Markus,
On 2019/11/12 下午4:16, Markus Reichl wrote:
Hi Kever,
have a rk3399-roc-pc running mainline U-Boot and kernel and vdd_log is
showing 1118 mV.
The rk3399-roc-pc have the same vdd_log circuit in schematic, so it
should like the patch 1/3 of
this patch set.
I don't understand who is setting this value, maybe the default value
without pwm regulator enabled?
Is this a danger for the board?
How to fix it?
The best way is to set correct min/max microvolt of the
regulator(measure with PWM output low and high),
(note that if no driver touch the regulator, the PWM is default input,
not output;)
and set a init-microvolt for U-Boot driver, and I think no kernel driver
touch this regulator now.
Thanks,
- Kever
Btw. vin-supply for this pwm-regulator is ignored and I could not find it
in bindings doc.
Gruß,
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