Hi Abel, Am Dienstag, den 12.02.2019, 12:21 +0000 schrieb Abel Vesa: > From: Anson Huang <[email protected]> > > Register cpu-freq platform driver for i.MX8. > i.MX8MQ has different parts like consumer, industrial and auto etc., > different parts have different cpufreq set-points, this patch adds > fuse check to select correct cpufreq set-points for each part. The > default dtb has all set-points available, then kernel will check fuse > to disable those unused set-points, definition as below: > > OCOTP offset 0x440, bit [7:6] > > '00' - Consumer 0C to 95C > '01' - Ext. Consumer -20C to 105C > '10' - Industrial -40C to 105C > '11' - Automotive -40C to 125C
Shouldn't this read 0x440 [9:8] (SPEED_GRADING) instead? According to the RM those 2 bits directly encode the maximum ARM core frequency, so we don't need to guess from the target market. Regards, Lucas
