pinctrl: imx: Support i.MX7D

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>

diff --git a/drivers/pinctrl/nxp/Kconfig b/drivers/pinctrl/nxp/Kconfig
index f1c9b929928dc83f9937e310954097fb585078f6..35640f0153ebc11d39b97cc1e9484ad4317f8306 100644 (file)
--- a/drivers/pinctrl/nxp/Kconfig
+++ b/drivers/pinctrl/nxp/Kconfig
@@ -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.

diff --git a/drivers/pinctrl/nxp/Makefile b/drivers/pinctrl/nxp/Makefile
index 7fd9850d1e09f5aa7d76c43ddf81d74555a3b9f8..0ee7f2fd5b9897c3ca6b76e807c972b2f6d2e1b3 100644 (file)
--- a/drivers/pinctrl/nxp/Makefile
+++ b/drivers/pinctrl/nxp/Makefile
@@ -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

diff --git a/drivers/pinctrl/nxp/pinctrl-imx7.c b/drivers/pinctrl/nxp/pinctrl-imx7.c
new file mode 100644 (file)
index 0000000..eeb7942
--- /dev/null
+++ b/drivers/pinctrl/nxp/pinctrl-imx7.c
@@ -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,
+};