imx: Add support for i.MX28 based XEA board
This patch introduces support for i.MX28 based XEA board.
This board supports DM/DTS in U-Boot proper as well as DM aware drivers
in SPL (u-boot.sb) by using OF_PLATDATA.
More detailed information regarding usage of it can be found in
./board/liebherr/xea/README file.
U-Boot SPL 2019.10-rc1-00233-g6aa549f05c (Aug 12 2019 - 09:23:36 +0200)
Trying to boot from MMC1
MMC0: Command 8 timeout (status 0xf0344020)
mmc_load_image_raw_sector: mmc block read error
U-Boot 2019.10-rc1-00233-g6aa549f05c (Aug 12 2019 - 09:23:36 +0200)
CPU: Freescale i.MX28 rev1.2 at 454 MHz
BOOT: SSP SPI #3, master, 3V3 NOR
Model: Liebherr (LWE) XEA i.MX28 Board
DRAM: 128 MiB
MMC: MXS MMC: 0
Loading Environment from SPI Flash... SF: Detected n25q128a13 with page size 256 Bytes, erase size 64 KiB, total 16 MiB
OK
In: serial
Out: serial
Err: serial
Net:
Warning: ethernet@800f0000 (eth0) using random MAC address - ce:e1:9e:46:f3:a2
eth0: ethernet@800f0000
Hit any key to stop autoboot: 0
Signed-off-by: Lukasz Majewski <lukma@denx.de>
diff --git a/board/liebherr/xea/xea.c b/board/liebherr/xea/xea.c
new file mode 100644
index 0000000..1d47f67
--- /dev/null
+++ b/board/liebherr/xea/xea.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * XEA iMX28 board
+ *
+ * Copyright (C) 2019 DENX Software Engineering
+ * Lukasz Majewski, DENX Software Engineering, lukma@denx.de
+ *
+ * Copyright (C) 2018 DENX Software Engineering
+ * Måns Rullgård, DENX Software Engineering, mans@mansr.com
+ *
+ * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
+ * on behalf of DENX Software Engineering GmbH
+ *
+ */
+
+#include <common.h>
+#include <asm/gpio.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux-mx28.h>
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <linux/mii.h>
+#include <miiphy.h>
+#include <netdev.h>
+#include <errno.h>
+#include <usb.h>
+#include <serial.h>
+
+#ifdef CONFIG_SPL_BUILD
+#include <spl.h>
+#endif
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/*
+ * Functions
+ */
+
+static void init_clocks(void)
+{
+ /* IO0 clock at 480MHz */
+ mxs_set_ioclk(MXC_IOCLK0, 480000);
+ /* IO1 clock at 480MHz */
+ mxs_set_ioclk(MXC_IOCLK1, 480000);
+
+ /* SSP0 clock at 96MHz */
+ mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
+ /* SSP2 clock at 160MHz */
+ mxs_set_sspclk(MXC_SSPCLK2, 160000, 0);
+ /* SSP3 clock at 96MHz */
+ mxs_set_sspclk(MXC_SSPCLK3, 96000, 0);
+}
+
+#ifdef CONFIG_SPL_BUILD
+void board_init_f(ulong arg)
+{
+ init_clocks();
+ preloader_console_init();
+}
+
+static int boot_tiva0, boot_tiva1;
+
+/* Check if TIVAs request booting via U-Boot proper */
+void spl_board_init(void)
+{
+ struct gpio_desc btiva0, btiva1;
+ int ret;
+
+ ret = dm_gpio_lookup_name("GPIO0_23", &btiva0);
+ if (ret)
+ printf("Cannot get GPIO0_23\n");
+
+ ret = dm_gpio_lookup_name("GPIO0_25", &btiva1);
+ if (ret)
+ printf("Cannot get GPIO0_25\n");
+
+ ret = dm_gpio_request(&btiva0, "boot-tiva0");
+ if (ret)
+ printf("Cannot request GPIO0_23\n");
+
+ ret = dm_gpio_request(&btiva1, "boot-tiva1");
+ if (ret)
+ printf("Cannot request GPIO0_25\n");
+
+ dm_gpio_set_dir_flags(&btiva0, GPIOD_IS_IN);
+ dm_gpio_set_dir_flags(&btiva1, GPIOD_IS_IN);
+
+ udelay(1000);
+
+ boot_tiva0 = dm_gpio_get_value(&btiva0);
+ boot_tiva1 = dm_gpio_get_value(&btiva1);
+}
+
+void board_boot_order(u32 *spl_boot_list)
+{
+ spl_boot_list[0] = BOOT_DEVICE_MMC1;
+ spl_boot_list[1] = BOOT_DEVICE_SPI;
+}
+
+int spl_start_uboot(void)
+{
+ /* break into full u-boot on 'c' */
+ if (serial_tstc() && serial_getc() == 'c')
+ return 1;
+
+ debug("%s: btiva0: %d btiva1: %d\n", __func__, boot_tiva0, boot_tiva1);
+ return !boot_tiva0 || !boot_tiva1;
+}
+#else
+
+int board_early_init_f(void)
+{
+ init_clocks();
+
+ return 0;
+}
+
+int board_init(void)
+{
+ struct gpio_desc phy_rst;
+ int ret;
+
+ /* Address of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+ cpu_eth_init(NULL);
+
+ /* PHY INT#/PWDN# */
+ ret = dm_gpio_lookup_name("GPIO4_13", &phy_rst);
+ if (ret) {
+ printf("Cannot get GPIO4_13\n");
+ return ret;
+ }
+
+ ret = dm_gpio_request(&phy_rst, "phy-rst");
+ if (ret) {
+ printf("Cannot request GPIO4_13\n");
+ return ret;
+ }
+
+ dm_gpio_set_dir_flags(&phy_rst, GPIOD_IS_IN);
+ udelay(1000);
+
+ return 0;
+}
+
+int dram_init(void)
+{
+ return mxs_dram_init();
+}
+
+#endif /* CONFIG_SPL_BUILD */