Re: [PATCH v2 3/3] ARM: dts: dra7-evm: Add extcon nodes for USB ID pin detection

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Hello.

On 08/28/2013 05:59 PM, George Cherian wrote:

Add
	-extcon nodes for USB ID pin detection.
	-i2c nodes.
	-pcf nodes to which USB ID pin is connected.

Signed-off-by: George Cherian <george.cherian@xxxxxx>
---
  arch/arm/boot/dts/dra7-evm.dts | 52 +++++++++++++++++++++++++++++++++++++++++-
  1 file changed, 51 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index acd3c09..9ee97c0 100644
--- a/arch/arm/boot/dts/dra7-evm.dts
+++ b/arch/arm/boot/dts/dra7-evm.dts
@@ -17,6 +17,17 @@
  		device_type = "memory";
  		reg = <0x80000000 0x60000000>; /* 1536 MB */
  	};
+
+	extcon1: gpio_usbvid_extcon1 {
+		compatible = "ti,gpio-usb-id";
+		gpios = <&pcf_21 1 0>;
+	};
+
+	extcon2: gpio_usbvid_extcon2 {
+		compatible = "ti,gpio-usb-id";
+		gpios = <&pcf_21 2 0>;
+	};
+
  };

  &dra7_pmx_core {
@@ -33,10 +44,49 @@
          };
  };

+&i2c1 {
+	clock-frequency = <400000>;
+
+	pcf_20: pcf8575@20 {

Acorrding to the ePAPR spec [1], "the name of a node should be somewhat generic, reflecting the function of the device and not its precise programming model. If appropriate, the name should be one of the following choices:

[...]
- gpio
[...]"

+		compatible = "ti,pcf8575";
+		reg = <0x20>;
+		n_latch = <0x4000>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&gpio6>;
+		interrupts = <11 2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
+
+	pcf_21: pcf8575@21 {

   Same comment here.

+		compatible = "ti,pcf8575";
+		reg = <0x21>;
+		n_latch = <0x1408>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		interrupt-parent = <&pcf_20>;
+		interrupts = <14 2>;
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
+
+};
+

[1] http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf

WBR, Sergei

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