[PATCH 1/2] ARM: dts: imx7-tqma7: correctly specify PMIC voltage constraints

[PATCH 1/2] ARM: dts: imx7-tqma7: correctly specify PMIC voltage constraints

[Nora Schiffer]

regulator-(min|max)-microvolt refer to the supported voltages according
to board design, not the possible range of the regulators themselves.
Update the configuration for the TQMa7x's PMIC and also add a comment
regarding the PMIC's VCC_SD switching feature.

Fixes: a80a1af6ec8a ("ARM: dts: tq imx7 common board support")
Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
---
 arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 40 +++++++++++++----------
 1 file changed, 23 insertions(+), 17 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
index e1f740edfb763..7f49c80fef4c6 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
@@ -46,8 +46,8 @@ pfuze3000: pmic@8 {
 
 		regulators {
 			sw1a_reg: sw1a {
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <3300000>;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1225000>;
 				regulator-boot-on;
 				regulator-always-on;
 				regulator-ramp-delay = <6250>;
@@ -55,34 +55,33 @@ sw1a_reg: sw1a {
 
 			/* use sw1c_reg to align with pfuze100/pfuze200 */
 			sw1c_reg: sw1b {
-				regulator-min-microvolt = <700000>;
-				regulator-max-microvolt = <1475000>;
+				regulator-min-microvolt = <1000000>;
+				regulator-max-microvolt = <1000000>;
 				regulator-boot-on;
 				regulator-always-on;
 				regulator-ramp-delay = <6250>;
 			};
 
 			sw2_reg: sw2 {
-				regulator-min-microvolt = <1500000>;
-				regulator-max-microvolt = <1850000>;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
 			sw3a_reg: sw3 {
-				regulator-min-microvolt = <900000>;
-				regulator-max-microvolt = <1650000>;
+				regulator-min-microvolt = <1350000>;
+				regulator-max-microvolt = <1350000>;
 				regulator-boot-on;
 				regulator-always-on;
 			};
 
 			swbst_reg: swbst {
-				regulator-min-microvolt = <5000000>;
-				regulator-max-microvolt = <5150000>;
+				/* Not connected and left unconfigured */
 			};
 
 			snvs_reg: vsnvs {
-				regulator-min-microvolt = <1000000>;
+				regulator-min-microvolt = <3000000>;
 				regulator-max-microvolt = <3000000>;
 				regulator-boot-on;
 				regulator-always-on;
@@ -95,18 +94,25 @@ vref_reg: vrefddr {
 
 			vgen1_reg: vldo1 {
 				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <3300000>;
+				regulator-max-microvolt = <1800000>;
 				regulator-always-on;
 			};
 
 			vgen2_reg: vldo2 {
-				regulator-min-microvolt = <800000>;
-				regulator-max-microvolt = <1550000>;
+				regulator-min-microvolt = <1500000>;
+				regulator-max-microvolt = <1500000>;
 				regulator-always-on;
 			};
 
 			vgen3_reg: vccsd {
-				regulator-min-microvolt = <2850000>;
+				/*
+				 * Specified values refer to 3.3V operation; voltage for 1.8V
+				 * operation is derived from this.
+				 *
+				 * The base board should usually mux GPIO1_IO08 to SD1_VSELECT for
+				 * automatic switching of SD card IO voltage.
+				 */
+				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-always-on;
 			};
@@ -118,13 +124,13 @@ vgen4_reg: v33 {
 			};
 
 			vgen5_reg: vldo3 {
-				regulator-min-microvolt = <1800000>;
+				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-always-on;
 			};
 
 			vgen6_reg: vldo4 {
-				regulator-min-microvolt = <1800000>;
+				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-always-on;
 			};
-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
https://www.tq-group.com/

[PATCH 2/2] ARM: dts: imx7-tqma7: sort I2C device nodes by address

[Nora Schiffer]

Fix order of the nodes to follow convention.

Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
---
 arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
index 7f49c80fef4c6..353af6b320cb6 100644
--- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
+++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
@@ -137,6 +137,12 @@ vgen6_reg: vldo4 {
 		};
 	};
 
+	/* NXP SE97BTP with temperature sensor + eeprom, TQMa7x 02xx */
+	se97b: temperature-sensor@1e {
+		compatible = "nxp,se97b", "jedec,jc-42.4-temp";
+		reg = <0x1e>;
+	};
+
 	/* LM75A temperature sensor, TQMa7x 01xx */
 	lm75a: temperature-sensor@48 {
 		compatible = "national,lm75a";
@@ -144,12 +150,6 @@ lm75a: temperature-sensor@48 {
 		vs-supply = <&vgen4_reg>;
 	};
 
-	/* NXP SE97BTP with temperature sensor + eeprom, TQMa7x 02xx */
-	se97b: temperature-sensor@1e {
-		compatible = "nxp,se97b", "jedec,jc-42.4-temp";
-		reg = <0x1e>;
-	};
-
 	/* ST M24C64 */
 	m24c64: eeprom@50 {
 		compatible = "atmel,24c64";
-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
https://www.tq-group.com/

Re: [PATCH 1/2] ARM: dts: imx7-tqma7: correctly specify PMIC voltage constraints

[Frank Li]

On Wed, Sep 02, 2026 at 10:05:37AM +0200, Nora Schiffer wrote:
> regulator-(min|max)-microvolt refer to the supported voltages according
> to board design, not the possible range of the regulators themselves.

I think make sense, but any document or mail list can be refer to?

Frank

> Update the configuration for the TQMa7x's PMIC and also add a comment
> regarding the PMIC's VCC_SD switching feature.
>
> Fixes: a80a1af6ec8a ("ARM: dts: tq imx7 common board support")
> Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
> ---
>  arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 40 +++++++++++++----------
>  1 file changed, 23 insertions(+), 17 deletions(-)
>
> diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> index e1f740edfb763..7f49c80fef4c6 100644
> --- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> +++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> @@ -46,8 +46,8 @@ pfuze3000: pmic@8 {
>
>  		regulators {
>  			sw1a_reg: sw1a {
> -				regulator-min-microvolt = <700000>;
> -				regulator-max-microvolt = <3300000>;
> +				regulator-min-microvolt = <1000000>;
> +				regulator-max-microvolt = <1225000>;
>  				regulator-boot-on;
>  				regulator-always-on;
>  				regulator-ramp-delay = <6250>;
> @@ -55,34 +55,33 @@ sw1a_reg: sw1a {
>
>  			/* use sw1c_reg to align with pfuze100/pfuze200 */
>  			sw1c_reg: sw1b {
> -				regulator-min-microvolt = <700000>;
> -				regulator-max-microvolt = <1475000>;
> +				regulator-min-microvolt = <1000000>;
> +				regulator-max-microvolt = <1000000>;
>  				regulator-boot-on;
>  				regulator-always-on;
>  				regulator-ramp-delay = <6250>;
>  			};
>
>  			sw2_reg: sw2 {
> -				regulator-min-microvolt = <1500000>;
> -				regulator-max-microvolt = <1850000>;
> +				regulator-min-microvolt = <1800000>;
> +				regulator-max-microvolt = <1800000>;
>  				regulator-boot-on;
>  				regulator-always-on;
>  			};
>
>  			sw3a_reg: sw3 {
> -				regulator-min-microvolt = <900000>;
> -				regulator-max-microvolt = <1650000>;
> +				regulator-min-microvolt = <1350000>;
> +				regulator-max-microvolt = <1350000>;
>  				regulator-boot-on;
>  				regulator-always-on;
>  			};
>
>  			swbst_reg: swbst {
> -				regulator-min-microvolt = <5000000>;
> -				regulator-max-microvolt = <5150000>;
> +				/* Not connected and left unconfigured */
>  			};
>
>  			snvs_reg: vsnvs {
> -				regulator-min-microvolt = <1000000>;
> +				regulator-min-microvolt = <3000000>;
>  				regulator-max-microvolt = <3000000>;
>  				regulator-boot-on;
>  				regulator-always-on;
> @@ -95,18 +94,25 @@ vref_reg: vrefddr {
>
>  			vgen1_reg: vldo1 {
>  				regulator-min-microvolt = <1800000>;
> -				regulator-max-microvolt = <3300000>;
> +				regulator-max-microvolt = <1800000>;
>  				regulator-always-on;
>  			};
>
>  			vgen2_reg: vldo2 {
> -				regulator-min-microvolt = <800000>;
> -				regulator-max-microvolt = <1550000>;
> +				regulator-min-microvolt = <1500000>;
> +				regulator-max-microvolt = <1500000>;
>  				regulator-always-on;
>  			};
>
>  			vgen3_reg: vccsd {
> -				regulator-min-microvolt = <2850000>;
> +				/*
> +				 * Specified values refer to 3.3V operation; voltage for 1.8V
> +				 * operation is derived from this.
> +				 *
> +				 * The base board should usually mux GPIO1_IO08 to SD1_VSELECT for
> +				 * automatic switching of SD card IO voltage.
> +				 */
> +				regulator-min-microvolt = <3300000>;
>  				regulator-max-microvolt = <3300000>;
>  				regulator-always-on;
>  			};
> @@ -118,13 +124,13 @@ vgen4_reg: v33 {
>  			};
>
>  			vgen5_reg: vldo3 {
> -				regulator-min-microvolt = <1800000>;
> +				regulator-min-microvolt = <3300000>;
>  				regulator-max-microvolt = <3300000>;
>  				regulator-always-on;
>  			};
>
>  			vgen6_reg: vldo4 {
> -				regulator-min-microvolt = <1800000>;
> +				regulator-min-microvolt = <3300000>;
>  				regulator-max-microvolt = <3300000>;
>  				regulator-always-on;
>  			};
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> https://www.tq-group.com/
>
>

Re: [PATCH 1/2] ARM: dts: imx7-tqma7: correctly specify PMIC voltage constraints

[Nora Schiffer]

On Wed, 2026-09-02 at 11:11 -0500, Frank Li wrote:
> On Wed, Sep 02, 2026 at 10:05:37AM +0200, Nora Schiffer wrote:
> > regulator-(min|max)-microvolt refer to the supported voltages according
> > to board design, not the possible range of the regulators themselves.
> 
> I think make sense, but any document or mail list can be refer to?
> 
> Frank

Hi Frank,

I've occasionally seen this being mentioned in reviews like [1] when the
regulator-min/max was used incorrectly. The binding docs [2] say:

  regulator-min-microvolt:
    description: smallest voltage consumers may set

  regulator-max-microvolt:
    description: largest voltage consumers may set

which is not as clear as I would like... Right now I don't have a source that
feels definitive enough to include it in the commit description.

Best,
Nora


[1] https://lore.kernel.org/all/7b23de30-06e3-4f02-a8a5-90791628ceed@gmail.com/
[2]
https://www.kernel.org/doc/Documentation/devicetree/bindings/regulator/regulator.yaml


> 
> > Update the configuration for the TQMa7x's PMIC and also add a comment
> > regarding the PMIC's VCC_SD switching feature.
> > 
> > Fixes: a80a1af6ec8a ("ARM: dts: tq imx7 common board support")
> > Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
> > ---
> >  arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 40 +++++++++++++----------
> >  1 file changed, 23 insertions(+), 17 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > index e1f740edfb763..7f49c80fef4c6 100644
> > --- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > +++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > @@ -46,8 +46,8 @@ pfuze3000: pmic@8 {
> > 
> >  		regulators {
> >  			sw1a_reg: sw1a {
> > -				regulator-min-microvolt = <700000>;
> > -				regulator-max-microvolt = <3300000>;
> > +				regulator-min-microvolt = <1000000>;
> > +				regulator-max-microvolt = <1225000>;
> >  				regulator-boot-on;
> >  				regulator-always-on;
> >  				regulator-ramp-delay = <6250>;
> > @@ -55,34 +55,33 @@ sw1a_reg: sw1a {
> > 
> >  			/* use sw1c_reg to align with pfuze100/pfuze200 */
> >  			sw1c_reg: sw1b {
> > -				regulator-min-microvolt = <700000>;
> > -				regulator-max-microvolt = <1475000>;
> > +				regulator-min-microvolt = <1000000>;
> > +				regulator-max-microvolt = <1000000>;
> >  				regulator-boot-on;
> >  				regulator-always-on;
> >  				regulator-ramp-delay = <6250>;
> >  			};
> > 
> >  			sw2_reg: sw2 {
> > -				regulator-min-microvolt = <1500000>;
> > -				regulator-max-microvolt = <1850000>;
> > +				regulator-min-microvolt = <1800000>;
> > +				regulator-max-microvolt = <1800000>;
> >  				regulator-boot-on;
> >  				regulator-always-on;
> >  			};
> > 
> >  			sw3a_reg: sw3 {
> > -				regulator-min-microvolt = <900000>;
> > -				regulator-max-microvolt = <1650000>;
> > +				regulator-min-microvolt = <1350000>;
> > +				regulator-max-microvolt = <1350000>;
> >  				regulator-boot-on;
> >  				regulator-always-on;
> >  			};
> > 
> >  			swbst_reg: swbst {
> > -				regulator-min-microvolt = <5000000>;
> > -				regulator-max-microvolt = <5150000>;
> > +				/* Not connected and left unconfigured */
> >  			};
> > 
> >  			snvs_reg: vsnvs {
> > -				regulator-min-microvolt = <1000000>;
> > +				regulator-min-microvolt = <3000000>;
> >  				regulator-max-microvolt = <3000000>;
> >  				regulator-boot-on;
> >  				regulator-always-on;
> > @@ -95,18 +94,25 @@ vref_reg: vrefddr {
> > 
> >  			vgen1_reg: vldo1 {
> >  				regulator-min-microvolt = <1800000>;
> > -				regulator-max-microvolt = <3300000>;
> > +				regulator-max-microvolt = <1800000>;
> >  				regulator-always-on;
> >  			};
> > 
> >  			vgen2_reg: vldo2 {
> > -				regulator-min-microvolt = <800000>;
> > -				regulator-max-microvolt = <1550000>;
> > +				regulator-min-microvolt = <1500000>;
> > +				regulator-max-microvolt = <1500000>;
> >  				regulator-always-on;
> >  			};
> > 
> >  			vgen3_reg: vccsd {
> > -				regulator-min-microvolt = <2850000>;
> > +				/*
> > +				 * Specified values refer to 3.3V operation; voltage for 1.8V
> > +				 * operation is derived from this.
> > +				 *
> > +				 * The base board should usually mux GPIO1_IO08 to SD1_VSELECT for
> > +				 * automatic switching of SD card IO voltage.
> > +				 */
> > +				regulator-min-microvolt = <3300000>;
> >  				regulator-max-microvolt = <3300000>;
> >  				regulator-always-on;
> >  			};
> > @@ -118,13 +124,13 @@ vgen4_reg: v33 {
> >  			};
> > 
> >  			vgen5_reg: vldo3 {
> > -				regulator-min-microvolt = <1800000>;
> > +				regulator-min-microvolt = <3300000>;
> >  				regulator-max-microvolt = <3300000>;
> >  				regulator-always-on;
> >  			};
> > 
> >  			vgen6_reg: vldo4 {
> > -				regulator-min-microvolt = <1800000>;
> > +				regulator-min-microvolt = <3300000>;
> >  				regulator-max-microvolt = <3300000>;
> >  				regulator-always-on;
> >  			};
> > --
> > TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> > Amtsgericht München, HRB 105018
> > Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> > https://www.tq-group.com/
> > 
> > 

-- 
TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
Amtsgericht München, HRB 105018
Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
https://www.tq-group.com/

Re: [PATCH 1/2] ARM: dts: imx7-tqma7: correctly specify PMIC voltage constraints

[Frank Li]

On Thu, Sep 03, 2026 at 12:11:36PM +0200, Nora Schiffer wrote:
> On Wed, 2026-09-02 at 11:11 -0500, Frank Li wrote:
> > On Wed, Sep 02, 2026 at 10:05:37AM +0200, Nora Schiffer wrote:
> > > regulator-(min|max)-microvolt refer to the supported voltages according
> > > to board design, not the possible range of the regulators themselves.
> >
> > I think make sense, but any document or mail list can be refer to?
> >
> > Frank
>
> Hi Frank,
>
> I've occasionally seen this being mentioned in reviews like [1] when the
> regulator-min/max was used incorrectly. The binding docs [2] say:
>
>   regulator-min-microvolt:
>     description: smallest voltage consumers may set
>
>   regulator-max-microvolt:
>     description: largest voltage consumers may set

I suggest create patch to make it clearer, and check what said by dt team
and Mark.  If they agree your change, we can refer it in future.

Frank

>
> which is not as clear as I would like... Right now I don't have a source that
> feels definitive enough to include it in the commit description.
>
> Best,
> Nora
>
>
> [1] https://lore.kernel.org/all/7b23de30-06e3-4f02-a8a5-90791628ceed@gmail.com/
> [2]
> https://www.kernel.org/doc/Documentation/devicetree/bindings/regulator/regulator.yaml
>
>
> >
> > > Update the configuration for the TQMa7x's PMIC and also add a comment
> > > regarding the PMIC's VCC_SD switching feature.
> > >
> > > Fixes: a80a1af6ec8a ("ARM: dts: tq imx7 common board support")
> > > Signed-off-by: Nora Schiffer <nora.schiffer@ew.tq-group.com>
> > > ---
> > >  arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi | 40 +++++++++++++----------
> > >  1 file changed, 23 insertions(+), 17 deletions(-)
> > >
> > > diff --git a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > > index e1f740edfb763..7f49c80fef4c6 100644
> > > --- a/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > > +++ b/arch/arm/boot/dts/nxp/imx/imx7-tqma7.dtsi
> > > @@ -46,8 +46,8 @@ pfuze3000: pmic@8 {
> > >
> > >  		regulators {
> > >  			sw1a_reg: sw1a {
> > > -				regulator-min-microvolt = <700000>;
> > > -				regulator-max-microvolt = <3300000>;
> > > +				regulator-min-microvolt = <1000000>;
> > > +				regulator-max-microvolt = <1225000>;
> > >  				regulator-boot-on;
> > >  				regulator-always-on;
> > >  				regulator-ramp-delay = <6250>;
> > > @@ -55,34 +55,33 @@ sw1a_reg: sw1a {
> > >
> > >  			/* use sw1c_reg to align with pfuze100/pfuze200 */
> > >  			sw1c_reg: sw1b {
> > > -				regulator-min-microvolt = <700000>;
> > > -				regulator-max-microvolt = <1475000>;
> > > +				regulator-min-microvolt = <1000000>;
> > > +				regulator-max-microvolt = <1000000>;
> > >  				regulator-boot-on;
> > >  				regulator-always-on;
> > >  				regulator-ramp-delay = <6250>;
> > >  			};
> > >
> > >  			sw2_reg: sw2 {
> > > -				regulator-min-microvolt = <1500000>;
> > > -				regulator-max-microvolt = <1850000>;
> > > +				regulator-min-microvolt = <1800000>;
> > > +				regulator-max-microvolt = <1800000>;
> > >  				regulator-boot-on;
> > >  				regulator-always-on;
> > >  			};
> > >
> > >  			sw3a_reg: sw3 {
> > > -				regulator-min-microvolt = <900000>;
> > > -				regulator-max-microvolt = <1650000>;
> > > +				regulator-min-microvolt = <1350000>;
> > > +				regulator-max-microvolt = <1350000>;
> > >  				regulator-boot-on;
> > >  				regulator-always-on;
> > >  			};
> > >
> > >  			swbst_reg: swbst {
> > > -				regulator-min-microvolt = <5000000>;
> > > -				regulator-max-microvolt = <5150000>;
> > > +				/* Not connected and left unconfigured */
> > >  			};
> > >
> > >  			snvs_reg: vsnvs {
> > > -				regulator-min-microvolt = <1000000>;
> > > +				regulator-min-microvolt = <3000000>;
> > >  				regulator-max-microvolt = <3000000>;
> > >  				regulator-boot-on;
> > >  				regulator-always-on;
> > > @@ -95,18 +94,25 @@ vref_reg: vrefddr {
> > >
> > >  			vgen1_reg: vldo1 {
> > >  				regulator-min-microvolt = <1800000>;
> > > -				regulator-max-microvolt = <3300000>;
> > > +				regulator-max-microvolt = <1800000>;
> > >  				regulator-always-on;
> > >  			};
> > >
> > >  			vgen2_reg: vldo2 {
> > > -				regulator-min-microvolt = <800000>;
> > > -				regulator-max-microvolt = <1550000>;
> > > +				regulator-min-microvolt = <1500000>;
> > > +				regulator-max-microvolt = <1500000>;
> > >  				regulator-always-on;
> > >  			};
> > >
> > >  			vgen3_reg: vccsd {
> > > -				regulator-min-microvolt = <2850000>;
> > > +				/*
> > > +				 * Specified values refer to 3.3V operation; voltage for 1.8V
> > > +				 * operation is derived from this.
> > > +				 *
> > > +				 * The base board should usually mux GPIO1_IO08 to SD1_VSELECT for
> > > +				 * automatic switching of SD card IO voltage.
> > > +				 */
> > > +				regulator-min-microvolt = <3300000>;
> > >  				regulator-max-microvolt = <3300000>;
> > >  				regulator-always-on;
> > >  			};
> > > @@ -118,13 +124,13 @@ vgen4_reg: v33 {
> > >  			};
> > >
> > >  			vgen5_reg: vldo3 {
> > > -				regulator-min-microvolt = <1800000>;
> > > +				regulator-min-microvolt = <3300000>;
> > >  				regulator-max-microvolt = <3300000>;
> > >  				regulator-always-on;
> > >  			};
> > >
> > >  			vgen6_reg: vldo4 {
> > > -				regulator-min-microvolt = <1800000>;
> > > +				regulator-min-microvolt = <3300000>;
> > >  				regulator-max-microvolt = <3300000>;
> > >  				regulator-always-on;
> > >  			};
> > > --
> > > TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> > > Amtsgericht München, HRB 105018
> > > Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> > > https://www.tq-group.com/
> > >
> > >
>
> --
> TQ-Systems GmbH | Mühlstraße 2, Gut Delling | 82229 Seefeld, Germany
> Amtsgericht München, HRB 105018
> Geschäftsführer: Detlef Schneider, Rüdiger Stahl, Stefan Schneider
> https://www.tq-group.com/