Hi, 2010/11/19 Premi, Sanjeev <[email protected]>: >> -----Original Message----- >> From: Enric Balletbò i Serra [mailto:[email protected]] >> Sent: Friday, November 19, 2010 6:30 PM >> To: Premi, Sanjeev >> Cc: [email protected]; Steve Sakoman >> Subject: Re: [U-Boot] AM/DM37X How to configure registers to >> get 1000MHz >> >> Hi, >> >> Thanks for your reply >> >> 2010/11/19 Premi, Sanjeev <[email protected]>: >> >> -----Original Message----- >> >> From: [email protected] >> >> [mailto:[email protected]] On Behalf Of Enric >> >> Balletbò i Serra >> >> Sent: Friday, November 19, 2010 2:42 PM >> >> To: [email protected]; Steve Sakoman >> >> Subject: [U-Boot] AM/DM37X How to configure registers to >> get 1000MHz >> >> >> >> Hi all, >> >> >> >> I would ask a question, maybe someone can help, which is the better >> >> way to configure the PRCM registers to get 1000MHz on AM/DM37X >> >> processor ? >> > >> > You need set the multipliers and dividers apprioriately - >> based on the >> > sysclk. >> > >> > Would help to understand the context of "better"? >> >> I'm thinking in two scenarios : >> >> 1. For OMAP35X there are devices that support 600MHz as max frequency >> but others supports 720MHz, I want to set by default 600MHz and if >> device supports 720MHz change to this frequency. > > [sp] You can look at one of my patches on linux kernel to identify the > device capability for 600/720MHz.
I''ll do, thanks > >> 2. For AM/DM37X, maybe I'm wrong, but the default frequency for >> AM/DM37X is set to 600MHz, Like OMAP35X i want to set default to >> 800MHz and i device supports change to 1000MHz. > > [sp] The device comes up at 600MHz for now, but there is no limitation > on device to go all the way to 1GHz. > >> >> Which is the better way to do this ? > > [sp] So, you are looking for common mechanism to go to highest supported > frequency. Right? Yes, I think should be interesting for all OMAP35/AM/DM37 a mechanism like this. > >> >> Thanks in advance, >> Enric >> >> > >> > ~sanjeev >> > >> >> >> >> Thanks in advance, >> >> Enric >> >> _______________________________________________ >> >> U-Boot mailing list >> >> [email protected] >> >> http://lists.denx.de/mailman/listinfo/u-boot >> >> >> _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
