linux-kernel - [PATCH RFC 1/3] arm64: dts: ti: k3-am625-beagleplay: Add Grove connector pinmux options

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Date: Tue, 2 Jul 2024 11:44:01 -0500
From: Andrew Davis <afd@...com>
To: Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero
 Kristo <kristo@...nel.org>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>, Andrew Lunn <andrew@...n.ch>,
        Vaishnav M A
	<vaishnav@...gleboard.org>,
        Derek Kiernan <derek.kiernan@....com>,
        Dragan
 Cvetic <dragan.cvetic@....com>, Arnd Bergmann <arnd@...db.de>,
        Michael Walle
	<mwalle@...nel.org>,
        Jason Kridner <jkridner@...gleboard.org>,
        Robert Nelson
	<robertcnelson@...gleboard.org>,
        Robert Nelson <robertcnelson@...il.com>,
        Ayush Singh <ayush@...gleboard.org>,
        Ayush Singh <ayushdevel1325@...il.com>
CC: <linux-arm-kernel@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Andrew Davis <afd@...com>
Subject: [PATCH RFC 1/3] arm64: dts: ti: k3-am625-beagleplay: Add Grove connector pinmux options

The Grove connector pins on BeaglePlay supports 3 different functions.
Describe these here.

Also move the default to be selected by a new Grove connector node.
As I2C is not the only possible function, do not enable main_i2c1.
It should only be enabled when a add-on board is connected that
makes use of it. That enabling should be done by the add-on board's
overlay.

Signed-off-by: Andrew Davis <afd@...com>
---
 .../arm64/boot/dts/ti/k3-am625-beagleplay.dts | 32 +++++++++++++++----
 1 file changed, 25 insertions(+), 7 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
index 70de288d728e4..004eb5c24a84c 100644
--- a/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
+++ b/arch/arm64/boot/dts/ti/k3-am625-beagleplay.dts
@@ -227,6 +227,10 @@ simple-audio-card,codec {
 		};
 	};
 
+	grove_connector0: grove-connector0 {
+		pinctrl-names = "default";
+		pinctrl-0 = <&grove_pins_default>;
+	};
 };
 
 &main_pmx0 {
@@ -270,6 +274,27 @@ AM62X_IOPAD(0x01ec, PIN_INPUT_PULLUP, 0) /* (A17) I2C1_SDA */
 		>;
 	};
 
+	grove_pins_digital: grove-digital-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x01e8, PIN_INPUT, 7) /* (B17) I2C1_SCL.GPIO1_28 */
+			AM62X_IOPAD(0x01ec, PIN_INPUT, 7) /* (A17) I2C1_SDA.GPIO1_29 */
+		>;
+	};
+
+	grove_pins_uart: grove-uart-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x01e8, PIN_INPUT, 1) /* (B17) I2C1_SCL.UART1_RXD */
+			AM62X_IOPAD(0x01ec, PIN_OUTPUT, 1) /* (A17) I2C1_SDA.UART1_TXD */
+		>;
+	};
+
+	grove_pins_i2c: grove-i2c-pins {
+		pinctrl-single,pins = <
+			AM62X_IOPAD(0x01e8, PIN_INPUT_PULLUP, 0) /* (B17) I2C1_SCL */
+			AM62X_IOPAD(0x01ec, PIN_INPUT_PULLUP, 0) /* (A17) I2C1_SDA */
+		>;
+	};
+
 	local_i2c_pins_default: local-i2c-default-pins {
 		bootph-all;
 		pinctrl-single,pins = <
@@ -753,13 +778,6 @@ ldo4_reg: ldo4 {
 	};
 };
 
-&main_i2c1 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&grove_pins_default>;
-	clock-frequency = <100000>;
-	status = "okay";
-};
-
 &main_i2c2 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c2_1v8_pins_default>;
-- 
2.39.2