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Date: Wed, 16 Dec 2020 12:05:54 +0100
From: Guido Günther <agx@...xcpu.org>
To: Matti Vaittinen <matti.vaittinen@...rohmeurope.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, linux-power@...rohmeurope.com,
linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] regulators: bd718x7: Add enable times
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.
Signed-off-by: Guido Günther <agx@...xcpu.org>
---
drivers/regulator/bd718x7-regulator.c | 27 +++++++++++++++++++++++++++
1 file changed, 27 insertions(+)
diff --git a/drivers/regulator/bd718x7-regulator.c b/drivers/regulator/bd718x7-regulator.c
index e6d5d98c3cea..d6d34aa4ee2e 100644
--- a/drivers/regulator/bd718x7-regulator.c
+++ b/drivers/regulator/bd718x7-regulator.c
@@ -613,6 +613,7 @@ 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 = 144,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -646,6 +647,7 @@ 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 = 162,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -680,6 +682,7 @@ 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 = 162,
.owner = THIS_MODULE,
},
.init = {
@@ -706,6 +709,7 @@ 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 = 240,
.owner = THIS_MODULE,
},
.init = {
@@ -727,6 +731,7 @@ 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 = 220,
.owner = THIS_MODULE,
},
.init = {
@@ -750,6 +755,7 @@ 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 = 200,
.owner = THIS_MODULE,
},
.init = {
@@ -775,6 +781,7 @@ 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 = 440,
.owner = THIS_MODULE,
},
.init = {
@@ -796,6 +803,7 @@ 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 = 370,
.owner = THIS_MODULE,
},
.init = {
@@ -818,6 +826,7 @@ 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 = 310,
.owner = THIS_MODULE,
},
.init = {
@@ -840,6 +849,7 @@ 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 = 400,
.owner = THIS_MODULE,
},
.init = {
@@ -865,6 +875,7 @@ 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 = 530,
.owner = THIS_MODULE,
},
.init = {
@@ -889,6 +900,7 @@ 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 = 400,
.owner = THIS_MODULE,
},
.init = {
@@ -942,6 +954,7 @@ 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 = 160,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -975,6 +988,7 @@ 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 = 180,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1005,6 +1019,7 @@ 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 = 180,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1033,6 +1048,7 @@ 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 = 180,
.owner = THIS_MODULE,
.of_parse_cb = buck_set_hw_dvs_levels,
},
@@ -1065,6 +1081,7 @@ 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 = 160,
.owner = THIS_MODULE,
},
.init = {
@@ -1088,6 +1105,7 @@ 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 = 240,
.owner = THIS_MODULE,
},
.init = {
@@ -1109,6 +1127,7 @@ 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 = 220,
.owner = THIS_MODULE,
},
.init = {
@@ -1132,6 +1151,7 @@ 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 = 200,
.owner = THIS_MODULE,
},
.init = {
@@ -1157,6 +1177,7 @@ 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 = 440,
.owner = THIS_MODULE,
},
.init = {
@@ -1178,6 +1199,7 @@ 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 = 370,
.owner = THIS_MODULE,
},
.init = {
@@ -1200,6 +1222,7 @@ 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 = 310,
.owner = THIS_MODULE,
},
.init = {
@@ -1222,6 +1245,7 @@ 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 = 400,
.owner = THIS_MODULE,
},
.init = {
@@ -1246,6 +1270,7 @@ 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 = 310,
.owner = THIS_MODULE,
},
.init = {
@@ -1272,6 +1297,7 @@ 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 = 400,
.owner = THIS_MODULE,
},
.init = {
@@ -1296,6 +1322,7 @@ 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 = 530,
.owner = THIS_MODULE,
},
.init = {
--
2.29.2
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