[PATCH V2] powerpc: Add I2C bus multiplexer node for B4 and T4240QDS
From: Jia Hongtao <hidden>
Date: 2013-09-05 02:44:58
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
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 <redacted> --- 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@118000 { - eeprom@50 { - compatible = "at24,24c64"; - reg = <0x50>; - }; - eeprom@51 { - compatible = "at24,24c256"; - reg = <0x51>; - }; - eeprom@53 { - compatible = "at24,24c256"; - reg = <0x53>; - }; - eeprom@57 { - compatible = "at24,24c256"; - reg = <0x57>; - }; - rtc@68 { - compatible = "dallas,ds3232"; - reg = <0x68>; + pca9547@77 { + compatible = "philips,pca9547"; + reg = <0x77>; + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + eeprom@50 { + compatible = "at24,24c64"; + reg = <0x50>; + }; + eeprom@51 { + compatible = "at24,24c256"; + reg = <0x51>; + }; + eeprom@53 { + compatible = "at24,24c256"; + reg = <0x53>; + }; + eeprom@57 { + compatible = "at24,24c256"; + reg = <0x57>; + }; + rtc@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@118000 { - eeprom@51 { - compatible = "at24,24c256"; - reg = <0x51>; - }; - eeprom@52 { - compatible = "at24,24c256"; - reg = <0x52>; - }; - eeprom@53 { - compatible = "at24,24c256"; - reg = <0x53>; - }; - eeprom@54 { - compatible = "at24,24c256"; - reg = <0x54>; - }; - eeprom@55 { - compatible = "at24,24c256"; - reg = <0x55>; - }; - eeprom@56 { - compatible = "at24,24c256"; - reg = <0x56>; - }; - rtc@68 { - compatible = "dallas,ds3232"; - reg = <0x68>; - interrupts = <0x1 0x1 0 0>; + pca9547@77 { + compatible = "philips,pca9547"; + reg = <0x77>; + #address-cells = <1>; + #size-cells = <0>; + channel@0 { + #address-cells = <1>; + #size-cells = <0>; + reg = <0>; + eeprom@51 { + compatible = "at24,24c256"; + reg = <0x51>; + }; + eeprom@52 { + compatible = "at24,24c256"; + reg = <0x52>; + }; + eeprom@53 { + compatible = "at24,24c256"; + reg = <0x53>; + }; + eeprom@54 { + compatible = "at24,24c256"; + reg = <0x54>; + }; + eeprom@55 { + compatible = "at24,24c256"; + reg = <0x55>; + }; + eeprom@56 { + compatible = "at24,24c256"; + reg = <0x56>; + }; + rtc@68 { + compatible = "dallas,ds3232"; + reg = <0x68>; + interrupts = <0x1 0x1 0 0>; + }; + }; }; }; };
--
1.8.0