Merge "regulator: cpr3: Use default step_quot during corner switch" into msm-4.9
diff --git a/Documentation/devicetree/bindings/regulator/cpr3-regulator.txt b/Documentation/devicetree/bindings/regulator/cpr3-regulator.txt
index 5bf560e..846bd22 100644
--- a/Documentation/devicetree/bindings/regulator/cpr3-regulator.txt
+++ b/Documentation/devicetree/bindings/regulator/cpr3-regulator.txt
@@ -216,6 +216,15 @@
as the corresponding addresses are specified in
the qcom,cpr-panic-reg-addr-list property.
+- qcom,cpr-reset-step-quot-loop-en
+ Usage: optional; only meaningful for CPR4 and CPRh controllers
+ Value type: <empty>
+ Definition: Boolean value which indicates that the CPR controller should
+ be configured to reset step_quot on each loop_en = 0
+ transition. This configuration allows the CPR controller to
+ first use the default step_quot and then later switch to the
+ run-time calibrated step_quot.
+
- qcom,saw-avs-ctrl
Usage: required if "saw" registers are specified by reg and
reg-names properties
diff --git a/drivers/regulator/cpr3-regulator.c b/drivers/regulator/cpr3-regulator.c
index 9566e24..c45fb0d 100644
--- a/drivers/regulator/cpr3-regulator.c
+++ b/drivers/regulator/cpr3-regulator.c
@@ -177,6 +177,7 @@
#define CPR4_CPR_TIMER_CLAMP_THREAD_AGGREGATION_EN BIT(27)
#define CPR4_REG_MISC 0x700
+#define CPR4_MISC_RESET_STEP_QUOT_LOOP_EN BIT(2)
#define CPR4_MISC_MARGIN_TABLE_ROW_SELECT_MASK GENMASK(23, 20)
#define CPR4_MISC_MARGIN_TABLE_ROW_SELECT_SHIFT 20
#define CPR4_MISC_TEMP_SENSOR_ID_START_MASK GENMASK(27, 24)
@@ -723,6 +724,11 @@
int thread_id = 0;
u64 temp;
+ if (ctrl->reset_step_quot_loop_en)
+ cpr3_masked_write(ctrl, CPR4_REG_MISC,
+ CPR4_MISC_RESET_STEP_QUOT_LOOP_EN,
+ CPR4_MISC_RESET_STEP_QUOT_LOOP_EN);
+
if (ctrl->supports_hw_closed_loop) {
if (ctrl->saw_use_unit_mV)
pmic_step_size = ctrl->step_volt / 1000;
@@ -1355,6 +1361,11 @@
}
}
+ if (ctrl->reset_step_quot_loop_en)
+ cpr3_masked_write(ctrl, CPR4_REG_MISC,
+ CPR4_MISC_RESET_STEP_QUOT_LOOP_EN,
+ CPR4_MISC_RESET_STEP_QUOT_LOOP_EN);
+
if (ctrl->saw_use_unit_mV)
pmic_step_size = ctrl->step_volt / 1000;
cpr3_masked_write(ctrl, CPR4_REG_MARGIN_ADJ_CTL,
diff --git a/drivers/regulator/cpr3-regulator.h b/drivers/regulator/cpr3-regulator.h
index 570ddfc..8535020 100644
--- a/drivers/regulator/cpr3-regulator.h
+++ b/drivers/regulator/cpr3-regulator.h
@@ -756,6 +756,12 @@
* @panic_notifier: Notifier block registered to global panic notifier list.
* @support_ldo300_vreg: Boolean value which indicates that this CPR controller
* manages an underlying LDO regulator of type LDO300.
+ * @reset_step_quot_loop_en: Boolean value which indicates that this CPR
+ * controller should be configured to reset step_quot on
+ * each loop_en = 0 transition. This configuration allows
+ * the CPR controller to first use the default step_quot
+ * and then later switch to the run-time calibrated
+ * step_quot.
*
* This structure contains both configuration and runtime state data. The
* elements cpr_allowed_sw, use_hw_closed_loop, aggr_corner, cpr_enabled,
@@ -866,6 +872,7 @@
struct cpr3_panic_regs_info *panic_regs_info;
struct notifier_block panic_notifier;
bool support_ldo300_vreg;
+ bool reset_step_quot_loop_en;
};
/* Used for rounding voltages to the closest physically available set point. */
diff --git a/drivers/regulator/cpr3-util.c b/drivers/regulator/cpr3-util.c
index 648d396..3035155 100644
--- a/drivers/regulator/cpr3-util.c
+++ b/drivers/regulator/cpr3-util.c
@@ -1224,6 +1224,14 @@
}
/*
+ * Reset step_quot to default on each loop_en = 0 transition is
+ * optional.
+ */
+ ctrl->reset_step_quot_loop_en
+ = of_property_read_bool(ctrl->dev->of_node,
+ "qcom,cpr-reset-step-quot-loop-en");
+
+ /*
* Regulator device handles are not necessary for CPRh controllers
* since communication with the regulators is completely managed
* in hardware.