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

source/bootloader/u-boot-2020.01/board/technologic/ts4600/ts4600.c

@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2016 Savoir-faire Linux Inc.
+ *
+ * Author: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
+ *
+ * Based on work from TS7680 code by:
+ *   Kris Bahnsen <kris@embeddedarm.com>
+ *   Mark Featherston <mark@embeddedarm.com>
+ *   https://github.com/embeddedarm/u-boot/tree/master/board/technologic/ts7680
+ *
+ * Derived from MX28EVK code by
+ *   Freescale Semiconductor, Inc.
+ */
+
+#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>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int board_early_init_f(void)
+{
+	/* IO0 clock at 480MHz */
+	mxs_set_ioclk(MXC_IOCLK0, 480000);
+	/* IO1 clock at 480MHz */
+	mxs_set_ioclk(MXC_IOCLK1, 480000);
+
+	/* SSP0 clocks at 96MHz */
+	mxs_set_sspclk(MXC_SSPCLK0, 96000, 0);
+
+	return 0;
+}
+
+int dram_init(void)
+{
+	return mxs_dram_init();
+}
+
+int board_init(void)
+{
+	/* Adress of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM_1 + 0x100;
+
+	return 0;
+}
+
+#ifdef CONFIG_CMD_MMC
+static int ts4600_mmc_cd(int id)
+{
+	return 1;
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	int ret;
+
+	mxs_iomux_setup_pad(MX28_PAD_PWM3__GPIO_3_28);
+
+	/* Power-on SD */
+	gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 1);
+	udelay(1000);
+	gpio_direction_output(MX28_PAD_PWM3__GPIO_3_28, 0);
+
+	/* SD card */
+	ret = mxsmmc_initialize(bis, 0, NULL, ts4600_mmc_cd);
+	if(ret != 0) {
+		printf("SD controller initialized with %d\n", ret);
+	}
+
+	return ret;
+}
+#endif
+
+int checkboard(void)
+{
+	puts("Board: TS4600\n");
+
+	return 0;
+}