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authorAndrey Smirnov <andrew.smirnov@gmail.com>2016-11-30 12:07:39 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2017-01-18 08:58:04 +0100
commit6031c0e051ad478820395b2cc2ad74ccc2b84dca (patch)
tree51d33a8b4ef2824ab5f121ff55eecb806a59a94f /arch/arm/boards/zii-imx6q-rdu2/board.c
parentda4801f3e84ec1f66d8a02fd543c4502243234bc (diff)
downloadbarebox-6031c0e051ad478820395b2cc2ad74ccc2b84dca.tar.gz
ARM: imx: Add support for ZII RDU2 board
Add support for RDU2 board from Zodiac Inflight Innovations. Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com> Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/boards/zii-imx6q-rdu2/board.c')
-rw-r--r--arch/arm/boards/zii-imx6q-rdu2/board.c171
1 files changed, 171 insertions, 0 deletions
diff --git a/arch/arm/boards/zii-imx6q-rdu2/board.c b/arch/arm/boards/zii-imx6q-rdu2/board.c
new file mode 100644
index 0000000..ee04517
--- /dev/null
+++ b/arch/arm/boards/zii-imx6q-rdu2/board.c
@@ -0,0 +1,171 @@
+/*
+ * Copyright (C) 2016 Zodiac Inflight Innovation
+ * Author: Andrey Smirnov <andrew.smirnov@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <common.h>
+#include <init.h>
+#include <environment.h>
+#include <mach/imx6-regs.h>
+#include <gpio.h>
+#include <asm/armlinux.h>
+#include <generated/mach-types.h>
+#include <partition.h>
+#include <linux/phy.h>
+#include <asm/io.h>
+#include <asm/mmu.h>
+#include <mach/generic.h>
+#include <linux/sizes.h>
+#include <net.h>
+#include <mach/imx6.h>
+#include <mach/devices-imx6.h>
+#include <mach/iomux-mx6.h>
+#include <spi/spi.h>
+#include <mach/spi.h>
+#include <mach/usb.h>
+#include <mach/bbu.h>
+
+#define RDU2_DAC1_RESET IMX_GPIO_NR(1, 0)
+#define RDU2_DAC2_RESET IMX_GPIO_NR(1, 2)
+#define RDU2_RST_TOUCH IMX_GPIO_NR(1, 7)
+#define RDU2_NFC_RESET IMX_GPIO_NR(1, 17)
+#define RDU2_HPA1_SDn IMX_GPIO_NR(1, 4)
+#define RDU2_HPA2_SDn IMX_GPIO_NR(1, 5)
+
+static const struct gpio rdu2_reset_gpios[] = {
+ {
+ .gpio = RDU2_DAC1_RESET,
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "dac1-reset",
+ },
+ {
+ .gpio = RDU2_DAC2_RESET,
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "dac2-reset",
+ },
+ {
+ .gpio = RDU2_RST_TOUCH,
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "rst-touch#",
+ },
+ {
+ .gpio = RDU2_NFC_RESET,
+ .flags = GPIOF_OUT_INIT_HIGH,
+ .label = "nfc-reset",
+ },
+ {
+ .gpio = RDU2_HPA1_SDn,
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "hpa1-sd-n",
+ },
+ {
+ .gpio = RDU2_HPA2_SDn,
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "hpa2n-sd-n",
+ },
+};
+
+static int rdu2_reset_audio_touchscreen_nfc(void)
+{
+ int ret;
+
+ if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") &&
+ !of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
+ return 0;
+
+ ret = gpio_request_array(rdu2_reset_gpios,
+ ARRAY_SIZE(rdu2_reset_gpios));
+ if (ret) {
+ pr_err("Failed to request RDU2 reset gpios: %s\n",
+ strerror(-ret));
+ return ret;
+ }
+
+ mdelay(100);
+
+ gpio_direction_output(RDU2_DAC1_RESET, 1);
+ gpio_direction_output(RDU2_DAC2_RESET, 1);
+ gpio_direction_output(RDU2_RST_TOUCH, 1);
+ gpio_direction_output(RDU2_NFC_RESET, 0);
+ gpio_direction_output(RDU2_HPA1_SDn, 1);
+ gpio_direction_output(RDU2_HPA2_SDn, 1);
+
+ mdelay(100);
+
+ return 0;
+}
+/*
+ * When this function is called "hog" pingroup in device tree needs to
+ * be already initialized
+ */
+late_initcall(rdu2_reset_audio_touchscreen_nfc);
+
+static const struct gpio rdu2_front_panel_usb_gpios[] = {
+ {
+ .gpio = IMX_GPIO_NR(3, 19),
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "usb-emulation",
+ },
+ {
+ .gpio = IMX_GPIO_NR(3, 20),
+ .flags = GPIOF_OUT_INIT_HIGH,
+ .label = "usb-mode1",
+ },
+ {
+ .gpio = IMX_GPIO_NR(3, 22),
+ .flags = GPIOF_OUT_INIT_LOW,
+ .label = "usb-pwr-ctrl-enn",
+ },
+ {
+ .gpio = IMX_GPIO_NR(3, 23),
+ .flags = GPIOF_OUT_INIT_HIGH,
+ .label = "usb-mode2",
+ },
+};
+
+static int rdu2_enable_front_panel_usb(void)
+{
+ int ret;
+
+ if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") &&
+ !of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
+ return 0;
+
+ ret = gpio_request_array(rdu2_front_panel_usb_gpios,
+ ARRAY_SIZE(rdu2_front_panel_usb_gpios));
+ if (ret) {
+ pr_err("Failed to request RDU2 front panel USB gpios: %s\n",
+ strerror(-ret));
+
+ }
+
+ return ret;
+}
+late_initcall(rdu2_enable_front_panel_usb);
+
+static int rdu2_devices_init(void)
+{
+ if (!of_machine_is_compatible("zii,imx6q-zii-rdu2") &&
+ !of_machine_is_compatible("zii,imx6qp-zii-rdu2"))
+ return 0;
+
+ barebox_set_hostname("rdu2");
+
+ imx6_bbu_internal_spi_i2c_register_handler("SPI", "/dev/m25p0.barebox",
+ BBU_HANDLER_FLAG_DEFAULT);
+
+ imx6_bbu_internal_mmc_register_handler("eMMC", "/dev/mmc3", 0);
+
+ return 0;
+}
+device_initcall(rdu2_devices_init);