Commit a08305b0 authored by Phil Elwell's avatar Phil Elwell
Browse files

overlays: Add baudrate parameter to i2c3-i2c6 



The overlays for enabling the new BCM2711 I2C interfaces were lacking
the means to configure the baud/clock rate.

Also explictly set the default pins, rather than relying on the values
in the base DTB.

Signed-off-by: default avatarPhil Elwell <phil@raspberrypi.org>
parent 41c722d8

arch/arm/boot/dts/overlays/README

+8 −0
Original line number Diff line number Diff line
@@ -1221,6 +1221,8 @@ Info: Enable the i2c3 bus 
Load:   dtoverlay=i2c3,<param>

Params: pins_2_3                Use GPIOs 2 and 3

        pins_4_5                Use GPIOs 4 and 5 (default)

        baudrate                Set the baudrate for the interface (default

                                "100000")





Name:   i2c4
@@ -1228,6 +1230,8 @@ Info: Enable the i2c4 bus 
Load:   dtoverlay=i2c4,<param>

Params: pins_6_7                Use GPIOs 6 and 7

        pins_8_9                Use GPIOs 8 and 9 (default)

        baudrate                Set the baudrate for the interface (default

                                "100000")





Name:   i2c5
@@ -1235,6 +1239,8 @@ Info: Enable the i2c5 bus 
Load:   dtoverlay=i2c5,<param>

Params: pins_10_11              Use GPIOs 10 and 11

        pins_12_13              Use GPIOs 12 and 13 (default)

        baudrate                Set the baudrate for the interface (default

                                "100000")





Name:   i2c6
@@ -1242,6 +1248,8 @@ Info: Enable the i2c6 bus 
Load:   dtoverlay=i2c6,<param>

Params: pins_0_1                Use GPIOs 0 and 1

        pins_22_23              Use GPIOs 22 and 23 (default)

        baudrate                Set the baudrate for the interface (default

                                "100000")





Name:   i2s-gpio28-31

arch/arm/boot/dts/overlays/i2c3-overlay.dts

+12 −3
Original line number Diff line number Diff line
@@ -6,10 +6,11 @@ 


	fragment@0 {

		target = <&i2c3>;

		__overlay__ {

		frag0: __overlay__ {

			status = "okay";

			pinctrl-names = "default";

			pinctrl-0 = <&i2c3_pins>;

			clock-frequency = <100000>;

		};

	};
@@ -20,8 +21,16 @@ 
		};

	};



	fragment@2 {

		target = <&i2c3_pins>;

		__overlay__ {

			brcm,pins = <4 5>;

		};

	};



	__overrides__ {

		pins_2_3 = <0>,"=1";

		pins_4_5 = <0>,"!1";

		pins_2_3 = <0>,"=1!2";

		pins_4_5 = <0>,"!1=2";

		baudrate = <&frag0>, "clock-frequency:0";

	};

};

arch/arm/boot/dts/overlays/i2c4-overlay.dts

+12 −3
Original line number Diff line number Diff line
@@ -6,10 +6,11 @@ 


	fragment@0 {

		target = <&i2c4>;

		__overlay__ {

		frag0: __overlay__ {

			status = "okay";

			pinctrl-names = "default";

			pinctrl-0 = <&i2c4_pins>;

			clock-frequency = <100000>;

		};

	};
@@ -20,8 +21,16 @@ 
		};

	};



	fragment@2 {

		target = <&i2c4_pins>;

		__overlay__ {

			brcm,pins = <8 9>;

		};

	};



	__overrides__ {

		pins_6_7 = <0>,"=1";

		pins_8_9 = <0>,"!1";

		pins_6_7 = <0>,"=1!2";

		pins_8_9 = <0>,"!1=2";

		baudrate = <&frag0>, "clock-frequency:0";

	};

};

arch/arm/boot/dts/overlays/i2c5-overlay.dts

+12 −3
Original line number Diff line number Diff line
@@ -6,10 +6,11 @@ 


	fragment@0 {

		target = <&i2c5>;

		__overlay__ {

		frag0: __overlay__ {

			status = "okay";

			pinctrl-names = "default";

			pinctrl-0 = <&i2c5_pins>;

			clock-frequency = <100000>;

		};

	};
@@ -20,8 +21,16 @@ 
		};

	};



	fragment@2 {

		target = <&i2c5_pins>;

		__overlay__ {

			brcm,pins = <12 13>;

		};

	};



	__overrides__ {

		pins_10_11 = <0>,"=1";

		pins_12_13 = <0>,"!1";

		pins_10_11 = <0>,"=1!2";

		pins_12_13 = <0>,"!1=2";

		baudrate = <&frag0>, "clock-frequency:0";

	};

};

arch/arm/boot/dts/overlays/i2c6-overlay.dts

+12 −3
Original line number Diff line number Diff line
@@ -6,10 +6,11 @@ 


	fragment@0 {

		target = <&i2c6>;

		__overlay__ {

		frag0: __overlay__ {

			status = "okay";

			pinctrl-names = "default";

			pinctrl-0 = <&i2c6_pins>;

			clock-frequency = <100000>;

		};

	};
@@ -20,8 +21,16 @@ 
		};

	};



	fragment@2 {

		target = <&i2c6_pins>;

		__overlay__ {

			brcm,pins = <22 23>;

		};

	};



	__overrides__ {

		pins_0_1 = <0>,"=1";

		pins_22_23 = <0>,"!1";

		pins_0_1 = <0>,"=1!2";

		pins_22_23 = <0>,"!1=2";

		baudrate = <&frag0>, "clock-frequency:0";

	};

};