Merge tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-nextgrafted

Pull networking updates from Jakub Kicinski:
 "Core:

   - Add dedicated kmem_cache for typical/small skb->head, avoid having
     to access struct page at kfree time, and improve memory use.

   - Introduce sysctl to set default RPS configuration for new netdevs.

   - Define Netlink protocol specification format which can be used to
     describe messages used by each family and auto-generate parsers.
     Add tools for generating kernel data structures and uAPI headers.

   - Expose all net/core sysctls inside netns.

   - Remove 4s sleep in netpoll if carrier is instantly detected on
     boot.

   - Add configurable limit of MDB entries per port, and port-vlan.

   - Continue populating drop reasons throughout the stack.

   - Retire a handful of legacy Qdiscs and classifiers.

  Protocols:

   - Support IPv4 big TCP (TSO frames larger than 64kB).

   - Add IP_LOCAL_PORT_RANGE socket option, to control local port range
     on socket by socket basis.

   - Track and report in procfs number of MPTCP sockets used.

   - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path
     manager.

   - IPv6: don't check net.ipv6.route.max_size and rely on garbage
     collection to free memory (similarly to IPv4).

   - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986).

   - ICMP: add per-rate limit counters.

   - Add support for user scanning requests in ieee802154.

   - Remove static WEP support.

   - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate
     reporting.

   - WiFi 7 EHT channel puncturing support (client & AP).

  BPF:

   - Add a rbtree data structure following the "next-gen data structure"
     precedent set by recently added linked list, that is, by using
     kfunc + kptr instead of adding a new BPF map type.

   - Expose XDP hints via kfuncs with initial support for RX hash and
     timestamp metadata.

   - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to
     better support decap on GRE tunnel devices not operating in collect
     metadata.

   - Improve x86 JIT's codegen for PROBE_MEM runtime error checks.

   - Remove the need for trace_printk_lock for bpf_trace_printk and
     bpf_trace_vprintk helpers.

   - Extend libbpf's bpf_tracing.h support for tracing arguments of
     kprobes/uprobes and syscall as a special case.

   - Significantly reduce the search time for module symbols by
     livepatch and BPF.

   - Enable cpumasks to be used as kptrs, which is useful for tracing
     programs tracking which tasks end up running on which CPUs in
     different time intervals.

   - Add support for BPF trampoline on s390x and riscv64.

   - Add capability to export the XDP features supported by the NIC.

   - Add __bpf_kfunc tag for marking kernel functions as kfuncs.

   - Add cgroup.memory=nobpf kernel parameter option to disable BPF
     memory accounting for container environments.

  Netfilter:

   - Remove the CLUSTERIP target. It has been marked as obsolete for
     years, and we still have WARN splats wrt races of the out-of-band
     /proc interface installed by this target.

   - Add 'destroy' commands to nf_tables. They are identical to the
     existing 'delete' commands, but do not return an error if the
     referenced object (set, chain, rule...) did not exist.

  Driver API:

   - Improve cpumask_local_spread() locality to help NICs set the right
     IRQ affinity on AMD platforms.

   - Separate C22 and C45 MDIO bus transactions more clearly.

   - Introduce new DCB table to control DSCP rewrite on egress.

   - Support configuration of Physical Layer Collision Avoidance (PLCA)
     Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of
     shared medium Ethernet.

   - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing
     preemption of low priority frames by high priority frames.

   - Add support for controlling MACSec offload using netlink SET.

   - Rework devlink instance refcounts to allow registration and
     de-registration under the instance lock. Split the code into
     multiple files, drop some of the unnecessarily granular locks and
     factor out common parts of netlink operation handling.

   - Add TX frame aggregation parameters (for USB drivers).

   - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning
     messages with notifications for debug.

   - Allow offloading of UDP NEW connections via act_ct.

   - Add support for per action HW stats in TC.

   - Support hardware miss to TC action (continue processing in SW from
     a specific point in the action chain).

   - Warn if old Wireless Extension user space interface is used with
     modern cfg80211/mac80211 drivers. Do not support Wireless
     Extensions for Wi-Fi 7 devices at all. Everyone should switch to
     using nl80211 interface instead.

   - Improve the CAN bit timing configuration. Use extack to return
     error messages directly to user space, update the SJW handling,
     including the definition of a new default value that will benefit
     CAN-FD controllers, by increasing their oscillator tolerance.

  New hardware / drivers:

   - Ethernet:
      - nVidia BlueField-3 support (control traffic driver)
      - Ethernet support for imx93 SoCs
      - Motorcomm yt8531 gigabit Ethernet PHY
      - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA)
      - Microchip LAN8841 PHY (incl. cable diagnostics and PTP)
      - Amlogic gxl MDIO mux

   - WiFi:
      - RealTek RTL8188EU (rtl8xxxu)
      - Qualcomm Wi-Fi 7 devices (ath12k)

   - CAN:
      - Renesas R-Car V4H

  Drivers:

   - Bluetooth:
      - Set Per Platform Antenna Gain (PPAG) for Intel controllers.

   - Ethernet NICs:
      - Intel (1G, igc):
         - support TSN / Qbv / packet scheduling features of i226 model
      - Intel (100G, ice):
         - use GNSS subsystem instead of TTY
         - multi-buffer XDP support
         - extend support for GPIO pins to E823 devices
      - nVidia/Mellanox:
         - update the shared buffer configuration on PFC commands
         - implement PTP adjphase function for HW offset control
         - TC support for Geneve and GRE with VF tunnel offload
         - more efficient crypto key management method
         - multi-port eswitch support
      - Netronome/Corigine:
         - add DCB IEEE support
         - support IPsec offloading for NFP3800
      - Freescale/NXP (enetc):
         - support XDP_REDIRECT for XDP non-linear buffers
         - improve reconfig, avoid link flap and waiting for idle
         - support MAC Merge layer
      - Other NICs:
         - sfc/ef100: add basic devlink support for ef100
         - ionic: rx_push mode operation (writing descriptors via MMIO)
         - bnxt: use the auxiliary bus abstraction for RDMA
         - r8169: disable ASPM and reset bus in case of tx timeout
         - cpsw: support QSGMII mode for J721e CPSW9G
         - cpts: support pulse-per-second output
         - ngbe: add an mdio bus driver
         - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing
         - r8152: handle devices with FW with NCM support
         - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation
         - virtio-net: support multi buffer XDP
         - virtio/vsock: replace virtio_vsock_pkt with sk_buff
         - tsnep: XDP support

   - Ethernet high-speed switches:
      - nVidia/Mellanox (mlxsw):
         - add support for latency TLV (in FW control messages)
      - Microchip (sparx5):
         - separate explicit and implicit traffic forwarding rules, make
           the implicit rules always active
         - add support for egress DSCP rewrite
         - IS0 VCAP support (Ingress Classification)
         - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS
           etc.)
         - ES2 VCAP support (Egress Access Control)
         - support for Per-Stream Filtering and Policing (802.1Q,
           8.6.5.1)

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - add MAB (port auth) offload support
         - enable PTP receive for mv88e6390
      - NXP (ocelot):
         - support MAC Merge layer
         - support for the the vsc7512 internal copper phys
      - Microchip:
         - lan9303: convert to PHYLINK
         - lan966x: support TC flower filter statistics
         - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x
         - lan937x: support Credit Based Shaper configuration
         - ksz9477: support Energy Efficient Ethernet
      - other:
         - qca8k: convert to regmap read/write API, use bulk operations
         - rswitch: Improve TX timestamp accuracy

   - Intel WiFi (iwlwifi):
      - EHT (Wi-Fi 7) rate reporting
      - STEP equalizer support: transfer some STEP (connection to radio
        on platforms with integrated wifi) related parameters from the
        BIOS to the firmware.

   - Qualcomm 802.11ax WiFi (ath11k):
      - IPQ5018 support
      - Fine Timing Measurement (FTM) responder role support
      - channel 177 support

   - MediaTek WiFi (mt76):
      - per-PHY LED support
      - mt7996: EHT (Wi-Fi 7) support
      - Wireless Ethernet Dispatch (WED) reset support
      - switch to using page pool allocator

   - RealTek WiFi (rtw89):
      - support new version of Bluetooth co-existance

   - Mobile:
      - rmnet: support TX aggregation"

* tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits)
  page_pool: add a comment explaining the fragment counter usage
  net: ethtool: fix __ethtool_dev_mm_supported() implementation
  ethtool: pse-pd: Fix double word in comments
  xsk: add linux/vmalloc.h to xsk.c
  sefltests: netdevsim: wait for devlink instance after netns removal
  selftest: fib_tests: Always cleanup before exit
  net/mlx5e: Align IPsec ASO result memory to be as required by hardware
  net/mlx5e: TC, Set CT miss to the specific ct action instance
  net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG
  net/mlx5: Refactor tc miss handling to a single function
  net/mlx5: Kconfig: Make tc offload depend on tc skb extension
  net/sched: flower: Support hardware miss to tc action
  net/sched: flower: Move filter handle initialization earlier
  net/sched: cls_api: Support hardware miss to tc action
  net/sched: Rename user cookie and act cookie
  sfc: fix builds without CONFIG_RTC_LIB
  sfc: clean up some inconsistent indentings
  net/mlx4_en: Introduce flexible array to silence overflow warning
  net: lan966x: Fix possible deadlock inside PTP
  net/ulp: Remove redundant ->clone() test in inet_clone_ulp().
  ...

1 files changed, 422 insertions, 0 deletions

diff --git a/drivers/regulator/mt6332-regulator.c b/drivers/regulator/mt6332-regulator.c
new file mode 100644
index 000000000..77a27d812
--- /dev/null
+++ b/drivers/regulator/mt6332-regulator.c
@@ -0,0 +1,422 @@
+// SPDX-License-Identifier: GPL-2.0
+//
+// Copyright (c) 2022 Collabora Ltd.
+// Author: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
+//
+// Based on mt6323-regulator.c,
+//     Copyright (c) 2016 MediaTek Inc.
+//
+
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+#include <linux/mfd/mt6397/core.h>
+#include <linux/mfd/mt6332/registers.h>
+#include <linux/regulator/driver.h>
+#include <linux/regulator/machine.h>
+#include <linux/regulator/mt6332-regulator.h>
+#include <linux/regulator/of_regulator.h>
+
+#define MT6332_LDO_MODE_NORMAL	0
+#define MT6332_LDO_MODE_LP	1
+
+/*
+ * MT6332 regulators information
+ *
+ * @desc: standard fields of regulator description.
+ * @qi: Mask for query enable signal status of regulators
+ * @vselon_reg: Register sections for hardware control mode of bucks
+ * @vselctrl_reg: Register for controlling the buck control mode.
+ * @vselctrl_mask: Mask for query buck's voltage control mode.
+ * @status_reg: Register for regulator enable status where qi unavailable
+ * @status_mask: Mask for querying regulator enable status
+ */
+struct mt6332_regulator_info {
+	struct regulator_desc desc;
+	u32 qi;
+	u32 vselon_reg;
+	u32 vselctrl_reg;
+	u32 vselctrl_mask;
+	u32 modeset_reg;
+	u32 modeset_mask;
+	u32 status_reg;
+	u32 status_mask;
+};
+
+#define MT6332_BUCK(match, vreg, min, max, step, volt_ranges, enreg,	\
+		vosel, vosel_mask, voselon, vosel_ctrl)			\
+[MT6332_ID_##vreg] = {							\
+	.desc = {							\
+		.name = #vreg,						\
+		.of_match = of_match_ptr(match),			\
+		.ops = &mt6332_buck_volt_range_ops,			\
+		.type = REGULATOR_VOLTAGE,				\
+		.id = MT6332_ID_##vreg,					\
+		.owner = THIS_MODULE,					\
+		.n_voltages = (max - min)/step + 1,			\
+		.linear_ranges = volt_ranges,				\
+		.n_linear_ranges = ARRAY_SIZE(volt_ranges),		\
+		.vsel_reg = vosel,					\
+		.vsel_mask = vosel_mask,				\
+		.enable_reg = enreg,					\
+		.enable_mask = BIT(0),					\
+	},								\
+	.qi = BIT(13),							\
+	.vselon_reg = voselon,						\
+	.vselctrl_reg = vosel_ctrl,					\
+	.vselctrl_mask = BIT(1),					\
+	.status_mask = 0,						\
+}
+
+#define MT6332_LDO_LINEAR(match, vreg, min, max, step, volt_ranges,	\
+			  enreg, vosel, vosel_mask, voselon,		\
+			  vosel_ctrl, _modeset_reg, _modeset_mask)	\
+[MT6332_ID_##vreg] = {							\
+	.desc = {							\
+		.name = #vreg,						\
+		.of_match = of_match_ptr(match),			\
+		.ops = &mt6332_ldo_volt_range_ops,			\
+		.type = REGULATOR_VOLTAGE,				\
+		.id = MT6332_ID_##vreg,					\
+		.owner = THIS_MODULE,					\
+		.n_voltages = (max - min)/step + 1,			\
+		.linear_ranges = volt_ranges,				\
+		.n_linear_ranges = ARRAY_SIZE(volt_ranges),		\
+		.vsel_reg = vosel,					\
+		.vsel_mask = vosel_mask,				\
+		.enable_reg = enreg,					\
+		.enable_mask = BIT(0),					\
+	},								\
+	.qi = BIT(15),							\
+	.vselon_reg = voselon,						\
+	.vselctrl_reg = vosel_ctrl,					\
+	.vselctrl_mask = BIT(1),					\
+	.modeset_reg = _modeset_reg,					\
+	.modeset_mask = _modeset_mask,					\
+	.status_mask = 0,						\
+}
+
+#define MT6332_LDO_AO(match, vreg, ldo_volt_table, vosel, vosel_mask)	\
+[MT6332_ID_##vreg] = {							\
+	.desc = {							\
+		.name = #vreg,						\
+		.of_match = of_match_ptr(match),			\
+		.ops = &mt6332_volt_table_ao_ops,			\
+		.type = REGULATOR_VOLTAGE,				\
+		.id = MT6332_ID_##vreg,					\
+		.owner = THIS_MODULE,					\
+		.n_voltages = ARRAY_SIZE(ldo_volt_table),		\
+		.volt_table = ldo_volt_table,				\
+		.vsel_reg = vosel,					\
+		.vsel_mask = vosel_mask,				\
+	},								\
+}
+
+#define MT6332_LDO(match, vreg, ldo_volt_table, enreg, enbit, vosel,	\
+		   vosel_mask, _modeset_reg, _modeset_mask)		\
+[MT6332_ID_##vreg] = {							\
+	.desc = {							\
+		.name = #vreg,						\
+		.of_match = of_match_ptr(match),			\
+		.ops = &mt6332_volt_table_ops,				\
+		.type = REGULATOR_VOLTAGE,				\
+		.id = MT6332_ID_##vreg,					\
+		.owner = THIS_MODULE,					\
+		.n_voltages = ARRAY_SIZE(ldo_volt_table),		\
+		.volt_table = ldo_volt_table,				\
+		.vsel_reg = vosel,					\
+		.vsel_mask = vosel_mask,				\
+		.enable_reg = enreg,					\
+		.enable_mask = BIT(enbit),				\
+	},								\
+	.qi = BIT(15),							\
+	.modeset_reg = _modeset_reg,					\
+	.modeset_mask = _modeset_mask,					\
+	.status_mask = 0,						\
+}
+
+#define MT6332_REG_FIXED(match, vreg, enreg, enbit, qibit, volt, stbit)	\
+[MT6332_ID_##vreg] = {							\
+	.desc = {							\
+		.name = #vreg,						\
+		.of_match = of_match_ptr(match),			\
+		.ops = &mt6332_volt_fixed_ops,				\
+		.type = REGULATOR_VOLTAGE,				\
+		.id = MT6332_ID_##vreg,					\
+		.owner = THIS_MODULE,					\
+		.n_voltages = 1,					\
+		.enable_reg = enreg,					\
+		.enable_mask = BIT(enbit),				\
+		.min_uV = volt,						\
+	},								\
+	.qi = BIT(qibit),						\
+	.status_reg = MT6332_EN_STATUS0,				\
+	.status_mask = BIT(stbit),					\
+}
+
+static const struct linear_range boost_volt_range[] = {
+	REGULATOR_LINEAR_RANGE(3500000, 0, 0x7f, 31250),
+};
+
+static const struct linear_range buck_volt_range[] = {
+	REGULATOR_LINEAR_RANGE(700000, 0, 0x7f, 6250),
+};
+
+static const struct linear_range buck_pa_volt_range[] = {
+	REGULATOR_LINEAR_RANGE(500000, 0, 0x3f, 50000),
+};
+
+static const struct linear_range buck_rf_volt_range[] = {
+	REGULATOR_LINEAR_RANGE(1050000, 0, 0x7f, 9375),
+};
+
+static const unsigned int ldo_volt_table1[] = {
+	2800000, 3000000, 0, 3200000
+};
+
+static const unsigned int ldo_volt_table2[] = {
+	1200000, 1300000, 1400000, 1500000, 1600000, 1700000, 1800000, 1800000,
+};
+
+static int mt6332_get_status(struct regulator_dev *rdev)
+{
+	struct mt6332_regulator_info *info = rdev_get_drvdata(rdev);
+	u32 reg, en_mask, regval;
+	int ret;
+
+	if (info->qi > 0) {
+		reg = info->desc.enable_reg;
+		en_mask = info->qi;
+	} else {
+		reg = info->status_reg;
+		en_mask = info->status_mask;
+	}
+
+	ret = regmap_read(rdev->regmap, reg, &regval);
+	if (ret != 0) {
+		dev_err(&rdev->dev, "Failed to get enable reg: %d\n", ret);
+		return ret;
+	}
+
+	return (regval & en_mask) ? REGULATOR_STATUS_ON : REGULATOR_STATUS_OFF;
+}
+
+static int mt6332_ldo_set_mode(struct regulator_dev *rdev, unsigned int mode)
+{
+	struct mt6332_regulator_info *info = rdev_get_drvdata(rdev);
+	int val;
+
+	switch (mode) {
+	case REGULATOR_MODE_STANDBY:
+		val = MT6332_LDO_MODE_LP;
+		break;
+	case REGULATOR_MODE_NORMAL:
+		val = MT6332_LDO_MODE_NORMAL;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	val <<= ffs(info->modeset_mask) - 1;
+
+	return regmap_update_bits(rdev->regmap, info->modeset_reg,
+				  info->modeset_mask, val);
+}
+
+static unsigned int mt6332_ldo_get_mode(struct regulator_dev *rdev)
+{
+	struct mt6332_regulator_info *info = rdev_get_drvdata(rdev);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(rdev->regmap, info->modeset_reg, &val);
+	if (ret < 0)
+		return ret;
+
+	val &= info->modeset_mask;
+	val >>= ffs(info->modeset_mask) - 1;
+
+	return (val & BIT(0)) ? REGULATOR_MODE_STANDBY : REGULATOR_MODE_NORMAL;
+}
+
+static const struct regulator_ops mt6332_buck_volt_range_ops = {
+	.list_voltage = regulator_list_voltage_linear_range,
+	.map_voltage = regulator_map_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_time_sel = regulator_set_voltage_time_sel,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_status = mt6332_get_status,
+};
+
+static const struct regulator_ops mt6332_ldo_volt_range_ops = {
+	.list_voltage = regulator_list_voltage_linear_range,
+	.map_voltage = regulator_map_voltage_linear_range,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_time_sel = regulator_set_voltage_time_sel,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_status = mt6332_get_status,
+	.set_mode = mt6332_ldo_set_mode,
+	.get_mode = mt6332_ldo_get_mode,
+};
+
+static const struct regulator_ops mt6332_volt_table_ops = {
+	.list_voltage = regulator_list_voltage_table,
+	.map_voltage = regulator_map_voltage_iterate,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_time_sel = regulator_set_voltage_time_sel,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_status = mt6332_get_status,
+	.set_mode = mt6332_ldo_set_mode,
+	.get_mode = mt6332_ldo_get_mode,
+};
+
+static const struct regulator_ops mt6332_volt_table_ao_ops = {
+	.list_voltage = regulator_list_voltage_table,
+	.map_voltage = regulator_map_voltage_iterate,
+	.set_voltage_sel = regulator_set_voltage_sel_regmap,
+	.get_voltage_sel = regulator_get_voltage_sel_regmap,
+	.set_voltage_time_sel = regulator_set_voltage_time_sel,
+};
+
+static const struct regulator_ops mt6332_volt_fixed_ops = {
+	.list_voltage = regulator_list_voltage_linear,
+	.enable = regulator_enable_regmap,
+	.disable = regulator_disable_regmap,
+	.is_enabled = regulator_is_enabled_regmap,
+	.get_status = mt6332_get_status,
+};
+
+/* The array is indexed by id(MT6332_ID_XXX) */
+static struct mt6332_regulator_info mt6332_regulators[] = {
+	MT6332_BUCK("buck-vdram", VDRAM, 700000, 1493750, 6250, buck_volt_range,
+		    MT6332_EN_STATUS0, MT6332_VDRAM_CON11, GENMASK(6, 0),
+		    MT6332_VDRAM_CON12, MT6332_VDRAM_CON7),
+	MT6332_BUCK("buck-vdvfs2", VDVFS2, 700000, 1312500, 6250, buck_volt_range,
+		    MT6332_VDVFS2_CON9, MT6332_VDVFS2_CON11, GENMASK(6, 0),
+		    MT6332_VDVFS2_CON12, MT6332_VDVFS2_CON7),
+	MT6332_BUCK("buck-vpa", VPA, 500000, 3400000, 50000, buck_pa_volt_range,
+		    MT6332_VPA_CON9, MT6332_VPA_CON11, GENMASK(5, 0),
+		    MT6332_VPA_CON12, MT6332_VPA_CON7),
+	MT6332_BUCK("buck-vrf18a", VRF1, 1050000, 2240625, 9375, buck_rf_volt_range,
+		    MT6332_VRF1_CON9, MT6332_VRF1_CON11, GENMASK(6, 0),
+		    MT6332_VRF1_CON12, MT6332_VRF1_CON7),
+	MT6332_BUCK("buck-vrf18b", VRF2, 1050000, 2240625, 9375, buck_rf_volt_range,
+		    MT6332_VRF2_CON9, MT6332_VRF2_CON11, GENMASK(6, 0),
+		    MT6332_VRF2_CON12, MT6332_VRF2_CON7),
+	MT6332_BUCK("buck-vsbst", VSBST, 3500000, 7468750, 31250, boost_volt_range,
+		    MT6332_VSBST_CON8, MT6332_VSBST_CON12, GENMASK(6, 0),
+		    MT6332_VSBST_CON13, MT6332_VSBST_CON8),
+	MT6332_LDO("ldo-vauxb32", VAUXB32, ldo_volt_table1, MT6332_LDO_CON1, 10,
+		   MT6332_LDO_CON9, GENMASK(6, 5), MT6332_LDO_CON1, GENMASK(1, 0)),
+	MT6332_REG_FIXED("ldo-vbif28", VBIF28, MT6332_LDO_CON2, 10, 0, 2800000, 1),
+	MT6332_REG_FIXED("ldo-vusb33", VUSB33, MT6332_LDO_CON3, 10, 0, 3300000, 2),
+	MT6332_LDO_LINEAR("ldo-vsram", VSRAM_DVFS2, 700000, 1493750, 6250, buck_volt_range,
+			  MT6332_EN_STATUS0, MT6332_LDO_CON8, GENMASK(15, 9),
+			  MT6332_VDVFS2_CON23, MT6332_VDVFS2_CON22,
+			  MT6332_LDO_CON5, GENMASK(1, 0)),
+	MT6332_LDO_AO("ldo-vdig18", VDIG18, ldo_volt_table2, MT6332_LDO_CON12, GENMASK(11, 9)),
+};
+
+static int mt6332_set_buck_vosel_reg(struct platform_device *pdev)
+{
+	struct mt6397_chip *mt6332 = dev_get_drvdata(pdev->dev.parent);
+	int i;
+	u32 regval;
+
+	for (i = 0; i < MT6332_ID_VREG_MAX; i++) {
+		if (mt6332_regulators[i].vselctrl_reg) {
+			if (regmap_read(mt6332->regmap,
+				mt6332_regulators[i].vselctrl_reg,
+				&regval) < 0) {
+				dev_err(&pdev->dev,
+					"Failed to read buck ctrl\n");
+				return -EIO;
+			}
+
+			if (regval & mt6332_regulators[i].vselctrl_mask) {
+				mt6332_regulators[i].desc.vsel_reg =
+				mt6332_regulators[i].vselon_reg;
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int mt6332_regulator_probe(struct platform_device *pdev)
+{
+	struct mt6397_chip *mt6332 = dev_get_drvdata(pdev->dev.parent);
+	struct regulator_config config = {};
+	struct regulator_dev *rdev;
+	int i;
+	u32 reg_value;
+
+	/* Query buck controller to select activated voltage register part */
+	if (mt6332_set_buck_vosel_reg(pdev))
+		return -EIO;
+
+	/* Read PMIC chip revision to update constraints and voltage table */
+	if (regmap_read(mt6332->regmap, MT6332_HWCID, &reg_value) < 0) {
+		dev_err(&pdev->dev, "Failed to read Chip ID\n");
+		return -EIO;
+	}
+	reg_value &= GENMASK(7, 0);
+
+	dev_info(&pdev->dev, "Chip ID = 0x%x\n", reg_value);
+
+	/*
+	 * ChipID 0x10 is "MT6332 E1", has a different voltage table and
+	 * it's currently not supported in this driver. Upon detection of
+	 * this ID, refuse to register the regulators, as we will wrongly
+	 * interpret the VSEL for this revision, potentially overvolting
+	 * some device.
+	 */
+	if (reg_value == 0x10) {
+		dev_err(&pdev->dev, "Chip version not supported. Bailing out.\n");
+		return -EINVAL;
+	}
+
+	for (i = 0; i < MT6332_ID_VREG_MAX; i++) {
+		config.dev = &pdev->dev;
+		config.driver_data = &mt6332_regulators[i];
+		config.regmap = mt6332->regmap;
+		rdev = devm_regulator_register(&pdev->dev,
+				&mt6332_regulators[i].desc, &config);
+		if (IS_ERR(rdev)) {
+			dev_err(&pdev->dev, "failed to register %s\n",
+				mt6332_regulators[i].desc.name);
+			return PTR_ERR(rdev);
+		}
+	}
+	return 0;
+}
+
+static const struct platform_device_id mt6332_platform_ids[] = {
+	{"mt6332-regulator", 0},
+	{ /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(platform, mt6332_platform_ids);
+
+static struct platform_driver mt6332_regulator_driver = {
+	.driver = {
+		.name = "mt6332-regulator",
+	},
+	.probe = mt6332_regulator_probe,
+	.id_table = mt6332_platform_ids,
+};
+
+module_platform_driver(mt6332_regulator_driver);
+
+MODULE_AUTHOR("AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>");
+MODULE_DESCRIPTION("Regulator Driver for MediaTek MT6332 PMIC");
+MODULE_LICENSE("GPL");