arm, omap3: Add support for TechNexion modules

Add support for TechNexion TAO3530 SoM

This patch has been posted quite a long time ago. I ported it to
the latest mainline U-Boot version. With some additional cleanup
and enhancements.

Signed-off-by: Tapani Utriainen <tapani@technexion.com>
CC: Sandeep Paulraj <s-paulraj@ti.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Thorsten Eisbein <thorsten.eisbein@head-acoustics.de>
Cc: Tom Rini <trini@ti.com>

1 files changed, 170 insertions, 0 deletions

diff --git a/board/technexion/tao3530/tao3530.c b/board/technexion/tao3530/tao3530.c
new file mode 100644
index 0000000000..0668c256f3
--- /dev/null
+++ b/board/technexion/tao3530/tao3530.c
@@ -0,0 +1,170 @@
+/*
+ * Maintainer :
+ *      Tapani Utriainen <linuxfae@technexion.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+#include <common.h>
+#include <netdev.h>
+#include <twl4030.h>
+#include <asm/io.h>
+#include <asm/arch/mmc_host_def.h>
+#include <asm/arch/mem.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/arch/gpio.h>
+#include <asm/gpio.h>
+#include <asm/mach-types.h>
+
+#include <usb.h>
+#include <asm/ehci-omap.h>
+
+#include "tao3530.h"
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int tao3530_revision(void)
+{
+	int ret = 0;
+
+	/* char *label argument is unused in gpio_request() */
+	ret = gpio_request(65, "");
+	if (ret) {
+		puts("Error: GPIO 65 not available\n");
+		goto out;
+	}
+	MUX_VAL(CP(GPMC_WAIT3),	(IEN  | PTU | EN  | M4));
+
+	ret = gpio_request(1, "");
+	if (ret) {
+		puts("Error: GPIO 1 not available\n");
+		goto out2;
+	}
+	MUX_VAL(CP(SYS_CLKREQ), (IEN  | PTU | EN | M4));
+
+	ret = gpio_direction_input(65);
+	if (ret) {
+		puts("Error: GPIO 65 not available for input\n");
+		goto out3;
+	}
+
+	ret =  gpio_direction_input(1);
+	if (ret) {
+		puts("Error: GPIO 1 not available for input\n");
+		goto out3;
+	}
+
+	ret = gpio_get_value(65) << 1 | gpio_get_value(1);
+
+out3:
+	MUX_VAL(CP(SYS_CLKREQ), (IEN  | PTU | EN | M0));
+	gpio_free(1);
+out2:
+	MUX_VAL(CP(GPMC_WAIT3),	(IEN  | PTU | EN  | M0));
+	gpio_free(65);
+out:
+
+	return ret;
+}
+
+/*
+ * Routine: board_init
+ * Description: Early hardware init.
+ */
+int board_init(void)
+{
+	gpmc_init(); /* in SRAM or SDRAM, finish GPMC */
+	/* board id for Linux */
+	gd->bd->bi_arch_number = MACH_TYPE_OMAP3_TAO3530;
+	/* boot param addr */
+	gd->bd->bi_boot_params = (OMAP34XX_SDRC_CS0 + 0x100);
+
+	return 0;
+}
+
+/*
+ * Routine: misc_init_r
+ * Description: Configure board specific parts
+ */
+int misc_init_r(void)
+{
+	struct gpio *gpio5_base = (struct gpio *)OMAP34XX_GPIO5_BASE;
+	struct gpio *gpio6_base = (struct gpio *)OMAP34XX_GPIO6_BASE;
+
+	twl4030_power_init();
+	twl4030_led_init(TWL4030_LED_LEDEN_LEDAON | TWL4030_LED_LEDEN_LEDBON);
+
+	/* Configure GPIOs to output */
+	/* GPIO23 */
+	writel(~(GPIO10 | GPIO8 | GPIO2 | GPIO1), &gpio6_base->oe);
+	writel(~(GPIO31 | GPIO30 | GPIO22 | GPIO21 |
+		 GPIO15 | GPIO14 | GPIO13 | GPIO12), &gpio5_base->oe);
+
+	/* Set GPIOs */
+	writel(GPIO10 | GPIO8 | GPIO2 | GPIO1,
+	       &gpio6_base->setdataout);
+	writel(GPIO31 | GPIO30 | GPIO29 | GPIO28 | GPIO22 | GPIO21 |
+	       GPIO15 | GPIO14 | GPIO13 | GPIO12, &gpio5_base->setdataout);
+
+	dieid_num_r();
+
+	/* Set memory size environment variable, depending on revision */
+	switch (tao3530_revision()) {
+	case 0x2:  /* Rev C1 -- 256MB */
+		 setenv("mem_size", "mem=256M");
+		 break;
+	case 0x3: /* Rev A2/B2 -- 128MB */
+		 setenv("mem_size", "mem=128M");
+		 break;
+	default:
+		 printf("Warning: Unknown TAO3530 rev, setting mem=128M\n");
+	}
+
+	return 0;
+}
+
+/*
+ * Routine: set_muxconf_regs
+ * Description: Setting up the configuration Mux registers specific to the
+ *		hardware. Many pins need to be moved from protect to primary
+ *		mode.
+ */
+void set_muxconf_regs(void)
+{
+	MUX_TAO3530();
+}
+
+#ifdef CONFIG_GENERIC_MMC
+int board_mmc_init(bd_t *bis)
+{
+	omap_mmc_init(0, 0, 0, -1, -1);
+
+	return 0;
+}
+#endif
+
+#if defined(CONFIG_USB_EHCI) && !defined(CONFIG_SPL_BUILD)
+/* Call usb_stop() before starting the kernel */
+void show_boot_progress(int val)
+{
+	if (val == BOOTSTAGE_ID_RUN_OS)
+		usb_stop();
+}
+
+static struct omap_usbhs_board_data usbhs_bdata = {
+	.port_mode[0] = OMAP_USBHS_PORT_MODE_UNUSED,
+	.port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
+	.port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED
+};
+
+int ehci_hcd_init(int index, enum usb_init_type init,
+		  struct ehci_hccr **hccr, struct ehci_hcor **hcor)
+{
+	return omap_ehci_hcd_init(index, &usbhs_bdata, hccr, hcor);
+}
+
+int ehci_hcd_stop(int index)
+{
+	return omap_ehci_hcd_stop();
+}
+#endif /* CONFIG_USB_EHCI */