RE: [RFC 1/2] OMAP3+: voltage / oscillator parameter segregation

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> -----Original Message-----
> From: Tero Kristo [mailto:t-kristo@xxxxxx]
> Sent: Wednesday, August 03, 2011 8:59 PM
> To: linux-omap@xxxxxxxxxxxxxxx
> Cc: Vishwanath Sripathy
> Subject: [RFC 1/2] OMAP3+: voltage / oscillator parameter
> segregation
>
> This patch separates board specific voltage and oscillator ramp /
> setup
> times from the core code. Things changed:
>
> - on/sleep/ret/off voltage setup moved from common twl code to
>   VC / VP data (oppxxxx_data.c files)
> - added board support for vdd ramp up / down times
> - added board support for oscillator setup time declaration
>
> Todo: split patch into more easily manageable parts.
>
> Applies on top of pm/wip/voltdm branch, based on work done by
> Vishwanath
> Sripathy.
>
> Signed-off-by: Tero Kristo <t-kristo@xxxxxx>
> Cc: Vishwanath Sripathy <vishwanath.bs@xxxxxx>
> ---
>  arch/arm/mach-omap2/omap_opp_data.h           |   15 +++
>  arch/arm/mach-omap2/omap_twl.c                |   59 ----------
>  arch/arm/mach-omap2/opp3xxx_data.c            |   62 ++++++++++
>  arch/arm/mach-omap2/opp4xxx_data.c            |   47 ++++++++
>  arch/arm/mach-omap2/prcm.c                    |   11 ++
>  arch/arm/mach-omap2/prm2xxx_3xxx.c            |    6 +
>  arch/arm/mach-omap2/prm2xxx_3xxx.h            |    1 +
>  arch/arm/mach-omap2/prm44xx.c                 |    7 +
>  arch/arm/mach-omap2/prm44xx.h                 |    1 +
>  arch/arm/mach-omap2/vc.c                      |  153
> +++++++++++++++++++++----
>  arch/arm/mach-omap2/vc.h                      |    1 -
>  arch/arm/mach-omap2/voltage.c                 |   22 ++++
>  arch/arm/mach-omap2/voltage.h                 |   55 ++++++++-
>  arch/arm/mach-omap2/voltagedomains3xxx_data.c |    8 ++
>  arch/arm/mach-omap2/voltagedomains44xx_data.c |    8 ++
>  arch/arm/mach-omap2/vp.c                      |    4 +-
>  arch/arm/plat-omap/include/plat/prcm.h        |    7 +
>  17 files changed, 377 insertions(+), 90 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/omap_opp_data.h b/arch/arm/mach-
> omap2/omap_opp_data.h
> index c784c12..b5fe711 100644
> --- a/arch/arm/mach-omap2/omap_opp_data.h
> +++ b/arch/arm/mach-omap2/omap_opp_data.h
> @@ -86,11 +86,26 @@ extern int __init omap_init_opp_table(struct
> omap_opp_def *opp_def,
>
>  extern struct omap_volt_data omap34xx_vddmpu_volt_data[];
>  extern struct omap_volt_data omap34xx_vddcore_volt_data[];
> +extern struct omap_vp_param omap34xx_mpu_vp_data;
> +extern struct omap_vp_param omap34xx_core_vp_data;
> +extern struct omap_vc_param omap34xx_mpu_vc_data;
> +extern struct omap_vc_param omap34xx_core_vc_data;
> +
>  extern struct omap_volt_data omap36xx_vddmpu_volt_data[];
>  extern struct omap_volt_data omap36xx_vddcore_volt_data[];
> +extern struct omap_vp_param omap36xx_mpu_vp_data;
> +extern struct omap_vp_param omap36xx_core_vp_data;
> +extern struct omap_vc_param omap36xx_mpu_vc_data;
> +extern struct omap_vc_param omap36xx_core_vc_data;
>
>  extern struct omap_volt_data omap44xx_vdd_mpu_volt_data[];
>  extern struct omap_volt_data omap44xx_vdd_iva_volt_data[];
>  extern struct omap_volt_data omap44xx_vdd_core_volt_data[];
> +extern struct omap_vp_param omap44xx_mpu_vp_data;
> +extern struct omap_vp_param omap44xx_iva_vp_data;
> +extern struct omap_vp_param omap44xx_core_vp_data;
> +extern struct omap_vc_param omap44xx_mpu_vc_data;
> +extern struct omap_vc_param omap44xx_iva_vc_data;
> +extern struct omap_vc_param omap44xx_core_vc_data;
>
>  #endif		/* __ARCH_ARM_MACH_OMAP2_OMAP_OPP_DATA_H */
> diff --git a/arch/arm/mach-omap2/omap_twl.c b/arch/arm/mach-
> omap2/omap_twl.c
> index f515a1a..d239792 100644
> --- a/arch/arm/mach-omap2/omap_twl.c
> +++ b/arch/arm/mach-omap2/omap_twl.c
> @@ -30,16 +30,6 @@
>  #define OMAP3_VP_VSTEPMAX_VSTEPMAX	0x04
>  #define OMAP3_VP_VLIMITTO_TIMEOUT_US	200
>
> -#define OMAP3430_VP1_VLIMITTO_VDDMIN	0x14
> -#define OMAP3430_VP1_VLIMITTO_VDDMAX	0x42
> -#define OMAP3430_VP2_VLIMITTO_VDDMIN	0x18
> -#define OMAP3430_VP2_VLIMITTO_VDDMAX	0x2c
> -
> -#define OMAP3630_VP1_VLIMITTO_VDDMIN	0x18
> -#define OMAP3630_VP1_VLIMITTO_VDDMAX	0x3c
> -#define OMAP3630_VP2_VLIMITTO_VDDMIN	0x18
> -#define OMAP3630_VP2_VLIMITTO_VDDMAX	0x30
> -
>  #define OMAP4_SRI2C_SLAVE_ADDR		0x12
>  #define OMAP4_VDD_MPU_SR_VOLT_REG	0x55
>  #define OMAP4_VDD_MPU_SR_CMD_REG	0x56
> @@ -53,13 +43,6 @@
>  #define OMAP4_VP_VSTEPMAX_VSTEPMAX	0x04
>  #define OMAP4_VP_VLIMITTO_TIMEOUT_US	200
>
> -#define OMAP4_VP_MPU_VLIMITTO_VDDMIN	0xA
> -#define OMAP4_VP_MPU_VLIMITTO_VDDMAX	0x39
> -#define OMAP4_VP_IVA_VLIMITTO_VDDMIN	0xA
> -#define OMAP4_VP_IVA_VLIMITTO_VDDMAX	0x2D
> -#define OMAP4_VP_CORE_VLIMITTO_VDDMIN	0xA
> -#define OMAP4_VP_CORE_VLIMITTO_VDDMAX	0x28
> -
>  static bool is_offset_valid;
>  static u8 smps_offset;
>  /*
> @@ -158,16 +141,9 @@ static u8 twl6030_uv_to_vsel(unsigned long uv)
>  static struct omap_voltdm_pmic omap3_mpu_pmic = {
>  	.slew_rate		= 4000,
>  	.step_size		= 12500,
> -	.on_volt		= 1200000,
> -	.onlp_volt		= 1000000,
> -	.ret_volt		= 975000,
> -	.off_volt		= 600000,
> -	.volt_setup_time	= 0xfff,
>  	.vp_erroroffset		= OMAP3_VP_CONFIG_ERROROFFSET,
>  	.vp_vstepmin		= OMAP3_VP_VSTEPMIN_VSTEPMIN,
>  	.vp_vstepmax		= OMAP3_VP_VSTEPMAX_VSTEPMAX,
> -	.vp_vddmin		= OMAP3430_VP1_VLIMITTO_VDDMIN,
> -	.vp_vddmax		= OMAP3430_VP1_VLIMITTO_VDDMAX,
Each of PMIC has it's own min and max allowed voltage. So you probably
would need some parameter to keep that info. Also VP shold be configured
which falls within OMAP Limit and PMIC Limit.
>  	.vp_timeout_us		= OMAP3_VP_VLIMITTO_TIMEOUT_US,
>  	.i2c_slave_addr		= OMAP3_SRI2C_SLAVE_ADDR,
>  	.volt_reg_addr		= OMAP3_VDD_MPU_SR_CONTROL_REG,
> @@ -179,16 +155,9 @@ static struct omap_voltdm_pmic omap3_mpu_pmic =
> {
>  static struct omap_voltdm_pmic omap3_core_pmic = {
>  	.slew_rate		= 4000,
>  	.step_size		= 12500,
> -	.on_volt                = 1200000,
> -	.onlp_volt              = 1000000,
> -	.ret_volt               = 975000,
> -	.off_volt               = 600000,
> -	.volt_setup_time        = 0xfff,
>  	.vp_erroroffset		= OMAP3_VP_CONFIG_ERROROFFSET,
>  	.vp_vstepmin		= OMAP3_VP_VSTEPMIN_VSTEPMIN,
>  	.vp_vstepmax		= OMAP3_VP_VSTEPMAX_VSTEPMAX,
> -	.vp_vddmin		= OMAP3430_VP2_VLIMITTO_VDDMIN,
> -	.vp_vddmax		= OMAP3430_VP2_VLIMITTO_VDDMAX,
>  	.vp_timeout_us		= OMAP3_VP_VLIMITTO_TIMEOUT_US,
>  	.i2c_slave_addr		= OMAP3_SRI2C_SLAVE_ADDR,
>  	.volt_reg_addr		= OMAP3_VDD_CORE_SR_CONTROL_REG,
> @@ -200,16 +169,9 @@ static struct omap_voltdm_pmic omap3_core_pmic
> = {
>  static struct omap_voltdm_pmic omap4_mpu_pmic = {
>  	.slew_rate		= 4000,
>  	.step_size		= 12660,
> -	.on_volt		= 1375000,
> -	.onlp_volt		= 1375000,
> -	.ret_volt		= 830000,
> -	.off_volt		= 0,
> -	.volt_setup_time	= 0,
>  	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
>  	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
>  	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
> -	.vp_vddmin		= OMAP4_VP_MPU_VLIMITTO_VDDMIN,
> -	.vp_vddmax		= OMAP4_VP_MPU_VLIMITTO_VDDMAX,
>  	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
>  	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
>  	.volt_reg_addr		= OMAP4_VDD_MPU_SR_VOLT_REG,
> @@ -222,16 +184,9 @@ static struct omap_voltdm_pmic omap4_mpu_pmic =
> {
>  static struct omap_voltdm_pmic omap4_iva_pmic = {
>  	.slew_rate		= 4000,
>  	.step_size		= 12660,
> -	.on_volt		= 1188000,
> -	.onlp_volt		= 1188000,
> -	.ret_volt		= 830000,
> -	.off_volt		= 0,
> -	.volt_setup_time	= 0,
>  	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
>  	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
>  	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
> -	.vp_vddmin		= OMAP4_VP_IVA_VLIMITTO_VDDMIN,
> -	.vp_vddmax		= OMAP4_VP_IVA_VLIMITTO_VDDMAX,
>  	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
>  	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
>  	.volt_reg_addr		= OMAP4_VDD_IVA_SR_VOLT_REG,
> @@ -244,16 +199,9 @@ static struct omap_voltdm_pmic omap4_iva_pmic =
> {
>  static struct omap_voltdm_pmic omap4_core_pmic = {
>  	.slew_rate		= 4000,
>  	.step_size		= 12660,
> -	.on_volt		= 1200000,
> -	.onlp_volt		= 1200000,
> -	.ret_volt		= 830000,
> -	.off_volt		= 0,
> -	.volt_setup_time	= 0,
>  	.vp_erroroffset		= OMAP4_VP_CONFIG_ERROROFFSET,
>  	.vp_vstepmin		= OMAP4_VP_VSTEPMIN_VSTEPMIN,
>  	.vp_vstepmax		= OMAP4_VP_VSTEPMAX_VSTEPMAX,
> -	.vp_vddmin		= OMAP4_VP_CORE_VLIMITTO_VDDMIN,
> -	.vp_vddmax		= OMAP4_VP_CORE_VLIMITTO_VDDMAX,
>  	.vp_timeout_us		= OMAP4_VP_VLIMITTO_TIMEOUT_US,
>  	.i2c_slave_addr		= OMAP4_SRI2C_SLAVE_ADDR,
>  	.volt_reg_addr		= OMAP4_VDD_CORE_SR_VOLT_REG,
> @@ -288,13 +236,6 @@ int __init omap3_twl_init(void)
>  	if (!cpu_is_omap34xx())
>  		return -ENODEV;
>
> -	if (cpu_is_omap3630()) {
> -		omap3_mpu_pmic.vp_vddmin = OMAP3630_VP1_VLIMITTO_VDDMIN;
> -		omap3_mpu_pmic.vp_vddmax = OMAP3630_VP1_VLIMITTO_VDDMAX;
> -		omap3_core_pmic.vp_vddmin =
> OMAP3630_VP2_VLIMITTO_VDDMIN;
> -		omap3_core_pmic.vp_vddmax =
> OMAP3630_VP2_VLIMITTO_VDDMAX;
> -	}
> -
>  	/*
>  	 * The smartreflex bit on twl4030 specifies if the setting of
> voltage
>  	 * is done over the I2C_SR path. Since this setting is
> independent of
> diff --git a/arch/arm/mach-omap2/opp3xxx_data.c b/arch/arm/mach-
> omap2/opp3xxx_data.c
> index d95f3f9..b5d8294 100644
> --- a/arch/arm/mach-omap2/opp3xxx_data.c
> +++ b/arch/arm/mach-omap2/opp3xxx_data.c
> @@ -26,6 +26,16 @@
>  #include "pm.h"
>
>  /* 34xx */
> +/* OMAP VP parameter values */
> +#define OMAP3430_VP1_VLIMITTO_VDDMIN	0x14
> +#define OMAP3430_VP1_VLIMITTO_VDDMAX	0x42
> +#define OMAP3430_VP2_VLIMITTO_VDDMIN	0x18
> +#define OMAP3430_VP2_VLIMITTO_VDDMAX	0x2c
> +
> +#define OMAP3_ON_VOLTAGE_UV		1200000
> +#define OMAP3_ONLP_VOLTAGE_UV		1000000
> +#define OMAP3_RET_VOLTAGE_UV		975000
> +#define OMAP3_OFF_VOLTAGE_UV		600000
>
>  /* VDD1 */
>
> @@ -44,6 +54,18 @@ struct omap_volt_data omap34xx_vddmpu_volt_data[]
> = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap34xx_mpu_vp_data = {
> +	.vddmin			= OMAP3430_VP1_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP3430_VP1_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap34xx_mpu_vc_data = {
> +	.on		= OMAP3_ON_VOLTAGE_UV,
> +	.onlp		= OMAP3_ONLP_VOLTAGE_UV,
> +	.ret		= OMAP3_RET_VOLTAGE_UV,
> +	.off		= OMAP3_OFF_VOLTAGE_UV,
> +};
> +
>  /* VDD2 */
>
>  #define OMAP3430_VDD_CORE_OPP1_UV		975000
> @@ -57,7 +79,23 @@ struct omap_volt_data
> omap34xx_vddcore_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap34xx_core_vp_data = {
> +	.vddmin			= OMAP3430_VP2_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP3430_VP2_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap34xx_core_vc_data = {
> +	.on		= OMAP3_ON_VOLTAGE_UV,
> +	.onlp		= OMAP3_ONLP_VOLTAGE_UV,
> +	.ret		= OMAP3_RET_VOLTAGE_UV,
> +	.off		= OMAP3_OFF_VOLTAGE_UV,
> +};
> +
>  /* 36xx */
> +#define OMAP3630_VP1_VLIMITTO_VDDMIN	0x18
> +#define OMAP3630_VP1_VLIMITTO_VDDMAX	0x3c
> +#define OMAP3630_VP2_VLIMITTO_VDDMIN	0x18
> +#define OMAP3630_VP2_VLIMITTO_VDDMAX	0x30
>
>  /* VDD1 */
>
> @@ -74,6 +112,18 @@ struct omap_volt_data
> omap36xx_vddmpu_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap36xx_mpu_vp_data = {
> +	.vddmin			= OMAP3630_VP1_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP3630_VP1_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap36xx_mpu_vc_data = {
> +	.on		= OMAP3_ON_VOLTAGE_UV,
> +	.onlp		= OMAP3_ONLP_VOLTAGE_UV,
> +	.ret		= OMAP3_RET_VOLTAGE_UV,
> +	.off		= OMAP3_OFF_VOLTAGE_UV,
> +};
> +
>  /* VDD2 */
>
>  #define OMAP3630_VDD_CORE_OPP50_UV		1000000
> @@ -85,6 +135,18 @@ struct omap_volt_data
> omap36xx_vddcore_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap36xx_core_vp_data = {
> +	.vddmin			= OMAP3630_VP2_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP3630_VP2_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap36xx_core_vc_data = {
> +	.on		= OMAP3_ON_VOLTAGE_UV,
> +	.onlp		= OMAP3_ONLP_VOLTAGE_UV,
> +	.ret		= OMAP3_RET_VOLTAGE_UV,
> +	.off		= OMAP3_OFF_VOLTAGE_UV,
> +};
> +
>  /* OPP data */
>
>  static struct omap_opp_def __initdata omap34xx_opp_def_list[] = {
> diff --git a/arch/arm/mach-omap2/opp4xxx_data.c b/arch/arm/mach-
> omap2/opp4xxx_data.c
> index 2293ba2..59f695b 100644
> --- a/arch/arm/mach-omap2/opp4xxx_data.c
> +++ b/arch/arm/mach-omap2/opp4xxx_data.c
> @@ -31,6 +31,18 @@
>   * voltage dependent data for each VDD.
>   */
>
> +#define OMAP4_VP_MPU_VLIMITTO_VDDMIN		0x0a
> +#define OMAP4_VP_MPU_VLIMITTO_VDDMAX		0x39
> +#define OMAP4_VP_IVA_VLIMITTO_VDDMIN		0x0a
> +#define OMAP4_VP_IVA_VLIMITTO_VDDMAX		0x2d
> +#define OMAP4_VP_CORE_VLIMITTO_VDDMIN		0x0a
> +#define OMAP4_VP_CORE_VLIMITTO_VDDMAX		0x28
> +
> +#define OMAP4_ON_VOLTAGE_UV			1350000
> +#define OMAP4_ONLP_VOLTAGE_UV			1350000
> +#define OMAP4_RET_VOLTAGE_UV			837500
> +#define OMAP4_OFF_VOLTAGE_UV			600000
> +
>  #define OMAP4430_VDD_MPU_OPP50_UV		1025000
>  #define OMAP4430_VDD_MPU_OPP100_UV		1200000
>  #define OMAP4430_VDD_MPU_OPPTURBO_UV		1313000
> @@ -44,6 +56,18 @@ struct omap_volt_data
> omap44xx_vdd_mpu_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap44xx_mpu_vp_data = {
> +	.vddmin			= OMAP4_VP_MPU_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP4_VP_MPU_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap44xx_mpu_vc_data = {
> +	.on			= OMAP4_ON_VOLTAGE_UV,
> +	.onlp			= OMAP4_ONLP_VOLTAGE_UV,
> +	.ret			= OMAP4_RET_VOLTAGE_UV,
> +	.off			= OMAP4_OFF_VOLTAGE_UV,
> +};
> +
>  #define OMAP4430_VDD_IVA_OPP50_UV		1013000
>  #define OMAP4430_VDD_IVA_OPP100_UV		1188000
>  #define OMAP4430_VDD_IVA_OPPTURBO_UV		1300000
> @@ -55,6 +79,18 @@ struct omap_volt_data
> omap44xx_vdd_iva_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap44xx_iva_vp_data = {
> +	.vddmin			= OMAP4_VP_IVA_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP4_VP_IVA_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap44xx_iva_vc_data = {
> +	.on			= OMAP4_ON_VOLTAGE_UV,
> +	.onlp			= OMAP4_ONLP_VOLTAGE_UV,
> +	.ret			= OMAP4_RET_VOLTAGE_UV,
> +	.off			= OMAP4_OFF_VOLTAGE_UV,
> +};
> +
>  #define OMAP4430_VDD_CORE_OPP50_UV		1025000
>  #define OMAP4430_VDD_CORE_OPP100_UV		1200000
>
> @@ -64,6 +100,17 @@ struct omap_volt_data
> omap44xx_vdd_core_volt_data[] = {
>  	VOLT_DATA_DEFINE(0, 0, 0, 0),
>  };
>
> +struct omap_vp_param omap44xx_core_vp_data = {
> +	.vddmin			= OMAP4_VP_CORE_VLIMITTO_VDDMIN,
> +	.vddmax			= OMAP4_VP_CORE_VLIMITTO_VDDMAX,
> +};
> +
> +struct omap_vc_param omap44xx_core_vc_data = {
> +	.on			= OMAP4_ON_VOLTAGE_UV,
> +	.onlp			= OMAP4_ONLP_VOLTAGE_UV,
> +	.ret			= OMAP4_RET_VOLTAGE_UV,
> +	.off			= OMAP4_OFF_VOLTAGE_UV,
> +};
>
>  static struct omap_opp_def __initdata omap44xx_opp_def_list[] = {
>  	/* MPU OPP1 - OPP50 */
> diff --git a/arch/arm/mach-omap2/prcm.c b/arch/arm/mach-omap2/prcm.c
> index 2e40a5c..5d94e91 100644
> --- a/arch/arm/mach-omap2/prcm.c
> +++ b/arch/arm/mach-omap2/prcm.c
> @@ -42,6 +42,7 @@
>  void __iomem *prm_base;
>  void __iomem *cm_base;
>  void __iomem *cm2_base;
> +static struct omap_osc_data *osc_setup;
>
>  #define MAX_MODULE_ENABLE_WAIT		100000
>
> @@ -165,3 +166,13 @@ void __init omap2_set_globals_prcm(struct
> omap_globals *omap2_globals)
>  		WARN_ON(!cm2_base);
>  	}
>  }
> +
> +void __init omap_osc_register(struct omap_osc_data *osc)
> +{
> +	osc_setup = osc;
> +}
> +
> +struct omap_osc_data *omap_osc_get(void)
> +{
> +	return osc_setup;
> +}
> diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.c b/arch/arm/mach-
> omap2/prm2xxx_3xxx.c
> index 3b83763..2c678e9 100644
> --- a/arch/arm/mach-omap2/prm2xxx_3xxx.c
> +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.c
> @@ -212,3 +212,9 @@ u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8
> offset)
>  {
>  	return omap2_prm_rmw_mod_reg_bits(mask, bits, OMAP3430_GR_MOD,
> offset);
>  }
> +
> +void omap3_prm_set_clksetup(unsigned long clksetup)
> +{
> +	clksetup = clksetup * 32768 / (1000 * 1000) + 1;
> +	omap3_prm_vcvp_write(clksetup, OMAP3_PRM_CLKSETUP_OFFSET);
> +}
> diff --git a/arch/arm/mach-omap2/prm2xxx_3xxx.h b/arch/arm/mach-
> omap2/prm2xxx_3xxx.h
> index cef533d..32740a0 100644
> --- a/arch/arm/mach-omap2/prm2xxx_3xxx.h
> +++ b/arch/arm/mach-omap2/prm2xxx_3xxx.h
> @@ -314,6 +314,7 @@ void omap3_prm_vp_clear_txdone(u8 vp_id);
>  extern u32 omap3_prm_vcvp_read(u8 offset);
>  extern void omap3_prm_vcvp_write(u32 val, u8 offset);
>  extern u32 omap3_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset);
> +extern void omap3_prm_set_clksetup(unsigned long clksetup);
>  #endif	/* CONFIG_ARCH_OMAP4 */
>
>  #endif
> diff --git a/arch/arm/mach-omap2/prm44xx.c b/arch/arm/mach-
> omap2/prm44xx.c
> index 495a31a..c91c66f 100644
> --- a/arch/arm/mach-omap2/prm44xx.c
> +++ b/arch/arm/mach-omap2/prm44xx.c
> @@ -26,6 +26,7 @@
>  #include "prm-regbits-44xx.h"
>  #include "prcm44xx.h"
>  #include "prminst44xx.h"
> +#include "scrm44xx.h"
>
>  /* PRM low-level functions */
>
> @@ -121,3 +122,9 @@ u32 omap4_prm_vcvp_rmw(u32 mask, u32 bits, u8
> offset)
>  					       OMAP4430_PRM_DEVICE_INST,
>  					       offset);
>  }
> +
> +void omap4_prm_set_clksetup(unsigned long clksetup)
> +{
> +	clksetup = clksetup * 32768 / (1000 * 1000) + 1;
> +	__raw_writel(clksetup, OMAP4_SCRM_CLKSETUPTIME);
> +}
> diff --git a/arch/arm/mach-omap2/prm44xx.h b/arch/arm/mach-
> omap2/prm44xx.h
> index 3d66ccd..9b21f33 100644
> --- a/arch/arm/mach-omap2/prm44xx.h
> +++ b/arch/arm/mach-omap2/prm44xx.h
> @@ -762,6 +762,7 @@ void omap4_prm_vp_clear_txdone(u8 vp_id);
>  extern u32 omap4_prm_vcvp_read(u8 offset);
>  extern void omap4_prm_vcvp_write(u32 val, u8 offset);
>  extern u32 omap4_prm_vcvp_rmw(u32 mask, u32 bits, u8 offset);
> +extern void omap4_prm_set_clksetup(unsigned long clksetup);
>
>  # endif
>
> diff --git a/arch/arm/mach-omap2/vc.c b/arch/arm/mach-omap2/vc.c
> index 16fa912..8bbc95a 100644
> --- a/arch/arm/mach-omap2/vc.c
> +++ b/arch/arm/mach-omap2/vc.c
> @@ -1,14 +1,18 @@
>  #include <linux/kernel.h>
>  #include <linux/delay.h>
>  #include <linux/init.h>
> +#include <linux/clk.h>
> +#include <linux/io.h>
>
>  #include <plat/cpu.h>
> +#include <plat/prcm.h>
>
>  #include "voltage.h"
>  #include "vc.h"
>  #include "prm-regbits-34xx.h"
>  #include "prm-regbits-44xx.h"
>  #include "prm44xx.h"
> +#include "scrm44xx.h"
>
>  /**
>   * struct omap_vc_channel_cfg - describe the cfg_channel bitfield
> @@ -196,42 +200,153 @@ int omap_vc_bypass_scale(struct voltagedomain
> *voltdm,
>
>  static void __init omap3_vfsm_init(struct voltagedomain *voltdm)
>  {
> +	unsigned long clksetup;
> +	unsigned long voltsetup2;
> +	struct omap_osc_data *osc;
>  	/*
>  	 * Voltage Manager FSM parameters init
>  	 * XXX This data should be passed in from the board file
>  	 */
> -	voltdm->write(OMAP3_CLKSETUP, OMAP3_PRM_CLKSETUP_OFFSET);
> -	voltdm->write(OMAP3_VOLTOFFSET, OMAP3_PRM_VOLTOFFSET_OFFSET);
> -	voltdm->write(OMAP3_VOLTSETUP2, OMAP3_PRM_VOLTSETUP2_OFFSET);
> +	osc = omap_osc_get();
> +	if (osc) {
> +		clksetup = osc->clk_setup_off;
> +		omap3_prm_set_clksetup(clksetup);
> +	}
> +
> +	clksetup = voltdm->read(OMAP3_PRM_CLKSETUP_OFFSET);
> +
> +	voltsetup2 = voltdm->board_data->vdd_setup_off.ramp_up;
> +	voltsetup2 = voltsetup2 * 32768 / (1000 * 1000) + 1;
> +	voltdm->write(voltsetup2, OMAP3_PRM_VOLTSETUP2_OFFSET);
> +
> +	voltdm->write(clksetup - voltsetup2,
> OMAP3_PRM_VOLTOFFSET_OFFSET);
>  }
>
>  static void __init omap3_vc_init_channel(struct voltagedomain
> *voltdm)
>  {
> -	static bool is_initialized;
> +	unsigned long temp;
> +	struct clk *sys_ck;
> +	u32 sys_clk_rate;
>
> -	if (is_initialized)
> +	if (!voltdm->board_data) {
> +		pr_warning("%s: no voltdm board data for %s\n", __func__,
> +			voltdm->name);
>  		return;
> +	}
>
> -	omap3_vfsm_init(voltdm);
> +	sys_ck = clk_get(NULL, "sys_ck");
> +	if (IS_ERR(sys_ck)) {
> +		pr_warning("%s: could not get the sys clk to calculate "
> +			"various vdd_%s params\n", __func__, voltdm-
> >name);
> +		return;
> +	}
> +	sys_clk_rate = clk_get_rate(sys_ck);
> +	clk_put(sys_ck);
> +	/* Divide to avoid overflow */
> +	sys_clk_rate /= 1000000;
> +
> +	temp = voltdm->board_data->vdd_setup_off.ramp_up;
> +	temp = temp * sys_clk_rate / 8;
> +
> +	/* Configure the setup times */
> +	voltdm->rmw(voltdm->vfsm->voltsetup_mask,
> +		    temp << __ffs(voltdm->vfsm->voltsetup_mask),
> +		    voltdm->vfsm->voltsetup_reg);
>
> -	is_initialized = true;
> +	omap3_vfsm_init(voltdm);
>  }
>
> +static u32 omap4_calc_volt_ramp(u32 time, u32 clk_rate)
> +{
> +	u32 prescaler;
> +	u32 cycles;
> +
> +	cycles = clk_rate / 1000 * time;
> +
> +	cycles /= 64;
> +	prescaler = 0;
> +
> +	/* shift to next prescaler until no overflow */
> +
> +	/* scale for div 256 = 64 * 4 */
> +	if (cycles > 63) {
> +		cycles /= 4;
> +		prescaler++;
> +	}
> +
> +	/* scale for div 512 = 256 * 2 */
> +	if (cycles > 63) {
> +		cycles /= 2;
> +		prescaler++;
> +	}
> +
> +	/* scale for div 2048 = 512 * 4 */
> +	if (cycles > 63) {
> +		cycles /= 4;
> +		prescaler++;
> +	}
> +
> +	/* check for overflow => invalid ramp time */
> +	if (cycles > 63)
> +		return 0;
> +
> +	cycles++;
> +
> +	return (prescaler << OMAP4430_RAMP_UP_PRESCAL_SHIFT) |
> +		(cycles << OMAP4430_RAMP_UP_COUNT_SHIFT);
> +}
>
>  /* OMAP4 specific voltage init functions */
>  static void __init omap4_vc_init_channel(struct voltagedomain
> *voltdm)
>  {
> -	static bool is_initialized;
Why is this removed?
> -	u32 vc_val;
> +	u32 vc_val, temp;
> +	struct clk *sys_ck;
> +	u32 sys_clk_rate;
> +	unsigned long val;
> +	struct omap_osc_data *osc;
> +
> +	sys_ck = clk_get(NULL, "sys_clkin_ck");
> +	if (IS_ERR(sys_ck)) {
> +		pr_warning("%s: Could not get sys clk to calculate "
> +			"various vdd_%s params\n", __func__, voltdm-
> >name);
> +		return;
> +	}
> +	sys_clk_rate = clk_get_rate(sys_ck);
> +	clk_put(sys_ck);
>
> -	if (is_initialized)
> +	/* Configure the setup times */
> +	vc_val = voltdm->read(voltdm->vfsm->voltsetup_reg);
> +
> +	temp = omap4_calc_volt_ramp(voltdm->board_data-
> >vdd_setup_off.ramp_down,
> +				    sys_clk_rate);
> +	if (!temp) {
> +		pr_warning("%s: Invalid VoltOff setup time for vdd%s\n",
> +			__func__, voltdm->name);
>  		return;
> +	}
> +	vc_val |= temp << OMAP4430_RAMP_DOWN_COUNT_SHIFT;
> +
> +	temp = omap4_calc_volt_ramp(voltdm->board_data-
> >vdd_setup_off.ramp_up,
> +				    sys_clk_rate);
> +	if (!temp) {
> +		pr_warning("%s: Invalid VoltOff setup time for vdd%s\n",
> +			__func__, voltdm->name);
> +		return;
> +	}
> +	vc_val |= temp << OMAP4430_RAMP_UP_COUNT_SHIFT;
> +
> +	voltdm->write(vc_val, voltdm->vfsm->voltsetup_reg);
> +
> +	osc = omap_osc_get();
> +
> +	if (osc) {
> +		val = osc->clk_setup_off;
> +		omap4_prm_set_clksetup(val);
> +	}
>
>  	/* XXX These are magic numbers and do not belong! */
>  	vc_val = (0x60 << OMAP4430_SCLL_SHIFT | 0x26 <<
> OMAP4430_SCLH_SHIFT);
>  	voltdm->write(vc_val, OMAP4_PRM_VC_CFG_I2C_CLK_OFFSET);
> -
> -	is_initialized = true;
>  }
>
>  /**
> @@ -305,7 +420,6 @@ void __init omap_vc_init_channel(struct
> voltagedomain *voltdm)
>  	vc->i2c_slave_addr = voltdm->pmic->i2c_slave_addr;
>  	vc->volt_reg_addr = voltdm->pmic->volt_reg_addr;
>  	vc->cmd_reg_addr = voltdm->pmic->cmd_reg_addr;
> -	vc->setup_time = voltdm->pmic->volt_setup_time;
>
>  	/* Configure the i2c slave address for this VC */
>  	voltdm->rmw(vc->smps_sa_mask,
> @@ -329,10 +443,10 @@ void __init omap_vc_init_channel(struct
> voltagedomain *voltdm)
>  	}
>
>  	/* Set up the on, inactive, retention and off voltage */
> -	on_vsel = voltdm->pmic->uv_to_vsel(voltdm->pmic->on_volt);
> -	onlp_vsel = voltdm->pmic->uv_to_vsel(voltdm->pmic->onlp_volt);
> -	ret_vsel = voltdm->pmic->uv_to_vsel(voltdm->pmic->ret_volt);
> -	off_vsel = voltdm->pmic->uv_to_vsel(voltdm->pmic->off_volt);
> +	on_vsel = voltdm->pmic->uv_to_vsel(voltdm->vc_param->on);
> +	onlp_vsel = voltdm->pmic->uv_to_vsel(voltdm->vc_param->onlp);
> +	ret_vsel = voltdm->pmic->uv_to_vsel(voltdm->vc_param->ret);
> +	off_vsel = voltdm->pmic->uv_to_vsel(voltdm->vc_param->off);
>  	val = ((on_vsel << vc->common->cmd_on_shift) |
>  	       (onlp_vsel << vc->common->cmd_onlp_shift) |
>  	       (ret_vsel << vc->common->cmd_ret_shift) |
> @@ -343,11 +457,6 @@ void __init omap_vc_init_channel(struct
> voltagedomain *voltdm)
>  	/* Channel configuration */
>  	omap_vc_config_channel(voltdm);
>
> -	/* Configure the setup times */
> -	voltdm->rmw(voltdm->vfsm->voltsetup_mask,
> -		    vc->setup_time << __ffs(voltdm->vfsm-
> >voltsetup_mask),
> -		    voltdm->vfsm->voltsetup_reg);
> -
>  	omap_vc_i2c_init(voltdm);
>
>  	if (cpu_is_omap34xx())
> diff --git a/arch/arm/mach-omap2/vc.h b/arch/arm/mach-omap2/vc.h
> index ec50643..e6fdd23 100644
> --- a/arch/arm/mach-omap2/vc.h
> +++ b/arch/arm/mach-omap2/vc.h
> @@ -80,7 +80,6 @@ struct omap_vc_channel {
>  	u16 i2c_slave_addr;
>  	u16 volt_reg_addr;
>  	u16 cmd_reg_addr;
> -	u16 setup_time;
>  	u8 cfg_channel;
>  	bool i2c_high_speed;
>
> diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-
> omap2/voltage.c
> index cebc8b1..a95d2dd4 100644
> --- a/arch/arm/mach-omap2/voltage.c
> +++ b/arch/arm/mach-omap2/voltage.c
> @@ -428,3 +428,25 @@ void voltdm_init(struct voltagedomain
> **voltdms)
>  			_voltdm_register(*v);
>  	}
>  }
> +
> +/**
> + * omap_voltage_register_board_params - set board values for a
> voltagedomain
> + * @voltdm: voltagedomain whose parameters should be set
> + * @board_params: board parameters for voltagedomain
> + *
> + * Sets up board parameters for a voltagedomain. These include the
> ramp up
> + * and ramp down times for the domain. Return 0 for success, -
> EINVAL for
> + * invalid voltagedomain.
> + */
> +int omap_voltage_register_board_params(struct voltagedomain *voltdm,
> +	struct omap_volt_board_data *board_params)
> +{
> +	if (!voltdm || IS_ERR(voltdm)) {
> +		pr_warning("%s: VDD specified does not exist!\n",
> __func__);
> +		return -EINVAL;
> +	}
> +
> +	voltdm->board_data = board_params;
> +
> +	return 0;
> +}
> diff --git a/arch/arm/mach-omap2/voltage.h b/arch/arm/mach-
> omap2/voltage.h
> index b4c6259..e4b9e0e 100644
> --- a/arch/arm/mach-omap2/voltage.h
> +++ b/arch/arm/mach-omap2/voltage.h
> @@ -70,6 +70,9 @@ struct voltagedomain {
>  	const struct omap_vfsm_instance *vfsm;
>  	struct omap_vp_instance *vp;
>  	struct omap_voltdm_pmic *pmic;
> +	struct omap_vp_param *vp_param;
> +	struct omap_vc_param *vc_param;
> +	struct omap_volt_board_data *board_data;
>
>  	/* VC/VP register access functions: SoC specific */
>  	u32 (*read) (u8 offset);
> @@ -89,6 +92,28 @@ struct voltagedomain {
>  };
>
>  /**
> + * omap_vdd_setuptime - vdd set up time info
> + * @ramp_up    : VDD ramp up time in us
> + * @ramp_down  : VDD ramp down time in us, not used in OMAP3
> + * @clksetup   : setup time of the oscillator system clock
> (sys_clk) in us
OMAP4 also has pmic set up time. You probably need to account that as
well.
> + */
> +struct omap_vdd_setuptime {
> +	u16 ramp_up;
> +	u16 ramp_down;
> +	u16 clksetup;
> +};
> +
> +/**
> + * omap_volt_board_data - vdd set up time
> + * @vdd_setup_ret      : VDD setup time for retention mode
Can't this be calculated dynamically based on number of voltage steps
required for ramp and pmic slew rate? Basically ((on_voltage -
retention_voltage) / step_size) * slew_rate?

I think we should be able to calculate all the timing settings based on
below parameters
1. oscillator ramp up/ramp down delay (part of board parameter)
2. PMIC slew rate (part of pmic data)
3. PMIC sleep/activation delay (also part of pmic data)

> + * @vdd_setup_off      : VDD setup time for off mode
Similarly here?

Vishwa
> + */
> +struct omap_volt_board_data {
> +	struct omap_vdd_setuptime vdd_setup_ret;
> +	struct omap_vdd_setuptime vdd_setup_off;
> +};
> +
> +/**
>   * struct omap_volt_data - Omap voltage specific data.
>   * @voltage_nominal:	The possible voltage value in uV
>   * @sr_efuse_offs:	The offset of the efuse register(from system
> @@ -119,10 +148,6 @@ struct omap_volt_data {
>  struct omap_voltdm_pmic {
>  	int slew_rate;
>  	int step_size;
> -	u32 on_volt;
> -	u32 onlp_volt;
> -	u32 ret_volt;
> -	u32 off_volt;
>  	u16 volt_setup_time;
>  	u16 i2c_slave_addr;
>  	u16 volt_reg_addr;
> @@ -130,8 +155,6 @@ struct omap_voltdm_pmic {
>  	u8 vp_erroroffset;
>  	u8 vp_vstepmin;
>  	u8 vp_vstepmax;
> -	u8 vp_vddmin;
> -	u8 vp_vddmax;
>  	u8 vp_timeout_us;
>  	bool i2c_high_speed;
>  	u8 i2c_mcode;
> @@ -139,6 +162,18 @@ struct omap_voltdm_pmic {
>  	u8 (*uv_to_vsel) (unsigned long uV);
>  };
>
> +struct omap_vp_param {
> +	u8 vddmax;
> +	u8 vddmin;
> +};
> +
> +struct omap_vc_param {
> +	u32 on;
> +	u32 onlp;
> +	u32 ret;
> +	u32 off;
> +};
> +
>  void omap_voltage_get_volttable(struct voltagedomain *voltdm,
>  		struct omap_volt_data **volt_data);
>  struct omap_volt_data *omap_voltage_get_voltdata(struct
> voltagedomain *voltdm,
> @@ -149,6 +184,8 @@ int omap_voltage_register_pmic(struct
> voltagedomain *voltdm,
>  void omap_change_voltscale_method(struct voltagedomain *voltdm,
>  		int voltscale_method);
>  int omap_voltage_late_init(void);
> +int omap_voltage_register_board_params(struct voltagedomain *voltdm,
> +			struct omap_volt_board_data *board_params);
>  #else
>  static inline int omap_voltage_register_pmic(struct voltagedomain
> *voltdm,
>  					     struct omap_voltdm_pmic
*pmic)
> @@ -161,6 +198,12 @@ static inline int omap_voltage_late_init(void)
>  {
>  	return -EINVAL;
>  }
> +static inline int omap_voltage_register_board_params(
> +		struct voltagedomain *voltdm,
> +		struct omap_volt_board_data *board_params)
> +{
> +	return -EINVAL;
> +}
>  #endif
>
>  extern void omap2xxx_voltagedomains_init(void);
> diff --git a/arch/arm/mach-omap2/voltagedomains3xxx_data.c
> b/arch/arm/mach-omap2/voltagedomains3xxx_data.c
> index b0d0ae1..9c907af 100644
> --- a/arch/arm/mach-omap2/voltagedomains3xxx_data.c
> +++ b/arch/arm/mach-omap2/voltagedomains3xxx_data.c
> @@ -90,9 +90,17 @@ void __init omap3xxx_voltagedomains_init(void)
>  	if (cpu_is_omap3630()) {
>  		omap3_voltdm_mpu.volt_data = omap36xx_vddmpu_volt_data;
>  		omap3_voltdm_core.volt_data =
> omap36xx_vddcore_volt_data;
> +		omap3_voltdm_mpu.vp_param = &omap36xx_mpu_vp_data;
> +		omap3_voltdm_core.vp_param = &omap36xx_core_vp_data;
> +		omap3_voltdm_mpu.vc_param = &omap36xx_mpu_vc_data;
> +		omap3_voltdm_core.vc_param = &omap36xx_core_vc_data;
>  	} else {
>  		omap3_voltdm_mpu.volt_data = omap34xx_vddmpu_volt_data;
>  		omap3_voltdm_core.volt_data =
> omap34xx_vddcore_volt_data;
> +		omap3_voltdm_mpu.vp_param = &omap34xx_mpu_vp_data;
> +		omap3_voltdm_core.vp_param = &omap34xx_core_vp_data;
> +		omap3_voltdm_mpu.vc_param = &omap34xx_mpu_vc_data;
> +		omap3_voltdm_core.vc_param = &omap34xx_core_vc_data;
>  	}
>
>  	for (i = 0; voltdm = voltagedomains_omap3[i], voltdm; i++)
> diff --git a/arch/arm/mach-omap2/voltagedomains44xx_data.c
> b/arch/arm/mach-omap2/voltagedomains44xx_data.c
> index c4584e9..0a22960 100644
> --- a/arch/arm/mach-omap2/voltagedomains44xx_data.c
> +++ b/arch/arm/mach-omap2/voltagedomains44xx_data.c
> @@ -104,6 +104,14 @@ void __init omap44xx_voltagedomains_init(void)
>  	omap4_voltdm_iva.volt_data = omap44xx_vdd_iva_volt_data;
>  	omap4_voltdm_core.volt_data = omap44xx_vdd_core_volt_data;
>
> +	omap4_voltdm_mpu.vp_param = &omap44xx_mpu_vp_data;
> +	omap4_voltdm_iva.vp_param = &omap44xx_iva_vp_data;
> +	omap4_voltdm_core.vp_param = &omap44xx_core_vp_data;
> +
> +	omap4_voltdm_mpu.vc_param = &omap44xx_mpu_vc_data;
> +	omap4_voltdm_iva.vc_param = &omap44xx_iva_vc_data;
> +	omap4_voltdm_core.vc_param = &omap44xx_core_vc_data;
> +
>  	for (i = 0; voltdm = voltagedomains_omap4[i], voltdm; i++)
>  		voltdm->sys_clk.name = sys_clk_name;
>
> diff --git a/arch/arm/mach-omap2/vp.c b/arch/arm/mach-omap2/vp.c
> index 66bd700..34bced5 100644
> --- a/arch/arm/mach-omap2/vp.c
> +++ b/arch/arm/mach-omap2/vp.c
> @@ -53,8 +53,8 @@ void __init omap_vp_init(struct voltagedomain
> *voltdm)
>  	sys_clk_rate = voltdm->sys_clk.rate / 1000;
>
>  	timeout = (sys_clk_rate * voltdm->pmic->vp_timeout_us) / 1000;
> -	vddmin = voltdm->pmic->vp_vddmin;
> -	vddmax = voltdm->pmic->vp_vddmax;
> +	vddmin = voltdm->vp_param->vddmin;
> +	vddmax = voltdm->vp_param->vddmax;
>
>  	waittime = ((voltdm->pmic->step_size / voltdm->pmic-
> >slew_rate) *
>  		    sys_clk_rate) / 1000;
> diff --git a/arch/arm/plat-omap/include/plat/prcm.h b/arch/arm/plat-
> omap/include/plat/prcm.h
> index 267f43b..cc19997 100644
> --- a/arch/arm/plat-omap/include/plat/prcm.h
> +++ b/arch/arm/plat-omap/include/plat/prcm.h
> @@ -27,9 +27,16 @@
>  #ifndef __ASM_ARM_ARCH_OMAP_PRCM_H
>  #define __ASM_ARM_ARCH_OMAP_PRCM_H
>
> +struct omap_osc_data {
> +	u32 clk_setup_ret;
> +	u32 clk_setup_off;
> +};
> +
>  u32 omap_prcm_get_reset_sources(void);
>  int omap2_cm_wait_idlest(void __iomem *reg, u32 mask, u8 idlest,
>  			 const char *name);
> +void omap_osc_register(struct omap_osc_data *osc);
> +struct omap_osc_data *omap_osc_get(void);
>
>  #endif
>
> --
> 1.7.4.1
>
>
> Texas Instruments Oy, Tekniikantie 12, 02150 Espoo. Y-tunnus:
> 0115040-6. Kotipaikka: Helsinki
>
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