9 Apr
2021
9 Apr
'21
1:24 p.m.
From: Haibo Chen haibo.chen@nxp.com Some board like imx8mm-evkb, IO voltage switch from 3.3v to 1.8v need around 18ms, common code only delay 10ms, so need to delay extra 8ms. Otherwise voltage switch will timeout when wait for data0 line. This IO voltage switch time depends on board design, depend on the PMIC and capacitance. imx8mm-evkb board use PCA9450(PMIC) and 10uF capacitance. Signed-off-by: Haibo Chen haibo.chen@nxp.com
Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic
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