My sabresd based new custom board, kernel report error:
mc_pfuze 1-0008: recv failed!:-5,0
mc_pfuze: probe of 1-0008 failed with error -5
Hardware reset to PMIC, boot loader can probe PMIC properly:
Found PFUZE100! deviceid=10,revid=11
Because our linux system software reset is WDOG based, it won't reset PMIC.
After reset ,boot loader will not report PFUZE100 found. Strange issue, Why?
With oscilloscope support, I found the PFUZE100 i2c access failed with no ACK in 9th i2c clk.
Anyone ever encounter issue like this?
解決済! 解決策の投稿を見る。
Touch panel and PMIC share the same i2c bus but has different pull up power voltage.