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From: "Ondřej Jirman" <megous@megous.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [linux-sunxi] Re: [PATCH] sunxi: set the default CPUx frequency of H5 to 816MHz
Date: Wed, 01 Nov 2017 03:20:18 +0100	[thread overview]
Message-ID: <1509502818.27172.8.camel@megous.com> (raw)
In-Reply-To: <1509502224.27172.3.camel@xff.cz>

'Ondřej Jirman' via linux-sunxi píše v St 01. 11. 2017 v 03:10 +0100:
> Hi,
> 
> Icenowy Zheng píše v St 01. 11. 2017 v 08:31 +0800:
> > 
> > And according to the Orange Pi PC2 and Prime schematics, they both
> > start at 1.1V. (The Prime schematics even says "For H5 adjust
> > VDD-CPUX to 1.1V).
> > 
> 
> Orange Pi PC2 starts at the same voltage as Orange Pi PC. That is at
> 1.308V.
> 
> It can be calculated from 0.6×(1+11.8÷10) as per the values of Ru1/Ru2
> resistors in the schema. It is also my experience of working with these
> boards and writing the sy8106a driver.

Anyway, I may be mis-remembering in the case of PC2. So please ignore
me. :) I'm only sure in the case of Orange Pi PC, which is not relevant
here. Sorry.

> regards,
>   Ondrej
> 
> > > 
> > > There's no need to enforce a SoC-wide change.
> > > 
> > > Maxime
> > 
> > 
> 
> 
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  reply	other threads:[~2017-11-01  2:20 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-10-30 23:36 [U-Boot] [PATCH] sunxi: set the default CPUx frequency of H5 to 816MHz Icenowy Zheng
2017-10-31  7:57 ` Jagan Teki
2017-10-31  8:05   ` icenowy at aosc.io
2017-10-31  8:53     ` Jagan Teki
2017-10-31  9:08       ` Icenowy Zheng
2017-10-31 13:54     ` Maxime Ripard
2017-11-01  0:31       ` Icenowy Zheng
2017-11-01  2:10         ` [U-Boot] [linux-sunxi] " Ondřej Jirman
2017-11-01  2:20           ` Ondřej Jirman [this message]
2017-11-01  9:16           ` Jagan Teki
2017-11-02 13:56         ` [U-Boot] " Maxime Ripard
2017-11-03  8:51           ` Jagan Teki
2017-11-03 16:30             ` Maxime Ripard
2017-11-06  8:10               ` Jagan Teki
2017-12-02 16:27                 ` Jagan Teki

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