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pinctrl: imx: Support i.MX7D

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Introudce i.MX7 pinctrl driver support.
For now only i.MX7D supported.
There are two iomux controllers in i.MX7D, iomuxc and iomuxc_lpsr.
To iomuxc_lpsr, ZERO_OFFSET_VALID is set, means offset of mux_reg
and conf_reg can begin at 0.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Peng Fan 2016-02-03 10:06:08 +08:00 committed by Stefano Babic
parent 745df68d36
commit c4068dfb31
3 changed files with 56 additions and 0 deletions
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14
drivers/pinctrl/nxp/Kconfig
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@ -14,3 +14,17 @@ config PINCTRL_IMX6
configuration. This driver is different from the linux one,
this is a simple implementation, only parses the 'fsl,pins'
property and configure related registers.
config PINCTRL_IMX7
bool "IMX7 pinctrl driver"
depends on ARCH_MX7 && PINCTRL_FULL
select DEVRES
select PINCTRL_IMX
help
Say Y here to enable the imx7 pinctrl driver
This provides a simple pinctrl driver for i.MX7 SoC familiy,
i.MX7D. This feature depends on device tree
configuration. This driver is different from the linux one,
this is a simple implementation, only parses the 'fsl,pins'
property and configure related registers.

1
drivers/pinctrl/nxp/Makefile
View File

@ -1,2 +1,3 @@
obj-$(CONFIG_PINCTRL_IMX) += pinctrl-imx.o
obj-$(CONFIG_PINCTRL_IMX6) += pinctrl-imx6.o
obj-$(CONFIG_PINCTRL_IMX7) += pinctrl-imx7.o

41
drivers/pinctrl/nxp/pinctrl-imx7.c Normal file
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@ -0,0 +1,41 @@
/*
* Copyright (C) 2016 Peng Fan <van.freenix@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <dm/device.h>
#include <dm/pinctrl.h>
#include "pinctrl-imx.h"
static struct imx_pinctrl_soc_info imx7_pinctrl_soc_info;
static struct imx_pinctrl_soc_info imx7_lpsr_pinctrl_soc_info = {
.flags = ZERO_OFFSET_VALID,
};
static int imx7_pinctrl_probe(struct udevice *dev)
{
struct imx_pinctrl_soc_info *info =
(struct imx_pinctrl_soc_info *)dev_get_driver_data(dev);
return imx_pinctrl_probe(dev, info);
}
static const struct udevice_id imx7_pinctrl_match[] = {
{ .compatible = "fsl,imx7d-iomuxc", .data = (ulong)&imx7_pinctrl_soc_info },
{ .compatible = "fsl,imx7d-iomuxc-lpsr", .data = (ulong)&imx7_lpsr_pinctrl_soc_info },
{ /* sentinel */ }
};
U_BOOT_DRIVER(imx7_pinctrl) = {
.name = "imx7-pinctrl",
.id = UCLASS_PINCTRL,
.of_match = of_match_ptr(imx7_pinctrl_match),
.probe = imx7_pinctrl_probe,
.remove = imx_pinctrl_remove,
.priv_auto_alloc_size = sizeof(struct imx_pinctrl_priv),
.ops = &imx_pinctrl_ops,
.flags = DM_FLAG_PRE_RELOC,
};