GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2016 Stefan Roese <sr@denx.de>
+ */
+
+#include <common.h>
+#include <init.h>
+#include <nuvoton_nct6102d.h>
+#include <asm/gpio.h>
+#include <asm/ibmpc.h>
+#include <asm/pnp_def.h>
+
+int board_early_init_f(void)
+{
+#ifdef CONFIG_INTERNAL_UART
+	/* Disable the legacy UART which is enabled per default */
+	nct6102d_uarta_disable();
+#else
+	/*
+	 * The FSP enables the BayTrail internal legacy UART (again).
+	 * Disable it again, so that the Nuvoton one can be used.
+	 */
+	setup_internal_uart(0);
+#endif
+
+	/* Disable the watchdog which is enabled per default */
+	nct6102d_wdt_disable();
+
+	return 0;
+}
+
+int board_late_init(void)
+{
+	struct gpio_desc desc;
+	int ret;
+
+	ret = dm_gpio_lookup_name("F10", &desc);
+	if (ret)
+		debug("gpio ret=%d\n", ret);
+	ret = dm_gpio_request(&desc, "xhci_hub_reset");
+	if (ret)
+		debug("gpio_request ret=%d\n", ret);
+	ret = dm_gpio_set_dir_flags(&desc, GPIOD_IS_OUT);
+	if (ret)
+		debug("gpio dir ret=%d\n", ret);
+
+	/* Pull xHCI hub reset to low (active low) */
+	dm_gpio_set_value(&desc, 0);
+
+	/* Wait at least 5 ms, so lets choose 10 to be safe */
+	mdelay(10);
+
+	/* Pull xHCI hub reset to high (active low) */
+	dm_gpio_set_value(&desc, 1);
+
+	return 0;
+}