Commit de788001 authored by Christian Lamparter's avatar Christian Lamparter Committed by Florian Fainelli
Browse files

ARM: BCM53016: MR32: convert to Broadcom iProc I2C Driver 



replaces the bit-banged i2c-gpio provided i2c functionality
with the hardware in the SoC.

During review of the MR32, Florian Fainelli pointed out that the
SoC has a real I2C-controller. Furthermore, the connected pins
(SDA and SCL) would line up perfectly for use. Back then I couldn't
get it working though and I left it with i2c-gpio (which worked).

Now we know the reason: the interrupt was incorrectly specified.
(Hence, this patch depends on Florian Fainelli's
"ARM: dts: BCM5301X: Fix I2C controller interrupt" patch).

Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Rafał Miłecki <zajec5@gmail.com>
Cc: Matthew Hagan <mnhagan88@gmail.com>
Signed-off-by: default avatarChristian Lamparter <chunkeey@gmail.com>
Signed-off-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
parent 3d2d52a0

arch/arm/boot/dts/bcm53016-meraki-mr32.dts

+28 −34
Original line number Diff line number Diff line
@@ -84,40 +84,6 @@ 
			max-brightness = <255>;

		};

	};



	i2c {

		/*

		 * The platform provided I2C does not budge.

		 * This is a replacement until I can figure

		 * out what are the missing bits...

		 */



		compatible = "i2c-gpio";

		sda-gpios = <&chipcommon 5 GPIO_ACTIVE_HIGH>;

		scl-gpios = <&chipcommon 4 GPIO_ACTIVE_HIGH>;

		i2c-gpio,delay-us = <10>; /* close to 100 kHz */

		#address-cells = <1>;

		#size-cells = <0>;



		current_sense: ina219@45 {

			compatible = "ti,ina219";

			reg = <0x45>;

			shunt-resistor = <60000>; /* = 60 mOhms */

		};



		eeprom: eeprom@50 {

			compatible = "atmel,24c64";

			reg = <0x50>;

			pagesize = <32>;

			read-only;

			#address-cells = <1>;

			#size-cells = <1>;



			mac_address: mac-address@66 {

				reg = <0x66 0x6>;

			};

		};

	};

};



&uart0 {
@@ -228,3 +194,31 @@ 
		};

	};

};



&i2c0 {

	status = "okay";



	pinctrl-names = "default";

	pinctrl-0 = <&pinmux_i2c>;



	clock-frequency = <100000>;



	current_sense: ina219@45 {

		compatible = "ti,ina219";

		reg = <0x45>;

		shunt-resistor = <60000>; /* = 60 mOhms */

	};



	eeprom: eeprom@50 {

		compatible = "atmel,24c64";

		reg = <0x50>;

		pagesize = <32>;

		read-only;

		#address-cells = <1>;

		#size-cells = <1>;



		mac_address: mac-address@66 {

			reg = <0x66 0x6>;

		};

	};

};