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[PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi

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  [PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi Timo Sigurdsson <public_timo.s@silentcreek.de> - 2015-08-02 18:20 +0200
    Re: [PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi Maxime Ripard <maxime.ripard@free-electrons.com> - 2015-08-03 11:50 +0200
      Re: [linux-sunxi] Re: [PATCH v2] ARM: dts: sunxi: Add regulators for  LeMaker BananaPi Hans de Goede <hdegoede@redhat.com> - 2015-08-03 15:20 +0200
      Re: [PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi "Timo Sigurdsson" <public_timo.s@silentcreek.de> - 2015-08-04 11:10 +0200

#1198403 — [PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi

sun7i-a20-bananapi.dts doesn't contain regulator nodes for the AXP209 PMU
driver, so add them to allow for voltage-scaling with cpufreq-dt.

Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
---
Changes since v1 (RFC):

- Dropped the changes to the cpufreq operating points and renamed the patch
accordingly
- Limited the CPU voltage range so it doesn't exceed the SOC specifications
---
 arch/arm/boot/dts/sun7i-a20-bananapi.dts | 35 ++++++++++++++++++++++++++++----
 1 file changed, 31 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
index 9f7b472..74382f3 100644
--- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
+++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
@@ -92,6 +92,10 @@
 	status = "okay";
 };
 
+&cpu0 {
+	cpu-supply = <&reg_dcdc2>;
+};
+
 &ehci0 {
 	status = "okay";
 };
@@ -119,13 +123,9 @@
 	status = "okay";
 
 	axp209: pmic@34 {
-		compatible = "x-powers,axp209";
 		reg = <0x34>;
 		interrupt-parent = <&nmi_intc>;
 		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
-
-		interrupt-controller;
-		#interrupt-cells = <1>;
 	};
 };
 
@@ -182,6 +182,33 @@
 	};
 };
 
+#include "axp209.dtsi"
+
+&reg_dcdc2 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-cpu";
+};
+
+&reg_dcdc3 {
+	regulator-always-on;
+	regulator-min-microvolt = <1000000>;
+	regulator-max-microvolt = <1400000>;
+	regulator-name = "vdd-int-dll";
+};
+
+&reg_ldo1 {
+	regulator-name = "vdd-rtc";
+};
+
+&reg_ldo2 {
+	regulator-always-on;
+	regulator-min-microvolt = <3000000>;
+	regulator-max-microvolt = <3000000>;
+	regulator-name = "avcc";
+};
+
 &reg_usb1_vbus {
 	status = "okay";
 };
-- 
2.1.4

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#1198685

[Multipart message — attachments visible in raw view] — view raw

On Sun, Aug 02, 2015 at 06:18:25PM +0200, Timo Sigurdsson wrote:
> sun7i-a20-bananapi.dts doesn't contain regulator nodes for the AXP209 PMU
> driver, so add them to allow for voltage-scaling with cpufreq-dt.
> 
> Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
> ---
> Changes since v1 (RFC):
> 
> - Dropped the changes to the cpufreq operating points and renamed the patch
> accordingly
> - Limited the CPU voltage range so it doesn't exceed the SOC specifications
> ---
>  arch/arm/boot/dts/sun7i-a20-bananapi.dts | 35 ++++++++++++++++++++++++++++----
>  1 file changed, 31 insertions(+), 4 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
> index 9f7b472..74382f3 100644
> --- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
> +++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
> @@ -92,6 +92,10 @@
>  	status = "okay";
>  };
>  
> +&cpu0 {
> +	cpu-supply = <&reg_dcdc2>;
> +};
> +
>  &ehci0 {
>  	status = "okay";
>  };
> @@ -119,13 +123,9 @@
>  	status = "okay";
>  
>  	axp209: pmic@34 {
> -		compatible = "x-powers,axp209";
>  		reg = <0x34>;
>  		interrupt-parent = <&nmi_intc>;
>  		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
> -
> -		interrupt-controller;
> -		#interrupt-cells = <1>;
>  	};
>  };
>  
> @@ -182,6 +182,33 @@
>  	};
>  };
>  
> +#include "axp209.dtsi"
> +
> +&reg_dcdc2 {
> +	regulator-always-on;
> +	regulator-min-microvolt = <1000000>;
> +	regulator-max-microvolt = <1400000>;
> +	regulator-name = "vdd-cpu";
> +};
> +
> +&reg_dcdc3 {
> +	regulator-always-on;
> +	regulator-min-microvolt = <1000000>;
> +	regulator-max-microvolt = <1400000>;
> +	regulator-name = "vdd-int-dll";
> +};
> +
> +&reg_ldo1 {
> +	regulator-name = "vdd-rtc";
> +};
> +
> +&reg_ldo2 {
> +	regulator-always-on;
> +	regulator-min-microvolt = <3000000>;
> +	regulator-max-microvolt = <3000000>;
> +	regulator-name = "avcc";
> +};

What regulator provides the 3.3V regulator used in the rest of this DT
then (MMC, GMAC) ?

Maxime

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

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#1198847 — Re: [linux-sunxi] Re: [PATCH v2] ARM: dts: sunxi: Add regulators for LeMaker BananaPi

Hi,

On 03-08-15 11:47, Maxime Ripard wrote:
> On Sun, Aug 02, 2015 at 06:18:25PM +0200, Timo Sigurdsson wrote:
>> sun7i-a20-bananapi.dts doesn't contain regulator nodes for the AXP209 PMU
>> driver, so add them to allow for voltage-scaling with cpufreq-dt.
>>
>> Signed-off-by: Timo Sigurdsson <public_timo.s@silentcreek.de>
>> ---
>> Changes since v1 (RFC):
>>
>> - Dropped the changes to the cpufreq operating points and renamed the patch
>> accordingly
>> - Limited the CPU voltage range so it doesn't exceed the SOC specifications
>> ---
>>   arch/arm/boot/dts/sun7i-a20-bananapi.dts | 35 ++++++++++++++++++++++++++++----
>>   1 file changed, 31 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/sun7i-a20-bananapi.dts b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
>> index 9f7b472..74382f3 100644
>> --- a/arch/arm/boot/dts/sun7i-a20-bananapi.dts
>> +++ b/arch/arm/boot/dts/sun7i-a20-bananapi.dts
>> @@ -92,6 +92,10 @@
>>   	status = "okay";
>>   };
>>
>> +&cpu0 {
>> +	cpu-supply = <&reg_dcdc2>;
>> +};
>> +
>>   &ehci0 {
>>   	status = "okay";
>>   };
>> @@ -119,13 +123,9 @@
>>   	status = "okay";
>>
>>   	axp209: pmic@34 {
>> -		compatible = "x-powers,axp209";
>>   		reg = <0x34>;
>>   		interrupt-parent = <&nmi_intc>;
>>   		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
>> -
>> -		interrupt-controller;
>> -		#interrupt-cells = <1>;
>>   	};
>>   };
>>
>> @@ -182,6 +182,33 @@
>>   	};
>>   };
>>
>> +#include "axp209.dtsi"
>> +
>> +&reg_dcdc2 {
>> +	regulator-always-on;
>> +	regulator-min-microvolt = <1000000>;
>> +	regulator-max-microvolt = <1400000>;
>> +	regulator-name = "vdd-cpu";
>> +};
>> +
>> +&reg_dcdc3 {
>> +	regulator-always-on;
>> +	regulator-min-microvolt = <1000000>;
>> +	regulator-max-microvolt = <1400000>;
>> +	regulator-name = "vdd-int-dll";
>> +};
>> +
>> +&reg_ldo1 {
>> +	regulator-name = "vdd-rtc";
>> +};
>> +
>> +&reg_ldo2 {
>> +	regulator-always-on;
>> +	regulator-min-microvolt = <3000000>;
>> +	regulator-max-microvolt = <3000000>;
>> +	regulator-name = "avcc";
>> +};
>
> What regulator provides the 3.3V regulator used in the rest of this DT
> then (MMC, GMAC) ?

A separate fixed regulator, like most (all?) other axp209 using boards,
e.g. the cubieboard has a TCS4199 regulator for this, and the banana
boards use a XL8206/UP1746 for this, according to the schematics I
have.

Regards,

Hans

>
> Maxime
>
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#1199581

Hi Maxime,

Maxime Ripard schrieb am 03.08.2015 11:47:
> What regulator provides the 3.3V regulator used in the rest of this DT
> then (MMC, GMAC) ?

For GMAC, there is a reg_gmac_3v3 defined in sun7i-a20-bananapi.dts [1].
MMC uses reg_vcc3v3 included from sunxi-common-regulators.dtsi. Am I
missing something? Is this not sufficient?


Thanks,

Timo

[1] https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/sun7i-a20-bananapi.dts?id=v4.2-rc5#n78
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