Part of GPIO pads in npcx series support low-voltage (1.8V) level
detection. In order to introduce this feature, this CL adds a new
NPCX-specific controller property, lvol_io_pads, in devicetree file.
For example, here is devicetree fragment which turn on low-voltage
support of i2c1_0 port.
/ {
def_lvol_io_list {
compatible = "nuvoton,npcx-lvolctrl-def";
lvol_io_pads = <&lvol_io90 /* I2C1_SCL0 1.8V support */
&lvol_io87>; /* I2C1_SDA0 1,8V support */
};
};
Then these pads will turn on 1.8V level detection during initialization.
Signed-off-by: Mulin Chao <mlchao@nuvoton.com>
b7ec2cd5de