Hi Heiko:
On 2016年01月14日 20:41, Heiko Stuebner wrote:
Hi Andy,
Am Donnerstag, 14. Januar 2016, 20:35:56 schrieb Andy Yan:
Rayeager board use pwm3 modulate the vdd_logic voltage, so enable it.
Signed-off-by: Andy Yan <andy.yan@xxxxxxxxxxxxxx>
---
arch/arm/boot/dts/rk3066a-rayeager.dts | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/arch/arm/boot/dts/rk3066a-rayeager.dts
b/arch/arm/boot/dts/rk3066a-rayeager.dts index 3d4c104..d17a5b8 100644
--- a/arch/arm/boot/dts/rk3066a-rayeager.dts
+++ b/arch/arm/boot/dts/rk3066a-rayeager.dts
@@ -78,6 +78,18 @@
};
};
+ pwm_regulator: pwm-regulator {
+ compatible = "pwm-regulator";
+ pwms = <&pwm3 0 1000>;
+ regulator-name = "vdd_logic";
+ regulator-min-microvolt = <1200000>;
+ regulator-max-microvolt = <1200000>;
I guess this is to make sure it stays at 1.2V at all times, or is the min-
microvolt settings supposed to be lower?
Thanks
Heiko
Yes, I want to fix it at 1.2V. When I read the regulator_register
function, I found it call regulator_do_set_voltate only when min=max.
So I set it like what you see.
regulator_register--->
set_machine_constrains--->
machine_constrains_voltage-->
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