On Fri, Sep 5, 2014 at 12:32 PM, Gerald Coley <ger...@beagleboard.org> wrote: > SW is supposed to set it to 1.35V. Sounds like it got dropped somewhere > because initially it did.. It was designed this way because when it was > designed, the PMIC defaulted to 1.5V. Since the design there is a TPS65217D > that was release later that supports the 1.35V initial setting.
It should be set here: http://git.denx.de/?p=u-boot.git;a=blob;f=board/ti/am335x/board.c;h=0739e6021a21e71d7d0f5c840b793ce7fdf98fae;hb=HEAD#l275 269 /* 270 * Increase USB current limit to 1300mA or 1800mA and set 271 * the MPU voltage controller as needed. 272 */ 273 if (dpll_mpu_opp100.m == MPUPLL_M_1000) { 274 usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1800MA; 275 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1325MV; 276 } else { 277 usb_cur_lim = TPS65217_USB_INPUT_CUR_LIMIT_1300MA; 278 mpu_vdd = TPS65217_DCDC_VOLT_SEL_1275MV; 279 } But that only happens if you have the "beaglebone black" header in eeprom: 262 /* 263 * Override what we have detected since we know if we have 264 * a Beaglebone Black it supports 1GHz. 265 */ 266 if (board_is_bone_lt(&header)) So you'll have to override that check. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
