2 * Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
3 * Copyright 2011 Linaro Ltd.
5 * The code contained herein is licensed under the GNU General Public
6 * License. You may obtain a copy of the GNU General Public License
7 * Version 2 or later at the following locations:
9 * http://www.opensource.org/licenses/gpl-license.html
10 * http://www.gnu.org/copyleft/gpl.html
14 #include <linux/irq.h>
15 #include <linux/of_address.h>
16 #include <linux/of_irq.h>
17 #include <linux/of_platform.h>
18 #include <asm/mach/arch.h>
19 #include <asm/mach/time.h>
24 static void __init imx51_init_early(void)
26 mxc_set_cpu_type(MXC_CPU_MX51);
30 * The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
31 * the Freescale marketing division. However this did not remove the
32 * hardware from the chip which still needs to be configured for proper
35 #define MX51_MIPI_HSC_BASE 0x83fdc000
36 static void __init imx51_ipu_mipi_setup(void)
38 void __iomem *hsc_addr;
40 hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K);
43 /* setup MIPI module to legacy mode */
44 imx_writel(0xf00, hsc_addr);
46 /* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
47 imx_writel(imx_readl(hsc_addr + 0x800) | 0x30ff, hsc_addr + 0x800);
52 static void __init imx51_m4if_setup(void)
54 void __iomem *m4if_base;
55 struct device_node *np;
57 np = of_find_compatible_node(NULL, NULL, "fsl,imx51-m4if");
61 m4if_base = of_iomap(np, 0);
64 pr_err("Unable to map M4IF registers\n");
69 * Configure VPU and IPU with higher priorities
70 * in order to avoid artifacts during video playback
72 writel_relaxed(0x00000203, m4if_base + 0x40);
73 writel_relaxed(0x00000000, m4if_base + 0x44);
74 writel_relaxed(0x00120125, m4if_base + 0x9c);
75 writel_relaxed(0x001901A3, m4if_base + 0x48);
79 static void __init imx51_dt_init(void)
81 imx51_ipu_mipi_setup();
85 imx_aips_allow_unprivileged_access("fsl,imx51-aipstz");
88 static void __init imx51_init_late(void)
94 static const char * const imx51_dt_board_compat[] __initconst = {
99 DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)")
100 .init_early = imx51_init_early,
101 .init_machine = imx51_dt_init,
102 .init_late = imx51_init_late,
103 .dt_compat = imx51_dt_board_compat,