Skip to content

Commit

Permalink
mach-ux500: voltage domain regulators for DB8500
Browse files Browse the repository at this point in the history 
The DB8500 has ePOD:s (electronic power domains) which are possible
to switch on/off to deactivate silicon blocks on the DB8500 SoC
by cutting their power without retention. We model these as simple
regulators with one bit on/off settings.

Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
Signed-off-by: Sundar Iyer <sundar.iyer@stericsson.com>
Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Virupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com>
Signed-off-by: Martin Persson <martin.persson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
  • Loading branch information
Bengt Jonsson authored and Linus Walleij committed May 24, 2011
1 parent f0e733f commit 1032fbf
Show file tree
Hide file tree
Showing 6 changed files with 791 additions and 0 deletions.
1 change: 1 addition & 0 deletions arch/arm/mach-ux500/Kconfig
View file
Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@ config UX500_SOC_DB5500
config UX500_SOC_DB8500
bool "DB8500"
select MFD_DB8500_PRCMU
select REGULATOR_DB8500_PRCMU

endmenu

Expand Down
179 changes: 179 additions & 0 deletions drivers/mfd/db8500-prcmu.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -28,6 +28,8 @@
#include <linux/uaccess.h>
#include <linux/mfd/core.h>
#include <linux/mfd/db8500-prcmu.h>
#include <linux/regulator/db8500-prcmu.h>
#include <linux/regulator/machine.h>
#include <mach/hardware.h>
#include <mach/irqs.h>
#include <mach/db8500-regs.h>
Expand Down Expand Up @@ -1824,9 +1826,186 @@ void __init prcmu_early_init(void)
}
}

/*
* Power domain switches (ePODs) modeled as regulators for the DB8500 SoC
*/
static struct regulator_consumer_supply db8500_vape_consumers[] = {
REGULATOR_SUPPLY("v-ape", NULL),
REGULATOR_SUPPLY("v-i2c", "nmk-i2c.0"),
REGULATOR_SUPPLY("v-i2c", "nmk-i2c.1"),
REGULATOR_SUPPLY("v-i2c", "nmk-i2c.2"),
REGULATOR_SUPPLY("v-i2c", "nmk-i2c.3"),
/* "v-mmc" changed to "vcore" in the mainline kernel */
REGULATOR_SUPPLY("vcore", "sdi0"),
REGULATOR_SUPPLY("vcore", "sdi1"),
REGULATOR_SUPPLY("vcore", "sdi2"),
REGULATOR_SUPPLY("vcore", "sdi3"),
REGULATOR_SUPPLY("vcore", "sdi4"),
REGULATOR_SUPPLY("v-dma", "dma40.0"),
REGULATOR_SUPPLY("v-ape", "ab8500-usb.0"),
/* "v-uart" changed to "vcore" in the mainline kernel */
REGULATOR_SUPPLY("vcore", "uart0"),
REGULATOR_SUPPLY("vcore", "uart1"),
REGULATOR_SUPPLY("vcore", "uart2"),
REGULATOR_SUPPLY("v-ape", "nmk-ske-keypad.0"),
};

static struct regulator_consumer_supply db8500_vsmps2_consumers[] = {
/* CG2900 and CW1200 power to off-chip peripherals */
REGULATOR_SUPPLY("gbf_1v8", "cg2900-uart.0"),
REGULATOR_SUPPLY("wlan_1v8", "cw1200.0"),
REGULATOR_SUPPLY("musb_1v8", "ab8500-usb.0"),
/* AV8100 regulator */
REGULATOR_SUPPLY("hdmi_1v8", "0-0070"),
};

static struct regulator_consumer_supply db8500_b2r2_mcde_consumers[] = {
REGULATOR_SUPPLY("vsupply", "b2r2.0"),
REGULATOR_SUPPLY("vsupply", "mcde.0"),
};

static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = {
[DB8500_REGULATOR_VAPE] = {
.constraints = {
.name = "db8500-vape",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.consumer_supplies = db8500_vape_consumers,
.num_consumer_supplies = ARRAY_SIZE(db8500_vape_consumers),
},
[DB8500_REGULATOR_VARM] = {
.constraints = {
.name = "db8500-varm",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_VMODEM] = {
.constraints = {
.name = "db8500-vmodem",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_VPLL] = {
.constraints = {
.name = "db8500-vpll",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_VSMPS1] = {
.constraints = {
.name = "db8500-vsmps1",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_VSMPS2] = {
.constraints = {
.name = "db8500-vsmps2",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.consumer_supplies = db8500_vsmps2_consumers,
.num_consumer_supplies = ARRAY_SIZE(db8500_vsmps2_consumers),
},
[DB8500_REGULATOR_VSMPS3] = {
.constraints = {
.name = "db8500-vsmps3",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_VRF1] = {
.constraints = {
.name = "db8500-vrf1",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SVAMMDSP] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-sva-mmdsp",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SVAMMDSPRET] = {
.constraints = {
/* "ret" means "retention" */
.name = "db8500-sva-mmdsp-ret",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SVAPIPE] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-sva-pipe",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SIAMMDSP] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-sia-mmdsp",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SIAMMDSPRET] = {
.constraints = {
.name = "db8500-sia-mmdsp-ret",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SIAPIPE] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-sia-pipe",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_SGA] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-sga",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_B2R2_MCDE] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-b2r2-mcde",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
.consumer_supplies = db8500_b2r2_mcde_consumers,
.num_consumer_supplies = ARRAY_SIZE(db8500_b2r2_mcde_consumers),
},
[DB8500_REGULATOR_SWITCH_ESRAM12] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-esram12",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_ESRAM12RET] = {
.constraints = {
.name = "db8500-esram12-ret",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_ESRAM34] = {
.supply_regulator = "db8500-vape",
.constraints = {
.name = "db8500-esram34",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
[DB8500_REGULATOR_SWITCH_ESRAM34RET] = {
.constraints = {
.name = "db8500-esram34-ret",
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
},
},
};

static struct mfd_cell db8500_prcmu_devs[] = {
{
.name = "db8500-prcmu-regulators",
.mfd_data = &db8500_regulators,
},
{
.name = "cpufreq-u8500",
Expand Down
7 changes: 7 additions & 0 deletions drivers/regulator/Kconfig
View file
Original file line number Diff line number Diff line change
Expand Up @@ -274,6 +274,13 @@ config REGULATOR_AB8500
This driver supports the regulators found on the ST-Ericsson mixed
signal AB8500 PMIC

config REGULATOR_DB8500_PRCMU
bool "ST-Ericsson DB8500 Voltage Domain Regulators"
depends on MFD_DB8500_PRCMU
help
This driver supports the voltage domain regulators controlled by the
DB8500 PRCMU

config REGULATOR_TPS6586X
tristate "TI TPS6586X Power regulators"
depends on MFD_TPS6586X
Expand Down
1 change: 1 addition & 0 deletions drivers/regulator/Makefile
View file
Original file line number Diff line number Diff line change
Expand Up @@ -41,5 +41,6 @@ obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o
obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o
obj-$(CONFIG_REGULATOR_ISL6271A) += isl6271a-regulator.o
obj-$(CONFIG_REGULATOR_AB8500) += ab8500.o
obj-$(CONFIG_REGULATOR_DB8500_PRCMU) += db8500-prcmu.o

ccflags-$(CONFIG_REGULATOR_DEBUG) += -DDEBUG
Loading

0 comments on commit 1032fbf

Please sign in to comment.