EC25 EPHY_RST_N gpio power domain selection

Technical Subjects Driver
1

Hi,

I’m trying to use the gpio pin EPHY_RST_N to reset an external switch.
The problem is that when I set it to output-high the pin goes to 2.85V but I need to set it to 1.8V.
How can I configure the right power domain in the device tree?

This is my current device-tree for this pin:
emac0_ephy_active: emac0_ephy_active {
/* active state /
mux {
/ EPHY RST */
pins = “gpio29”;
function = “gpio”;
};

			config {
				pins = "gpio29";
				drive-strength = <16>; /* 16 MA */
				bias-pull-up;
				output-high;
			};
		};

		emac0_ephy_sleep: emac0_ephy_sleep {
			/* suspended state */
			mux {
				/* EPHY RST */
				pins = "gpio29";
				function = "gpio";
			};

			config {
				pins = "gpio29";
				drive-strength = <2>; /* 2 MA */
				bias-disable;
				output-low;
			};
		};

Thanks,
Angelo

2

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Please check the hardware design.