Commit 0160817d authored by Linus Walleij's avatar Linus Walleij Committed by Sebastian Reichel

power: reset: augment versatile driver for integrator

Augment the Versatile reset driver to also handle the core
module reset sequence used on the Integrator/AP and
Integrator/CP.

Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Sebastian Reichel <sre@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarSebastian Reichel <sre@kernel.org>
parent 06efe0e5
......@@ -15,14 +15,21 @@
#include <linux/of.h>
#include <asm/system_misc.h>
#define INTEGRATOR_HDR_CTRL_OFFSET 0x0C
#define INTEGRATOR_HDR_LOCK_OFFSET 0x14
#define INTEGRATOR_CM_CTRL_RESET (1 << 3)
#define REALVIEW_SYS_LOCK_OFFSET 0x20
#define REALVIEW_SYS_LOCK_VAL 0xA05F
#define REALVIEW_SYS_RESETCTL_OFFSET 0x40
/* Magic unlocking token used on all Versatile boards */
#define VERSATILE_LOCK_VAL 0xA05F
/*
* We detect the different syscon types from the compatible strings.
*/
enum versatile_reboot {
INTEGRATOR_REBOOT_CM,
REALVIEW_REBOOT_EB,
REALVIEW_REBOOT_PB1176,
REALVIEW_REBOOT_PB11MP,
......@@ -35,6 +42,10 @@ static struct regmap *syscon_regmap;
static enum versatile_reboot versatile_reboot_type;
static const struct of_device_id versatile_reboot_of_match[] = {
{
.compatible = "arm,core-module-integrator",
.data = (void *)INTEGRATOR_REBOOT_CM
},
{
.compatible = "arm,realview-eb-syscon",
.data = (void *)REALVIEW_REBOOT_EB,
......@@ -55,31 +66,46 @@ static const struct of_device_id versatile_reboot_of_match[] = {
.compatible = "arm,realview-pbx-syscon",
.data = (void *)REALVIEW_REBOOT_PBX,
},
{},
};
static void versatile_reboot(enum reboot_mode mode, const char *cmd)
{
/* Unlock the reset register */
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
REALVIEW_SYS_LOCK_VAL);
/* Then hit reset on the different machines */
switch (versatile_reboot_type) {
case INTEGRATOR_REBOOT_CM:
regmap_write(syscon_regmap, INTEGRATOR_HDR_LOCK_OFFSET,
VERSATILE_LOCK_VAL);
regmap_update_bits(syscon_regmap,
INTEGRATOR_HDR_CTRL_OFFSET,
INTEGRATOR_CM_CTRL_RESET,
INTEGRATOR_CM_CTRL_RESET);
break;
case REALVIEW_REBOOT_EB:
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
VERSATILE_LOCK_VAL);
regmap_write(syscon_regmap,
REALVIEW_SYS_RESETCTL_OFFSET, 0x0008);
break;
case REALVIEW_REBOOT_PB1176:
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
VERSATILE_LOCK_VAL);
regmap_write(syscon_regmap,
REALVIEW_SYS_RESETCTL_OFFSET, 0x0100);
break;
case REALVIEW_REBOOT_PB11MP:
case REALVIEW_REBOOT_PBA8:
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
VERSATILE_LOCK_VAL);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x0000);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x0004);
break;
case REALVIEW_REBOOT_PBX:
regmap_write(syscon_regmap, REALVIEW_SYS_LOCK_OFFSET,
VERSATILE_LOCK_VAL);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
0x00f0);
regmap_write(syscon_regmap, REALVIEW_SYS_RESETCTL_OFFSET,
......
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