UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

ARM: bcm21664: Remove reset code 

The kona reset driver now provides this functionality.

Signed-off-by: Chris Brand <chris.brand@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
This commit is contained in:
Chris Brand 2016-05-11 14:36:18 -07:00 committed by Florian Fainelli
parent 1a695a905c
commit 406c8f6c99
1 changed files with 0 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
arch/arm/mach-bcm/board_bcm21664.c
View File

@ -11,53 +11,12 @@
* GNU General Public License for more details.
*/
#include <linux/of_address.h>
#include <linux/of_platform.h>
#include <linux/io.h>
#include <asm/mach/arch.h>
#include "kona_l2_cache.h"
#define RSTMGR_DT_STRING "brcm,bcm21664-resetmgr"
#define RSTMGR_REG_WR_ACCESS_OFFSET 0
#define RSTMGR_REG_CHIP_SOFT_RST_OFFSET 4
#define RSTMGR_WR_PASSWORD 0xa5a5
#define RSTMGR_WR_PASSWORD_SHIFT 8
#define RSTMGR_WR_ACCESS_ENABLE 1
static void bcm21664_restart(enum reboot_mode mode, const char *cmd)
{
void __iomem *base;
struct device_node *resetmgr;
resetmgr = of_find_compatible_node(NULL, NULL, RSTMGR_DT_STRING);
if (!resetmgr) {
pr_emerg("Couldn't find " RSTMGR_DT_STRING "\n");
return;
}
base = of_iomap(resetmgr, 0);
if (!base) {
pr_emerg("Couldn't map " RSTMGR_DT_STRING "\n");
return;
}
/*
* A soft reset is triggered by writing a 0 to bit 0 of the soft reset
* register. To write to that register we must first write the password
* and the enable bit in the write access enable register.
*/
writel((RSTMGR_WR_PASSWORD << RSTMGR_WR_PASSWORD_SHIFT) |
RSTMGR_WR_ACCESS_ENABLE,
base + RSTMGR_REG_WR_ACCESS_OFFSET);
writel(0, base + RSTMGR_REG_CHIP_SOFT_RST_OFFSET);
/* Wait for reset */
while (1);
}
static void __init bcm21664_init(void)
{
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
@ -71,6 +30,5 @@ static const char * const bcm21664_dt_compat[] = {
DT_MACHINE_START(BCM21664_DT, "BCM21664 Broadcom Application Processor")
.init_machine = bcm21664_init,
.restart = bcm21664_restart,
.dt_compat = bcm21664_dt_compat,
MACHINE_END