[PATCH 0/4] hwmon: ntc_thermistor: prepose vendor prefix change

[PATCH 0/4] hwmon: ntc_thermistor: prepose vendor prefix change

[Naveen Krishna Chatradhi]

As Murata is the manufacturer of the NTC (Negative Temperature coefficient)
based Thermistors. ntc_thermistor driver extensively used the prefix "ntc".
But, vendor-prefix should be "murata" instead of "ntc".

This patchset
1. Updates the vendor-prefix, DT bindings and Documentation,
   where ever necessary.
2. Adds thermistor nodes to Exynos5420 and Exynos5800 based boards.

Patches:
1/4. devicetree: bindings: Document murata vendor prefix
     Adds the vendor prefix "murata" to vendor-prefixes.txt.
2/4. hwmon: ntc_thermistor: Use the manufacturer name properly
     Updates the driver, Kconfig, device tree bindings and Documentation
     with the Manufacturer/vendor information.
3/4. ARM: DTS: use new compatible string as per the documentation
     Updates the device node in Exynos4412 based Trats2 board
     with the new device tree bindings.
4/4. ARM: DTS: Add NTC thermistor nodes as child nodes to ADC
     Adds Thermistor nodes to Exynos5420 and Exynos5800 based boards.

This patchset
Naveen Krishna Chatradhi (4):
  devicetree: bindings: Document murata vendor prefix
  hwmon: ntc_thermistor: Use the manufacturer name properly
  ARM: DTS: Add NTC thermistor nodes as child nodes to ADC
  ARM: DTS: use new compatible string as per the documentation

 .../devicetree/bindings/arm/samsung/exynos-adc.txt |    2 +-
 .../devicetree/bindings/hwmon/ntc_thermistor.txt   |   12 ++++----
 .../devicetree/bindings/vendor-prefixes.txt        |    1 +
 Documentation/hwmon/ntc_thermistor                 |    8 ++---
 arch/arm/boot/dts/exynos4412-trats2.dts            |    4 +--
 arch/arm/boot/dts/exynos5420-peach-pit.dts         |   32 ++++++++++++++++++++
 drivers/hwmon/Kconfig                              |    5 +--
 drivers/hwmon/ntc_thermistor.c                     |   12 ++++----
 8 files changed, 55 insertions(+), 21 deletions(-)

-- 
1.7.9.5

[PATCH 1/4] devicetree: bindings: Document murata vendor prefix

[Naveen Krishna Chatradhi]

Add Murata Manufacturing Co., Ltd. to the list of device tree
vendor prefixes.

Murata manufactures NTC (Negative Temperature Coefficient) based
Thermistors for small scale applications like Mobiles and PDAs.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
---
This changes is needed for the following reasons

1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
   Thus, giving an error when checked with scripts/checkpatch.pl
2. Murata Manufacturing Co., Ltd. Is the vendor for the
   NTC (Negative Temperature Coefficient) based thermistors.
   Hence, "murata" is the right vendor-prefix, Not "ntc".
3. NTC is a technology used, But the prefix "ntc" is wrongly
   and heavily used in the driver and the documentation.

 .../devicetree/bindings/vendor-prefixes.txt        |    1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
index 4d7f375..a39b7d7 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -84,6 +84,7 @@ moxa	Moxa
 mpl	MPL AG
 mundoreader	Mundo Reader S.L.
 mxicy	Macronix International Co., Ltd.
+murata	Murata Manufacturing Co., Ltd.
 national	National Semiconductor
 neonode		Neonode Inc.
 netgear	NETGEAR
-- 
1.7.9.5

[PATCH 2/4] hwmon: ntc_thermistor: Use the manufacturer name properly

[Naveen Krishna Chatradhi]

Murata Manufacturing Co., Ltd is the vendor for
NTC (Negative Temperature coefficient) based Thermistors.
But, the driver extensively uses "NTC" as the vendor name.

This patch corrects the vendor name also updates the
compatibility strings according to the vendor-prefix.txt

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
---
This changes is needed for the following reasons

1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
   Thus, giving an error when checked with scripts/checkpatch.pl
2. Murata Manufacturing Co., Ltd. Is the vendor for the
   NTC (Negative Temperature Coefficient) based thermistors.
   Hence, "murata" is the right vendor-prefix, Not "ntc".
3. NTC is a technology used, But the prefix "ntc" is wrongly
   and heavily used in the driver and the documentation.

 .../devicetree/bindings/arm/samsung/exynos-adc.txt |    2 +-
 .../devicetree/bindings/hwmon/ntc_thermistor.txt   |   12 ++++++------
 Documentation/hwmon/ntc_thermistor                 |    8 ++++----
 drivers/hwmon/Kconfig                              |    5 +++--
 drivers/hwmon/ntc_thermistor.c                     |   12 ++++++------
 5 files changed, 20 insertions(+), 19 deletions(-)

diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
index 5d49f2b..832fe8c 100644
--- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
+++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
@@ -48,7 +48,7 @@ adc@12D10000 {
 
 	/* NTC thermistor is a hwmon device */
 	ncp15wb473@0 {
-		compatible = "ntc,ncp15wb473";
+		compatible = "murata,ncp15wb473";
 		pullup-uv = <1800000>;
 		pullup-ohm = <47000>;
 		pulldown-ohm = <0>;
diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
index c6f6667..4e9f344 100644
--- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
+++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
@@ -3,11 +3,11 @@ NTC Thermistor hwmon sensors
 
 Requires node properties:
 - "compatible" value : one of
-	"ntc,ncp15wb473"
-	"ntc,ncp18wb473"
-	"ntc,ncp21wb473"
-	"ntc,ncp03wb473"
-	"ntc,ncp15wl333"
+	"murata,ncp15wb473"
+	"murata,ncp18wb473"
+	"murata,ncp21wb473"
+	"murata,ncp03wb473"
+	"murata,ncp15wl333"
 - "pullup-uv"	Pull up voltage in micro volts
 - "pullup-ohm"	Pull up resistor value in ohms
 - "pulldown-ohm" Pull down resistor value in ohms
@@ -21,7 +21,7 @@ Read more about iio bindings at
 
 Example:
 	ncp15wb473@0 {
-		compatible = "ntc,ncp15wb473";
+		compatible = "murata,ncp15wb473";
 		pullup-uv = <1800000>;
 		pullup-ohm = <47000>;
 		pulldown-ohm = <0>;
diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor
index 3bfda94..057b770 100644
--- a/Documentation/hwmon/ntc_thermistor
+++ b/Documentation/hwmon/ntc_thermistor
@@ -1,7 +1,7 @@
 Kernel driver ntc_thermistor
 =================
 
-Supported thermistors:
+Supported thermistors from Murata:
 * Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333
   Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333'
   Datasheet: Publicly available at Murata
@@ -15,9 +15,9 @@ Authors:
 Description
 -----------
 
-The NTC thermistor is a simple thermistor that requires users to provide the
-resistance and lookup the corresponding compensation table to get the
-temperature input.
+The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor
+that requires users to provide the resistance and lookup the corresponding
+compensation table to get the temperature input.
 
 The NTC driver provides lookup tables with a linear approximation function
 and four circuit models with an option not to use any of the four models.
diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
index 08531a1..154851b 100644
--- a/drivers/hwmon/Kconfig
+++ b/drivers/hwmon/Kconfig
@@ -1052,7 +1052,7 @@ config SENSORS_PC87427
 	  will be called pc87427.
 
 config SENSORS_NTC_THERMISTOR
-	tristate "NTC thermistor support"
+	tristate "NTC based thermistor support from Murata"
 	depends on !OF || IIO=n || IIO
 	help
 	  This driver supports NTC thermistors sensor reading and its
@@ -1060,7 +1060,8 @@ config SENSORS_NTC_THERMISTOR
 	  send notifications about the temperature.
 
 	  Currently, this driver supports
-	  NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333.
+	  NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333
+	  from Murata.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called ntc-thermistor.
diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
index e76feb86..6c38fc8 100644
--- a/drivers/hwmon/ntc_thermistor.c
+++ b/drivers/hwmon/ntc_thermistor.c
@@ -163,15 +163,15 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
 }
 
 static const struct of_device_id ntc_match[] = {
-	{ .compatible = "ntc,ncp15wb473",
+	{ .compatible = "murata,ncp15wb473",
 		.data = &ntc_thermistor_id[0] },
-	{ .compatible = "ntc,ncp18wb473",
+	{ .compatible = "murata,ncp18wb473",
 		.data = &ntc_thermistor_id[1] },
-	{ .compatible = "ntc,ncp21wb473",
+	{ .compatible = "murata,ncp21wb473",
 		.data = &ntc_thermistor_id[2] },
-	{ .compatible = "ntc,ncp03wb473",
+	{ .compatible = "murata,ncp03wb473",
 		.data = &ntc_thermistor_id[3] },
-	{ .compatible = "ntc,ncp15wl333",
+	{ .compatible = "murata,ncp15wl333",
 		.data = &ntc_thermistor_id[4] },
 	{ },
 };
@@ -534,7 +534,7 @@ static struct platform_driver ntc_thermistor_driver = {
 
 module_platform_driver(ntc_thermistor_driver);
 
-MODULE_DESCRIPTION("NTC Thermistor Driver");
+MODULE_DESCRIPTION("NTC based Thermistor Driver from Murata");
 MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS("platform:ntc-thermistor");
-- 
1.7.9.5

[PATCH 3/4] ARM: DTS: use new compatible string as per the documentation

[Naveen Krishna Chatradhi]

As Murata is the Manufactures the NTC thermistors. The vendor
name in the compatibility is preposed to change to "murata, ncpXXX"

This patch uses the new compatibility string in exynos4412 based
Trats2 board.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Chanwoo Choi <cw00.choi-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
---
1. Updates the thermistor node in Exynos4412 based Trats2 dts
   using the new DT bindings for NTC thermistors updated with vendor-prefix

 arch/arm/boot/dts/exynos4412-trats2.dts |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
index 11967f4..d35755a 100644
--- a/arch/arm/boot/dts/exynos4412-trats2.dts
+++ b/arch/arm/boot/dts/exynos4412-trats2.dts
@@ -771,7 +771,7 @@
 	};
 
 	thermistor-ap@0 {
-		compatible = "ntc,ncp15wb473";
+		compatible = "murata,ncp15wb473";
 		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
 		pullup-ohm = <100000>;	 /* 100K */
 		pulldown-ohm = <100000>; /* 100K */
@@ -779,7 +779,7 @@
 	};
 
 	thermistor-battery@1 {
-		compatible = "ntc,ncp15wb473";
+		compatible = "murata,ncp15wb473";
 		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
 		pullup-ohm = <100000>;	 /* 100K */
 		pulldown-ohm = <100000>; /* 100K */
-- 
1.7.9.5

[PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC

[Naveen Krishna Chatradhi]

Exynos5420 based Peach PIT and Exynos5800 based PI boards have
4 NTC thermistors to measure temperatures at various points on the
board.

IIO based ADC becomes the parent and NTC thermistors are the childs,
via the HWMON interface.

Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Cc: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
---
This patch needs
1. MAX77802 PMIC device tree nodes (for ldo9)
   https://www.mail-archive.com/devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org/msg31430.html
2. Uses the DT documentation for NTC thermistors updated with vendor-prefix

 arch/arm/boot/dts/exynos5420-peach-pit.dts |   32 ++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/arch/arm/boot/dts/exynos5420-peach-pit.dts b/arch/arm/boot/dts/exynos5420-peach-pit.dts
index b96a66a..852a220 100644
--- a/arch/arm/boot/dts/exynos5420-peach-pit.dts
+++ b/arch/arm/boot/dts/exynos5420-peach-pit.dts
@@ -751,4 +751,36 @@
 	timeout-sec = <32>;
 };
 
+&adc {
+	vdd-supply = <&ldo9_reg>;
+	ncp15wb473@3 {
+		compatible = "murata,ncp15wb473";
+		pullup-uv = <1800000>;
+		pullup-ohm = <47000>;
+		pulldown-ohm = <0>;
+		io-channels = <&adc 3>;
+	};
+	ncp15wb473@4 {
+		compatible = "murata,ncp15wb473";
+		pullup-uv = <1800000>;
+		pullup-ohm = <47000>;
+		pulldown-ohm = <0>;
+		io-channels = <&adc 4>;
+	};
+	ncp15wb473@5 {
+		compatible = "murata,ncp15wb473";
+		pullup-uv = <1800000>;
+		pullup-ohm = <47000>;
+		pulldown-ohm = <0>;
+		io-channels = <&adc 5>;
+	};
+	ncp15wb473@6 {
+		compatible = "murata,ncp15wb473";
+		pullup-uv = <1800000>;
+		pullup-ohm = <47000>;
+		pulldown-ohm = <0>;
+		io-channels = <&adc 6>;
+	};
+};
+
 #include "cros-ec-keyboard.dtsi"
-- 
1.7.9.5

Re: [PATCH 1/4] devicetree: bindings: Document murata vendor prefix

[Mark Rutland]

On Tue, Jun 24, 2014 at 01:19:13PM +0100, Naveen Krishna Chatradhi wrote:
> Add Murata Manufacturing Co., Ltd. to the list of device tree
> vendor prefixes.
> 
> Murata manufactures NTC (Negative Temperature Coefficient) based
> Thermistors for small scale applications like Mobiles and PDAs.
> 
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
> ---
> This changes is needed for the following reasons
> 
> 1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
>    Thus, giving an error when checked with scripts/checkpatch.pl
> 2. Murata Manufacturing Co., Ltd. Is the vendor for the
>    NTC (Negative Temperature Coefficient) based thermistors.
>    Hence, "murata" is the right vendor-prefix, Not "ntc".
> 3. NTC is a technology used, But the prefix "ntc" is wrongly
>    and heavily used in the driver and the documentation.
> 
>  .../devicetree/bindings/vendor-prefixes.txt        |    1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index 4d7f375..a39b7d7 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -84,6 +84,7 @@ moxa	Moxa
>  mpl	MPL AG
>  mundoreader	Mundo Reader S.L.
>  mxicy	Macronix International Co., Ltd.
> +murata	Murata Manufacturing Co., Ltd.

Nit: please keep this list in alphabetical order.

Otherwise, this looks fine to me. With the order fixed:

Acked-by: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>

Mark.

>  national	National Semiconductor
>  neonode		Neonode Inc.
>  netgear	NETGEAR
> -- 
> 1.7.9.5
> 
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
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> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH 2/4] hwmon: ntc_thermistor: Use the manufacturer name properly

[Mark Rutland]

On Tue, Jun 24, 2014 at 01:19:14PM +0100, Naveen Krishna Chatradhi wrote:
> Murata Manufacturing Co., Ltd is the vendor for
> NTC (Negative Temperature coefficient) based Thermistors.
> But, the driver extensively uses "NTC" as the vendor name.
> 
> This patch corrects the vendor name also updates the
> compatibility strings according to the vendor-prefix.txt
> 
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Cc: Guenter Roeck <linux-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
> ---
> This changes is needed for the following reasons
> 
> 1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
>    Thus, giving an error when checked with scripts/checkpatch.pl
> 2. Murata Manufacturing Co., Ltd. Is the vendor for the
>    NTC (Negative Temperature Coefficient) based thermistors.
>    Hence, "murata" is the right vendor-prefix, Not "ntc".
> 3. NTC is a technology used, But the prefix "ntc" is wrongly
>    and heavily used in the driver and the documentation.
> 
>  .../devicetree/bindings/arm/samsung/exynos-adc.txt |    2 +-
>  .../devicetree/bindings/hwmon/ntc_thermistor.txt   |   12 ++++++------
>  Documentation/hwmon/ntc_thermistor                 |    8 ++++----
>  drivers/hwmon/Kconfig                              |    5 +++--
>  drivers/hwmon/ntc_thermistor.c                     |   12 ++++++------
>  5 files changed, 20 insertions(+), 19 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> index 5d49f2b..832fe8c 100644
> --- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
> @@ -48,7 +48,7 @@ adc@12D10000 {
>  
>  	/* NTC thermistor is a hwmon device */
>  	ncp15wb473@0 {
> -		compatible = "ntc,ncp15wb473";
> +		compatible = "murata,ncp15wb473";
>  		pullup-uv = <1800000>;
>  		pullup-ohm = <47000>;
>  		pulldown-ohm = <0>;
> diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> index c6f6667..4e9f344 100644
> --- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> +++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
> @@ -3,11 +3,11 @@ NTC Thermistor hwmon sensors
>  
>  Requires node properties:
>  - "compatible" value : one of
> -	"ntc,ncp15wb473"
> -	"ntc,ncp18wb473"
> -	"ntc,ncp21wb473"
> -	"ntc,ncp03wb473"
> -	"ntc,ncp15wl333"
> +	"murata,ncp15wb473"
> +	"murata,ncp18wb473"
> +	"murata,ncp21wb473"
> +	"murata,ncp03wb473"
> +	"murata,ncp15wl333"

So we're outright changing these rather than deprecating the existing
forms?

In general we've pushed back on changes like this, and requested that
the old strings are kept in both documentation and code as deprecated
forms.

Can you guarantee that changing this is not going to stop someone's
board worknig properly? I suspect not.

Mark.

>  - "pullup-uv"	Pull up voltage in micro volts
>  - "pullup-ohm"	Pull up resistor value in ohms
>  - "pulldown-ohm" Pull down resistor value in ohms
> @@ -21,7 +21,7 @@ Read more about iio bindings at
>  
>  Example:
>  	ncp15wb473@0 {
> -		compatible = "ntc,ncp15wb473";
> +		compatible = "murata,ncp15wb473";
>  		pullup-uv = <1800000>;
>  		pullup-ohm = <47000>;
>  		pulldown-ohm = <0>;
> diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor
> index 3bfda94..057b770 100644
> --- a/Documentation/hwmon/ntc_thermistor
> +++ b/Documentation/hwmon/ntc_thermistor
> @@ -1,7 +1,7 @@
>  Kernel driver ntc_thermistor
>  =================
>  
> -Supported thermistors:
> +Supported thermistors from Murata:
>  * Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333
>    Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333'
>    Datasheet: Publicly available at Murata
> @@ -15,9 +15,9 @@ Authors:
>  Description
>  -----------
>  
> -The NTC thermistor is a simple thermistor that requires users to provide the
> -resistance and lookup the corresponding compensation table to get the
> -temperature input.
> +The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor
> +that requires users to provide the resistance and lookup the corresponding
> +compensation table to get the temperature input.
>  
>  The NTC driver provides lookup tables with a linear approximation function
>  and four circuit models with an option not to use any of the four models.
> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
> index 08531a1..154851b 100644
> --- a/drivers/hwmon/Kconfig
> +++ b/drivers/hwmon/Kconfig
> @@ -1052,7 +1052,7 @@ config SENSORS_PC87427
>  	  will be called pc87427.
>  
>  config SENSORS_NTC_THERMISTOR
> -	tristate "NTC thermistor support"
> +	tristate "NTC based thermistor support from Murata"
>  	depends on !OF || IIO=n || IIO
>  	help
>  	  This driver supports NTC thermistors sensor reading and its
> @@ -1060,7 +1060,8 @@ config SENSORS_NTC_THERMISTOR
>  	  send notifications about the temperature.
>  
>  	  Currently, this driver supports
> -	  NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333.
> +	  NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333
> +	  from Murata.
>  
>  	  This driver can also be built as a module.  If so, the module
>  	  will be called ntc-thermistor.
> diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
> index e76feb86..6c38fc8 100644
> --- a/drivers/hwmon/ntc_thermistor.c
> +++ b/drivers/hwmon/ntc_thermistor.c
> @@ -163,15 +163,15 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
>  }
>  
>  static const struct of_device_id ntc_match[] = {
> -	{ .compatible = "ntc,ncp15wb473",
> +	{ .compatible = "murata,ncp15wb473",
>  		.data = &ntc_thermistor_id[0] },
> -	{ .compatible = "ntc,ncp18wb473",
> +	{ .compatible = "murata,ncp18wb473",
>  		.data = &ntc_thermistor_id[1] },
> -	{ .compatible = "ntc,ncp21wb473",
> +	{ .compatible = "murata,ncp21wb473",
>  		.data = &ntc_thermistor_id[2] },
> -	{ .compatible = "ntc,ncp03wb473",
> +	{ .compatible = "murata,ncp03wb473",
>  		.data = &ntc_thermistor_id[3] },
> -	{ .compatible = "ntc,ncp15wl333",
> +	{ .compatible = "murata,ncp15wl333",
>  		.data = &ntc_thermistor_id[4] },
>  	{ },
>  };
> @@ -534,7 +534,7 @@ static struct platform_driver ntc_thermistor_driver = {
>  
>  module_platform_driver(ntc_thermistor_driver);
>  
> -MODULE_DESCRIPTION("NTC Thermistor Driver");
> +MODULE_DESCRIPTION("NTC based Thermistor Driver from Murata");
>  MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>");
>  MODULE_LICENSE("GPL");
>  MODULE_ALIAS("platform:ntc-thermistor");
> -- 
> 1.7.9.5
> 
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH 3/4] ARM: DTS: use new compatible string as per the documentation

[Mark Rutland]

On Tue, Jun 24, 2014 at 01:19:15PM +0100, Naveen Krishna Chatradhi wrote:
> As Murata is the Manufactures the NTC thermistors. The vendor
> name in the compatibility is preposed to change to "murata, ncpXXX"
> 
> This patch uses the new compatibility string in exynos4412 based
> Trats2 board.
> 
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> Cc: Chanwoo Choi <cw00.choi-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
> ---
> 1. Updates the thermistor node in Exynos4412 based Trats2 dts
>    using the new DT bindings for NTC thermistors updated with vendor-prefix
> 
>  arch/arm/boot/dts/exynos4412-trats2.dts |    4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
> index 11967f4..d35755a 100644
> --- a/arch/arm/boot/dts/exynos4412-trats2.dts
> +++ b/arch/arm/boot/dts/exynos4412-trats2.dts
> @@ -771,7 +771,7 @@
>  	};
>  
>  	thermistor-ap@0 {
> -		compatible = "ntc,ncp15wb473";
> +		compatible = "murata,ncp15wb473";

So the previous patch woul have broken this board?

Mark.

>  		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
>  		pullup-ohm = <100000>;	 /* 100K */
>  		pulldown-ohm = <100000>; /* 100K */
> @@ -779,7 +779,7 @@
>  	};
>  
>  	thermistor-battery@1 {
> -		compatible = "ntc,ncp15wb473";
> +		compatible = "murata,ncp15wb473";
>  		pullup-uv = <1800000>;	 /* VCC_1.8V_AP */
>  		pullup-ohm = <100000>;	 /* 100K */
>  		pulldown-ohm = <100000>; /* 100K */
> -- 
> 1.7.9.5
> 
> --
> To unsubscribe from this list: send the line "unsubscribe devicetree" in
> the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 

Re: [PATCH 1/4] devicetree: bindings: Document murata vendor prefix

[Naveen Krishna Ch]

Hello Mark,

On 24 June 2014 19:00, Mark Rutland <mark.rutland@arm.com> wrote:
> On Tue, Jun 24, 2014 at 01:19:13PM +0100, Naveen Krishna Chatradhi wrote:
>> Add Murata Manufacturing Co., Ltd. to the list of device tree
>> vendor prefixes.
>>
>> Murata manufactures NTC (Negative Temperature Coefficient) based
>> Thermistors for small scale applications like Mobiles and PDAs.
>>
>> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
>> Cc: Guenter Roeck <linux@roeck-us.net>
>> ---
>> This changes is needed for the following reasons
>>
>> 1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
>>    Thus, giving an error when checked with scripts/checkpatch.pl
>> 2. Murata Manufacturing Co., Ltd. Is the vendor for the
>>    NTC (Negative Temperature Coefficient) based thermistors.
>>    Hence, "murata" is the right vendor-prefix, Not "ntc".
>> 3. NTC is a technology used, But the prefix "ntc" is wrongly
>>    and heavily used in the driver and the documentation.
>>
>>  .../devicetree/bindings/vendor-prefixes.txt        |    1 +
>>  1 file changed, 1 insertion(+)
>>
>> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> index 4d7f375..a39b7d7 100644
>> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
>> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
>> @@ -84,6 +84,7 @@ moxa        Moxa
>>  mpl  MPL AG
>>  mundoreader  Mundo Reader S.L.
>>  mxicy        Macronix International Co., Ltd.
>> +murata       Murata Manufacturing Co., Ltd.
>
> Nit: please keep this list in alphabetical order.

Sure, Will rearrange and re-spin.
>
> Otherwise, this looks fine to me. With the order fixed:
>
> Acked-by: Mark Rutland <mark.rutland@arm.com>

Thanks
>
> Mark.
>
>>  national     National Semiconductor
>>  neonode              Neonode Inc.
>>  netgear      NETGEAR
>> --
>> 1.7.9.5
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe devicetree" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>



-- 
Shine bright,
(: Nav :)

Re: [PATCH 2/4] hwmon: ntc_thermistor: Use the manufacturer name properly

[Naveen Krishna Ch]

Hello Mark,

On 24 June 2014 19:02, Mark Rutland <mark.rutland@arm.com> wrote:
> On Tue, Jun 24, 2014 at 01:19:14PM +0100, Naveen Krishna Chatradhi wrote:
>> Murata Manufacturing Co., Ltd is the vendor for
>> NTC (Negative Temperature coefficient) based Thermistors.
>> But, the driver extensively uses "NTC" as the vendor name.
>>
>> This patch corrects the vendor name also updates the
>> compatibility strings according to the vendor-prefix.txt
>>
>> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
>> Cc: Guenter Roeck <linux@roeck-us.net>
>> ---
>> This changes is needed for the following reasons
>>
>> 1. The vendor prefix "ntc" is not defined in vendor-prefixes.txt
>>    Thus, giving an error when checked with scripts/checkpatch.pl
>> 2. Murata Manufacturing Co., Ltd. Is the vendor for the
>>    NTC (Negative Temperature Coefficient) based thermistors.
>>    Hence, "murata" is the right vendor-prefix, Not "ntc".
>> 3. NTC is a technology used, But the prefix "ntc" is wrongly
>>    and heavily used in the driver and the documentation.
>>
>>  .../devicetree/bindings/arm/samsung/exynos-adc.txt |    2 +-
>>  .../devicetree/bindings/hwmon/ntc_thermistor.txt   |   12 ++++++------
>>  Documentation/hwmon/ntc_thermistor                 |    8 ++++----
>>  drivers/hwmon/Kconfig                              |    5 +++--
>>  drivers/hwmon/ntc_thermistor.c                     |   12 ++++++------
>>  5 files changed, 20 insertions(+), 19 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
>> index 5d49f2b..832fe8c 100644
>> --- a/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
>> +++ b/Documentation/devicetree/bindings/arm/samsung/exynos-adc.txt
>> @@ -48,7 +48,7 @@ adc@12D10000 {
>>
>>       /* NTC thermistor is a hwmon device */
>>       ncp15wb473@0 {
>> -             compatible = "ntc,ncp15wb473";
>> +             compatible = "murata,ncp15wb473";
>>               pullup-uv = <1800000>;
>>               pullup-ohm = <47000>;
>>               pulldown-ohm = <0>;
>> diff --git a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>> index c6f6667..4e9f344 100644
>> --- a/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>> +++ b/Documentation/devicetree/bindings/hwmon/ntc_thermistor.txt
>> @@ -3,11 +3,11 @@ NTC Thermistor hwmon sensors
>>
>>  Requires node properties:
>>  - "compatible" value : one of
>> -     "ntc,ncp15wb473"
>> -     "ntc,ncp18wb473"
>> -     "ntc,ncp21wb473"
>> -     "ntc,ncp03wb473"
>> -     "ntc,ncp15wl333"
>> +     "murata,ncp15wb473"
>> +     "murata,ncp18wb473"
>> +     "murata,ncp21wb473"
>> +     "murata,ncp03wb473"
>> +     "murata,ncp15wl333"
>
> So we're outright changing these rather than deprecating the existing
> forms?
>
> In general we've pushed back on changes like this, and requested that
> the old strings are kept in both documentation and code as deprecated
> forms.

Should have kept the old bindings as deprecated.

>
> Can you guarantee that changing this is not going to stop someone's
> board worknig properly? I suspect not.

As a result of this change, Exynos4412-Trats2 board is broken.
Will re-spin with the deprecated binding.

>
> Mark.
>
>>  - "pullup-uv"        Pull up voltage in micro volts
>>  - "pullup-ohm"       Pull up resistor value in ohms
>>  - "pulldown-ohm" Pull down resistor value in ohms
>> @@ -21,7 +21,7 @@ Read more about iio bindings at
>>
>>  Example:
>>       ncp15wb473@0 {
>> -             compatible = "ntc,ncp15wb473";
>> +             compatible = "murata,ncp15wb473";
>>               pullup-uv = <1800000>;
>>               pullup-ohm = <47000>;
>>               pulldown-ohm = <0>;
>> diff --git a/Documentation/hwmon/ntc_thermistor b/Documentation/hwmon/ntc_thermistor
>> index 3bfda94..057b770 100644
>> --- a/Documentation/hwmon/ntc_thermistor
>> +++ b/Documentation/hwmon/ntc_thermistor
>> @@ -1,7 +1,7 @@
>>  Kernel driver ntc_thermistor
>>  =================
>>
>> -Supported thermistors:
>> +Supported thermistors from Murata:
>>  * Murata NTC Thermistors NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, NCP15WL333
>>    Prefixes: 'ncp15wb473', 'ncp18wb473', 'ncp21wb473', 'ncp03wb473', 'ncp15wl333'
>>    Datasheet: Publicly available at Murata
>> @@ -15,9 +15,9 @@ Authors:
>>  Description
>>  -----------
>>
>> -The NTC thermistor is a simple thermistor that requires users to provide the
>> -resistance and lookup the corresponding compensation table to get the
>> -temperature input.
>> +The NTC (Negative Temperature Coefficient) thermistor is a simple thermistor
>> +that requires users to provide the resistance and lookup the corresponding
>> +compensation table to get the temperature input.
>>
>>  The NTC driver provides lookup tables with a linear approximation function
>>  and four circuit models with an option not to use any of the four models.
>> diff --git a/drivers/hwmon/Kconfig b/drivers/hwmon/Kconfig
>> index 08531a1..154851b 100644
>> --- a/drivers/hwmon/Kconfig
>> +++ b/drivers/hwmon/Kconfig
>> @@ -1052,7 +1052,7 @@ config SENSORS_PC87427
>>         will be called pc87427.
>>
>>  config SENSORS_NTC_THERMISTOR
>> -     tristate "NTC thermistor support"
>> +     tristate "NTC based thermistor support from Murata"
>>       depends on !OF || IIO=n || IIO
>>       help
>>         This driver supports NTC thermistors sensor reading and its
>> @@ -1060,7 +1060,8 @@ config SENSORS_NTC_THERMISTOR
>>         send notifications about the temperature.
>>
>>         Currently, this driver supports
>> -       NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333.
>> +       NCP15WB473, NCP18WB473, NCP21WB473, NCP03WB473, and NCP15WL333
>> +       from Murata.
>>
>>         This driver can also be built as a module.  If so, the module
>>         will be called ntc-thermistor.
>> diff --git a/drivers/hwmon/ntc_thermistor.c b/drivers/hwmon/ntc_thermistor.c
>> index e76feb86..6c38fc8 100644
>> --- a/drivers/hwmon/ntc_thermistor.c
>> +++ b/drivers/hwmon/ntc_thermistor.c
>> @@ -163,15 +163,15 @@ static int ntc_adc_iio_read(struct ntc_thermistor_platform_data *pdata)
>>  }
>>
>>  static const struct of_device_id ntc_match[] = {
>> -     { .compatible = "ntc,ncp15wb473",
>> +     { .compatible = "murata,ncp15wb473",
>>               .data = &ntc_thermistor_id[0] },
>> -     { .compatible = "ntc,ncp18wb473",
>> +     { .compatible = "murata,ncp18wb473",
>>               .data = &ntc_thermistor_id[1] },
>> -     { .compatible = "ntc,ncp21wb473",
>> +     { .compatible = "murata,ncp21wb473",
>>               .data = &ntc_thermistor_id[2] },
>> -     { .compatible = "ntc,ncp03wb473",
>> +     { .compatible = "murata,ncp03wb473",
>>               .data = &ntc_thermistor_id[3] },
>> -     { .compatible = "ntc,ncp15wl333",
>> +     { .compatible = "murata,ncp15wl333",
>>               .data = &ntc_thermistor_id[4] },
>>       { },
>>  };
>> @@ -534,7 +534,7 @@ static struct platform_driver ntc_thermistor_driver = {
>>
>>  module_platform_driver(ntc_thermistor_driver);
>>
>> -MODULE_DESCRIPTION("NTC Thermistor Driver");
>> +MODULE_DESCRIPTION("NTC based Thermistor Driver from Murata");
>>  MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
>>  MODULE_LICENSE("GPL");
>>  MODULE_ALIAS("platform:ntc-thermistor");
>> --
>> 1.7.9.5
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe devicetree" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>



-- 
Shine bright,
(: Nav :)

Re: [PATCH 3/4] ARM: DTS: use new compatible string as per the documentation

[Naveen Krishna Ch]

Hello Mark,

On 24 June 2014 19:03, Mark Rutland <mark.rutland@arm.com> wrote:
> On Tue, Jun 24, 2014 at 01:19:15PM +0100, Naveen Krishna Chatradhi wrote:
>> As Murata is the Manufactures the NTC thermistors. The vendor
>> name in the compatibility is preposed to change to "murata, ncpXXX"
>>
>> This patch uses the new compatibility string in exynos4412 based
>> Trats2 board.
>>
>> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
>> Cc: Chanwoo Choi <cw00.choi@samsung.com>
>> ---
>> 1. Updates the thermistor node in Exynos4412 based Trats2 dts
>>    using the new DT bindings for NTC thermistors updated with vendor-prefix
>>
>>  arch/arm/boot/dts/exynos4412-trats2.dts |    4 ++--
>>  1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/exynos4412-trats2.dts b/arch/arm/boot/dts/exynos4412-trats2.dts
>> index 11967f4..d35755a 100644
>> --- a/arch/arm/boot/dts/exynos4412-trats2.dts
>> +++ b/arch/arm/boot/dts/exynos4412-trats2.dts
>> @@ -771,7 +771,7 @@
>>       };
>>
>>       thermistor-ap@0 {
>> -             compatible = "ntc,ncp15wb473";
>> +             compatible = "murata,ncp15wb473";
>
> So the previous patch woul have broken this board?

Will keep the deprecated binding. But, still change here.
As, this is the only board currently using the NTC thermistors.

>
> Mark.
>
>>               pullup-uv = <1800000>;   /* VCC_1.8V_AP */
>>               pullup-ohm = <100000>;   /* 100K */
>>               pulldown-ohm = <100000>; /* 100K */
>> @@ -779,7 +779,7 @@
>>       };
>>
>>       thermistor-battery@1 {
>> -             compatible = "ntc,ncp15wb473";
>> +             compatible = "murata,ncp15wb473";
>>               pullup-uv = <1800000>;   /* VCC_1.8V_AP */
>>               pullup-ohm = <100000>;   /* 100K */
>>               pulldown-ohm = <100000>; /* 100K */
>> --
>> 1.7.9.5
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe devicetree" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>>



-- 
Shine bright,
(: Nav :)

Re: [PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC

[Doug Anderson]

Naveen,

On Tue, Jun 24, 2014 at 5:19 AM, Naveen Krishna Chatradhi
<ch.naveen@samsung.com> wrote:
> Exynos5420 based Peach PIT and Exynos5800 based PI boards have
> 4 NTC thermistors to measure temperatures at various points on the
> board.
>
> IIO based ADC becomes the parent and NTC thermistors are the childs,
> via the HWMON interface.
>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
> Cc: Doug Anderson <dianders@chromium.org>
> ---
> This patch needs
> 1. MAX77802 PMIC device tree nodes (for ldo9)
>    https://www.mail-archive.com/devicetree@vger.kernel.org/msg31430.html
> 2. Uses the DT documentation for NTC thermistors updated with vendor-prefix
>
>  arch/arm/boot/dts/exynos5420-peach-pit.dts |   32 ++++++++++++++++++++++++++++
>  1 file changed, 32 insertions(+)

* You forgot: status="okay" for the ADC.  One might question how this
patch was tested.

* Please also include this change for pi.

* We just got through the painful process of sorting this .dts file.
Please sort "&adc" alphabetically.  Kukjin: please confirm that you
will keep an eye on patches and make sure that they are sorted OK.


Other than those problems this seems to work fine to me.

-Doug

Re: [PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC

[Naveen Krishna Ch]

Doug,

On 25 June 2014 03:24, Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> wrote:
> Naveen,
>
> On Tue, Jun 24, 2014 at 5:19 AM, Naveen Krishna Chatradhi
> <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> wrote:
>> Exynos5420 based Peach PIT and Exynos5800 based PI boards have
>> 4 NTC thermistors to measure temperatures at various points on the
>> board.
>>
>> IIO based ADC becomes the parent and NTC thermistors are the childs,
>> via the HWMON interface.
>>
>> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
>> Cc: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>> ---
>> This patch needs
>> 1. MAX77802 PMIC device tree nodes (for ldo9)
>>    https://www.mail-archive.com/devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org/msg31430.html
>> 2. Uses the DT documentation for NTC thermistors updated with vendor-prefix
>>
>>  arch/arm/boot/dts/exynos5420-peach-pit.dts |   32 ++++++++++++++++++++++++++++
>>  1 file changed, 32 insertions(+)
>
> * You forgot: status="okay" for the ADC.  One might question how this
> patch was tested.

Will correct it.

>
> * Please also include this change for pi.

MAX77802 device node was not added for Peach_PI (exynos5800-peach-pi.dts).
I guess, Javier have a plan to send.

I will edit the commit message to remove Peach_PI for now.

Also, we have few similar nodes on Peach PI  and Peach PIT.
Any plans or discussion on merging the common nodes ?

>
> * We just got through the painful process of sorting this .dts file.
> Please sort "&adc" alphabetically.  Kukjin: please confirm that you
> will keep an eye on patches and make sure that they are sorted OK.
>
>
> Other than those problems this seems to work fine to me.
>
> -Doug

Thanks for the Review.


-- 
Shine bright,
(: Nav :)

Re: [PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC

[Javier Martinez Canillas]

Hello Naveen,

On Wed, Jun 25, 2014 at 7:04 AM, Naveen Krishna Ch
<naveenkrishna.ch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Doug,
>
> On 25 June 2014 03:24, Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org> wrote:
>> Naveen,
>>
>> On Tue, Jun 24, 2014 at 5:19 AM, Naveen Krishna Chatradhi
>> <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org> wrote:
>>> Exynos5420 based Peach PIT and Exynos5800 based PI boards have
>>> 4 NTC thermistors to measure temperatures at various points on the
>>> board.
>>>
>>> IIO based ADC becomes the parent and NTC thermistors are the childs,
>>> via the HWMON interface.
>>>
>>> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
>>> Cc: Doug Anderson <dianders-F7+t8E8rja9g9hUCZPvPmw@public.gmane.org>
>>> ---
>>> This patch needs
>>> 1. MAX77802 PMIC device tree nodes (for ldo9)
>>>    https://www.mail-archive.com/devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org/msg31430.html
>>> 2. Uses the DT documentation for NTC thermistors updated with vendor-prefix
>>>
>>>  arch/arm/boot/dts/exynos5420-peach-pit.dts |   32 ++++++++++++++++++++++++++++
>>>  1 file changed, 32 insertions(+)
>>
>> * You forgot: status="okay" for the ADC.  One might question how this
>> patch was tested.
>
> Will correct it.
>
>>
>> * Please also include this change for pi.
>
> MAX77802 device node was not added for Peach_PI (exynos5800-peach-pi.dts).
> I guess, Javier have a plan to send.
>

That's correct. I didn't include the changes to Peach Pi since I only
have a Pit to test but I'll add it on the next version so you can have
that patch as a dependency and use the MAX77802 LD9 regulator.

> I will edit the commit message to remove Peach_PI for now.
>
> Also, we have few similar nodes on Peach PI  and Peach PIT.
> Any plans or discussion on merging the common nodes ?
>
>>
>> * We just got through the painful process of sorting this .dts file.
>> Please sort "&adc" alphabetically.  Kukjin: please confirm that you
>> will keep an eye on patches and make sure that they are sorted OK.
>>
>>
>> Other than those problems this seems to work fine to me.
>>
>> -Doug
>
> Thanks for the Review.
>
>
> --
> Shine bright,
> (: Nav :)

Best regards,
Javier

Re: [PATCH 4/4] ARM: DTS: Add NTC thermistor nodes as child nodes to ADC

[Doug Anderson]

Naveen,

On Tue, Jun 24, 2014 at 10:04 PM, Naveen Krishna Ch
<naveenkrishna.ch-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> wrote:
> Also, we have few similar nodes on Peach PI  and Peach PIT.
> Any plans or discussion on merging the common nodes ?

There was some discussion about this in another thread with Javier.
We were thinking of doing more "config fragments" like I did for the
keyboard.  See <https://lkml.org/lkml/2014/6/24/337> for context.

If someone wants to try to break some config fragments out feel free
to send up patches.  Until that is done let's at least keep pit and pi
as close to the same as possible (try to add features to both and try
to make sure that "diff" between the two looks good).

-Doug