[PATCH v10 0/2] mfd: axp20x: Add DT binding documentation

[PATCH v10 0/2] mfd: axp20x: Add DT binding documentation

[Chen-Yu Tsai]

Hi everyone,

This is v10 of the axp20x series. v10 reverts back to the DT bindings
from v8. This is the binding currently supported by the kernel drivers
since 3.18. Mark Brown raised concern on the needless changes to
active regulator bindings in v9.

Maxime, I dropped your Acked-by because of all the changes I've made.
Please have a look again.

Mark (Brown), please take a look at the regulator bits in the second
patch. If it looks good, could you give your Acked-by?

I hope we can get this series merged so we can move on to adding
AXP221 support.


Regards,
ChenYu


Changes since v9:

    - Revert to bindings in v8
    - Dropped new patches in v9
    - x-powers,dcdc-workmode default changed to "current hardware setting",
      matching the regulator driver.
    - Reorganized regulator related properties into separate section.
      This should make it easier to read and also update for newer PMICs.
    - Regulator nodes should only be listed if they are to be managed by
      the OS.


Carlo Caione (2):
  mfd: AXP20x: Add bindings documentation
  dt-bindings: add vendor-prefix for X-Powers

 Documentation/devicetree/bindings/mfd/axp20x.txt   | 96 ++++++++++++++++++++++
 .../devicetree/bindings/vendor-prefixes.txt        |  1 +
 2 files changed, 97 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/axp20x.txt

-- 
2.1.4

[PATCH v10 1/2] mfd: AXP20x: Add bindings documentation

[Chen-Yu Tsai]

From: Carlo Caione <carlo@caione.org>

Bindings documentation for the AXP20x driver. In this file also
sub-nodes are documented.

Signed-off-by: Carlo Caione <carlo@caione.org>
[wens@csie.org: clarify interrupt source for the axp PMIC]
[wens@csie.org: explain dcdc-workmode in detail and trim lines to 80 chars]
[wens@csie.org: make regulator supplies optional if using unregulated input]
[wens@csie.org: use cubieboard2 regulator nodes as example]
[wens@csie.org: x-powers,dcdc-workmode default changed to 'current hardware
                setting']
[wens@csie.org: reorganized regulator related properties into separate
                section.]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
---
 Documentation/devicetree/bindings/mfd/axp20x.txt | 96 ++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/axp20x.txt

diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
new file mode 100644
index 000000000000..98685f291a72
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
@@ -0,0 +1,96 @@
+AXP202/AXP209 device tree bindings
+
+The axp20x family current members :
+axp202 (X-Powers)
+axp209 (X-Powers)
+
+Required properties:
+- compatible: "x-powers,axp202" or "x-powers,axp209"
+- reg: The I2C slave address for the AXP chip
+- interrupt-parent: The parent interrupt controller
+- interrupts: SoC NMI / GPIO interrupt connected to the PMIC's IRQ pin
+- interrupt-controller: axp20x has its own internal IRQs
+- #interrupt-cells: Should be set to 1
+
+Optional properties:
+- x-powers,dcdc-freq: defines the work frequency of DC-DC in KHz
+		      (range: 750-1875). Default: 1.5MHz
+- <input>-supply: a phandle to the regulator supply node. May be omitted if
+		  inputs are unregulated, such as using the IPSOUT output
+		  from the PMIC.
+
+- regulators: A node that houses a sub-node for each regulator. Regulators
+	      not used but preferred to be managed by the OS should be
+	      listed as well.
+	      See Documentation/devicetree/bindings/regulator/regulator.txt
+	      for more information on standard regulator bindings.
+
+Optional properties for DCDC regulators:
+- x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO (PWM/PFM) mode
+			  Default: Current hardware setting
+			  The DCDC regulators work in a mixed PWM/PFM mode,
+			  using PFM under light loads and switching to PWM
+			  for heavier loads. Forcing PWM mode trades efficiency
+			  under light loads for lower output noise. This
+			  probably makes sense for HiFi audio related
+			  applications that aren't battery constrained.
+
+
+AXP202/AXP209 regulators, type, and corresponding input supply names:
+
+Regulator	  Type		  Supply Name		  Notes
+---------	  ----		  -----------		  -----
+DCDC2		: DC-DC buck	: vin2-supply
+DCDC3		: DC-DC	buck	: vin3-supply
+LDO1		: LDO		: acin-supply		: always on
+LDO2		: LDO		: ldo24in-supply	: shared supply
+LDO3		: LDO		: ldo3in-supply
+LDO4		: LDO		: ldo24in-supply	: shared supply
+LDO5		: LDO		: ldo5in-supply
+
+Example:
+
+axp209: pmic@34 {
+	compatible = "x-powers,axp209";
+	reg = <0x34>;
+	interrupt-parent = <&nmi_intc>;
+	interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+	interrupt-controller;
+	#interrupt-cells = <1>;
+
+	regulators {
+		x-powers,dcdc-freq = <1500>;
+
+		vdd_cpu: dcdc2 {
+			regulator-always-on;
+			regulator-min-microvolt = <1000000>;
+			regulator-max-microvolt = <1450000>;
+			regulator-name = "vdd-cpu";
+		};
+
+		vdd_int_dll: dcdc3 {
+			regulator-always-on;
+			regulator-min-microvolt = <1000000>;
+			regulator-max-microvolt = <1400000>;
+			regulator-name = "vdd-int-dll";
+		};
+
+		vdd_rtc: ldo1 {
+			regulator-always-on;
+			regulator-min-microvolt = <1200000>;
+			regulator-max-microvolt = <1400000>;
+			regulator-name = "vdd-rtc";
+		};
+
+		avcc: ldo2 {
+			regulator-always-on;
+			regulator-min-microvolt = <2700000>;
+			regulator-max-microvolt = <3300000>;
+			regulator-name = "avcc";
+		};
+
+		ldo3 {
+			/* unused but preferred to be managed by OS */
+		};
+	};
+};
-- 
2.1.4

Re: [PATCH v10 1/2] mfd: AXP20x: Add bindings documentation

[Chen-Yu Tsai]

On Fri, Feb 20, 2015 at 7:19 PM, Chen-Yu Tsai <wens@csie.org> wrote:
> From: Carlo Caione <carlo@caione.org>
>
> Bindings documentation for the AXP20x driver. In this file also
> sub-nodes are documented.
>
> Signed-off-by: Carlo Caione <carlo@caione.org>
> [wens@csie.org: clarify interrupt source for the axp PMIC]
> [wens@csie.org: explain dcdc-workmode in detail and trim lines to 80 chars]
> [wens@csie.org: make regulator supplies optional if using unregulated input]
> [wens@csie.org: use cubieboard2 regulator nodes as example]
> [wens@csie.org: x-powers,dcdc-workmode default changed to 'current hardware
>                 setting']
> [wens@csie.org: reorganized regulator related properties into separate
>                 section.]
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>

Ping?

Re: [PATCH v10 1/2] mfd: AXP20x: Add bindings documentation

[Lee Jones]

On Sat, 07 Mar 2015, Chen-Yu Tsai wrote:

> On Fri, Feb 20, 2015 at 7:19 PM, Chen-Yu Tsai <wens@csie.org> wrote:
> > From: Carlo Caione <carlo@caione.org>
> >
> > Bindings documentation for the AXP20x driver. In this file also
> > sub-nodes are documented.
> >
> > Signed-off-by: Carlo Caione <carlo@caione.org>
> > [wens@csie.org: clarify interrupt source for the axp PMIC]
> > [wens@csie.org: explain dcdc-workmode in detail and trim lines to 80 chars]
> > [wens@csie.org: make regulator supplies optional if using unregulated input]
> > [wens@csie.org: use cubieboard2 regulator nodes as example]
> > [wens@csie.org: x-powers,dcdc-workmode default changed to 'current hardware
> >                 setting']
> > [wens@csie.org: reorganized regulator related properties into separate
> >                 section.]
> > Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> 
> Ping?

Don't do that.  It won't speed up the review.

If you think your set has been fogotten about (this one has not)
resend with s/PATCH/RESEND/ in the subject line.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

Re: [PATCH v10 1/2] mfd: AXP20x: Add bindings documentation

[Maxime Ripard]

[-- Attachment #1: Type: text/plain, Size: 1223 bytes --]

On Fri, Feb 20, 2015 at 07:19:27PM +0800, Chen-Yu Tsai wrote:
> From: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
> 
> Bindings documentation for the AXP20x driver. In this file also
> sub-nodes are documented.
> 
> Signed-off-by: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
> [wens-jdAy2FN1RRM@public.gmane.org: clarify interrupt source for the axp PMIC]
> [wens-jdAy2FN1RRM@public.gmane.org: explain dcdc-workmode in detail and trim lines to 80 chars]
> [wens-jdAy2FN1RRM@public.gmane.org: make regulator supplies optional if using unregulated input]
> [wens-jdAy2FN1RRM@public.gmane.org: use cubieboard2 regulator nodes as example]
> [wens-jdAy2FN1RRM@public.gmane.org: x-powers,dcdc-workmode default changed to 'current hardware
>                 setting']
> [wens-jdAy2FN1RRM@public.gmane.org: reorganized regulator related properties into separate
>                 section.]
> Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>

Acked-by: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>

Thanks!
Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com

[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 819 bytes --]

Re: [PATCH v10 1/2] mfd: AXP20x: Add bindings documentation

[Lee Jones]

On Fri, 20 Feb 2015, Chen-Yu Tsai wrote:

> From: Carlo Caione <carlo@caione.org>
> 
> Bindings documentation for the AXP20x driver. In this file also
> sub-nodes are documented.
> 
> Signed-off-by: Carlo Caione <carlo@caione.org>
> [wens@csie.org: clarify interrupt source for the axp PMIC]
> [wens@csie.org: explain dcdc-workmode in detail and trim lines to 80 chars]
> [wens@csie.org: make regulator supplies optional if using unregulated input]
> [wens@csie.org: use cubieboard2 regulator nodes as example]
> [wens@csie.org: x-powers,dcdc-workmode default changed to 'current hardware
>                 setting']
> [wens@csie.org: reorganized regulator related properties into separate
>                 section.]
> Signed-off-by: Chen-Yu Tsai <wens@csie.org>
> ---
>  Documentation/devicetree/bindings/mfd/axp20x.txt | 96 ++++++++++++++++++++++++
>  1 file changed, 96 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/axp20x.txt

Applied, thanks.

> diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
> new file mode 100644
> index 000000000000..98685f291a72
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
> @@ -0,0 +1,96 @@
> +AXP202/AXP209 device tree bindings
> +
> +The axp20x family current members :
> +axp202 (X-Powers)
> +axp209 (X-Powers)
> +
> +Required properties:
> +- compatible: "x-powers,axp202" or "x-powers,axp209"
> +- reg: The I2C slave address for the AXP chip
> +- interrupt-parent: The parent interrupt controller
> +- interrupts: SoC NMI / GPIO interrupt connected to the PMIC's IRQ pin
> +- interrupt-controller: axp20x has its own internal IRQs
> +- #interrupt-cells: Should be set to 1
> +
> +Optional properties:
> +- x-powers,dcdc-freq: defines the work frequency of DC-DC in KHz
> +		      (range: 750-1875). Default: 1.5MHz
> +- <input>-supply: a phandle to the regulator supply node. May be omitted if
> +		  inputs are unregulated, such as using the IPSOUT output
> +		  from the PMIC.
> +
> +- regulators: A node that houses a sub-node for each regulator. Regulators
> +	      not used but preferred to be managed by the OS should be
> +	      listed as well.
> +	      See Documentation/devicetree/bindings/regulator/regulator.txt
> +	      for more information on standard regulator bindings.
> +
> +Optional properties for DCDC regulators:
> +- x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO (PWM/PFM) mode
> +			  Default: Current hardware setting
> +			  The DCDC regulators work in a mixed PWM/PFM mode,
> +			  using PFM under light loads and switching to PWM
> +			  for heavier loads. Forcing PWM mode trades efficiency
> +			  under light loads for lower output noise. This
> +			  probably makes sense for HiFi audio related
> +			  applications that aren't battery constrained.
> +
> +
> +AXP202/AXP209 regulators, type, and corresponding input supply names:
> +
> +Regulator	  Type		  Supply Name		  Notes
> +---------	  ----		  -----------		  -----
> +DCDC2		: DC-DC buck	: vin2-supply
> +DCDC3		: DC-DC	buck	: vin3-supply
> +LDO1		: LDO		: acin-supply		: always on
> +LDO2		: LDO		: ldo24in-supply	: shared supply
> +LDO3		: LDO		: ldo3in-supply
> +LDO4		: LDO		: ldo24in-supply	: shared supply
> +LDO5		: LDO		: ldo5in-supply
> +
> +Example:
> +
> +axp209: pmic@34 {
> +	compatible = "x-powers,axp209";
> +	reg = <0x34>;
> +	interrupt-parent = <&nmi_intc>;
> +	interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> +	interrupt-controller;
> +	#interrupt-cells = <1>;
> +
> +	regulators {
> +		x-powers,dcdc-freq = <1500>;
> +
> +		vdd_cpu: dcdc2 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1000000>;
> +			regulator-max-microvolt = <1450000>;
> +			regulator-name = "vdd-cpu";
> +		};
> +
> +		vdd_int_dll: dcdc3 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1000000>;
> +			regulator-max-microvolt = <1400000>;
> +			regulator-name = "vdd-int-dll";
> +		};
> +
> +		vdd_rtc: ldo1 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <1200000>;
> +			regulator-max-microvolt = <1400000>;
> +			regulator-name = "vdd-rtc";
> +		};
> +
> +		avcc: ldo2 {
> +			regulator-always-on;
> +			regulator-min-microvolt = <2700000>;
> +			regulator-max-microvolt = <3300000>;
> +			regulator-name = "avcc";
> +		};
> +
> +		ldo3 {
> +			/* unused but preferred to be managed by OS */
> +		};
> +	};
> +};

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog

[PATCH v10 2/2] dt-bindings: add vendor-prefix for X-Powers

[Chen-Yu Tsai]

From: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>

Signed-off-by: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
Acked-by: Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
---
 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 96a17541391e..04d63ce07364 100644
--- a/Documentation/devicetree/bindings/vendor-prefixes.txt
+++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
@@ -175,6 +175,7 @@ voipac	Voipac Technologies s.r.o.
 winbond Winbond Electronics corp.
 wlf	Wolfson Microelectronics
 wm	Wondermedia Technologies, Inc.
+x-powers	X-Powers
 xes	Extreme Engineering Solutions (X-ES)
 xillybus	Xillybus Ltd.
 xlnx	Xilinx
-- 
2.1.4

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Re: [PATCH v10 2/2] dt-bindings: add vendor-prefix for X-Powers

[Lee Jones]

On Fri, 20 Feb 2015, Chen-Yu Tsai wrote:

> From: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
> 
> Signed-off-by: Carlo Caione <carlo-KA+7E9HrN00dnm+yROfE0A@public.gmane.org>
> Signed-off-by: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
> Acked-by: Lee Jones <lee.jones-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>
> ---
>  Documentation/devicetree/bindings/vendor-prefixes.txt | 1 +
>  1 file changed, 1 insertion(+)

Applied, thanks.

> diff --git a/Documentation/devicetree/bindings/vendor-prefixes.txt b/Documentation/devicetree/bindings/vendor-prefixes.txt
> index 96a17541391e..04d63ce07364 100644
> --- a/Documentation/devicetree/bindings/vendor-prefixes.txt
> +++ b/Documentation/devicetree/bindings/vendor-prefixes.txt
> @@ -175,6 +175,7 @@ voipac	Voipac Technologies s.r.o.
>  winbond Winbond Electronics corp.
>  wlf	Wolfson Microelectronics
>  wm	Wondermedia Technologies, Inc.
> +x-powers	X-Powers
>  xes	Extreme Engineering Solutions (X-ES)
>  xillybus	Xillybus Ltd.
>  xlnx	Xilinx

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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