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/*
* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
* Copyright 2011 Linaro Ltd.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include "common.h"
#include "hardware.h"
static void __init imx51_init_early(void)
{
mxc_set_cpu_type(MXC_CPU_MX51);
}
/*
* The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
* the Freescale marketing division. However this did not remove the
* hardware from the chip which still needs to be configured for proper
* IPU support.
*/
#define MX51_MIPI_HSC_BASE 0x83fdc000
static void __init imx51_ipu_mipi_setup(void)
{
void __iomem *hsc_addr;
hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K);
WARN_ON(!hsc_addr);
/* setup MIPI module to legacy mode */
imx_writel(0xf00, hsc_addr);
/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800);
iounmap(hsc_addr);
}
static void __init imx51_m4if_setup(void)
{
void __iomem *m4if_base;
struct device_node *np;
np = of_find_compatible_node(NULL, NULL, "fsl,imx51-m4if");
if (!np)
return;
m4if_base = of_iomap(np, 0);
if (!m4if_base) {
pr_err("Unable to map M4IF registers\n");
return;
}
/*
* Configure VPU and IPU with higher priorities
* in order to avoid artifacts during video playback
*/
writel_relaxed(0x00000203, m4if_base + 0x40);
writel_relaxed(0x00000000, m4if_base + 0x44);
writel_relaxed(0x00120125, m4if_base + 0x9c);
writel_relaxed(0x001901A3, m4if_base + 0x48);
iounmap(m4if_base);
}
static void __init imx51_dt_init(void)
{
imx51_ipu_mipi_setup();
imx_src_init();
imx51_m4if_setup();
imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");
}
static void __init imx51_init_late(void)
{
mx51_neon_fixup();
imx51_pm_init();
}
static const char * const imx51_dt_board_compat[] __initconst = {
"fsl,imx51",
NULL
};
DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)")
.init_early = imx51_init_early,
.init_machine = imx51_dt_init,
.init_late = imx51_init_late,
.dt_compat = imx51_dt_board_compat,
MACHINE_END
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