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pinctrl: imx1-core populate subdevices

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

Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Markus Pargmann 2013-11-11 19:19:47 +01:00 committed by Linus Walleij
parent b9f2f2ecce
commit 31d610f196
2 changed files with 29 additions and 0 deletions
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22
Documentation/devicetree/bindings/pinctrl/fsl,imx27-pinctrl.txt
View File

@ -52,12 +52,25 @@ Required properties for pin configuration node:
CONFIG can be 0 or 1, meaning Pullup disable/enable. 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: Example:
iomuxc: iomuxc@10015000 { iomuxc: iomuxc@10015000 {
compatible = "fsl,imx27-iomuxc"; compatible = "fsl,imx27-iomuxc";
reg = <0x10015000 0x600>; reg = <0x10015000 0x600>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
gpio1: gpio@10015000 {
...
};
...
uart { uart {
pinctrl_uart1: uart-1 { pinctrl_uart1: uart-1 {
@ -83,6 +96,15 @@ The above example using macros:
iomuxc: iomuxc@10015000 { iomuxc: iomuxc@10015000 {
compatible = "fsl,imx27-iomuxc"; compatible = "fsl,imx27-iomuxc";
reg = <0x10015000 0x600>; reg = <0x10015000 0x600>;
#address-cells = <1>;
#size-cells = <1>;
ranges;
gpio1: gpio@10015000 {
...
};
...
uart { uart {
pinctrl_uart1: uart-1 { pinctrl_uart1: uart-1 {

7
drivers/pinctrl/pinctrl-imx1-core.c
View File

@ -638,6 +638,13 @@ int imx1_pinctrl_core_probe(struct platform_device *pdev,
return -EINVAL; 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"); dev_info(&pdev->dev, "initialized IMX pinctrl driver\n");
return 0; return 0;