i.mx: add the initial support for freescale i.MX6Q processor

i.MX6Q is freescale quad core processors with ARM cortex_a9 complex.
This patch is to add the initial support for this processor.

Signed-off-by: Jason Liu <jason.hui@linaro.org>
Cc:Stefano Babic <sbabic@denx.de>

1 files changed, 71 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/mx6/iomux-v3.c b/arch/arm/cpu/armv7/mx6/iomux-v3.c
new file mode 100644
index 0000000000..8785532163
--- /dev/null
+++ b/arch/arm/cpu/armv7/mx6/iomux-v3.c
@@ -0,0 +1,71 @@
+/*
+ * Based on the iomux-v3.c from Linux kernel:
+ * Copyright (C) 2008 by Sascha Hauer <kernel@pengutronix.de>
+ * Copyright (C) 2009 by Jan Weitzel Phytec Messtechnik GmbH,
+ *                       <armlinux@phytec.de>
+ *
+ * Copyright (C) 2004-2011 Freescale Semiconductor, Inc.
+ *
+ * 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., 51 Franklin Street, Fifth Floor, Boston,
+ * MA 02110-1301, USA.
+ */
+#include <common.h>
+#include <asm/io.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/mx6x_pins.h>
+#include <asm/arch/iomux-v3.h>
+
+static void *base = (void *)IOMUXC_BASE_ADDR;
+
+/*
+ * configures a single pad in the iomuxer
+ */
+int imx_iomux_v3_setup_pad(iomux_v3_cfg_t pad)
+{
+	u32 mux_ctrl_ofs = (pad & MUX_CTRL_OFS_MASK) >> MUX_CTRL_OFS_SHIFT;
+	u32 mux_mode = (pad & MUX_MODE_MASK) >> MUX_MODE_SHIFT;
+	u32 sel_input_ofs =
+		(pad & MUX_SEL_INPUT_OFS_MASK) >> MUX_SEL_INPUT_OFS_SHIFT;
+	u32 sel_input =
+		(pad & MUX_SEL_INPUT_MASK) >> MUX_SEL_INPUT_SHIFT;
+	u32 pad_ctrl_ofs =
+		(pad & MUX_PAD_CTRL_OFS_MASK) >> MUX_PAD_CTRL_OFS_SHIFT;
+	u32 pad_ctrl = (pad & MUX_PAD_CTRL_MASK) >> MUX_PAD_CTRL_SHIFT;
+
+	if (mux_ctrl_ofs)
+		__raw_writel(mux_mode, base + mux_ctrl_ofs);
+
+	if (sel_input_ofs)
+		__raw_writel(sel_input, base + sel_input_ofs);
+
+	if (!(pad_ctrl & NO_PAD_CTRL) && pad_ctrl_ofs)
+		__raw_writel(pad_ctrl, base + pad_ctrl_ofs);
+
+	return 0;
+}
+
+int imx_iomux_v3_setup_multiple_pads(iomux_v3_cfg_t *pad_list, unsigned count)
+{
+	iomux_v3_cfg_t *p = pad_list;
+	int i;
+	int ret;
+
+	for (i = 0; i < count; i++) {
+		ret = imx_iomux_v3_setup_pad(*p);
+		if (ret)
+			return ret;
+		p++;
+	}
+	return 0;
+}