board: msm8x60: allow hw to stabilize on resume
Waiting for I2C-slave (touchscreen) stabilization. Some
slaves need this delay after their RESET line is taken out of reset, others
need it when power is applied if there is no RESET line. In touchscreen
case, this appears to be added after regulator is turned on as well since
there is no explicit RESET line being used. The time for I2C
slave-stabilization varies by slave and most of the times, it's not
explicitly specified in the specs. So it has to change from board to board.
CRs-fixed: 297832
Signed-off-by: Amy Maloche <amaloche@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm8x60.c b/arch/arm/mach-msm/board-msm8x60.c
index 5393b9f..42ffae2 100644
--- a/arch/arm/mach-msm/board-msm8x60.c
+++ b/arch/arm/mach-msm/board-msm8x60.c
@@ -3224,7 +3224,7 @@
__func__, vreg_on ? "enable" : "disable", rc);
/* wait for vregs to stabilize */
- usleep_range(10000, 10000);
+ msleep(20);
return rc;
}