mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 07:34:06 +08:00
5e1d012851
Since pxa clocks were ported to the clock framework, an ordering issue
appears between clocks and clocksource initialization. As a consequence,
the pxa timer clock cannot be acquired in pxa_timer, and is disabled by
clock framework because it is "unused".
The ordering issue is that in the kernel boot sequence :
start_kernel()
...
time_init()
-> pxa_timer()
-> here the clocksource is initialized
...
rest_init()
kernel_init()
initcalls
-> here the clocks are initialized
In the current sequence, the clocks are initialized way after pxa_timer,
which cannot acquire the OSTIMER0 clock.
To solve this issue, the clocks initialization is moved to pxa_timer(),
so that clocks are initialized before clocksource for non device-tree.
For device-tree, the standard arm time_init() will take care of the
ordering.
Reviewed-by: Michael Turquette <mturquette@linaro.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/*
|
|
* linux/arch/arm/mach-pxa/generic.h
|
|
*
|
|
* Author: Nicolas Pitre
|
|
* Copyright: MontaVista Software Inc.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License version 2 as
|
|
* published by the Free Software Foundation.
|
|
*/
|
|
|
|
#include <linux/reboot.h>
|
|
|
|
struct irq_data;
|
|
|
|
extern unsigned int get_clk_frequency_khz(int info);
|
|
extern void __init pxa_dt_irq_init(int (*fn)(struct irq_data *,
|
|
unsigned int));
|
|
extern void __init pxa_map_io(void);
|
|
extern void pxa_timer_init(void);
|
|
|
|
#define SET_BANK(__nr,__start,__size) \
|
|
mi->bank[__nr].start = (__start), \
|
|
mi->bank[__nr].size = (__size)
|
|
|
|
#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x)
|
|
|
|
#define pxa25x_handle_irq icip_handle_irq
|
|
extern int __init pxa25x_clocks_init(void);
|
|
extern void __init pxa25x_init_irq(void);
|
|
extern void __init pxa25x_map_io(void);
|
|
extern void __init pxa26x_init_irq(void);
|
|
|
|
#define pxa27x_handle_irq ichp_handle_irq
|
|
extern int __init pxa27x_clocks_init(void);
|
|
extern void __init pxa27x_dt_init_irq(void);
|
|
extern unsigned pxa27x_get_clk_frequency_khz(int);
|
|
extern void __init pxa27x_init_irq(void);
|
|
extern void __init pxa27x_map_io(void);
|
|
|
|
#define pxa3xx_handle_irq ichp_handle_irq
|
|
extern void __init pxa3xx_dt_init_irq(void);
|
|
extern void __init pxa3xx_init_irq(void);
|
|
extern void __init pxa3xx_map_io(void);
|
|
|
|
extern struct syscore_ops pxa_irq_syscore_ops;
|
|
extern struct syscore_ops pxa2xx_mfp_syscore_ops;
|
|
extern struct syscore_ops pxa3xx_mfp_syscore_ops;
|
|
|
|
void __init pxa_set_ffuart_info(void *info);
|
|
void __init pxa_set_btuart_info(void *info);
|
|
void __init pxa_set_stuart_info(void *info);
|
|
void __init pxa_set_hwuart_info(void *info);
|
|
|
|
void pxa_restart(enum reboot_mode, const char *);
|
|
|
|
#if defined(CONFIG_PXA25x) || defined(CONFIG_PXA27x)
|
|
extern void pxa2xx_clear_reset_status(unsigned int);
|
|
#else
|
|
static inline void pxa2xx_clear_reset_status(unsigned int mask) {}
|
|
#endif
|
|
|
|
/*
|
|
* Once fully converted to the clock framework, all these functions should be
|
|
* removed, and replaced with a clk_get(NULL, "core").
|
|
*/
|
|
#ifdef CONFIG_PXA25x
|
|
extern unsigned pxa25x_get_clk_frequency_khz(int);
|
|
#else
|
|
#define pxa25x_get_clk_frequency_khz(x) (0)
|
|
#endif
|
|
|
|
#ifdef CONFIG_PXA27x
|
|
#else
|
|
#define pxa27x_get_clk_frequency_khz(x) (0)
|
|
#endif
|
|
|
|
#ifdef CONFIG_PXA3xx
|
|
extern unsigned pxa3xx_get_clk_frequency_khz(int);
|
|
#else
|
|
#define pxa3xx_get_clk_frequency_khz(x) (0)
|
|
#endif
|