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Date: Mon, 18 Jan 2021 12:34:01 +0100
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org,
Guido Günther <agx@...xcpu.org>,
Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
Mark Brown <broonie@...nel.org>,
Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.10 066/152] regulator: bd718x7: Add enable times
From: Guido Günther <agx@...xcpu.org>
[ Upstream commit 3b66e4a8e58a85af3212c7117d7a29c9ef6679a2 ]
Use the typical startup times from the data sheet so boards get a
reasonable default. Not setting any enable time can lead to board hangs
when e.g. clocks are enabled too soon afterwards.
This fixes gpu power domain resume on the Librem 5.
[Moved #defines into driver, seems to be general agreement and avoids any
cross tree issues -- broonie]
Signed-off-by: Guido Günther <agx@...xcpu.org>
Reviewed-by: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>
Link: https://lore.kernel.org/r/41fb2ed19f584f138336344e2297ae7301f72b75.1608316658.git.agx@sigxcpu.org
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
drivers/regulator/bd718x7-regulator.c | 57 +++++++++++++++++++++++++++
1 file changed, 57 insertions(+)
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index 0774467994fbe..3333b8905f1b7 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -15,6 +15,36 @@
#include <linux/regulator/of_regulator.h>
#include <linux/slab.h>
+/* Typical regulator startup times as per data sheet in uS */
+#define BD71847_BUCK1_STARTUP_TIME 144
+#define BD71847_BUCK2_STARTUP_TIME 162
+#define BD71847_BUCK3_STARTUP_TIME 162
+#define BD71847_BUCK4_STARTUP_TIME 240
+#define BD71847_BUCK5_STARTUP_TIME 270
+#define BD71847_BUCK6_STARTUP_TIME 200
+#define BD71847_LDO1_STARTUP_TIME 440
+#define BD71847_LDO2_STARTUP_TIME 370
+#define BD71847_LDO3_STARTUP_TIME 310
+#define BD71847_LDO4_STARTUP_TIME 400
+#define BD71847_LDO5_STARTUP_TIME 530
+#define BD71847_LDO6_STARTUP_TIME 400
+
+#define BD71837_BUCK1_STARTUP_TIME 160
+#define BD71837_BUCK2_STARTUP_TIME 180
+#define BD71837_BUCK3_STARTUP_TIME 180
+#define BD71837_BUCK4_STARTUP_TIME 180
+#define BD71837_BUCK5_STARTUP_TIME 160
+#define BD71837_BUCK6_STARTUP_TIME 240
+#define BD71837_BUCK7_STARTUP_TIME 220
+#define BD71837_BUCK8_STARTUP_TIME 200
+#define BD71837_LDO1_STARTUP_TIME 440
+#define BD71837_LDO2_STARTUP_TIME 370
+#define BD71837_LDO3_STARTUP_TIME 310
+#define BD71837_LDO4_STARTUP_TIME 400
+#define BD71837_LDO5_STARTUP_TIME 310
+#define BD71837_LDO6_STARTUP_TIME 400
+#define BD71837_LDO7_STARTUP_TIME 530
+
/*
* BD718(37/47/50) have two "enable control modes". ON/OFF can either be
* controlled by software - or by PMIC internal HW state machine. Whether
@@ -613,6 +643,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK1_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -646,6 +677,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK2_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -680,6 +712,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.linear_range_selectors = bd71847_buck3_volt_range_sel,
.enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -706,6 +739,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_range_mask = BD71847_BUCK4_RANGE_MASK,
.linear_range_selectors = bd71847_buck4_volt_range_sel,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -727,6 +761,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -750,6 +785,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71847_BUCK6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -775,6 +811,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.linear_range_selectors = bd718xx_ldo1_volt_range_sel,
.enable_reg = BD718XX_REG_LDO1_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO1_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -796,6 +833,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.n_voltages = ARRAY_SIZE(ldo_2_volts),
.enable_reg = BD718XX_REG_LDO2_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO2_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -818,6 +856,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = BD718XX_LDO3_MASK,
.enable_reg = BD718XX_REG_LDO3_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -840,6 +879,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = BD718XX_LDO4_MASK,
.enable_reg = BD718XX_REG_LDO4_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -865,6 +905,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.linear_range_selectors = bd71847_ldo5_volt_range_sel,
.enable_reg = BD718XX_REG_LDO5_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -889,6 +930,7 @@ static struct bd718xx_regulator_data bd71847_regulators[] = {
.vsel_mask = BD718XX_LDO6_MASK,
.enable_reg = BD718XX_REG_LDO6_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71847_LDO6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -942,6 +984,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK1_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK1_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -975,6 +1018,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD718XX_REG_BUCK2_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK2_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1005,6 +1049,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD71837_REG_BUCK3_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK3_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1033,6 +1078,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = DVS_BUCK_RUN_MASK,
.enable_reg = BD71837_REG_BUCK4_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK4_STARTUP_TIME,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1065,6 +1111,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.linear_range_selectors = bd71837_buck5_volt_range_sel,
.enable_reg = BD718XX_REG_1ST_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1088,6 +1135,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD71837_BUCK6_MASK,
.enable_reg = BD718XX_REG_2ND_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1109,6 +1157,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD718XX_3RD_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_3RD_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK7_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1132,6 +1181,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD718XX_4TH_NODVS_BUCK_MASK,
.enable_reg = BD718XX_REG_4TH_NODVS_BUCK_CTRL,
.enable_mask = BD718XX_BUCK_EN,
+ .enable_time = BD71837_BUCK8_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1157,6 +1207,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.linear_range_selectors = bd718xx_ldo1_volt_range_sel,
.enable_reg = BD718XX_REG_LDO1_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO1_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1178,6 +1229,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.n_voltages = ARRAY_SIZE(ldo_2_volts),
.enable_reg = BD718XX_REG_LDO2_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO2_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1200,6 +1252,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD718XX_LDO3_MASK,
.enable_reg = BD718XX_REG_LDO3_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO3_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1222,6 +1275,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD718XX_LDO4_MASK,
.enable_reg = BD718XX_REG_LDO4_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO4_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1246,6 +1300,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD71837_LDO5_MASK,
.enable_reg = BD718XX_REG_LDO5_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO5_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1272,6 +1327,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD718XX_LDO6_MASK,
.enable_reg = BD718XX_REG_LDO6_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO6_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
@@ -1296,6 +1352,7 @@ static struct bd718xx_regulator_data bd71837_regulators[] = {
.vsel_mask = BD71837_LDO7_MASK,
.enable_reg = BD71837_REG_LDO7_VOLT,
.enable_mask = BD718XX_LDO_EN,
+ .enable_time = BD71837_LDO7_STARTUP_TIME,
.owner = THIS_MODULE,
},
.init = {
--
2.27.0
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