mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-07-26 04:49:42 +09:00
4e779ad2e5
Microblaze uses gpio which is connected to the system reset. Currently gpio subsystem wasn't used for it. Add gpio driver and change Microblaze reset logic to be done via gpio subsystem. There are various configurations which Microblaze can have that's why gpio_alloc/gpio_alloc_dual(for dual channel) function has been introduced and gpio can be allocated dynamically. Adding several gpios IP is also possible and supported. For listing gpio configuration please use "gpio status" command This patch also remove one compilation warning: microblaze-generic.c: In function 'do_reset': microblaze-generic.c:38:47: warning: operation on '*1073741824u' may be undefined [-Wsequence-point] Signed-off-by: Michal Simek <michal.simek@xilinx.com>
16 lines
358 B
C
16 lines
358 B
C
#ifndef _ASM_MICROBLAZE_GPIO_H_
|
|
#define _ASM_MICROBLAZE_GPIO_H_
|
|
|
|
#include <asm-generic/gpio.h>
|
|
|
|
/* Allocation functions */
|
|
extern int gpio_alloc_dual(u32 baseaddr, const char *name, u32 gpio_no0,
|
|
u32 gpio_no1);
|
|
extern int gpio_alloc(u32 baseaddr, const char *name, u32 gpio_no);
|
|
|
|
#define gpio_status() gpio_info()
|
|
extern void gpio_info(void);
|
|
|
|
#endif
|
|
|