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bbcf071969
The naming convention of this driver was always under the scanner, people complained that it should have a more generic name than cpu0, as it manages all CPUs that are sharing clock lines. Also, in future it will be modified to support any number of clusters with separate clock/voltage lines. Lets rename it to 'cpufreq_dt' from 'cpufreq_cpu0'. Tested-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
82 lines
2 KiB
C
82 lines
2 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc. All Rights Reserved.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/io.h>
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#include <linux/irq.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/time.h>
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#include "common.h"
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#include "hardware.h"
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static void __init imx51_init_early(void)
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{
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mxc_set_cpu_type(MXC_CPU_MX51);
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}
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/*
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* The MIPI HSC unit has been removed from the i.MX51 Reference Manual by
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* the Freescale marketing division. However this did not remove the
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* hardware from the chip which still needs to be configured for proper
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* IPU support.
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*/
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#define MX51_MIPI_HSC_BASE 0x83fdc000
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static void __init imx51_ipu_mipi_setup(void)
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{
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void __iomem *hsc_addr;
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hsc_addr = ioremap(MX51_MIPI_HSC_BASE, SZ_16K);
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WARN_ON(!hsc_addr);
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/* setup MIPI module to legacy mode */
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__raw_writel(0xf00, hsc_addr);
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/* CSI mode: reserved; DI control mode: legacy (from Freescale BSP) */
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__raw_writel(__raw_readl(hsc_addr + 0x800) | 0x30ff,
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hsc_addr + 0x800);
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iounmap(hsc_addr);
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}
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static void __init imx51_dt_init(void)
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{
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struct platform_device_info devinfo = { .name = "cpufreq-dt", };
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mxc_arch_reset_init_dt();
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imx51_ipu_mipi_setup();
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imx_src_init();
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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platform_device_register_full(&devinfo);
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}
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static void __init imx51_init_late(void)
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{
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mx51_neon_fixup();
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imx51_pm_init();
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}
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static const char * const imx51_dt_board_compat[] __initconst = {
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"fsl,imx51",
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NULL
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};
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DT_MACHINE_START(IMX51_DT, "Freescale i.MX51 (Device Tree Support)")
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.init_early = imx51_init_early,
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.init_irq = tzic_init_irq,
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.init_machine = imx51_dt_init,
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.init_late = imx51_init_late,
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.dt_compat = imx51_dt_board_compat,
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.restart = mxc_restart,
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MACHINE_END
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