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imx: ventana: add PMIC fix for GW54xx-G

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Substitutions in EOL parts changes the VDD_2P5 voltage rail such that
the previously unused VGEN6 LDO is needed in place of the lower power
VGEN5 for the GW54xx-G.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
This commit is contained in:
Tim Harvey
2021-06-11 12:46:22 -07:00
committed by Stefano Babic
parent 6a4c67859c
commit a32be88da0
1 changed files with 22 additions and 0 deletions
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22
board/gateworks/gw_ventana/common.c
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@@ -1550,6 +1550,17 @@ void setup_pmic(void)
int board = read_eeprom(CONFIG_I2C_GSC, &ventana_info);
const int i2c_pmic = 1;
u32 reg;
char rev;
int i;
/* determine board revision */
rev = 'A';
for (i = sizeof(ventana_info.model) - 1; i > 0; i--) {
if (ventana_info.model[i] >= 'A') {
rev = ventana_info.model[i];
break;
}
}
i2c_set_bus_num(i2c_pmic);
@@ -1573,6 +1584,17 @@ void setup_pmic(void)
reg &= ~(SWBST_MODE_MASK | SWBST_VOL_MASK);
reg |= (SWBST_5_00V | (SWBST_MODE_AUTO << SWBST_MODE_SHIFT));
pmic_reg_write(p, PFUZE100_SWBSTCON1, reg);
if (board == GW54xx && (rev == 'G')) {
/* Disable VGEN5 */
pmic_reg_write(p, PFUZE100_VGEN5VOL, 0);
/* Set VGEN6 to 2.5V and enable */
pmic_reg_read(p, PFUZE100_VGEN6VOL, &reg);
reg &= ~(LDO_VOL_MASK);
reg |= (LDOB_2_50V | LDO_EN);
pmic_reg_write(p, PFUZE100_VGEN6VOL, reg);
}
}
}