From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefano Babic Date: Mon, 27 Aug 2012 08:17:17 +0200 Subject: [U-Boot] [PATCH 3/4] efikamx: configure Smarttop PCBID and LED pads in DCD for convenience In-Reply-To: <1345663541-26682-3-git-send-email-matt@genesi-usa.com> References: <1345663541-26682-1-git-send-email-matt@genesi-usa.com> <1345663541-26682-3-git-send-email-matt@genesi-usa.com> Message-ID: <503B10ED.3000501@denx.de> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: u-boot@lists.denx.de On 22/08/2012 21:25, Matt Sealey wrote: > PCBID pads seem to need time to settle due to external pulldowns, otherwise > we are reading floating GPIO pins with implicit pad pullups and get the wrong > data. However we can't "wait" at the time we need them before relocation, > since timers are not available. The time taken to get from DCD to the code > requiring the pads set seems to be more than long enough (even with caches > enabled). > > We have space in the DCD due to the DDR settings changes to configure all > the pad settings we need for this, plus the LED pad settings too which > reduces the amount of code required later on. > > Signed-off-by: Matt Sealey > --- Applied to u-boot-imx, thanks. Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: sbabic at denx.de =====================================================================