[PATCH v2] arm, am335x: add support for the bosch shc board
Heiko Schocher
hs at denx.de
Mon Nov 30 22:09:27 PST 2015
Hello Tony,
Am 01.12.2015 um 06:53 schrieb Tony Lindgren:
> * Heiko Schocher <hs at denx.de> [151130 21:21]:
>> Hello Tony,
>>
>> Am 30.11.2015 um 22:41 schrieb Tony Lindgren:
>>> * Heiko Schocher <hs at denx.de> [151117 00:25]:
>>>> --- /dev/null
>>>> +++ b/arch/arm/boot/dts/am335x-shc.dts
>>>> +&tps {
>>>> + compatible = "ti,tps65217";
>>>> + ti,pmic-shutdown-controller;
>>>> +
>>>> + regulators {
>>>> + #address-cells = <1>;
>>>> + #size-cells = <0>;
>>>> +
>>>> + dcdc1_reg: regulator at 0 {
>>>> + reg = <0>;
>>>> + regulator-name = "vdds_dpr";
>>>> + regulator-compatible = "dcdc1";
>>>> + regulator-min-microvolt = <1300000>;
>>>> + regulator-max-microvolt = <1450000>;
>>>> + regulator-boot-on;
>>>> + regulator-always-on;
>>>> + };
>>>> +
>>>> + dcdc2_reg: regulator at 1 {
>>>> + reg = <1>;
>>>> + /*
>>>> + * VDD_MPU voltage limits 0.95V - 1.26V with
>>>> + * +/-4% tolerance
>>>> + */
>>>> + regulator-compatible = "dcdc2";
>>>> + regulator-name = "vdd_mpu";
>>>> + regulator-min-microvolt = <925000>;
>>>> + regulator-max-microvolt = <1375000>;
>>>> + regulator-boot-on;
>>>> + regulator-always-on;
>>>> + regulator-ramp-delay = <70000>;
>>>> + };
>>>> +
>>>> + dcdc3_reg: regulator at 2 {
>>>> + reg = <2>;
>>>> + /*
>>>> + * VDD_CORE voltage limits 0.95V - 1.1V with
>>>> + * +/-4% tolerance
>>>> + */
>>>> + regulator-name = "vdd_core";
>>>> + regulator-compatible = "dcdc3";
>>>> + regulator-min-microvolt = <925000>;
>>>> + regulator-max-microvolt = <1125000>;
>>>> + regulator-boot-on;
>>>> + regulator-always-on;
>>>> + };
>>>> +
>>>> + ldo1_reg: regulator at 3 {
>>>> + reg = <3>;
>>>> + regulator-name = "vio,vrtc,vdds";
>>>> + regulator-compatible = "ldo1";
>>>> + regulator-min-microvolt = <1000000>;
>>>> + regulator-max-microvolt = <1800000>;
>>>> + regulator-always-on;
>>>> + };
>>>> +
>>>> + ldo2_reg: regulator at 4 {
>>>> + reg = <4>;
>>>> + regulator-name = "vdd_3v3aux";
>>>> + regulator-compatible = "ldo2";
>>>> + regulator-min-microvolt = <900000>;
>>>> + regulator-max-microvolt = <3300000>;
>>>> + regulator-always-on;
>>>> + };
>>>> +
>>>> + ldo3_reg: regulator at 5 {
>>>> + reg = <5>;
>>>> + regulator-name = "vdd_1v8";
>>>> + regulator-compatible = "ldo3";
>>>> + regulator-min-microvolt = <900000>;
>>>> + regulator-max-microvolt = <1800000>;
>>>> + regulator-always-on;
>>>> + };
>>>> +
>>>> + ldo4_reg: regulator at 6 {
>>>> + reg = <6>;
>>>> + regulator-name = "vdd_3v3a";
>>>> + regulator-compatible = "ldo4";
>>>> + regulator-min-microvolt = <1800000>;
>>>> + regulator-max-microvolt = <3300000>;
>>>> + regulator-always-on;
>>>> + };
>>>> + };
>>>> +};
>>>
>>> Applying this into omap-for-v4.5/dt.. But I'm getting concerned about this
>>> "regulator-always-on" stuff and having multiple copies of the same thing.
>>>
>>> I think we should have a common am33xx-tps65217.dtsi file that has the
>>> regulators defined at one place and other then include it. And they are
>>> controllable AFAIK..
>>
>> Hmm... Mark Brown (added to Cc) suggested to move this regulator nodes
>> into the board DT file and remove such files [1].
>
> Hmm it was probably the name of that file causing confusion as it was not
> am33xx specific. If we have many board variants using almost the same exact
> regulators and configuration it totally makes sense to have a shared dtsi
> file for them :)
Ack.
> It may actually be better to have it as am33xx-common.dtsi and I bet that
> covers quite a few am33xx boards for the basic shared functionality.
I try to find some time to make such a patch...
bye,
Heiko
>
> Regards,
>
> Tony
>
>
>> [1] https://lkml.org/lkml/2015/10/21/581
>
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