Hi,
On Fri, Feb 18, 2011 at 2:50 PM, Mike Turquette <mturquette@xxxxxx> wrote:
> Introduce voltage transition notification handlers for Adaptive Body-Bias
> LDOs. There is an ABB LDO for VDD_MPU on OMAP3630 and an ABB_LDO on VDD_MPU
> and VDD_IVA on OMAP4430.
>
> All of these LDOs are handled similary. Initial configuration is to enable
> the possibility of going into Forward Body-Bias (which boosts voltage at
> high OPPs). This feature was designed for weak silicon, and eFuse values
> exist to control whether or not this feature should be turned on. However
> recommendations from hardware folks always say to leave it on regardless of
> eFuse values, so we don't bother checking them. For all other OPPs the LDO
> is in bypass and will follow the voltage of it's corresponding VDD_xxx.
> Reverse Body-Bias exists but we never use this in practice (for saving power
> on strongly characterised silicon).
Would RBB be never enabled in future for any of the OPPs or any platforms
that way SLOW_OPP should also be added in OPP types
> Upon a DVFS transition the notifiers handle the sequencing of voltage
> scaling and ABB LDO transitions. When moving to a higher OPP that needs
> FBB, raise voltage first and then enable FBB. When moving down to an OPP
> that bypasses ABB, first bypass the LDO then lower voltage.
>
> Signed-off-by: Mike Turquette <mturquette@xxxxxx>
> ---
> arch/arm/mach-omap2/voltage.c | 379 ++++++++++++++++++++++++++++-
> arch/arm/plat-omap/include/plat/voltage.h | 6 +-
> 2 files changed, 370 insertions(+), 15 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/voltage.c b/arch/arm/mach-omap2/voltage.c
> index 6ede092..644a45f 100644
> --- a/arch/arm/mach-omap2/voltage.c
> +++ b/arch/arm/mach-omap2/voltage.c
> @@ -43,6 +43,16 @@
> #define FAST_OPP 0x1
> #define NOMINAL_OPP 0x0
>
> +/* prototypes used by ABB function pointers */
> +static int omap_abb_notify_voltage(struct notifier_block *nb,
> + unsigned long val, void *data);
> +
> +static int omap3_abb_configure(struct omap_abb_info *abb);
> +static int omap3_abb_set_opp(struct omap_abb_info *abb, int opp_type);
> +
> +static int omap4_abb_configure(struct omap_abb_info *abb);
> +static int omap4_abb_set_opp(struct omap_abb_info *abb, int opp_type);
> +
> static struct omap_vdd_info *vdd_info;
> /*
> * Number of scalable voltage domains.
> @@ -70,9 +80,11 @@ static struct omap_vdd_info omap3_vdd_info[] = {
> = OMAP3_PRM_IRQSTATUS_MPU_OFFSET,
> .done_st_shift = OMAP3630_ABB_LDO_TRANXDONE_ST_SHIFT,
> .done_st_mask = OMAP3630_ABB_LDO_TRANXDONE_ST_MASK,
> - .configure = NULL,
> - .nb_handler = NULL,
> - .set_opp = NULL,
> + .nb = {
> + .notifier_call = omap_abb_notify_voltage,
> + },
> + .configure = omap3_abb_configure,
> + .set_opp = omap3_abb_set_opp,
> },
> },
> {
> @@ -113,9 +125,11 @@ static struct omap_vdd_info omap4_vdd_info[] = {
> = OMAP4_PRM_IRQSTATUS_MPU_2_OFFSET,
> .done_st_shift = OMAP4430_ABB_MPU_DONE_ST_SHIFT,
> .done_st_mask = OMAP4430_ABB_MPU_DONE_ST_MASK,
> - .configure = NULL,
> - .nb_handler = NULL,
> - .set_opp = NULL,
> + .nb = {
> + .notifier_call = omap_abb_notify_voltage,
> + },
> + .configure = omap4_abb_configure,
> + .set_opp = omap4_abb_set_opp,
> },
> },
> {
> @@ -137,9 +151,11 @@ static struct omap_vdd_info omap4_vdd_info[] = {
> = OMAP4_PRM_IRQSTATUS_MPU_OFFSET,
> .done_st_shift = OMAP4430_ABB_IVA_DONE_ST_SHIFT,
> .done_st_mask = OMAP4430_ABB_IVA_DONE_ST_MASK,
> - .configure = NULL,
> - .nb_handler = NULL,
> - .set_opp = NULL,
> + .nb = {
> + .notifier_call = omap_abb_notify_voltage,
> + },
> + .configure = omap4_abb_configure,
> + .set_opp = omap4_abb_set_opp,
> },
> },
> {
> @@ -194,7 +210,7 @@ static struct omap_volt_data omap36xx_vddmpu_volt_data[] = {
> NOMINAL_OPP),
> VOLT_DATA_DEFINE(OMAP3630_VDD_MPU_OPP100_UV,
> OMAP3630_CONTROL_FUSE_OPP100_VDD1, 0xf9, 0x16,
> - NOMINAL_OPP),
> + FAST_OPP),
> VOLT_DATA_DEFINE(OMAP3630_VDD_MPU_OPP120_UV,
> OMAP3630_CONTROL_FUSE_OPP120_VDD1, 0xfa, 0x23,
> NOMINAL_OPP),
> @@ -493,6 +509,74 @@ static void __init vdd_debugfs_init(struct omap_vdd_info *vdd)
> &nom_volt_debug_fops);
> }
>
> +/* voltage transition notification handlers */
> +
> +/**
> + * omap_abb_notify_voltage - voltage change notifier handler for ABB
> + * @nb : notifier block
> + * @val : VOLTSCALE_PRECHANGE or VOLTSCALE_POSTCHANGE
> + * @data : struct omap_volt_change_info for a given voltage domain
> + *
> + * Sets ABB LDO to either bypass or Forward Body-Bias whenever a voltage
> + * change notification is generated. Voltages marked as FAST will result in
> + * FBB operation of ABB LDO and voltages marked as NOMINAL will bypass the
> + * LDO. Does not handle Reverse Body-Bias since there is not benefit for it
> + * on any existing silicon. Returns 0 upon success, negative error code
> + * otherwise.
> + */
> +static int omap_abb_notify_voltage(struct notifier_block *nb,
> + unsigned long val, void *data)
> +{
> + struct omap_volt_change_info *v_info;
> + struct omap_vdd_info *vdd;
> + struct omap_volt_data *curr_volt_data, *target_volt_data;
> + int ret = 0;
> +
> + if (!nb || IS_ERR(nb) || !data || IS_ERR(data)) {
> + pr_warning("%s: invalid data specified\n", __func__);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + v_info = (struct omap_volt_change_info *)data;
> + vdd = v_info->vdd;
> +
> + /* get the voltdata structures for the current & target voltage */
> + target_volt_data = omap_voltage_get_voltdata(&vdd->voltdm,
> + v_info->target_volt);
> + curr_volt_data = omap_voltage_get_voltdata(&vdd->voltdm,
> + v_info->curr_volt);
> +
> + /* nothing to do here */
> + if (target_volt_data->abb_opp == curr_volt_data->abb_opp)
> + goto out;
> +
> + /*
> + * When the VDD drops from a voltage requiring the ABB LDO to be in
> + * FBB mode to a voltage requiring bypass mode, we must bypass the LDO
> + * before the voltage transition.
> + */
> + if (val == VOLTSCALE_PRECHANGE &&
> + target_volt_data->abb_opp == NOMINAL_OPP) {
> + ret = vdd->abb.set_opp(&vdd->abb, NOMINAL_OPP);
> +
> + /*
> + * When moving from a voltage requiring the ABB LDO to be bypassed to
> + * a voltage requiring FBB mode, we must change the LDO operation
> + * after the voltage transition.
> + */
> + } else if (val == VOLTSCALE_POSTCHANGE &&
> + target_volt_data->abb_opp == FAST_OPP) {
> + ret = vdd->abb.set_opp(&vdd->abb, FAST_OPP);
> +
> + /* invalid combination, bail out */
> + } else
> + ret = -EINVAL;
> +
> +out:
> + return ret;
> +}
> +
> /* Voltage scale and accessory APIs */
> static int _pre_volt_scale(struct omap_vdd_info *vdd,
> unsigned long target_volt, u8 *target_vsel, u8 *current_vsel)
> @@ -717,6 +801,142 @@ static int vp_forceupdate_scale_voltage(struct omap_vdd_info *vdd,
> return 0;
> }
>
> +/**
> + * omap3_abb_set_opp - program ABB LDO upon a voltage transition
> + *
> + * @abb : ABB instance being programmed
> + * @opp_type : flag for NOMINAL or FAST OPP
> + */
> +static int omap3_abb_set_opp(struct omap_abb_info *abb, int opp_type)
> +{
> + int ret = 0;
> + int timeout;
> +
> + /* program for NOMINAL OPP or FAST OPP */
> + omap2_prm_rmw_mod_reg_bits(OMAP3630_OPP_SEL_MASK,
> + (opp_type << OMAP3630_OPP_SEL_SHIFT),
> + OMAP3430_GR_MOD, abb->setup_offs);
Rather than passing a parameter 'opp_type' u can set OPP_SEL bit in
SETUP Register in API
omap_abb_notify_voltage where if-else are used to check whether ABB
needs to transition or not.
> +
> + /* clear ABB ldo interrupt status */
> + omap2_prm_clear_mod_reg_bits(abb->done_st_mask, OCP_MOD,
> + abb->irqstatus_mpu_offs);
> +
> + /* enable ABB LDO OPP change */
> + omap2_prm_set_mod_reg_bits(OMAP3630_OPP_CHANGE_MASK, OMAP3430_GR_MOD,
> + abb->setup_offs);
> +
> + timeout = 0;
> +
> + /* wait until OPP change completes */
> + while ((timeout < ABB_TRANXDONE_TIMEOUT) &&
> + (!(omap2_prm_read_mod_reg(OCP_MOD,
> + abb->irqstatus_mpu_offs) &
> + abb->done_st_mask))) {
> + udelay(1);
> + timeout++;
> + }
> +
> + if (timeout == ABB_TRANXDONE_TIMEOUT)
> + pr_warning("%s: TRANXDONE timed out waiting for OPP change\n",
> + __func__);
> +
> + timeout = 0;
> +
> + /* Clear all pending TRANXDONE interrupts/status */
> + while (timeout < ABB_TRANXDONE_TIMEOUT) {
> + omap2_prm_write_mod_reg((1 << abb->done_st_shift), OCP_MOD,
> + abb->irqstatus_mpu_offs);
> +
> + if (!(omap2_prm_read_mod_reg(OCP_MOD, abb->irqstatus_mpu_offs)
> + & abb->done_st_mask))
> + break;
> +
> + udelay(1);
> + timeout++;
> + }
> +
> + if (timeout == ABB_TRANXDONE_TIMEOUT) {
> + pr_warning("%s: TRANXDONE timed out trying to clear status\n",
> + __func__);
> + ret = -EBUSY;
> + }
> +
> + return ret;
> +}
> +
> +/**
> + * omap4_abb_set_opp - program ABB LDO upon a voltage transition
> + *
> + * @abb : ABB instance being programmed
> + * @opp_type : flag for NOMINAL or FAST OPP
> + */
> +static int omap4_abb_set_opp(struct omap_abb_info *abb, int opp_type)
> +{
> + int ret = 0;
> + int timeout;
> +
> + /* program for NOMINAL OPP or FAST OPP */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_OPP_SEL_MASK,
> + (opp_type << OMAP4430_OPP_SEL_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->ctrl_offs);
> +
> + /* clear ABB ldo interrupt status */
> + omap4_prminst_rmw_inst_reg_bits(abb->done_st_mask,
> + (0x0 << abb->done_st_shift), OMAP4430_PRM_PARTITION,
> + OMAP4430_PRM_DEVICE_INST, abb->ctrl_offs);
> +
> + /* enable ABB LDO OPP change */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_OPP_CHANGE_MASK,
> + (0x1 << OMAP4430_OPP_CHANGE_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->ctrl_offs);
> +
A generic struct can be created which has Masks and shifts of all
register offsets like OMAP4430_OPP_CHANGE_MASK
and OMAP3630_ACTIVE_FBB_SEL_MASK whose objects for OMAP3 and OMAP4 can be used.
> + timeout = 0;
> +
> + /* wait until OPP change completes */
> + while ((timeout < ABB_TRANXDONE_TIMEOUT) &&
> + (!(omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION,
> + OMAP4430_PRM_DEVICE_INST,
> + abb->irqstatus_mpu_offs)
> + & abb->done_st_mask))) {
> + udelay(1);
> + timeout++;
> + }
> +
> + if (timeout == ABB_TRANXDONE_TIMEOUT)
> + pr_warning("%s: TRANXDONE timed out waiting for OPP change\n",
> + __func__);
> +
> + timeout = 0;
> +
> + /* Clear all pending TRANXDONE interrupts/status */
> + while (timeout < ABB_TRANXDONE_TIMEOUT) {
> + omap4_prminst_write_inst_reg((1 << abb->done_st_shift),
> + OMAP4430_PRM_PARTITION,
> + OMAP4430_PRM_DEVICE_INST,
> + abb->irqstatus_mpu_offs);
> +
> + if (!(omap4_prminst_read_inst_reg(OMAP4430_PRM_PARTITION,
> + OMAP4430_PRM_DEVICE_INST,
> + abb->irqstatus_mpu_offs)
> + & abb->done_st_mask)) {
> + break;
> +
> + udelay(1);
> + timeout++;
> + }
> + }
> +
> + if (timeout == ABB_TRANXDONE_TIMEOUT) {
> + pr_warning("%s: TRANXDONE timed out trying to clear status\n",
> + __func__);
> + ret = -EBUSY;
> + }
> +
> + return ret;
> +}
> +
> /* OMAP3 specific voltage init functions */
>
> /*
> @@ -789,6 +1009,64 @@ static void __init omap3_vc_init(struct omap_vdd_info *vdd)
> is_initialized = true;
> }
>
> +/**
> + * omap3_abb_configure - per-VDD configuration of ABB
> + *
> + * @abb : abb instance being initialized
> + */
> +static int omap3_abb_configure(struct omap_abb_info *abb)
> +{
> + int ret = 0;
> + u32 sr2_wt_cnt_val;
> + struct clk *sys_ck;
> + struct omap_vdd_info *vdd;
> +
> + if (!abb || IS_ERR(abb)) {
> + pr_warning("%s: invalid abb\n", __func__);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + sys_ck = clk_get(NULL, "sys_ck");
> + if (IS_ERR(sys_ck)) {
> + pr_warning("%s: unable to fetch SYS_CK\n", __func__);
> + ret = -ENODEV;
> + goto out;
> + }
> +
> + vdd = container_of(abb, struct omap_vdd_info, abb);
> +
> + /* LDO settling time */
> + sr2_wt_cnt_val = clk_get_rate(sys_ck);
> + sr2_wt_cnt_val = sr2_wt_cnt_val / 1000000 / 16;
> +
> + omap2_prm_rmw_mod_reg_bits(OMAP3630_SR2_WTCNT_VALUE_MASK,
> + (sr2_wt_cnt_val << OMAP3630_SR2_WTCNT_VALUE_SHIFT),
> + OMAP3430_GR_MOD, abb->setup_offs);
> +
> + /* allow FBB operation */
> + omap2_prm_set_mod_reg_bits(OMAP3630_ACTIVE_FBB_SEL_MASK,
> + OMAP3430_GR_MOD, abb->setup_offs);
> +
> + /* do not allow ACTIVE RBB operation */
> + omap2_prm_set_mod_reg_bits(OMAP3630_ACTIVE_RBB_SEL_MASK,
> + OMAP3430_GR_MOD, abb->setup_offs);
> +
> + /* do not allow SLEEP RBB operation */
> + omap2_prm_set_mod_reg_bits(OMAP3630_SLEEP_RBB_SEL_MASK,
> + OMAP3430_GR_MOD, abb->setup_offs);
> +
> + /* enable ABB LDO */
> + omap2_prm_set_mod_reg_bits(OMAP3630_SR2EN_MASK,
> + OMAP3430_GR_MOD, abb->ctrl_offs);
ABB should n't be enabled in this API rather it should be enabled only
when it goes to FBB/RBB mode
> +
> + /* register the notifier handler */
> + omap_voltage_register_notifier(vdd, &abb->nb);
> +
> +out:
> + return ret;
> +}
> +
> /* Sets up all the VDD related info for OMAP3 */
> static int __init omap3_vdd_data_configure(struct omap_vdd_info *vdd)
> {
> @@ -824,6 +1102,9 @@ static int __init omap3_vdd_data_configure(struct omap_vdd_info *vdd)
> vdd->vc_reg.smps_volra_mask = OMAP3430_VOLRA0_MASK;
> vdd->vc_reg.voltsetup_shift = OMAP3430_SETUP_TIME1_SHIFT;
> vdd->vc_reg.voltsetup_mask = OMAP3430_SETUP_TIME1_MASK;
> +
> + /* configure ABB */
> + vdd->abb.configure(&vdd->abb);
> } else if (!strcmp(vdd->voltdm.name, "core")) {
> if (cpu_is_omap3630())
> vdd->volt_data = omap36xx_vddcore_volt_data;
> @@ -975,6 +1256,73 @@ static void __init omap4_vc_init(struct omap_vdd_info *vdd)
> is_initialized = true;
> }
>
To remove code repetition rather than having 2 APIs for abb_configure,
I believe 1 API which has generic register offsets struct objects for
all platforms
(OMAP3 and OMAP4 for now) can be used.
This would be scalable for OMAP5+ also.
> +/**
> + * omap4_abb_configure - per-VDD configuration of ABB
> + *
> + * @abb : abb instance being initialized
> + */
> +static int omap4_abb_configure(struct omap_abb_info *abb)
> +{
> + int ret = 0;
> + u32 sr2_wt_cnt_val;
> + struct clk *sys_ck;
> + struct omap_vdd_info *vdd;
> +
> + if (!abb || IS_ERR(abb)) {
> + pr_warning("%s: invalid abb\n", __func__);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + sys_ck = clk_get(NULL, "sys_clkin_ck");
> + if (IS_ERR(sys_ck)) {
> + pr_warning("%s: unable to fetch SYS_CK", __func__);
> + ret = -ENODEV;
> + goto out;
> + }
> +
> + vdd = container_of(abb, struct omap_vdd_info, abb);
> +
> + /* LDO settling time */
> + sr2_wt_cnt_val = clk_get_rate(sys_ck);
> + sr2_wt_cnt_val = sr2_wt_cnt_val / 1000000 / 16;
> +
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_SR2_WTCNT_VALUE_MASK,
> + (sr2_wt_cnt_val << OMAP4430_SR2_WTCNT_VALUE_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->setup_offs);
> +
> + /* allow FBB operation */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_ACTIVE_FBB_SEL_MASK,
> + (1 << OMAP4430_ACTIVE_FBB_SEL_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->setup_offs);
> +
> + /* do not allow ACTIVE RBB operation */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_ACTIVE_RBB_SEL_MASK,
> + (0 << OMAP4430_ACTIVE_RBB_SEL_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->setup_offs);
> +
> + /* do not allow SLEEP RBB operation */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_SLEEP_RBB_SEL_MASK,
> + (0 << OMAP4430_SLEEP_RBB_SEL_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->setup_offs);
> +
> + /* enable ABB LDO */
> + omap4_prminst_rmw_inst_reg_bits(OMAP4430_SR2EN_MASK,
> + (1 << OMAP4430_SR2EN_SHIFT),
> + OMAP4430_PRM_PARTITION, OMAP4430_PRM_DEVICE_INST,
> + abb->setup_offs);
Same as above.
> + /* register the notifier handler */
> + omap_voltage_register_notifier(vdd, &abb->nb);
> +
> +out:
> + return ret;
> +}
> +
> /* Sets up all the VDD related info for OMAP4 */
> static int __init omap4_vdd_data_configure(struct omap_vdd_info *vdd)
> {
> @@ -983,8 +1331,8 @@ static int __init omap4_vdd_data_configure(struct omap_vdd_info *vdd)
>
> if (!vdd->pmic_info) {
> pr_err("%s: PMIC info requried to configure vdd_%s not"
> - "populated.Hence cannot initialize vdd_%s\n",
> - __func__, vdd->voltdm.name, vdd->voltdm.name);
> + "populated.Hence cannot initialize vdd_%s\n",
> + __func__, vdd->voltdm.name, vdd->voltdm.name);
> return -EINVAL;
> }
>
> @@ -1005,6 +1353,9 @@ static int __init omap4_vdd_data_configure(struct omap_vdd_info *vdd)
> vdd->vc_reg.voltsetup_reg =
> OMAP4_PRM_VOLTSETUP_MPU_RET_SLEEP_OFFSET;
> vdd->prm_irqst_reg = OMAP4_PRM_IRQSTATUS_MPU_2_OFFSET;
> +
> + /* configure ABB */
> + vdd->abb.configure(&vdd->abb);
> } else if (!strcmp(vdd->voltdm.name, "core")) {
> vdd->volt_data = omap44xx_vdd_core_volt_data;
> vdd->vp_reg.tranxdone_status =
> @@ -1032,6 +1383,9 @@ static int __init omap4_vdd_data_configure(struct omap_vdd_info *vdd)
> vdd->vc_reg.voltsetup_reg =
> OMAP4_PRM_VOLTSETUP_IVA_RET_SLEEP_OFFSET;
> vdd->prm_irqst_reg = OMAP4_PRM_IRQSTATUS_MPU_OFFSET;
> +
> + /* configure ABB */
> + vdd->abb.configure(&vdd->abb);
> } else {
> pr_warning("%s: vdd_%s does not exisit in OMAP4\n",
> __func__, vdd->voltdm.name);
> @@ -1299,6 +1653,7 @@ int omap_voltage_scale_vdd(struct voltagedomain *voltdm,
>
> /* load notifier chain data */
> v_info.target_volt = target_volt;
> + v_info.curr_volt = vdd->curr_volt;
> v_info.vdd = vdd;
>
> srcu_notifier_call_chain(&vdd->volt_change_notify_chain,
> diff --git a/arch/arm/plat-omap/include/plat/voltage.h b/arch/arm/plat-omap/include/plat/voltage.h
> index af790bf..07997f7 100644
> --- a/arch/arm/plat-omap/include/plat/voltage.h
> +++ b/arch/arm/plat-omap/include/plat/voltage.h
> @@ -235,8 +235,8 @@ struct omap_vdd_dep_info {
> * @irqstatus_mpu_offs : PRM_IRQSTATUS_MPU* register offset
> * @done_st_shift : ABB_vdd_DONE_ST shift
> * @done_st_mask : ABB_vdd_DONE_ST bit mask
> + * @nb : voltage transition notifier block
> * @configure : boot-time configuration
> - * @nb_handler : voltage transition notification handler
> * @set_opp : transition function called from nb_handler
> */
> struct omap_abb_info {
> @@ -245,9 +245,8 @@ struct omap_abb_info {
> u8 irqstatus_mpu_offs;
> u8 done_st_shift;
> u32 done_st_mask;
> + struct notifier_block nb;
> int (*configure) (struct omap_abb_info *abb);
> - int (*nb_handler) (struct notifier_block *nb, unsigned long val,
> - void *data);
> int (*set_opp) (struct omap_abb_info *abb, int opp_type);
> };
>
> @@ -302,6 +301,7 @@ struct omap_vdd_info {
> */
> struct omap_volt_change_info {
> unsigned long target_volt;
> + unsigned long curr_volt;
> struct omap_vdd_info *vdd;
> };
>
> --
> 1.7.1
>
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Thanks,
Regards,
Shweta
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