guo @ 2022-04-12 14:08 UTC (permalink / raw)
To: Krzysztof Kozlowski, Camel Guo, linux, jdelvare, robh+dt, krzk+dt
Cc: kernel, linux-hwmon, devicetree, linux-kernel
On 4/12/22 13:53, Krzysztof Kozlowski wrote:
> On 11/04/2022 12:03, Camel Guo wrote:
>> From: Camel Guo <camelg@axis.com>
>>
>> Document the TMP401, TMP411 and TMP43x device devicetree bindings
>>
>> Signed-off-by: Camel Guo <camelg@axis.com>
>> ---
>> .../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
>> MAINTAINERS | 1 +
>> 2 files changed, 112 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
>>
>> + - ti,tmp401
>> + - ti,tmp411
>> + - ti,tmp431
>> + - ti,tmp432
>> + - ti,tmp435
>
> Blank line, please.
Fixed
>
>> + reg:
>> + maxItems: 1
>> +
>> + '#address-cells':
>> + const: 1
>> +
>> + '#size-cells':
>> + const: 0
>> +
>> + ti,extended-range-enable:
>> + description: |
>
> No need for "|". Here and in most of other cases below.
Fixed
>
>> + When set, this sensor measures over extended temperature range.
>> + type: boolean
>> +
>> + ti,n-factor:
>> + description: |
>> + The value (two's complement) to be programmed in the n-factor correction
>> + register.
>
> Do not describe the programming model (registers) but hardware property
> instead.
Make another try. Hope it is clear now.
>
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + items:
>> + minimum: 0
>> + maximum: 255
>> +
>> + ti,beta-compensation:
>> + description: |
>> + The value to be programmed in the beta range register.
>
> The same, register values should not be stored in DT.
>
>> + $ref: /schemas/types.yaml#/definitions/uint32
>> + items:
>> + minimum: 0
>> + maximum: 15
>> +
>
>
> Best regards,
> Krzysztof
Fixed in v2. Please review that instead.
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 2/2] hwmon: (tmp401) Add support of three advanced features
2022-04-11 10:03 [PATCH 0/2] hwmon/tmp401: add support of three advanced features Camel Guo
2022-04-11 10:03 ` [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x Camel Guo
@ 2022-04-11 10:03 ` Camel Guo
1 sibling, 0 replies; 6+ messages in thread
From: Camel Guo @ 2022-04-11 10:03 UTC (permalink / raw)
To: linux, jdelvare, robh+dt, krzk+dt
Cc: kernel, Camel Guo, linux-hwmon, devicetree, linux-kernel
tmp401 driver supports TMP401, TMP411 and TMP43X temperature sensors.
According to their datasheet:
- all of them support extended temperature range feature;
- TMP411 and TPM43X support n-factor correction feature;
- TMP43X support beta compensation feature.
In order to support setting them during bootup, this commit reads
ti,extended-range-enable, ti,n-factor and ti,beta-compensation and set
the corresponding registers during probing.
Signed-off-by: Camel Guo <camel.guo@axis.com>
---
drivers/hwmon/tmp401.c | 43 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 42 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/tmp401.c b/drivers/hwmon/tmp401.c
index b86d9df7105d..75cdf5d2907e 100644
--- a/drivers/hwmon/tmp401.c
+++ b/drivers/hwmon/tmp401.c
@@ -41,6 +41,8 @@ enum chips { tmp401, tmp411, tmp431, tmp432, tmp435 };
#define TMP401_STATUS 0x02
#define TMP401_CONFIG 0x03
#define TMP401_CONVERSION_RATE 0x04
+#define TMP4XX_N_FACTOR_REG 0x18
+#define TMP43X_BETA_RANGE 0x25
#define TMP401_TEMP_CRIT_HYST 0x21
#define TMP401_MANUFACTURER_ID_REG 0xFE
#define TMP401_DEVICE_ID_REG 0xFF
@@ -543,6 +545,7 @@ static int tmp401_init_client(struct tmp401_data *data)
struct regmap *regmap = data->regmap;
u32 config, config_orig;
int ret;
+ u32 val = 0;
/* Set conversion rate to 2 Hz */
ret = regmap_write(regmap, TMP401_CONVERSION_RATE, 5);
@@ -557,10 +560,48 @@ static int tmp401_init_client(struct tmp401_data *data)
config_orig = config;
config &= ~TMP401_CONFIG_SHUTDOWN;
+ if (of_property_read_bool(data->client->dev.of_node, "ti,extended-range-enable")) {
+ /* Enable measurement over extended temperature range */
+ config |= TMP401_CONFIG_RANGE;
+ }
+
data->extended_range = !!(config & TMP401_CONFIG_RANGE);
- if (config != config_orig)
+ if (config != config_orig) {
ret = regmap_write(regmap, TMP401_CONFIG, config);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = of_property_read_u32(data->client->dev.of_node, "ti,n-factor", &val);
+ if (!ret) {
+ if (data->kind == tmp401) {
+ dev_err(&data->client->dev, "ti,tmp401 does not support n-factor correction\n");
+ return -EINVAL;
+ }
+ if (val > 255) {
+ dev_err(&data->client->dev, "n-factor is invalid (%u)\n", val);
+ return -EINVAL;
+ }
+ ret = regmap_write(regmap, TMP4XX_N_FACTOR_REG, val);
+ if (ret < 0)
+ return ret;
+ }
+
+ ret = of_property_read_u32(data->client->dev.of_node, "ti,beta-compensation", &val);
+ if (!ret) {
+ if (data->kind == tmp401 || data->kind == tmp411) {
+ dev_err(&data->client->dev, "ti,tmp401 or ti,tmp411 does not support beta compensation\n");
+ return -EINVAL;
+ }
+ if (val > 15) {
+ dev_err(&data->client->dev, "beta-compensation is invalid (%u)\n", val);
+ return -EINVAL;
+ }
+ ret = regmap_write(regmap, TMP43X_BETA_RANGE, val);
+ if (ret < 0)
+ return ret;
+ }
return ret;
}
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
* [PATCH 0/2] hwmon/tmp401: add support of three advanced features
@ 2022-04-11 9:56 Camel Guo
2022-04-11 9:56 ` [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x Camel Guo
0 siblings, 1 reply; 6+ messages in thread
From: Camel Guo @ 2022-04-11 9:56 UTC (permalink / raw)
To: inux, jdelvare, robh+dt, krzk+dt
Cc: kernel, Camel Guo, linux-hwmon, devicetree, linux-kernel
According the their datasheets:
- TMP401, TMP411 and TMP43x support extended temperature range;
- TMP411 and TMP43x support n-factor correction;
- TMP43x support beta compensation.
In order to make it possible for users to enable these features and set up them
based on their needs, this patch series adds the following devicetree bindings:
- ti,extended-range-enable;
- ti,n-factor;
- ti,beta-compensation.
In the meanwhile, tmp401 driver reads them and configures the coressponding
registers accordingly.
Cc: linux-hwmon@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Camel Guo (2):
dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
hwmon: (tmp401) Add support of three advanced features
.../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
MAINTAINERS | 1 +
drivers/hwmon/tmp401.c | 43 ++++++-
3 files changed, 154 insertions(+), 1 deletion(-)
create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
base-commit: ce522ba9ef7e2d9fb22a39eb3371c0c64e2a433e
--
2.30.2
^ permalink raw reply [flat|nested] 6+ messages in thread
* [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x
2022-04-11 9:56 [PATCH 0/2] hwmon/tmp401: add " Camel Guo
@ 2022-04-11 9:56 ` Camel Guo
0 siblings, 0 replies; 6+ messages in thread
From: Camel Guo @ 2022-04-11 9:56 UTC (permalink / raw)
To: inux, jdelvare, robh+dt, krzk+dt
Cc: kernel, Camel Guo, linux-hwmon, devicetree, linux-kernel, Camel Guo
From: Camel Guo <camelg@axis.com>
Document the TMP401, TMP411 and TMP43x device devicetree bindings
Signed-off-by: Camel Guo <camelg@axis.com>
---
.../devicetree/bindings/hwmon/ti,tmp401.yaml | 111 ++++++++++++++++++
MAINTAINERS | 1 +
2 files changed, 112 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
diff --git a/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
new file mode 100644
index 000000000000..28be5cbb009b
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
@@ -0,0 +1,111 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ti,tmp401.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TMP401, TPM411 and TMP43x temperature sensor
+
+maintainers:
+ - Guenter Roeck <linux@roeck-us.net>
+
+description: |
+ ±1°C Remote and Local temperature sensor
+
+ Datasheets:
+ https://www.ti.com/lit/ds/symlink/tmp401.pdf
+ https://www.ti.com/lit/ds/symlink/tmp411.pdf
+ https://www.ti.com/lit/ds/symlink/tmp431.pdf
+ https://www.ti.com/lit/ds/symlink/tmp435.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ - ti,tmp431
+ - ti,tmp432
+ - ti,tmp435
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ ti,extended-range-enable:
+ description: |
+ When set, this sensor measures over extended temperature range.
+ type: boolean
+
+ ti,n-factor:
+ description: |
+ The value (two's complement) to be programmed in the n-factor correction
+ register.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ items:
+ minimum: 0
+ maximum: 255
+
+ ti,beta-compensation:
+ description: |
+ The value to be programmed in the beta range register.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ items:
+ minimum: 0
+ maximum: 15
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ then:
+ properties:
+ ti,n-factor: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ then:
+ properties:
+ ti,beta-compensation: false
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp401";
+ reg = <0x4c>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp431";
+ reg = <0x4c>;
+ ti,extended-range-enable;
+ ti,n-factor = <0x3b>;
+ ti,beta-compensation = <0x7>;
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 61d9f114c37f..6b0d8f5cc68e 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -19838,6 +19838,7 @@ TMP401 HARDWARE MONITOR DRIVER
M: Guenter Roeck <linux@roeck-us.net>
L: linux-hwmon@vger.kernel.org
S: Maintained
+F: Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
F: Documentation/hwmon/tmp401.rst
F: drivers/hwmon/tmp401.c
--
2.30.2
^ permalink raw reply related [flat|nested] 6+ messages in thread
end of thread, other threads:[~2022-04-12 14:08 UTC | newest]
Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
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2022-04-11 10:03 [PATCH 0/2] hwmon/tmp401: add support of three advanced features Camel Guo
2022-04-11 10:03 ` [PATCH 1/2] dt-bindings: hwmon: Add TMP401, TMP411 and TMP43x Camel Guo
2022-04-12 11:53 ` Krzysztof Kozlowski
2022-04-12 14:08 ` Camel Guo
2022-04-11 10:03 ` [PATCH 2/2] hwmon: (tmp401) Add support of three advanced features Camel Guo
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