Hi, I ran the mainline Kernel the first time on my Colibri T20. I compiled 3.11-rc2 without any patch, but the kernel refused to boot, the boot process freezed just while probing SM2: [ 0.420075] vdd_sm2,vdd_ddr: 3700 mV I then applied this patch, but without luck, the freeze happend even earlier: [ 0.413314] vdd_sm1,vdd_cpu: supplied by vdd_5v0 However, using 3.8 works for me: [ 0.419848] vdd_sm2,vdd_ddr: 3800 mV [ 0.423851] vdd_sm2,vdd_ddr: supplied by vdd_5v0 My Module Version is 1.2a with TPS658643 PMIC on it. Am 2013-07-21 23:28, schrieb Lucas Stach: > Core and CPU voltage settings were a bit on the safe side. The actually > used chips on the Colibri allow for lower voltages and work just fine > this way. This voltages seem to work for me too... > SM2 is not a the parent of LDO regs, but actually the DDR regulator. The > Colibri uses a different version of the TPS with other voltage mapping > tables for SM2, currently we cheat by setting a fake 3,2V which results > in 1,8V physical. I could successfully boot with 1.8V, but with messages complaining that probe failed... -- Stefan -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html