saradc: a4: fix the issue of large sampling errors of some chips [1/1]

PD#SWPL-138099

Problem:
Fix the issue of large sampling errors of some chips.

Solution:
Configured in single-ended mode and calibrated using the formula.

Verify:
A4/BA400

Change-Id: Iee4495b1e52efda60897998142b89d508c75a0f7
Signed-off-by: Huqiang Qin <huqiang.qin@amlogic.com>
1 file changed