arm: Tegra2: Move clk/mux init to board_early_init_f, add GPIO init

Signed-off-by: Tom Warren <twarren@nvidia.com>

1 files changed, 52 insertions, 0 deletions

diff --git a/board/nvidia/seaboard/seaboard.c b/board/nvidia/seaboard/seaboard.c
new file mode 100644
index 0000000000..4b9a8f33e8
--- /dev/null
+++ b/board/nvidia/seaboard/seaboard.c
@@ -0,0 +1,52 @@
+/*
+ *  (C) Copyright 2010,2011
+ *  NVIDIA Corporation <www.nvidia.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/tegra2.h>
+#include <asm/arch/gpio.h>
+
+/*
+ * Routine: gpio_config_uart
+ * Description: Force GPIO_PI3 low on Seaboard so UART4 works.
+ */
+void gpio_config_uart(void)
+{
+	int gp = GPIO_PI3;
+	struct gpio_ctlr *gpio = (struct gpio_ctlr *)NV_PA_GPIO_BASE;
+	struct gpio_ctlr_bank *bank = &gpio->gpio_bank[GPIO_BANK(gp)];
+	u32 val;
+
+	/* Enable UART via GPIO_PI3 (port 8, bit 3) so serial console works */
+	val = readl(&bank->gpio_config[GPIO_PORT(gp)]);
+	val |= 1 << GPIO_BIT(gp);
+	writel(val, &bank->gpio_config[GPIO_PORT(gp)]);
+
+	val = readl(&bank->gpio_out[GPIO_PORT(gp)]);
+	val &= ~(1 << GPIO_BIT(gp));
+	writel(val, &bank->gpio_out[GPIO_PORT(gp)]);
+
+	val = readl(&bank->gpio_dir_out[GPIO_PORT(gp)]);
+	val |= 1 << GPIO_BIT(gp);
+	writel(val, &bank->gpio_dir_out[GPIO_PORT(gp)]);
+}