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Commit 31d610f1 authored by Markus Pargmann's avatar Markus Pargmann Committed by Linus Walleij
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pinctrl: imx1-core populate subdevices 



Support gpio devicetree subnodes to allow a more detailed DT hardware
description.

Signed-off-by: default avatarMarkus Pargmann <mpa@pengutronix.de>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent b9f2f2ec

Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt

+22 −0
Original line number Diff line number Diff line
@@ -52,12 +52,25 @@ Required properties for pin configuration node: 
  CONFIG can be 0 or 1, meaning Pullup disable/enable.





The iomux controller has gpio child nodes which are embedded in the iomux

control registers. They have to be defined as child nodes of the iomux device

node. If gpio subnodes are defined "#address-cells", "#size-cells" and "ranges"

properties for the iomux device node are required.



Example:



iomuxc: iomuxc@10015000 {

	compatible = "fsl,imx27-iomuxc";

	reg = <0x10015000 0x600>;

	#address-cells = <1>;

	#size-cells = <1>;

	ranges;



	gpio1: gpio@10015000 {

		...

	};



	...



	uart {

		pinctrl_uart1: uart-1 {
@@ -83,6 +96,15 @@ The above example using macros: 
iomuxc: iomuxc@10015000 {

	compatible = "fsl,imx27-iomuxc";

	reg = <0x10015000 0x600>;

	#address-cells = <1>;

	#size-cells = <1>;

	ranges;



	gpio1: gpio@10015000 {

		...

	};



	...



	uart {

		pinctrl_uart1: uart-1 {

drivers/pinctrl/pinctrl-imx1-core.c

+7 −0
Original line number Diff line number Diff line
@@ -638,6 +638,13 @@ int imx1_pinctrl_core_probe(struct platform_device *pdev, 
		return -EINVAL;

	}



	ret = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);

	if (ret) {

		pinctrl_unregister(ipctl->pctl);

		dev_err(&pdev->dev, "Failed to populate subdevices\n");

		return ret;

	}



	dev_info(&pdev->dev, "initialized IMX pinctrl driver\n");



	return 0;