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SubjectRe: [PATCH v2 3/3] ARM: dts: dra7-evm: Add extcon nodes for USB ID pin detection
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@ti.com>
> ---
> 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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