Am Freitag, den 05.12.2014, 16:23 +0800 schrieb Anson Huang: > Currently the cpufreq volt/freq table we used is > for LDO enable mode, according to latest datasheet > Rev. 3, 03/2014, the volt/freq table is as below: > > LDO enabled(min value): > 996MHz: VDDARM: 1.225V, VDDSOC: 1.150V; > 792MHz: VDDARM: 1.150V, VDDSOC: 1.150V; > 396MHz: VDDARM: 1.050V, VDDSOC: 1.150V;
>From which datasheet is this? I find it unlikely that the LDO enabled values are not larger than the LDO bypassed ones. I just had a look at the "i.MXSolo/6DualLite Automotive and Infotainment Applications Processors" Datasheet (IMX6SDLAEC) Rev. 3, 03/2014 and the "i.MX 6Solo/6DualLite Applications Processors for Consumer Products" Datasheet (IMX6SDLCEC) Rev. 3, 03/2014, and they both have different values in Table 9 (Operating Ranges) for the LDO enabled case: LDO enabled(min value): 996MHz: VDDARM: 1.350V, VDDSOC: 1.275V; 792MHz: VDDARM: 1.275V, VDDSOC: 1.275V; 396MHz: VDDARM: 1.175V, VDDSOC: 1.275V; > LDO bypassed(min value): > 996MHz: VDDARM: 1.250V, VDDSOC: 1.150V; > 792MHz: VDDARM: 1.150V, VDDSOC: 1.150V; > 396MHz: VDDARM: 1.050V, VDDSOC: 1.150V; > > Adding 25mV to cover board IR drop, for LDO enabled > mode of 996MHz, VDDARM should be 1.250V, so this > patch updates it. > > Signed-off-by: Anson Huang <[email protected]> regards Philipp -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
