[PATCH v3 17/22] arm64: dts: mediatek: mt7988a-bpi-r4: Enable I2C controllers

Frank Wunderlich
2024-12-17T09:13:05Z

Enable the I2C0, I2C2 controllers found on the BananaPi R4 board.
Both controllers are not accessible from user and having fixed spare
devices. I2C0 have a pmic connected, I2C2 is used with I2C-multiplexer
for e.g. SFP cages.
The missing I2C1 is connected to GPIO header which can have either GPIO
mode or I2C mode.

Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
.../boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts | 12 ++++++++++++
arch/arm64/boot/dts/mediatek/mt7988a.dtsi | 6 +++---
2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
index 46117df7d44c..3d165f7b29dc 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7988a-bananapi-bpi-r4.dts
@@ -60,6 +60,18 @@ cpu_trip_active_low: active-low {
};
};

+&i2c0 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pins>;
+ status = "okay";
+};
+
+&i2c2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c2_1_pins>;
+ status = "okay";
+};
+
&pio {
mdio0_pins: mdio0-pins {
mux {
diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
index 59a1ffc2edfc..c0a49f68834a 100644
--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
@@ -269,7 +269,7 @@ serial@11000200 {
status = "disabled";
};

- i2c@11003000 {
+ i2c0: i2c@11003000 {
compatible = "mediatek,mt7981-i2c";
reg = <0 0x11003000 0 0x1000>,
<0 0x10217080 0 0x80>;
@@ -283,7 +283,7 @@ i2c@11003000 {
status = "disabled";
};

- i2c@11004000 {
+ i2c1: i2c@11004000 {
compatible = "mediatek,mt7981-i2c";
reg = <0 0x11004000 0 0x1000>,
<0 0x10217100 0 0x80>;
@@ -297,7 +297,7 @@ i2c@11004000 {
status = "disabled";
};

- i2c@11005000 {
+ i2c2: i2c@11005000 {
compatible = "mediatek,mt7981-i2c";
reg = <0 0x11005000 0 0x1000>,
<0 0x10217180 0 0x80>;
--
2.43.0