// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright 2011 Freescale Semiconductor , Inc . All Rights Reserved .
* Copyright 2011 Linaro Ltd .
*/
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <asm /mach/arch.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 0 x83fdc000
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(0 xf00, hsc_addr);
/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
imx_writel(imx_readl(hsc_addr + 0 x800) | 0 x30ff, hsc_addr + 0 x800);
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 );
of_node_put(np);
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(0 x00000203, m4if_base + 0 x40);
writel_relaxed(0 x00000000, m4if_base + 0 x44);
writel_relaxed(0 x00120125, m4if_base + 0 x9c);
writel_relaxed(0 x001901A3, m4if_base + 0 x48);
iounmap(m4if_base);
}
static void __init imx51_dt_init(void )
{
imx51_ipu_mipi_setup();
imx_src_init();
imx51_m4if_setup();
imx5_pmu_init();
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
Messung V0.5 in Prozent C=94 H=93 G=93
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-09-29)
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