From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
	id S934478AbbENPie (ORCPT <rfc822;w@1wt.eu>);
	Thu, 14 May 2015 11:38:34 -0400
Received: from muru.com ([72.249.23.125]:50917 "EHLO muru.com"
	rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP
	id S934114AbbENPi2 (ORCPT <rfc822;linux-kernel@vger.kernel.org>);
	Thu, 14 May 2015 11:38:28 -0400
Date: Thu, 14 May 2015 08:38:22 -0700
From: Tony Lindgren <tony@atomide.com>
To: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Benoit Cousson <bcousson@baylibre.com>,
        Rob Herring <robherring2@gmail.com>,
        Grant Likely <grant.likely@secretlab.ca>,
        Matt Porter <mporter@konsulko.com>,
        Koen Kooi <koen@dominion.thruhere.net>,
        Robert Nelson <robertcnelson@gmail.com>,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
        Guenter Roeck <linux@roeck-us.net>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        devicetree@vger.kernel.org, linux-omap@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        Pantelis Antoniou <panto@antoniou-consulting.com>
Subject: Re: [PATCH] arm: dts: Beaglebone i2c definitions
Message-ID: <20150514153822.GJ15563@atomide.com>
References: <1431504274-32084-1-git-send-email-pantelis.antoniou@konsulko.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <1431504274-32084-1-git-send-email-pantelis.antoniou@konsulko.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

* Pantelis Antoniou <pantelis.antoniou@konsulko.com> [150513 01:05]:
> The beaglebone family of boards contain two I2C busses enabled.
> The first one with a baseboard identification EEPROM and a
> cape I2C bus.

This seems safe to apply as the i2c2 pins are listed in the cape
specification.

These pins could be used for other devices too.. But in that case
the cape would not follow the cape standard.

Regards,

Tony
 
> Signed-off-by: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
> ---
>  arch/arm/boot/dts/am335x-bone-common.dtsi | 66 +++++++++++++++++++++++++++++++
>  1 file changed, 66 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi b/arch/arm/boot/dts/am335x-bone-common.dtsi
> index c3255e0..236b7db 100644
> --- a/arch/arm/boot/dts/am335x-bone-common.dtsi
> +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
> @@ -81,6 +81,13 @@
>  		>;
>  	};
>  
> +	i2c2_pins: pinmux_i2c2_pins {
> +		pinctrl-single,pins = <
> +			0x178 (PIN_INPUT_PULLUP | MUX_MODE3)	/* uart1_ctsn.i2c2_sda */
> +			0x17c (PIN_INPUT_PULLUP | MUX_MODE3)	/* uart1_rtsn.i2c2_scl */
> +		>;
> +	};
> +
>  	uart0_pins: pinmux_uart0_pins {
>  		pinctrl-single,pins = <
>  			0x170 (PIN_INPUT_PULLUP | MUX_MODE0)	/* uart0_rxd.uart0_rxd */
> @@ -218,8 +225,67 @@
>  		reg = <0x24>;
>  	};
>  
> +	baseboard_eeprom: baseboard_eeprom@50 {
> +		compatible = "at,24c256";
> +		reg = <0x50>;
> +
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		baseboard_data: baseboard_data@0 {
> +			reg = <0 0x100>;
> +		};
> +	};
> +};
> +
> +&i2c2 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c2_pins>;
> +
> +	status = "okay";
> +	clock-frequency = <100000>;
> +
> +	cape_eeprom0: cape_eeprom0@54 {
> +		compatible = "at,24c256";
> +		reg = <0x54>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		cape0_data: cape_data@0 {
> +			reg = <0 0x100>;
> +		};
> +	};
> +
> +	cape_eeprom1: cape_eeprom1@55 {
> +		compatible = "at,24c256";
> +		reg = <0x55>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		cape1_data: cape_data@0 {
> +			reg = <0 0x100>;
> +		};
> +	};
> +
> +	cape_eeprom2: cape_eeprom2@56 {
> +		compatible = "at,24c256";
> +		reg = <0x56>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		cape2_data: cape_data@0 {
> +			reg = <0 0x100>;
> +		};
> +	};
> +
> +	cape_eeprom3: cape_eeprom3@57 {
> +		compatible = "at,24c256";
> +		reg = <0x57>;
> +		#address-cells = <1>;
> +		#size-cells = <1>;
> +		cape3_data: cape_data@0 {
> +			reg = <0 0x100>;
> +		};
> +	};
>  };
>  
> +
>  /include/ "tps65217.dtsi"
>  
>  &tps {
> -- 
> 1.7.12
>