From: Stefan Agner <stefan.ag...@toradex.com>
Disable 3.3V Ethernet and ARM rail when entering sleep mode.
Signed-off-by: Stefan Agner <stefan.ag...@toradex.com>
---
board/toradex/colibri_imx7/colibri_imx7.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/board/toradex/colibri_imx7/colibri_imx7.c
b/board/toradex/colibri_imx7/colibri_imx7.c
index c03bde168a..a106b3bed3 100644
--- a/board/toradex/colibri_imx7/colibri_imx7.c
+++ b/board/toradex/colibri_imx7/colibri_imx7.c
@@ -373,6 +373,22 @@ int power_init_board(void)
/* set judge and press timer of N_OE to minimal values */
pmic_clrsetbits(dev, RN5T567_NOETIMSETCNT, 0x7, 0);
+ /* configure sleep slot for 3.3V Ethernet */
+ reg = pmic_reg_read(dev, RN5T567_LDO1_SLOT);
+ reg = (reg & 0xf0) | reg >> 4;
+ pmic_reg_write(dev, RN5T567_LDO1_SLOT, reg);
+
+ /* disable DCDC2 discharge to avoid backfeeding through VFB2 */
+ pmic_clrsetbits(dev, RN5T567_DC2CTL, 0x2, 0);
+
+ /* configure sleep slot for ARM rail */
+ reg = pmic_reg_read(dev, RN5T567_DC2_SLOT);
+ reg = (reg & 0xf0) | reg >> 4;
+ pmic_reg_write(dev, RN5T567_DC2_SLOT, reg);
+
+ /* disable LDO2 discharge to avoid backfeeding from +V3.3_SD */
+ pmic_clrsetbits(dev, RN5T567_LDODIS1, 0x2, 0);
+
return 0;
}
--
2.12.0
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