* [PATCH 3/3] regulator: Add regulator driver for Unisoc SC2730 PMIC
2026-02-20 17:01 [PATCH 0/3] regulator: Add support for Unisoc SC2730 PMIC regulators Otto Pflüger
2026-02-20 17:01 ` [PATCH 1/3] dt-bindings: regulator: Document Unisoc SC2730 PMIC bindings Otto Pflüger
2026-02-20 17:01 ` [PATCH 2/3] dt-bindings: mfd: sprd,sc2731: Reference sprd,sc2730-regulator bindings Otto Pflüger
@ 2026-02-20 17:01 ` Otto Pflüger
2026-02-24 6:28 ` Baolin Wang
2 siblings, 1 reply; 9+ messages in thread
From: Otto Pflüger @ 2026-02-20 17:01 UTC (permalink / raw)
To: Liam Girdwood, Mark Brown, Rob Herring, Krzysztof Kozlowski,
Conor Dooley, Orson Zhai, Baolin Wang, Chunyan Zhang, Lee Jones
Cc: linux-kernel, devicetree, Otto Pflüger
Add a regulator driver for the Spreadtrum/Unisoc SC2730 PMIC, used
e.g. with the UMS512 and UMS9230 SoCs. This version of the driver is
based on a downstream driver provided by Unisoc [1] and the existing
SC2731 driver.
Signed-off-by: Otto Pflüger <otto.pflueger@abscue.de>
[1]: https://github.com/MotorolaMobilityLLC/kernel-sprd/blob/android-13-release-tla33/drivers/regulator/sc2730-regulator.c
---
drivers/regulator/Kconfig | 7 +
drivers/regulator/Makefile | 1 +
drivers/regulator/sc2730-regulator.c | 419 +++++++++++++++++++++++++++++++++++
3 files changed, 427 insertions(+)
diff --git a/drivers/regulator/Kconfig b/drivers/regulator/Kconfig
index a708fc63f581..d152d4f7995d 100644
--- a/drivers/regulator/Kconfig
+++ b/drivers/regulator/Kconfig
@@ -1484,6 +1484,13 @@ config REGULATOR_S5M8767
via I2C bus. S5M8767A have 9 Bucks and 28 LDOs output and
supports DVS mode with 8bits of output voltage control.
+config REGULATOR_SC2730
+ tristate "Spreadtrum SC2730 power regulator driver"
+ depends on MFD_SC27XX_PMIC || COMPILE_TEST
+ help
+ This driver provides support for the voltage regulators on the
+ SC2730 PMIC.
+
config REGULATOR_SC2731
tristate "Spreadtrum SC2731 power regulator driver"
depends on MFD_SC27XX_PMIC || COMPILE_TEST
diff --git a/drivers/regulator/Makefile b/drivers/regulator/Makefile
index 35639f3115fd..9de6f1347d14 100644
--- a/drivers/regulator/Makefile
+++ b/drivers/regulator/Makefile
@@ -171,6 +171,7 @@ obj-$(CONFIG_REGULATOR_S2DOS05) += s2dos05-regulator.o
obj-$(CONFIG_REGULATOR_S2MPA01) += s2mpa01.o
obj-$(CONFIG_REGULATOR_S2MPS11) += s2mps11.o
obj-$(CONFIG_REGULATOR_S5M8767) += s5m8767.o
+obj-$(CONFIG_REGULATOR_SC2730) += sc2730-regulator.o
obj-$(CONFIG_REGULATOR_SC2731) += sc2731-regulator.o
obj-$(CONFIG_REGULATOR_SKY81452) += sky81452-regulator.o
obj-$(CONFIG_REGULATOR_SLG51000) += slg51000-regulator.o
diff --git a/drivers/regulator/sc2730-regulator.c b/drivers/regulator/sc2730-regulator.c
new file mode 100644
index 000000000000..b1f34fe67dc9
--- /dev/null
+++ b/drivers/regulator/sc2730-regulator.c
@@ -0,0 +1,419 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2018 Spreadtrum Communications Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/of_regulator.h>
+
+/*
+ * SC2730 regulator base address
+ */
+#define SC2730_REGULATOR_BASE 0x1800
+
+/*
+ * SC2730 regulator lock register
+ */
+#define SC2730_WR_UNLOCK_VALUE 0x6e7f
+#define SC2730_PWR_WR_PROT (SC2730_REGULATOR_BASE + 0x3d0)
+
+/*
+ * SC2730 enable register
+ */
+#define SC2730_POWER_PD_SW (SC2730_REGULATOR_BASE + 0x01c)
+#define SC2730_LDO_VDDRF18_PD (SC2730_REGULATOR_BASE + 0x10c)
+#define SC2730_LDO_VDDCAMIO_PD (SC2730_REGULATOR_BASE + 0x118)
+#define SC2730_LDO_VDDWCN_PD (SC2730_REGULATOR_BASE + 0x11c)
+#define SC2730_LDO_VDDCAMD1_PD (SC2730_REGULATOR_BASE + 0x128)
+#define SC2730_LDO_VDDCAMD0_PD (SC2730_REGULATOR_BASE + 0x134)
+#define SC2730_LDO_VDDRF1V25_PD (SC2730_REGULATOR_BASE + 0x140)
+#define SC2730_LDO_AVDD12_PD (SC2730_REGULATOR_BASE + 0x14c)
+#define SC2730_LDO_VDDCAMA0_PD (SC2730_REGULATOR_BASE + 0x158)
+#define SC2730_LDO_VDDCAMA1_PD (SC2730_REGULATOR_BASE + 0x164)
+#define SC2730_LDO_VDDCAMMOT_PD (SC2730_REGULATOR_BASE + 0x170)
+#define SC2730_LDO_VDDSIM2_PD (SC2730_REGULATOR_BASE + 0x194)
+#define SC2730_LDO_VDDEMMCCORE_PD (SC2730_REGULATOR_BASE + 0x1a0)
+#define SC2730_LDO_VDDSDCORE_PD (SC2730_REGULATOR_BASE + 0x1ac)
+#define SC2730_LDO_VDDSDIO_PD (SC2730_REGULATOR_BASE + 0x1b8)
+#define SC2730_LDO_VDDWIFIPA_PD (SC2730_REGULATOR_BASE + 0x1d0)
+#define SC2730_LDO_VDDUSB33_PD (SC2730_REGULATOR_BASE + 0x1e8)
+#define SC2730_LDO_VDDLDO0_PD (SC2730_REGULATOR_BASE + 0x1f4)
+#define SC2730_LDO_VDDLDO1_PD (SC2730_REGULATOR_BASE + 0x200)
+#define SC2730_LDO_VDDLDO2_PD (SC2730_REGULATOR_BASE + 0x20c)
+#define SC2730_LDO_VDDKPLED_PD (SC2730_REGULATOR_BASE + 0x38c)
+
+/*
+ * SC2730 enable mask
+ */
+#define SC2730_DCDC_CPU_PD_MASK BIT(4)
+#define SC2730_DCDC_GPU_PD_MASK BIT(3)
+#define SC2730_DCDC_CORE_PD_MASK BIT(5)
+#define SC2730_DCDC_MODEM_PD_MASK BIT(11)
+#define SC2730_DCDC_MEM_PD_MASK BIT(6)
+#define SC2730_DCDC_MEMQ_PD_MASK BIT(12)
+#define SC2730_DCDC_GEN0_PD_MASK BIT(8)
+#define SC2730_DCDC_GEN1_PD_MASK BIT(7)
+#define SC2730_DCDC_SRAM_PD_MASK BIT(13)
+#define SC2730_LDO_AVDD18_PD_MASK BIT(2)
+#define SC2730_LDO_VDDRF18_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMIO_PD_MASK BIT(0)
+#define SC2730_LDO_VDDWCN_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMD1_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMD0_PD_MASK BIT(0)
+#define SC2730_LDO_VDDRF1V25_PD_MASK BIT(0)
+#define SC2730_LDO_AVDD12_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMA0_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMA1_PD_MASK BIT(0)
+#define SC2730_LDO_VDDCAMMOT_PD_MASK BIT(0)
+#define SC2730_LDO_VDDSIM2_PD_MASK BIT(0)
+#define SC2730_LDO_VDDEMMCCORE_PD_MASK BIT(0)
+#define SC2730_LDO_VDDSDCORE_PD_MASK BIT(0)
+#define SC2730_LDO_VDDSDIO_PD_MASK BIT(0)
+#define SC2730_LDO_VDD28_PD_MASK BIT(1)
+#define SC2730_LDO_VDDWIFIPA_PD_MASK BIT(0)
+#define SC2730_LDO_VDD18_DCXO_PD_MASK BIT(10)
+#define SC2730_LDO_VDDUSB33_PD_MASK BIT(0)
+#define SC2730_LDO_VDDLDO0_PD_MASK BIT(0)
+#define SC2730_LDO_VDDLDO1_PD_MASK BIT(0)
+#define SC2730_LDO_VDDLDO2_PD_MASK BIT(0)
+#define SC2730_LDO_VDDKPLED_PD_MASK BIT(15)
+
+/*
+ * SC2730 vsel register
+ */
+#define SC2730_DCDC_CPU_VOL (SC2730_REGULATOR_BASE + 0x44)
+#define SC2730_DCDC_GPU_VOL (SC2730_REGULATOR_BASE + 0x54)
+#define SC2730_DCDC_CORE_VOL (SC2730_REGULATOR_BASE + 0x64)
+#define SC2730_DCDC_MODEM_VOL (SC2730_REGULATOR_BASE + 0x74)
+#define SC2730_DCDC_MEM_VOL (SC2730_REGULATOR_BASE + 0x84)
+#define SC2730_DCDC_MEMQ_VOL (SC2730_REGULATOR_BASE + 0x94)
+#define SC2730_DCDC_GEN0_VOL (SC2730_REGULATOR_BASE + 0xa4)
+#define SC2730_DCDC_GEN1_VOL (SC2730_REGULATOR_BASE + 0xb4)
+#define SC2730_DCDC_SRAM_VOL (SC2730_REGULATOR_BASE + 0xdc)
+#define SC2730_LDO_AVDD18_VOL (SC2730_REGULATOR_BASE + 0x104)
+#define SC2730_LDO_VDDRF18_VOL (SC2730_REGULATOR_BASE + 0x110)
+#define SC2730_LDO_VDDCAMIO_VOL (SC2730_REGULATOR_BASE + 0x28)
+#define SC2730_LDO_VDDWCN_VOL (SC2730_REGULATOR_BASE + 0x120)
+#define SC2730_LDO_VDDCAMD1_VOL (SC2730_REGULATOR_BASE + 0x12c)
+#define SC2730_LDO_VDDCAMD0_VOL (SC2730_REGULATOR_BASE + 0x138)
+#define SC2730_LDO_VDDRF1V25_VOL (SC2730_REGULATOR_BASE + 0x144)
+#define SC2730_LDO_AVDD12_VOL (SC2730_REGULATOR_BASE + 0x150)
+#define SC2730_LDO_VDDCAMA0_VOL (SC2730_REGULATOR_BASE + 0x15c)
+#define SC2730_LDO_VDDCAMA1_VOL (SC2730_REGULATOR_BASE + 0x168)
+#define SC2730_LDO_VDDCAMMOT_VOL (SC2730_REGULATOR_BASE + 0x174)
+#define SC2730_LDO_VDDSIM2_VOL (SC2730_REGULATOR_BASE + 0x198)
+#define SC2730_LDO_VDDEMMCCORE_VOL (SC2730_REGULATOR_BASE + 0x1a4)
+#define SC2730_LDO_VDDSDCORE_VOL (SC2730_REGULATOR_BASE + 0x1b0)
+#define SC2730_LDO_VDDSDIO_VOL (SC2730_REGULATOR_BASE + 0x1bc)
+#define SC2730_LDO_VDD28_VOL (SC2730_REGULATOR_BASE + 0x1c8)
+#define SC2730_LDO_VDDWIFIPA_VOL (SC2730_REGULATOR_BASE + 0x1d4)
+#define SC2730_LDO_VDD18_DCXO_VOL (SC2730_REGULATOR_BASE + 0x1e0)
+#define SC2730_LDO_VDDUSB33_VOL (SC2730_REGULATOR_BASE + 0x1ec)
+#define SC2730_LDO_VDDLDO0_VOL (SC2730_REGULATOR_BASE + 0x1f8)
+#define SC2730_LDO_VDDLDO1_VOL (SC2730_REGULATOR_BASE + 0x204)
+#define SC2730_LDO_VDDLDO2_VOL (SC2730_REGULATOR_BASE + 0x210)
+#define SC2730_LDO_VDDKPLED_VOL (SC2730_REGULATOR_BASE + 0x38c)
+
+/*
+ * SC2730 vsel register mask
+ */
+#define SC2730_DCDC_CPU_VOL_MASK GENMASK(8, 0)
+#define SC2730_DCDC_GPU_VOL_MASK GENMASK(8, 0)
+#define SC2730_DCDC_CORE_VOL_MASK GENMASK(8, 0)
+#define SC2730_DCDC_MODEM_VOL_MASK GENMASK(8, 0)
+#define SC2730_DCDC_MEM_VOL_MASK GENMASK(7, 0)
+#define SC2730_DCDC_MEMQ_VOL_MASK GENMASK(8, 0)
+#define SC2730_DCDC_GEN0_VOL_MASK GENMASK(7, 0)
+#define SC2730_DCDC_GEN1_VOL_MASK GENMASK(7, 0)
+#define SC2730_DCDC_SRAM_VOL_MASK GENMASK(8, 0)
+#define SC2730_LDO_AVDD18_VOL_MASK GENMASK(5, 0)
+#define SC2730_LDO_VDDRF18_VOL_MASK GENMASK(5, 0)
+#define SC2730_LDO_VDDCAMIO_VOL_MASK GENMASK(5, 0)
+#define SC2730_LDO_VDDWCN_VOL_MASK GENMASK(5, 0)
+#define SC2730_LDO_VDDCAMD1_VOL_MASK GENMASK(4, 0)
+#define SC2730_LDO_VDDCAMD0_VOL_MASK GENMASK(4, 0)
+#define SC2730_LDO_VDDRF1V25_VOL_MASK GENMASK(4, 0)
+#define SC2730_LDO_AVDD12_VOL_MASK GENMASK(4, 0)
+#define SC2730_LDO_VDDCAMA0_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDCAMA1_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDCAMMOT_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDSIM2_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDEMMCCORE_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDSDCORE_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDSDIO_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDD28_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDWIFIPA_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDD18_DCXO_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDUSB33_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDLDO0_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDLDO1_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDLDO2_VOL_MASK GENMASK(7, 0)
+#define SC2730_LDO_VDDKPLED_VOL_MASK GENMASK(14, 7)
+
+enum sc2730_regulator_id {
+ SC2730_DCDC_CPU,
+ SC2730_DCDC_GPU,
+ SC2730_DCDC_CORE,
+ SC2730_DCDC_MODEM,
+ SC2730_DCDC_MEM,
+ SC2730_DCDC_MEMQ,
+ SC2730_DCDC_GEN0,
+ SC2730_DCDC_GEN1,
+ SC2730_DCDC_SRAM,
+ SC2730_LDO_AVDD18,
+ SC2730_LDO_VDDRF18,
+ SC2730_LDO_VDDCAMIO,
+ SC2730_LDO_VDDWCN,
+ SC2730_LDO_VDDCAMD1,
+ SC2730_LDO_VDDCAMD0,
+ SC2730_LDO_VDDRF1V25,
+ SC2730_LDO_AVDD12,
+ SC2730_LDO_VDDCAMA0,
+ SC2730_LDO_VDDCAMA1,
+ SC2730_LDO_VDDCAMMOT,
+ SC2730_LDO_VDDSIM0,
+ SC2730_LDO_VDDSIM1,
+ SC2730_LDO_VDDSIM2,
+ SC2730_LDO_VDDEMMCCORE,
+ SC2730_LDO_VDDSDCORE,
+ SC2730_LDO_VDDSDIO,
+ SC2730_LDO_VDD28,
+ SC2730_LDO_VDDWIFIPA,
+ SC2730_LDO_VDD18_DCXO,
+ SC2730_LDO_VDDUSB33,
+ SC2730_LDO_VDDLDO0,
+ SC2730_LDO_VDDLDO1,
+ SC2730_LDO_VDDLDO2,
+ SC2730_LDO_VDDKPLED,
+};
+
+static const struct regulator_ops sc2730_regu_linear_ops = {
+ .enable = regulator_enable_regmap,
+ .disable = regulator_disable_regmap,
+ .is_enabled = regulator_is_enabled_regmap,
+ .list_voltage = regulator_list_voltage_linear,
+ .get_voltage_sel = regulator_get_voltage_sel_regmap,
+ .set_voltage_sel = regulator_set_voltage_sel_regmap,
+};
+
+#define SC2730_REGU_LINEAR(_id, en_reg, en_mask, vreg, vmask, \
+ vstep, vmin, vmax, min_sel) { \
+ .name = #_id, \
+ .of_match = of_match_ptr(#_id), \
+ .ops = &sc2730_regu_linear_ops, \
+ .type = REGULATOR_VOLTAGE, \
+ .id = SC2730_##_id, \
+ .owner = THIS_MODULE, \
+ .min_uV = vmin, \
+ .n_voltages = ((vmax) - (vmin)) / (vstep) + 1, \
+ .uV_step = vstep, \
+ .enable_is_inverted = true, \
+ .enable_val = 0, \
+ .enable_reg = en_reg, \
+ .enable_mask = en_mask, \
+ .vsel_reg = vreg, \
+ .vsel_mask = vmask, \
+ .linear_min_sel = min_sel, \
+}
+
+static const struct regulator_desc regulators[] = {
+ SC2730_REGU_LINEAR(DCDC_CPU, SC2730_POWER_PD_SW,
+ SC2730_DCDC_CPU_PD_MASK, SC2730_DCDC_CPU_VOL,
+ SC2730_DCDC_CPU_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_GPU, SC2730_POWER_PD_SW,
+ SC2730_DCDC_GPU_PD_MASK, SC2730_DCDC_GPU_VOL,
+ SC2730_DCDC_GPU_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_CORE, SC2730_POWER_PD_SW,
+ SC2730_DCDC_CORE_PD_MASK, SC2730_DCDC_CORE_VOL,
+ SC2730_DCDC_CORE_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_MODEM, SC2730_POWER_PD_SW,
+ SC2730_DCDC_MODEM_PD_MASK, SC2730_DCDC_MODEM_VOL,
+ SC2730_DCDC_MODEM_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_MEM, SC2730_POWER_PD_SW,
+ SC2730_DCDC_MEM_PD_MASK, SC2730_DCDC_MEM_VOL,
+ SC2730_DCDC_MEM_VOL_MASK, 6250, 0, 1593750,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_MEMQ, SC2730_POWER_PD_SW,
+ SC2730_DCDC_MEMQ_PD_MASK, SC2730_DCDC_MEMQ_VOL,
+ SC2730_DCDC_MEMQ_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_GEN0, SC2730_POWER_PD_SW,
+ SC2730_DCDC_GEN0_PD_MASK, SC2730_DCDC_GEN0_VOL,
+ SC2730_DCDC_GEN0_VOL_MASK, 9375, 20000, 2410625,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_GEN1, SC2730_POWER_PD_SW,
+ SC2730_DCDC_GEN1_PD_MASK, SC2730_DCDC_GEN1_VOL,
+ SC2730_DCDC_GEN1_VOL_MASK, 6250, 50000, 1643750,
+ 0),
+ SC2730_REGU_LINEAR(DCDC_SRAM, SC2730_POWER_PD_SW,
+ SC2730_DCDC_SRAM_PD_MASK, SC2730_DCDC_SRAM_VOL,
+ SC2730_DCDC_SRAM_VOL_MASK, 3125, 0, 1596875,
+ 0),
+ SC2730_REGU_LINEAR(LDO_AVDD18, SC2730_POWER_PD_SW,
+ SC2730_LDO_AVDD18_PD_MASK, SC2730_LDO_AVDD18_VOL,
+ SC2730_LDO_AVDD18_VOL_MASK, 10000, 1175000, 1805000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDRF18, SC2730_LDO_VDDRF18_PD,
+ SC2730_LDO_VDDRF18_PD_MASK, SC2730_LDO_VDDRF18_VOL,
+ SC2730_LDO_VDDRF18_VOL_MASK, 10000, 1175000, 1805000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMIO, SC2730_LDO_VDDCAMIO_PD,
+ SC2730_LDO_VDDCAMIO_PD_MASK, SC2730_LDO_VDDCAMIO_VOL,
+ SC2730_LDO_VDDCAMIO_VOL_MASK, 10000, 1200000,
+ 1830000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDWCN, SC2730_LDO_VDDWCN_PD,
+ SC2730_LDO_VDDWCN_PD_MASK, SC2730_LDO_VDDWCN_VOL,
+ SC2730_LDO_VDDWCN_VOL_MASK, 15000, 900000, 1845000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMD1, SC2730_LDO_VDDCAMD1_PD,
+ SC2730_LDO_VDDCAMD1_PD_MASK, SC2730_LDO_VDDCAMD1_VOL,
+ SC2730_LDO_VDDCAMD1_VOL_MASK, 15000, 900000,
+ 1365000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMD0, SC2730_LDO_VDDCAMD0_PD,
+ SC2730_LDO_VDDCAMD0_PD_MASK, SC2730_LDO_VDDCAMD0_VOL,
+ SC2730_LDO_VDDCAMD0_VOL_MASK, 15000, 900000,
+ 1365000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDRF1V25, SC2730_LDO_VDDRF1V25_PD,
+ SC2730_LDO_VDDRF1V25_PD_MASK,
+ SC2730_LDO_VDDRF1V25_VOL,
+ SC2730_LDO_VDDRF1V25_VOL_MASK, 15000, 900000,
+ 1365000, 0),
+ SC2730_REGU_LINEAR(LDO_AVDD12, SC2730_LDO_AVDD12_PD,
+ SC2730_LDO_AVDD12_PD_MASK, SC2730_LDO_AVDD12_VOL,
+ SC2730_LDO_AVDD12_VOL_MASK, 15000, 900000, 1365000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMA0, SC2730_LDO_VDDCAMA0_PD,
+ SC2730_LDO_VDDCAMA0_PD_MASK, SC2730_LDO_VDDCAMA0_VOL,
+ SC2730_LDO_VDDCAMA0_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMA1, SC2730_LDO_VDDCAMA1_PD,
+ SC2730_LDO_VDDCAMA1_PD_MASK, SC2730_LDO_VDDCAMA1_VOL,
+ SC2730_LDO_VDDCAMA1_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDCAMMOT, SC2730_LDO_VDDCAMMOT_PD,
+ SC2730_LDO_VDDCAMMOT_PD_MASK,
+ SC2730_LDO_VDDCAMMOT_VOL,
+ SC2730_LDO_VDDCAMMOT_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDSIM2, SC2730_LDO_VDDSIM2_PD,
+ SC2730_LDO_VDDSIM2_PD_MASK, SC2730_LDO_VDDSIM2_VOL,
+ SC2730_LDO_VDDSIM2_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDEMMCCORE, SC2730_LDO_VDDEMMCCORE_PD,
+ SC2730_LDO_VDDEMMCCORE_PD_MASK,
+ SC2730_LDO_VDDEMMCCORE_VOL,
+ SC2730_LDO_VDDEMMCCORE_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDSDCORE, SC2730_LDO_VDDSDCORE_PD,
+ SC2730_LDO_VDDSDCORE_PD_MASK,
+ SC2730_LDO_VDDSDCORE_VOL,
+ SC2730_LDO_VDDSDCORE_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDSDIO, SC2730_LDO_VDDSDIO_PD,
+ SC2730_LDO_VDDSDIO_PD_MASK, SC2730_LDO_VDDSDIO_VOL,
+ SC2730_LDO_VDDSDIO_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDD28, SC2730_POWER_PD_SW,
+ SC2730_LDO_VDD28_PD_MASK, SC2730_LDO_VDD28_VOL,
+ SC2730_LDO_VDD28_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDWIFIPA, SC2730_LDO_VDDWIFIPA_PD,
+ SC2730_LDO_VDDWIFIPA_PD_MASK,
+ SC2730_LDO_VDDWIFIPA_VOL,
+ SC2730_LDO_VDDWIFIPA_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDD18_DCXO, SC2730_POWER_PD_SW,
+ SC2730_LDO_VDD18_DCXO_PD_MASK,
+ SC2730_LDO_VDD18_DCXO_VOL,
+ SC2730_LDO_VDD18_DCXO_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDUSB33, SC2730_LDO_VDDUSB33_PD,
+ SC2730_LDO_VDDUSB33_PD_MASK, SC2730_LDO_VDDUSB33_VOL,
+ SC2730_LDO_VDDUSB33_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+ SC2730_REGU_LINEAR(LDO_VDDLDO0, SC2730_LDO_VDDLDO0_PD,
+ SC2730_LDO_VDDLDO0_PD_MASK, SC2730_LDO_VDDLDO0_VOL,
+ SC2730_LDO_VDDLDO0_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDLDO1, SC2730_LDO_VDDLDO1_PD,
+ SC2730_LDO_VDDLDO1_PD_MASK, SC2730_LDO_VDDLDO1_VOL,
+ SC2730_LDO_VDDLDO1_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDLDO2, SC2730_LDO_VDDLDO2_PD,
+ SC2730_LDO_VDDLDO2_PD_MASK, SC2730_LDO_VDDLDO2_VOL,
+ SC2730_LDO_VDDLDO2_VOL_MASK, 10000, 1200000, 3750000,
+ 0),
+ SC2730_REGU_LINEAR(LDO_VDDKPLED, SC2730_LDO_VDDKPLED_PD,
+ SC2730_LDO_VDDKPLED_PD_MASK, SC2730_LDO_VDDKPLED_VOL,
+ SC2730_LDO_VDDKPLED_VOL_MASK, 10000, 1200000,
+ 3750000, 0),
+};
+
+static int sc2730_regulator_unlock(struct regmap *regmap)
+{
+ return regmap_write(regmap, SC2730_PWR_WR_PROT,
+ SC2730_WR_UNLOCK_VALUE);
+}
+
+static int sc2730_regulator_probe(struct platform_device *pdev)
+{
+ int i, ret;
+ struct regmap *regmap;
+ struct regulator_config config = { };
+ struct regulator_dev *rdev;
+
+ regmap = dev_get_regmap(pdev->dev.parent, NULL);
+ if (!regmap) {
+ dev_err(&pdev->dev, "failed to get regmap.\n");
+ return -ENODEV;
+ }
+
+ ret = sc2730_regulator_unlock(regmap);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to release regulator lock\n");
+ return ret;
+ }
+
+ config.dev = &pdev->dev;
+ config.regmap = regmap;
+
+ for (i = 0; i < ARRAY_SIZE(regulators); i++) {
+ rdev = devm_regulator_register(&pdev->dev, ®ulators[i],
+ &config);
+ if (IS_ERR(rdev)) {
+ dev_err(&pdev->dev, "failed to register regulator %s\n",
+ regulators[i].name);
+ return PTR_ERR(rdev);
+ }
+ }
+
+ return 0;
+}
+
+static const struct of_device_id sc2730_regulator_of_match[] = {
+ { .compatible = "sprd,sc2730-regulator" },
+ { }
+};
+MODULE_DEVICE_TABLE(of, sc2730_regulator_of_match);
+
+static struct platform_driver sc2730_regulator_driver = {
+ .driver = {
+ .name = "sc2730-regulator",
+ .of_match_table = sc2730_regulator_of_match,
+ },
+ .probe = sc2730_regulator_probe,
+};
+
+module_platform_driver(sc2730_regulator_driver);
+
+MODULE_AUTHOR("Chen Junhui <erick.chen@spreadtrum.com>");
+MODULE_DESCRIPTION("Spreadtrum SC2730 regulator driver");
+MODULE_LICENSE("GPL");
--
2.51.0
^ permalink raw reply related [flat|nested] 9+ messages in thread