mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 13:11:45 +00:00
f91b7c62e0
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
2.0 KiB
C
86 lines
2.0 KiB
C
/*
|
|
* Device Tree support for Allwinner A1X SoCs
|
|
*
|
|
* Copyright (C) 2012 Maxime Ripard
|
|
*
|
|
* Maxime Ripard <maxime.ripard@free-electrons.com>
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public
|
|
* License version 2. This program is licensed "as is" without any
|
|
* warranty of any kind, whether express or implied.
|
|
*/
|
|
|
|
#include <linux/clk-provider.h>
|
|
#include <linux/clocksource.h>
|
|
#include <linux/init.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/mach/arch.h>
|
|
|
|
static void __init sunxi_dt_cpufreq_init(void)
|
|
{
|
|
platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
|
|
}
|
|
|
|
static const char * const sunxi_board_dt_compat[] = {
|
|
"allwinner,sun4i-a10",
|
|
"allwinner,sun5i-a10s",
|
|
"allwinner,sun5i-a13",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(SUNXI_DT, "Allwinner A1X (Device Tree)")
|
|
.dt_compat = sunxi_board_dt_compat,
|
|
.init_late = sunxi_dt_cpufreq_init,
|
|
MACHINE_END
|
|
|
|
static const char * const sun6i_board_dt_compat[] = {
|
|
"allwinner,sun6i-a31",
|
|
"allwinner,sun6i-a31s",
|
|
NULL,
|
|
};
|
|
|
|
extern void __init sun6i_reset_init(void);
|
|
static void __init sun6i_timer_init(void)
|
|
{
|
|
of_clk_init(NULL);
|
|
if (IS_ENABLED(CONFIG_RESET_CONTROLLER))
|
|
sun6i_reset_init();
|
|
clocksource_of_init();
|
|
}
|
|
|
|
DT_MACHINE_START(SUN6I_DT, "Allwinner sun6i (A31) Family")
|
|
.init_time = sun6i_timer_init,
|
|
.dt_compat = sun6i_board_dt_compat,
|
|
.init_late = sunxi_dt_cpufreq_init,
|
|
MACHINE_END
|
|
|
|
static const char * const sun7i_board_dt_compat[] = {
|
|
"allwinner,sun7i-a20",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(SUN7I_DT, "Allwinner sun7i (A20) Family")
|
|
.dt_compat = sun7i_board_dt_compat,
|
|
.init_late = sunxi_dt_cpufreq_init,
|
|
MACHINE_END
|
|
|
|
static const char * const sun8i_board_dt_compat[] = {
|
|
"allwinner,sun8i-a23",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(SUN8I_DT, "Allwinner sun8i (A23) Family")
|
|
.dt_compat = sun8i_board_dt_compat,
|
|
.init_late = sunxi_dt_cpufreq_init,
|
|
MACHINE_END
|
|
|
|
static const char * const sun9i_board_dt_compat[] = {
|
|
"allwinner,sun9i-a80",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(SUN9I_DT, "Allwinner sun9i Family")
|
|
.dt_compat = sun9i_board_dt_compat,
|
|
MACHINE_END
|