[PATCH] arm64: dts: amlogic: gxl: set i2c bias to pull-up

From: Da Xue
Date: Fri Apr 25 2025 - 16:31:30 EST


GXL I2C pins need internal pull-up enabled to operate if there
is no external resistor. The pull-up is 60kohms per the datasheet.

We should set the bias when i2c pinmux is enabled.

Signed-off-by: Da Xue <da@libre.computer>
---
arch/arm64/boot/dts/amlogic/meson-gxl.dtsi | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
index 2dc2fdaecf9f..aed8dbfbb64d 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl.dtsi
@@ -214,7 +214,7 @@ mux {
groups = "i2c_sck_ao",
"i2c_sda_ao";
function = "i2c_ao";
- bias-disable;
+ bias-pull-up;
};
};

@@ -576,7 +576,7 @@ mux {
groups = "i2c_sck_a",
"i2c_sda_a";
function = "i2c_a";
- bias-disable;
+ bias-pull-up;
};
};

@@ -585,7 +585,7 @@ mux {
groups = "i2c_sck_b",
"i2c_sda_b";
function = "i2c_b";
- bias-disable;
+ bias-pull-up;
};
};

@@ -594,7 +594,7 @@ mux {
groups = "i2c_sck_c",
"i2c_sda_c";
function = "i2c_c";
- bias-disable;
+ bias-pull-up;
};
};

@@ -603,7 +603,7 @@ mux {
groups = "i2c_sck_c_dv19",
"i2c_sda_c_dv18";
function = "i2c_c";
- bias-disable;
+ bias-pull-up;
};
};

--
2.39.5