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colibri_imx7: setup PMIC sleep mode configuration 

Disable 3.3V Ethernet and ARM rail when entering sleep mode.

Signed-off-by: Stefan Agner <stefan.agner@toradex.com>
This commit is contained in:
Stefan Agner 2017-03-09 17:17:53 -08:00 committed by Stefano Babic
parent 5a986dfeef
commit 05ed964d75
1 changed files with 16 additions and 0 deletions
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16
board/toradex/colibri_imx7/colibri_imx7.c
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@ -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;
}