From mboxrd@z Thu Jan 1 00:00:00 1970 From: Orjan Friberg Date: Wed, 6 Jul 2011 13:12:38 +0200 Subject: [U-Boot] [PATCH 2/4 v3] musb: Add Phy programming for usingexternal Vbus In-Reply-To: <19F8576C6E063C45BE387C64729E739404E3485DEC@dbde02.ent.ti.com> References: <1276149050-12974-1-git-send-email-ajay.gupta@ti.com> <1276149050-12974-2-git-send-email-ajay.gupta@ti.com> <4E12CF3C.1020004@flatfrog.com> <19F8576C6E063C45BE387C64729E739404E3485D3B@dbde02.ent.ti.com> <4E12FAE3.4090909@flatfrog.com> <19F8576C6E063C45BE387C64729E739404E3485DEC@dbde02.ent.ti.com> Message-ID: <4E144326.1040008@flatfrog.com> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 2011-07-05 16:16, Gupta, Ajay Kumar wrote: >> (On our custom board, we have added an external vbus supply to be able >> to draw> 100 mA.) > So it seems you are using PHY inside TPS659x but external Vbus for which > I think you need to, > 1. Explicitly set "OTG_CTRL.D5 = 0" so that PHY doesn't drive 5V. > 2. Do not set musb_cfg.extvbus Great, thanks for clarifying (and agreed on all points). It seems the best I can do is turn off DRVVBUS as soon as the chip has entered host mode (and turned thus it on). Thanks, Orjan -- Orjan Friberg FlatFrog Laboratories AB