imx: mx6ul configure the PMIC_STBY_REQ pin as open drain
Configure the PMIC_STBY_REQ pin as open drain 100K according
to the design team's requirement for the PMIC_STBY_REQ pin
for i.MX 6UltraLite TO1.0.
Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Stefano Babic <sbabic@denx.de>
diff --git a/arch/arm/cpu/armv7/mx6/soc.c b/arch/arm/cpu/armv7/mx6/soc.c
index f29901f..d4b22ad 100644
--- a/arch/arm/cpu/armv7/mx6/soc.c
+++ b/arch/arm/cpu/armv7/mx6/soc.c
@@ -341,7 +341,17 @@
set_ahb_rate(132000000);
}
- /* Set perclk to source from OSC 24MHz */
+ if (IS_ENABLED(CONFIG_MX6UL) && is_soc_rev(CHIP_REV_1_0) == 0) {
+ /*
+ * According to the design team's requirement on i.MX6UL,
+ * the PMIC_STBY_REQ PAD should be configured as open
+ * drain 100K (0x0000b8a0).
+ * Only exists on TO1.0
+ */
+ writel(0x0000b8a0, IOMUXC_BASE_ADDR + 0x29c);
+ }
+
+ /* Set perclk to source from OSC 24MHz */
#if defined(CONFIG_MX6SL)
set_preclk_from_osc();
#endif