From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?Q?Ond=C5=99ej?= Jirman Date: Wed, 01 Nov 2017 03:20:18 +0100 Subject: [U-Boot] [linux-sunxi] Re: [PATCH] sunxi: set the default CPUx frequency of H5 to 816MHz In-Reply-To: <1509502224.27172.3.camel@xff.cz> References: <20171030233628.24367-1-icenowy@aosc.io> <655c14fa3074f1930e6b1d058324af88@aosc.io> <20171031135441.wdbromnlischud4t@flea> <62fd699f8fa09a1ca360014cf8fa35b9@aosc.io> <1509502224.27172.3.camel@xff.cz> Message-ID: <1509502818.27172.8.camel@megous.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit To: u-boot@lists.denx.de '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 > > > > > > -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: This is a digitally signed message part URL: