[PATCH V2] powerpc: Add I2C bus multiplexer node for B4 and T4240QDS

[Kumar Gala]

On Sep 4, 2013, at 9:41 PM, Jia Hongtao wrote:

> In both B4 and T4240QDS platform PCA9547 I2C bus multiplexer is used.
> The sub-nodes are also reorganized according to right I2C topology.
> 
> Signed-off-by: Jia Hongtao <hongtao.jia at freescale.com>
> ---
> V2 change log:
> Reorganized the sub-nodes under I2C multiplexer to represent right topology.
> 
> arch/powerpc/boot/dts/b4qds.dtsi   | 49 +++++++++++++++++-----------
> arch/powerpc/boot/dts/t4240qds.dts | 67 ++++++++++++++++++++++----------------
> 2 files changed, 69 insertions(+), 47 deletions(-)
> 
> diff --git a/arch/powerpc/boot/dts/b4qds.dtsi b/arch/powerpc/boot/dts/b4qds.dtsi
> index e6d2f8f..de8cb38 100644
> --- a/arch/powerpc/boot/dts/b4qds.dtsi
> +++ b/arch/powerpc/boot/dts/b4qds.dtsi
> @@ -120,25 +120,36 @@
> 		};
> 
> 		i2c at 118000 {
> -			eeprom at 50 {
> -				compatible = "at24,24c64";
> -				reg = <0x50>;
> -			};
> -			eeprom at 51 {
> -				compatible = "at24,24c256";
> -				reg = <0x51>;
> -			};
> -			eeprom at 53 {
> -				compatible = "at24,24c256";
> -				reg = <0x53>;
> -			};
> -			eeprom at 57 {
> -				compatible = "at24,24c256";
> -				reg = <0x57>;
> -			};
> -			rtc at 68 {
> -				compatible = "dallas,ds3232";
> -				reg = <0x68>;
> +			pca9547 at 77 {
> +				compatible = "philips,pca9547";

We seem to be using nxp instead of philips now.

> +				reg = <0x77>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				channel at 0 {

channel should probably be i2c

[same comments below]

> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0>;
> +					eeprom at 50 {
> +						compatible = "at24,24c64";
> +						reg = <0x50>;
> +					};
> +					eeprom at 51 {
> +						compatible = "at24,24c256";
> +						reg = <0x51>;
> +					};
> +					eeprom at 53 {
> +						compatible = "at24,24c256";
> +						reg = <0x53>;
> +					};
> +					eeprom at 57 {
> +						compatible = "at24,24c256";
> +						reg = <0x57>;
> +					};
> +					rtc at 68 {
> +						compatible = "dallas,ds3232";
> +						reg = <0x68>;
> +					};
> +				};
> 			};
> 		};
> 
> diff --git a/arch/powerpc/boot/dts/t4240qds.dts b/arch/powerpc/boot/dts/t4240qds.dts
> index 0555976..ae68595 100644
> --- a/arch/powerpc/boot/dts/t4240qds.dts
> +++ b/arch/powerpc/boot/dts/t4240qds.dts
> @@ -118,34 +118,45 @@
> 		};
> 
> 		i2c at 118000 {
> -			eeprom at 51 {
> -				compatible = "at24,24c256";
> -				reg = <0x51>;
> -			};
> -			eeprom at 52 {
> -				compatible = "at24,24c256";
> -				reg = <0x52>;
> -			};
> -			eeprom at 53 {
> -				compatible = "at24,24c256";
> -				reg = <0x53>;
> -			};
> -			eeprom at 54 {
> -				compatible = "at24,24c256";
> -				reg = <0x54>;
> -			};
> -			eeprom at 55 {
> -				compatible = "at24,24c256";
> -				reg = <0x55>;
> -			};
> -			eeprom at 56 {
> -				compatible = "at24,24c256";
> -				reg = <0x56>;
> -			};
> -			rtc at 68 {
> -				compatible = "dallas,ds3232";
> -				reg = <0x68>;
> -				interrupts = <0x1 0x1 0 0>;
> +			pca9547 at 77 {
> +				compatible = "philips,pca9547";
> +				reg = <0x77>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;
> +				channel at 0 {
> +					#address-cells = <1>;
> +					#size-cells = <0>;
> +					reg = <0>;
> +					eeprom at 51 {
> +						compatible = "at24,24c256";
> +						reg = <0x51>;
> +					};
> +					eeprom at 52 {
> +						compatible = "at24,24c256";
> +						reg = <0x52>;
> +					};
> +					eeprom at 53 {
> +						compatible = "at24,24c256";
> +						reg = <0x53>;
> +					};
> +					eeprom at 54 {
> +						compatible = "at24,24c256";
> +						reg = <0x54>;
> +					};
> +					eeprom at 55 {
> +						compatible = "at24,24c256";
> +						reg = <0x55>;
> +					};
> +					eeprom at 56 {
> +						compatible = "at24,24c256";
> +						reg = <0x56>;
> +					};
> +					rtc at 68 {
> +						compatible = "dallas,ds3232";
> +						reg = <0x68>;
> +						interrupts = <0x1 0x1 0 0>;
> +					};
> +				};
> 			};
> 		};
> 	};
> -- 
> 1.8.0
> 
> 
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