![Chen-Yu Tsai](/assets/img/avatar_default.png)
On sun[45678]i, we have one cluster of identical cores sharing a clock, which is ideal for using cpufreq-dt. Register a platform device for cpufreq-dt. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
86 lines
2 KiB
C
86 lines
2 KiB
C
/*
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* Device Tree support for Allwinner A1X SoCs
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*
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* Copyright (C) 2012 Maxime Ripard
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*
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* Maxime Ripard <maxime.ripard@free-electrons.com>
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/clk-provider.h>
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#include <linux/clocksource.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <asm/mach/arch.h>
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static void __init sunxi_dt_cpufreq_init(void)
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{
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platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
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}
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static const char * const sunxi_board_dt_compat[] = {
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"allwinner,sun4i-a10",
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"allwinner,sun5i-a10s",
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"allwinner,sun5i-a13",
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NULL,
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};
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DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
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.dt_compat = sunxi_board_dt_compat,
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.init_late = sunxi_dt_cpufreq_init,
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MACHINE_END
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static const char * const sun6i_board_dt_compat[] = {
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"allwinner,sun6i-a31",
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"allwinner,sun6i-a31s",
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NULL,
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};
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extern void __init sun6i_reset_init(void);
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static void __init sun6i_timer_init(void)
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{
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of_clk_init(NULL);
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if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
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sun6i_reset_init();
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clocksource_of_init();
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}
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DT_MACHINE_START(SUN6I_DT, "Allwinner sun6i (A31) Family")
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.init_time = sun6i_timer_init,
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.dt_compat = sun6i_board_dt_compat,
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.init_late = sunxi_dt_cpufreq_init,
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MACHINE_END
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static const char * const sun7i_board_dt_compat[] = {
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"allwinner,sun7i-a20",
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NULL,
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};
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DT_MACHINE_START(SUN7I_DT, "Allwinner sun7i (A20) Family")
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.dt_compat = sun7i_board_dt_compat,
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.init_late = sunxi_dt_cpufreq_init,
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MACHINE_END
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static const char * const sun8i_board_dt_compat[] = {
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"allwinner,sun8i-a23",
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NULL,
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};
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DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i (A23) Family")
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.dt_compat = sun8i_board_dt_compat,
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.init_late = sunxi_dt_cpufreq_init,
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MACHINE_END
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static const char * const sun9i_board_dt_compat[] = {
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"allwinner,sun9i-a80",
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NULL,
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};
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DT_MACHINE_START(SUN9I_DT, "Allwinner sun9i Family")
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.dt_compat = sun9i_board_dt_compat,
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MACHINE_END
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