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, 994 insertions, 0 deletions

diff --git a/drivers/iio/frequency/adf4377.c b/drivers/iio/frequency/adf4377.c
new file mode 100644
index 000000000..26abecbd5
--- /dev/null
+++ b/drivers/iio/frequency/adf4377.c
@@ -0,0 +1,994 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADF4377 driver
+ *
+ * Copyright 2022 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <linux/iio/iio.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+/* ADF4377 REG0000 Map */
+#define ADF4377_0000_SOFT_RESET_R_MSK		BIT(7)
+#define ADF4377_0000_LSB_FIRST_R_MSK		BIT(6)
+#define ADF4377_0000_ADDRESS_ASC_R_MSK		BIT(5)
+#define ADF4377_0000_SDO_ACTIVE_R_MSK		BIT(4)
+#define ADF4377_0000_SDO_ACTIVE_MSK		BIT(3)
+#define ADF4377_0000_ADDRESS_ASC_MSK		BIT(2)
+#define ADF4377_0000_LSB_FIRST_MSK		BIT(1)
+#define ADF4377_0000_SOFT_RESET_MSK		BIT(0)
+
+/* ADF4377 REG0000 Bit Definition */
+#define ADF4377_0000_SDO_ACTIVE_SPI_3W		0x0
+#define ADF4377_0000_SDO_ACTIVE_SPI_4W		0x1
+
+#define ADF4377_0000_ADDR_ASC_AUTO_DECR		0x0
+#define ADF4377_0000_ADDR_ASC_AUTO_INCR		0x1
+
+#define ADF4377_0000_LSB_FIRST_MSB		0x0
+#define ADF4377_0000_LSB_FIRST_LSB		0x1
+
+#define ADF4377_0000_SOFT_RESET_N_OP		0x0
+#define ADF4377_0000_SOFT_RESET_EN		0x1
+
+/* ADF4377 REG0001 Map */
+#define ADF4377_0001_SINGLE_INSTR_MSK		BIT(7)
+#define ADF4377_0001_MASTER_RB_CTRL_MSK		BIT(5)
+
+/* ADF4377 REG0003 Bit Definition */
+#define ADF4377_0003_CHIP_TYPE			0x06
+
+/* ADF4377 REG0004 Bit Definition */
+#define ADF4377_0004_PRODUCT_ID_LSB		0x0005
+
+/* ADF4377 REG0005 Bit Definition */
+#define ADF4377_0005_PRODUCT_ID_MSB		0x0005
+
+/* ADF4377 REG000A Map */
+#define ADF4377_000A_SCRATCHPAD_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG000C Bit Definition */
+#define ADF4377_000C_VENDOR_ID_LSB		0x56
+
+/* ADF4377 REG000D Bit Definition */
+#define ADF4377_000D_VENDOR_ID_MSB		0x04
+
+/* ADF4377 REG000F Bit Definition */
+#define ADF4377_000F_R00F_RSV1_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0010 Map*/
+#define ADF4377_0010_N_INT_LSB_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0011 Map*/
+#define ADF4377_0011_EN_AUTOCAL_MSK		BIT(7)
+#define ADF4377_0011_EN_RDBLR_MSK		BIT(6)
+#define ADF4377_0011_DCLK_DIV2_MSK		GENMASK(5, 4)
+#define ADF4377_0011_N_INT_MSB_MSK		GENMASK(3, 0)
+
+/* ADF4377 REG0011 Bit Definition */
+#define ADF4377_0011_DCLK_DIV2_1		0x0
+#define ADF4377_0011_DCLK_DIV2_2		0x1
+#define ADF4377_0011_DCLK_DIV2_4		0x2
+#define ADF4377_0011_DCLK_DIV2_8		0x3
+
+/* ADF4377 REG0012 Map*/
+#define ADF4377_0012_CLKOUT_DIV_MSK		GENMASK(7, 6)
+#define ADF4377_0012_R_DIV_MSK			GENMASK(5, 0)
+
+/* ADF4377 REG0012 Bit Definition */
+#define ADF4377_0012_CLKOUT_DIV_1		0x0
+#define ADF4377_0012_CLKOUT_DIV_2		0x1
+#define ADF4377_0012_CLKOUT_DIV_4		0x2
+#define ADF4377_0012_CLKOUT_DIV_8		0x3
+
+/* ADF4377 REG0013 Map */
+#define ADF4377_0013_M_VCO_CORE_MSK		GENMASK(5, 4)
+#define ADF4377_0013_VCO_BIAS_MSK		GENMASK(3, 0)
+
+/* ADF4377 REG0013 Bit Definition */
+#define ADF4377_0013_M_VCO_0			0x0
+#define ADF4377_0013_M_VCO_1			0x1
+#define ADF4377_0013_M_VCO_2			0x2
+#define ADF4377_0013_M_VCO_3			0x3
+
+/* ADF4377 REG0014 Map */
+#define ADF4377_0014_M_VCO_BAND_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0015 Map */
+#define ADF4377_0015_BLEED_I_LSB_MSK		GENMASK(7, 6)
+#define ADF4377_0015_BLEED_POL_MSK		BIT(5)
+#define ADF4377_0015_EN_BLEED_MSK		BIT(4)
+#define ADF4377_0015_CP_I_MSK			GENMASK(3, 0)
+
+/* ADF4377 REG0015 Bit Definition */
+#define ADF4377_CURRENT_SINK			0x0
+#define ADF4377_CURRENT_SOURCE			0x1
+
+#define ADF4377_0015_CP_0MA7			0x0
+#define ADF4377_0015_CP_0MA9			0x1
+#define ADF4377_0015_CP_1MA1			0x2
+#define ADF4377_0015_CP_1MA3			0x3
+#define ADF4377_0015_CP_1MA4			0x4
+#define ADF4377_0015_CP_1MA8			0x5
+#define ADF4377_0015_CP_2MA2			0x6
+#define ADF4377_0015_CP_2MA5			0x7
+#define ADF4377_0015_CP_2MA9			0x8
+#define ADF4377_0015_CP_3MA6			0x9
+#define ADF4377_0015_CP_4MA3			0xA
+#define ADF4377_0015_CP_5MA0			0xB
+#define ADF4377_0015_CP_5MA7			0xC
+#define ADF4377_0015_CP_7MA2			0xD
+#define ADF4377_0015_CP_8MA6			0xE
+#define ADF4377_0015_CP_10MA1			0xF
+
+/* ADF4377 REG0016 Map */
+#define ADF4377_0016_BLEED_I_MSB_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0017 Map */
+#define ADF4377_0016_INV_CLKOUT_MSK		BIT(7)
+#define ADF4377_0016_N_DEL_MSK			GENMASK(6, 0)
+
+/* ADF4377 REG0018 Map */
+#define ADF4377_0018_CMOS_OV_MSK		BIT(7)
+#define ADF4377_0018_R_DEL_MSK			GENMASK(6, 0)
+
+/* ADF4377 REG0018 Bit Definition */
+#define ADF4377_0018_1V8_LOGIC			0x0
+#define ADF4377_0018_3V3_LOGIC			0x1
+
+/* ADF4377 REG0019 Map */
+#define ADF4377_0019_CLKOUT2_OP_MSK		GENMASK(7, 6)
+#define ADF4377_0019_CLKOUT1_OP_MSK		GENMASK(5, 4)
+#define ADF4377_0019_PD_CLK_MSK			BIT(3)
+#define ADF4377_0019_PD_RDET_MSK		BIT(2)
+#define ADF4377_0019_PD_ADC_MSK			BIT(1)
+#define ADF4377_0019_PD_CALADC_MSK		BIT(0)
+
+/* ADF4377 REG0019 Bit Definition */
+#define ADF4377_0019_CLKOUT_320MV		0x0
+#define ADF4377_0019_CLKOUT_420MV		0x1
+#define ADF4377_0019_CLKOUT_530MV		0x2
+#define ADF4377_0019_CLKOUT_640MV		0x3
+
+/* ADF4377 REG001A Map */
+#define ADF4377_001A_PD_ALL_MSK			BIT(7)
+#define ADF4377_001A_PD_RDIV_MSK		BIT(6)
+#define ADF4377_001A_PD_NDIV_MSK		BIT(5)
+#define ADF4377_001A_PD_VCO_MSK			BIT(4)
+#define ADF4377_001A_PD_LD_MSK			BIT(3)
+#define ADF4377_001A_PD_PFDCP_MSK		BIT(2)
+#define ADF4377_001A_PD_CLKOUT1_MSK		BIT(1)
+#define ADF4377_001A_PD_CLKOUT2_MSK		BIT(0)
+
+/* ADF4377 REG001B Map */
+#define ADF4377_001B_EN_LOL_MSK			BIT(7)
+#define ADF4377_001B_LDWIN_PW_MSK		BIT(6)
+#define ADF4377_001B_EN_LDWIN_MSK		BIT(5)
+#define ADF4377_001B_LD_COUNT_MSK		GENMASK(4, 0)
+
+/* ADF4377 REG001B Bit Definition */
+#define ADF4377_001B_LDWIN_PW_NARROW		0x0
+#define ADF4377_001B_LDWIN_PW_WIDE		0x1
+
+/* ADF4377 REG001C Map */
+#define ADF4377_001C_EN_DNCLK_MSK		BIT(7)
+#define ADF4377_001C_EN_DRCLK_MSK		BIT(6)
+#define ADF4377_001C_RST_LD_MSK			BIT(2)
+#define ADF4377_001C_R01C_RSV1_MSK		BIT(0)
+
+/* ADF4377 REG001C Bit Definition */
+#define ADF4377_001C_RST_LD_INACTIVE		0x0
+#define ADF4377_001C_RST_LD_ACTIVE		0x1
+
+#define ADF4377_001C_R01C_RSV1			0x1
+
+/* ADF4377 REG001D Map */
+#define ADF4377_001D_MUXOUT_MSK			GENMASK(7, 4)
+#define ADF4377_001D_EN_CPTEST_MSK		BIT(2)
+#define ADF4377_001D_CP_DOWN_MSK		BIT(1)
+#define ADF4377_001D_CP_UP_MSK			BIT(0)
+
+#define ADF4377_001D_EN_CPTEST_OFF		0x0
+#define ADF4377_001D_EN_CPTEST_ON		0x1
+
+#define ADF4377_001D_CP_DOWN_OFF		0x0
+#define ADF4377_001D_CP_DOWN_ON			0x1
+
+#define ADF4377_001D_CP_UP_OFF			0x0
+#define ADF4377_001D_CP_UP_ON			0x1
+
+/* ADF4377 REG001F Map */
+#define ADF4377_001F_BST_REF_MSK		BIT(7)
+#define ADF4377_001F_FILT_REF_MSK		BIT(6)
+#define ADF4377_001F_REF_SEL_MSK		BIT(5)
+#define ADF4377_001F_R01F_RSV1_MSK		GENMASK(4, 0)
+
+/* ADF4377 REG001F Bit Definition */
+#define ADF4377_001F_BST_LARGE_REF_IN		0x0
+#define ADF4377_001F_BST_SMALL_REF_IN		0x1
+
+#define ADF4377_001F_FILT_REF_OFF		0x0
+#define ADF4377_001F_FILT_REF_ON		0x1
+
+#define ADF4377_001F_REF_SEL_DMA		0x0
+#define ADF4377_001F_REF_SEL_LNA		0x1
+
+#define ADF4377_001F_R01F_RSV1			0x7
+
+/* ADF4377 REG0020 Map */
+#define ADF4377_0020_RST_SYS_MSK		BIT(4)
+#define ADF4377_0020_EN_ADC_CLK_MSK		BIT(3)
+#define ADF4377_0020_R020_RSV1_MSK		BIT(0)
+
+/* ADF4377 REG0021 Bit Definition */
+#define ADF4377_0021_R021_RSV1			0xD3
+
+/* ADF4377 REG0022 Bit Definition */
+#define ADF4377_0022_R022_RSV1			0x32
+
+/* ADF4377 REG0023 Map */
+#define ADF4377_0023_CAT_CT_SEL			BIT(7)
+#define ADF4377_0023_R023_RSV1_MSK		GENMASK(6, 0)
+
+/* ADF4377 REG0023 Bit Definition */
+#define ADF4377_0023_R023_RSV1			0x18
+
+/* ADF4377 REG0024 Map */
+#define ADF4377_0024_DCLK_MODE_MSK		BIT(2)
+
+/* ADF4377 REG0025 Map */
+#define ADF4377_0025_CLKODIV_DB_MSK		BIT(7)
+#define ADF4377_0025_DCLK_DB_MSK		BIT(6)
+#define ADF4377_0025_R025_RSV1_MSK		GENMASK(5, 0)
+
+/* ADF4377 REG0025 Bit Definition */
+#define ADF4377_0025_R025_RSV1			0x16
+
+/* ADF4377 REG0026 Map */
+#define ADF4377_0026_VCO_BAND_DIV_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0027 Map */
+#define ADF4377_0027_SYNTH_LOCK_TO_LSB_MSK	GENMASK(7, 0)
+
+/* ADF4377 REG0028 Map */
+#define ADF4377_0028_O_VCO_DB_MSK		BIT(7)
+#define ADF4377_0028_SYNTH_LOCK_TO_MSB_MSK	GENMASK(6, 0)
+
+/* ADF4377 REG0029 Map */
+#define ADF4377_0029_VCO_ALC_TO_LSB_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG002A Map */
+#define ADF4377_002A_DEL_CTRL_DB_MSK		BIT(7)
+#define ADF4377_002A_VCO_ALC_TO_MSB_MSK		GENMASK(6, 0)
+
+/* ADF4377 REG002C Map */
+#define ADF4377_002C_R02C_RSV1			0xC0
+
+/* ADF4377 REG002D Map */
+#define ADF4377_002D_ADC_CLK_DIV_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG002E Map */
+#define ADF4377_002E_EN_ADC_CNV_MSK		BIT(7)
+#define ADF4377_002E_EN_ADC_MSK			BIT(1)
+#define ADF4377_002E_ADC_A_CONV_MSK		BIT(0)
+
+/* ADF4377 REG002E Bit Definition */
+#define ADF4377_002E_ADC_A_CONV_ADC_ST_CNV	0x0
+#define ADF4377_002E_ADC_A_CONV_VCO_CALIB	0x1
+
+/* ADF4377 REG002F Map */
+#define ADF4377_002F_DCLK_DIV1_MSK		GENMASK(1, 0)
+
+/* ADF4377 REG002F Bit Definition */
+#define ADF4377_002F_DCLK_DIV1_1		0x0
+#define ADF4377_002F_DCLK_DIV1_2		0x1
+#define ADF4377_002F_DCLK_DIV1_8		0x2
+#define ADF4377_002F_DCLK_DIV1_32		0x3
+
+/* ADF4377 REG0031 Bit Definition */
+#define ADF4377_0031_R031_RSV1			0x09
+
+/* ADF4377 REG0032 Map */
+#define ADF4377_0032_ADC_CLK_SEL_MSK		BIT(6)
+#define ADF4377_0032_R032_RSV1_MSK		GENMASK(5, 0)
+
+/* ADF4377 REG0032 Bit Definition */
+#define ADF4377_0032_ADC_CLK_SEL_N_OP		0x0
+#define ADF4377_0032_ADC_CLK_SEL_SPI_CLK	0x1
+
+#define ADF4377_0032_R032_RSV1			0x9
+
+/* ADF4377 REG0033 Bit Definition */
+#define ADF4377_0033_R033_RSV1			0x18
+
+/* ADF4377 REG0034 Bit Definition */
+#define ADF4377_0034_R034_RSV1			0x08
+
+/* ADF4377 REG003A Bit Definition */
+#define ADF4377_003A_R03A_RSV1			0x5D
+
+/* ADF4377 REG003B Bit Definition */
+#define ADF4377_003B_R03B_RSV1			0x2B
+
+/* ADF4377 REG003D Map */
+#define ADF4377_003D_O_VCO_BAND_MSK		BIT(3)
+#define ADF4377_003D_O_VCO_CORE_MSK		BIT(2)
+#define ADF4377_003D_O_VCO_BIAS_MSK		BIT(1)
+
+/* ADF4377 REG003D Bit Definition */
+#define ADF4377_003D_O_VCO_BAND_VCO_CALIB	0x0
+#define ADF4377_003D_O_VCO_BAND_M_VCO		0x1
+
+#define ADF4377_003D_O_VCO_CORE_VCO_CALIB	0x0
+#define ADF4377_003D_O_VCO_CORE_M_VCO		0x1
+
+#define ADF4377_003D_O_VCO_BIAS_VCO_CALIB	0x0
+#define ADF4377_003D_O_VCO_BIAS_M_VCO		0x1
+
+/* ADF4377 REG0042 Map */
+#define ADF4377_0042_R042_RSV1			0x05
+
+/* ADF4377 REG0045 Map */
+#define ADF4377_0045_ADC_ST_CNV_MSK		BIT(0)
+
+/* ADF4377 REG0049 Map */
+#define ADF4377_0049_EN_CLK2_MSK		BIT(7)
+#define ADF4377_0049_EN_CLK1_MSK		BIT(6)
+#define ADF4377_0049_REF_OK_MSK			BIT(3)
+#define ADF4377_0049_ADC_BUSY_MSK		BIT(2)
+#define ADF4377_0049_FSM_BUSY_MSK		BIT(1)
+#define ADF4377_0049_LOCKED_MSK			BIT(0)
+
+/* ADF4377 REG004B Map */
+#define ADF4377_004B_VCO_CORE_MSK		GENMASK(1, 0)
+
+/* ADF4377 REG004C Map */
+#define ADF4377_004C_CHIP_TEMP_LSB_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG004D Map */
+#define ADF4377_004D_CHIP_TEMP_MSB_MSK		BIT(0)
+
+/* ADF4377 REG004F Map */
+#define ADF4377_004F_VCO_BAND_MSK		GENMASK(7, 0)
+
+/* ADF4377 REG0051 Map */
+#define ADF4377_0051_VCO_BIAS_MSK		GENMASK(3, 0)
+
+/* ADF4377 REG0054 Map */
+#define ADF4377_0054_CHIP_VERSION_MSK		GENMASK(7, 0)
+
+/* Specifications */
+#define ADF4377_SPI_READ_CMD			BIT(7)
+#define ADF4377_MAX_VCO_FREQ			(12800ULL * HZ_PER_MHZ)
+#define ADF4377_MIN_VCO_FREQ			(6400ULL * HZ_PER_MHZ)
+#define ADF4377_MAX_REFIN_FREQ			(1000 * HZ_PER_MHZ)
+#define ADF4377_MIN_REFIN_FREQ			(10 * HZ_PER_MHZ)
+#define ADF4377_MAX_FREQ_PFD			(500 * HZ_PER_MHZ)
+#define ADF4377_MIN_FREQ_PFD			(3 * HZ_PER_MHZ)
+#define ADF4377_MAX_CLKPN_FREQ			ADF4377_MAX_VCO_FREQ
+#define ADF4377_MIN_CLKPN_FREQ			(ADF4377_MIN_VCO_FREQ / 8)
+#define ADF4377_FREQ_PFD_80MHZ			(80 * HZ_PER_MHZ)
+#define ADF4377_FREQ_PFD_125MHZ			(125 * HZ_PER_MHZ)
+#define ADF4377_FREQ_PFD_160MHZ			(160 * HZ_PER_MHZ)
+#define ADF4377_FREQ_PFD_250MHZ			(250 * HZ_PER_MHZ)
+#define ADF4377_FREQ_PFD_320MHZ			(320 * HZ_PER_MHZ)
+
+enum {
+	ADF4377_FREQ,
+};
+
+enum muxout_select_mode {
+	ADF4377_MUXOUT_HIGH_Z = 0x0,
+	ADF4377_MUXOUT_LKDET = 0x1,
+	ADF4377_MUXOUT_LOW = 0x2,
+	ADF4377_MUXOUT_DIV_RCLK_2 = 0x4,
+	ADF4377_MUXOUT_DIV_NCLK_2 = 0x5,
+	ADF4377_MUXOUT_HIGH = 0x8,
+};
+
+struct adf4377_state {
+	struct spi_device	*spi;
+	struct regmap		*regmap;
+	struct clk		*clkin;
+	/* Protect against concurrent accesses to the device and data content */
+	struct mutex		lock;
+	struct notifier_block	nb;
+	/* Reference Divider */
+	unsigned int		ref_div_factor;
+	/* PFD Frequency */
+	unsigned int		f_pfd;
+	/* Input Reference Clock */
+	unsigned int		clkin_freq;
+	/* CLKOUT Divider */
+	u8			clkout_div_sel;
+	/* Feedback Divider (N) */
+	u16			n_int;
+	u16			synth_lock_timeout;
+	u16			vco_alc_timeout;
+	u16			adc_clk_div;
+	u16			vco_band_div;
+	u8			dclk_div1;
+	u8			dclk_div2;
+	u8			dclk_mode;
+	unsigned int		f_div_rclk;
+	enum muxout_select_mode	muxout_select;
+	struct gpio_desc	*gpio_ce;
+	struct gpio_desc	*gpio_enclk1;
+	struct gpio_desc	*gpio_enclk2;
+	u8			buf[2] __aligned(IIO_DMA_MINALIGN);
+};
+
+static const char * const adf4377_muxout_modes[] = {
+	[ADF4377_MUXOUT_HIGH_Z] = "high_z",
+	[ADF4377_MUXOUT_LKDET] = "lock_detect",
+	[ADF4377_MUXOUT_LOW] = "muxout_low",
+	[ADF4377_MUXOUT_DIV_RCLK_2] = "f_div_rclk_2",
+	[ADF4377_MUXOUT_DIV_NCLK_2] = "f_div_nclk_2",
+	[ADF4377_MUXOUT_HIGH] = "muxout_high",
+};
+
+static const struct reg_sequence adf4377_reg_defaults[] = {
+	{ 0x42,  ADF4377_0042_R042_RSV1 },
+	{ 0x3B,  ADF4377_003B_R03B_RSV1 },
+	{ 0x3A,  ADF4377_003A_R03A_RSV1 },
+	{ 0x34,  ADF4377_0034_R034_RSV1 },
+	{ 0x33,  ADF4377_0033_R033_RSV1 },
+	{ 0x32,  ADF4377_0032_R032_RSV1 },
+	{ 0x31,  ADF4377_0031_R031_RSV1 },
+	{ 0x2C,  ADF4377_002C_R02C_RSV1 },
+	{ 0x25,  ADF4377_0025_R025_RSV1 },
+	{ 0x23,  ADF4377_0023_R023_RSV1 },
+	{ 0x22,  ADF4377_0022_R022_RSV1 },
+	{ 0x21,  ADF4377_0021_R021_RSV1 },
+	{ 0x1f,  ADF4377_001F_R01F_RSV1 },
+	{ 0x1c,  ADF4377_001C_R01C_RSV1 },
+};
+
+static const struct regmap_config adf4377_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.read_flag_mask = BIT(7),
+	.max_register = 0x54,
+};
+
+static int adf4377_reg_access(struct iio_dev *indio_dev,
+			      unsigned int reg,
+			      unsigned int write_val,
+			      unsigned int *read_val)
+{
+	struct adf4377_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return regmap_read(st->regmap, reg, read_val);
+
+	return regmap_write(st->regmap, reg, write_val);
+}
+
+static const struct iio_info adf4377_info = {
+	.debugfs_reg_access = &adf4377_reg_access,
+};
+
+static int adf4377_soft_reset(struct adf4377_state *st)
+{
+	unsigned int read_val;
+	int ret;
+
+	ret = regmap_update_bits(st->regmap, 0x0, ADF4377_0000_SOFT_RESET_MSK |
+				 ADF4377_0000_SOFT_RESET_R_MSK,
+				 FIELD_PREP(ADF4377_0000_SOFT_RESET_MSK, 1) |
+				 FIELD_PREP(ADF4377_0000_SOFT_RESET_R_MSK, 1));
+	if (ret)
+		return ret;
+
+	return regmap_read_poll_timeout(st->regmap, 0x0, read_val,
+					!(read_val & (ADF4377_0000_SOFT_RESET_R_MSK |
+					ADF4377_0000_SOFT_RESET_R_MSK)), 200, 200 * 100);
+}
+
+static int adf4377_get_freq(struct adf4377_state *st, u64 *freq)
+{
+	unsigned int ref_div_factor, n_int;
+	u64 clkin_freq;
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = regmap_read(st->regmap, 0x12, &ref_div_factor);
+	if (ret)
+		goto exit;
+
+	ret = regmap_bulk_read(st->regmap, 0x10, st->buf, sizeof(st->buf));
+	if (ret)
+		goto exit;
+
+	clkin_freq = clk_get_rate(st->clkin);
+	ref_div_factor = FIELD_GET(ADF4377_0012_R_DIV_MSK, ref_div_factor);
+	n_int = FIELD_GET(ADF4377_0010_N_INT_LSB_MSK | ADF4377_0011_N_INT_MSB_MSK,
+			  get_unaligned_le16(&st->buf));
+
+	*freq = div_u64(clkin_freq, ref_div_factor) * n_int;
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int adf4377_set_freq(struct adf4377_state *st, u64 freq)
+{
+	unsigned int read_val;
+	u64 f_vco;
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	if (freq > ADF4377_MAX_CLKPN_FREQ || freq < ADF4377_MIN_CLKPN_FREQ) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	ret = regmap_update_bits(st->regmap, 0x1C, ADF4377_001C_EN_DNCLK_MSK |
+				 ADF4377_001C_EN_DRCLK_MSK,
+				 FIELD_PREP(ADF4377_001C_EN_DNCLK_MSK, 1) |
+				 FIELD_PREP(ADF4377_001C_EN_DRCLK_MSK, 1));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x11, ADF4377_0011_EN_AUTOCAL_MSK |
+				 ADF4377_0011_DCLK_DIV2_MSK,
+				 FIELD_PREP(ADF4377_0011_EN_AUTOCAL_MSK, 1) |
+				 FIELD_PREP(ADF4377_0011_DCLK_DIV2_MSK, st->dclk_div2));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x2E, ADF4377_002E_EN_ADC_CNV_MSK |
+				 ADF4377_002E_EN_ADC_MSK |
+				 ADF4377_002E_ADC_A_CONV_MSK,
+				 FIELD_PREP(ADF4377_002E_EN_ADC_CNV_MSK, 1) |
+				 FIELD_PREP(ADF4377_002E_EN_ADC_MSK, 1) |
+				 FIELD_PREP(ADF4377_002E_ADC_A_CONV_MSK,
+					    ADF4377_002E_ADC_A_CONV_VCO_CALIB));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x20, ADF4377_0020_EN_ADC_CLK_MSK,
+				 FIELD_PREP(ADF4377_0020_EN_ADC_CLK_MSK, 1));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x2F, ADF4377_002F_DCLK_DIV1_MSK,
+				 FIELD_PREP(ADF4377_002F_DCLK_DIV1_MSK, st->dclk_div1));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x24, ADF4377_0024_DCLK_MODE_MSK,
+				 FIELD_PREP(ADF4377_0024_DCLK_MODE_MSK, st->dclk_mode));
+	if (ret)
+		goto exit;
+
+	ret = regmap_write(st->regmap, 0x27,
+			   FIELD_PREP(ADF4377_0027_SYNTH_LOCK_TO_LSB_MSK,
+				      st->synth_lock_timeout));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x28, ADF4377_0028_SYNTH_LOCK_TO_MSB_MSK,
+				 FIELD_PREP(ADF4377_0028_SYNTH_LOCK_TO_MSB_MSK,
+					    st->synth_lock_timeout >> 8));
+	if (ret)
+		goto exit;
+
+	ret = regmap_write(st->regmap, 0x29,
+			   FIELD_PREP(ADF4377_0029_VCO_ALC_TO_LSB_MSK,
+				      st->vco_alc_timeout));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x2A, ADF4377_002A_VCO_ALC_TO_MSB_MSK,
+				 FIELD_PREP(ADF4377_002A_VCO_ALC_TO_MSB_MSK,
+					    st->vco_alc_timeout >> 8));
+	if (ret)
+		goto exit;
+
+	ret = regmap_write(st->regmap, 0x26,
+			   FIELD_PREP(ADF4377_0026_VCO_BAND_DIV_MSK, st->vco_band_div));
+	if (ret)
+		goto exit;
+
+	ret = regmap_write(st->regmap, 0x2D,
+			   FIELD_PREP(ADF4377_002D_ADC_CLK_DIV_MSK, st->adc_clk_div));
+	if (ret)
+		goto exit;
+
+	st->clkout_div_sel = 0;
+
+	f_vco = freq;
+
+	while (f_vco < ADF4377_MIN_VCO_FREQ) {
+		f_vco <<= 1;
+		st->clkout_div_sel++;
+	}
+
+	st->n_int = div_u64(freq, st->f_pfd);
+
+	ret = regmap_update_bits(st->regmap, 0x11, ADF4377_0011_EN_RDBLR_MSK |
+				 ADF4377_0011_N_INT_MSB_MSK,
+				 FIELD_PREP(ADF4377_0011_EN_RDBLR_MSK, 0) |
+				 FIELD_PREP(ADF4377_0011_N_INT_MSB_MSK, st->n_int >> 8));
+	if (ret)
+		goto exit;
+
+	ret = regmap_update_bits(st->regmap, 0x12, ADF4377_0012_R_DIV_MSK |
+				 ADF4377_0012_CLKOUT_DIV_MSK,
+				 FIELD_PREP(ADF4377_0012_CLKOUT_DIV_MSK, st->clkout_div_sel) |
+				 FIELD_PREP(ADF4377_0012_R_DIV_MSK, st->ref_div_factor));
+	if (ret)
+		goto exit;
+
+	ret = regmap_write(st->regmap, 0x10,
+			   FIELD_PREP(ADF4377_0010_N_INT_LSB_MSK, st->n_int));
+	if (ret)
+		goto exit;
+
+	ret = regmap_read_poll_timeout(st->regmap, 0x49, read_val,
+				       !(read_val & (ADF4377_0049_FSM_BUSY_MSK)), 200, 200 * 100);
+	if (ret)
+		goto exit;
+
+	/* Disable EN_DNCLK, EN_DRCLK */
+	ret = regmap_update_bits(st->regmap, 0x1C, ADF4377_001C_EN_DNCLK_MSK |
+				 ADF4377_001C_EN_DRCLK_MSK,
+				 FIELD_PREP(ADF4377_001C_EN_DNCLK_MSK, 0) |
+				 FIELD_PREP(ADF4377_001C_EN_DRCLK_MSK, 0));
+	if (ret)
+		goto exit;
+
+	/* Disable EN_ADC_CLK */
+	ret = regmap_update_bits(st->regmap, 0x20, ADF4377_0020_EN_ADC_CLK_MSK,
+				 FIELD_PREP(ADF4377_0020_EN_ADC_CLK_MSK, 0));
+	if (ret)
+		goto exit;
+
+	/* Set output Amplitude */
+	ret = regmap_update_bits(st->regmap, 0x19, ADF4377_0019_CLKOUT2_OP_MSK |
+				 ADF4377_0019_CLKOUT1_OP_MSK,
+				 FIELD_PREP(ADF4377_0019_CLKOUT1_OP_MSK,
+					    ADF4377_0019_CLKOUT_420MV) |
+				 FIELD_PREP(ADF4377_0019_CLKOUT2_OP_MSK,
+					    ADF4377_0019_CLKOUT_420MV));
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static void adf4377_gpio_init(struct adf4377_state *st)
+{
+	if (st->gpio_ce) {
+		gpiod_set_value(st->gpio_ce, 1);
+
+		/* Delay for SPI register bits to settle to their power-on reset state */
+		fsleep(200);
+	}
+
+	if (st->gpio_enclk1)
+		gpiod_set_value(st->gpio_enclk1, 1);
+
+	if (st->gpio_enclk2)
+		gpiod_set_value(st->gpio_enclk2, 1);
+}
+
+static int adf4377_init(struct adf4377_state *st)
+{
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	adf4377_gpio_init(st);
+
+	ret = adf4377_soft_reset(st);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to soft reset.\n");
+		return ret;
+	}
+
+	ret = regmap_multi_reg_write(st->regmap, adf4377_reg_defaults,
+				     ARRAY_SIZE(adf4377_reg_defaults));
+	if (ret) {
+		dev_err(&spi->dev, "Failed to set default registers.\n");
+		return ret;
+	}
+
+	ret = regmap_update_bits(st->regmap, 0x00,
+				 ADF4377_0000_SDO_ACTIVE_MSK | ADF4377_0000_SDO_ACTIVE_R_MSK,
+				 FIELD_PREP(ADF4377_0000_SDO_ACTIVE_MSK,
+					    ADF4377_0000_SDO_ACTIVE_SPI_4W) |
+				 FIELD_PREP(ADF4377_0000_SDO_ACTIVE_R_MSK,
+					    ADF4377_0000_SDO_ACTIVE_SPI_4W));
+	if (ret) {
+		dev_err(&spi->dev, "Failed to set 4-Wire Operation.\n");
+		return ret;
+	}
+
+	st->clkin_freq = clk_get_rate(st->clkin);
+
+	/* Power Up */
+	ret = regmap_write(st->regmap, 0x1a,
+			   FIELD_PREP(ADF4377_001A_PD_ALL_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_RDIV_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_NDIV_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_VCO_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_LD_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_PFDCP_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_CLKOUT1_MSK, 0) |
+			   FIELD_PREP(ADF4377_001A_PD_CLKOUT2_MSK, 0));
+	if (ret) {
+		dev_err(&spi->dev, "Failed to set power down registers.\n");
+		return ret;
+	}
+
+	/* Set Mux Output */
+	ret = regmap_update_bits(st->regmap, 0x1D,
+				 ADF4377_001D_MUXOUT_MSK,
+				 FIELD_PREP(ADF4377_001D_MUXOUT_MSK, st->muxout_select));
+	if (ret)
+		return ret;
+
+	/* Compute PFD */
+	st->ref_div_factor = 0;
+	do {
+		st->ref_div_factor++;
+		st->f_pfd = st->clkin_freq / st->ref_div_factor;
+	} while (st->f_pfd > ADF4377_MAX_FREQ_PFD);
+
+	if (st->f_pfd > ADF4377_MAX_FREQ_PFD || st->f_pfd < ADF4377_MIN_FREQ_PFD)
+		return -EINVAL;
+
+	st->f_div_rclk = st->f_pfd;
+
+	if (st->f_pfd <= ADF4377_FREQ_PFD_80MHZ) {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_1;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_1;
+		st->dclk_mode = 0;
+	} else if (st->f_pfd <= ADF4377_FREQ_PFD_125MHZ) {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_1;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_1;
+		st->dclk_mode = 1;
+	} else if (st->f_pfd <= ADF4377_FREQ_PFD_160MHZ) {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_2;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_1;
+		st->dclk_mode = 0;
+		st->f_div_rclk /= 2;
+	} else if (st->f_pfd <= ADF4377_FREQ_PFD_250MHZ) {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_2;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_1;
+		st->dclk_mode = 1;
+		st->f_div_rclk /= 2;
+	} else if (st->f_pfd <= ADF4377_FREQ_PFD_320MHZ) {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_2;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_2;
+		st->dclk_mode = 0;
+		st->f_div_rclk /= 4;
+	} else {
+		st->dclk_div1 = ADF4377_002F_DCLK_DIV1_2;
+		st->dclk_div2 = ADF4377_0011_DCLK_DIV2_2;
+		st->dclk_mode = 1;
+		st->f_div_rclk /= 4;
+	}
+
+	st->synth_lock_timeout = DIV_ROUND_UP(st->f_div_rclk, 50000);
+	st->vco_alc_timeout = DIV_ROUND_UP(st->f_div_rclk, 20000);
+	st->vco_band_div = DIV_ROUND_UP(st->f_div_rclk, 150000 * 16 * (1 << st->dclk_mode));
+	st->adc_clk_div = DIV_ROUND_UP((st->f_div_rclk / 400000 - 2), 4);
+
+	return 0;
+}
+
+static ssize_t adf4377_read(struct iio_dev *indio_dev, uintptr_t private,
+			    const struct iio_chan_spec *chan, char *buf)
+{
+	struct adf4377_state *st = iio_priv(indio_dev);
+	u64 val = 0;
+	int ret;
+
+	switch ((u32)private) {
+	case ADF4377_FREQ:
+		ret = adf4377_get_freq(st, &val);
+		if (ret)
+			return ret;
+
+		return sysfs_emit(buf, "%llu\n", val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t adf4377_write(struct iio_dev *indio_dev, uintptr_t private,
+			     const struct iio_chan_spec *chan, const char *buf,
+			     size_t len)
+{
+	struct adf4377_state *st = iio_priv(indio_dev);
+	unsigned long long freq;
+	int ret;
+
+	switch ((u32)private) {
+	case ADF4377_FREQ:
+		ret = kstrtoull(buf, 10, &freq);
+		if (ret)
+			return ret;
+
+		ret = adf4377_set_freq(st, freq);
+		if (ret)
+			return ret;
+
+		return len;
+	default:
+		return -EINVAL;
+	}
+}
+
+#define _ADF4377_EXT_INFO(_name, _shared, _ident) { \
+		.name = _name, \
+		.read = adf4377_read, \
+		.write = adf4377_write, \
+		.private = _ident, \
+		.shared = _shared, \
+	}
+
+static const struct iio_chan_spec_ext_info adf4377_ext_info[] = {
+	/*
+	 * Usually we use IIO_CHAN_INFO_FREQUENCY, but there are
+	 * values > 2^32 in order to support the entire frequency range
+	 * in Hz.
+	 */
+	_ADF4377_EXT_INFO("frequency", IIO_SEPARATE, ADF4377_FREQ),
+	{ }
+};
+
+static const struct iio_chan_spec adf4377_channels[] = {
+	{
+		.type = IIO_ALTVOLTAGE,
+		.indexed = 1,
+		.output = 1,
+		.channel = 0,
+		.ext_info = adf4377_ext_info,
+	},
+};
+
+static int adf4377_properties_parse(struct adf4377_state *st)
+{
+	struct spi_device *spi = st->spi;
+	const char *str;
+	int ret;
+
+	st->clkin = devm_clk_get_enabled(&spi->dev, "ref_in");
+	if (IS_ERR(st->clkin))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+				     "failed to get the reference input clock\n");
+
+	st->gpio_ce = devm_gpiod_get_optional(&st->spi->dev, "chip-enable",
+					      GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpio_ce))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->gpio_ce),
+				     "failed to get the CE GPIO\n");
+
+	st->gpio_enclk1 = devm_gpiod_get_optional(&st->spi->dev, "clk1-enable",
+						  GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpio_enclk1))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->gpio_enclk1),
+				     "failed to get the CE GPIO\n");
+
+	st->gpio_enclk2 = devm_gpiod_get_optional(&st->spi->dev, "clk2-enable",
+						  GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpio_enclk2))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->gpio_enclk2),
+				     "failed to get the CE GPIO\n");
+
+	ret = device_property_read_string(&spi->dev, "adi,muxout-select", &str);
+	if (ret) {
+		st->muxout_select = ADF4377_MUXOUT_HIGH_Z;
+	} else {
+		ret = match_string(adf4377_muxout_modes, ARRAY_SIZE(adf4377_muxout_modes), str);
+		if (ret < 0)
+			return ret;
+
+		st->muxout_select = ret;
+	}
+
+	return 0;
+}
+
+static int adf4377_freq_change(struct notifier_block *nb, unsigned long action, void *data)
+{
+	struct adf4377_state *st = container_of(nb, struct adf4377_state, nb);
+	int ret;
+
+	if (action == POST_RATE_CHANGE) {
+		mutex_lock(&st->lock);
+		ret = notifier_from_errno(adf4377_init(st));
+		mutex_unlock(&st->lock);
+		return ret;
+	}
+
+	return NOTIFY_OK;
+}
+
+static int adf4377_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	struct adf4377_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_spi(spi, &adf4377_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	st = iio_priv(indio_dev);
+
+	indio_dev->info = &adf4377_info;
+	indio_dev->name = "adf4377";
+	indio_dev->channels = adf4377_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adf4377_channels);
+
+	st->regmap = regmap;
+	st->spi = spi;
+	mutex_init(&st->lock);
+
+	ret = adf4377_properties_parse(st);
+	if (ret)
+		return ret;
+
+	st->nb.notifier_call = adf4377_freq_change;
+	ret = devm_clk_notifier_register(&spi->dev, st->clkin, &st->nb);
+	if (ret)
+		return ret;
+
+	ret = adf4377_init(st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id adf4377_id[] = {
+	{ "adf4377", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, adf4377_id);
+
+static const struct of_device_id adf4377_of_match[] = {
+	{ .compatible = "adi,adf4377" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, adf4377_of_match);
+
+static struct spi_driver adf4377_driver = {
+	.driver = {
+		.name = "adf4377",
+		.of_match_table = adf4377_of_match,
+	},
+	.probe = adf4377_probe,
+	.id_table = adf4377_id,
+};
+module_spi_driver(adf4377_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADF4377");
+MODULE_LICENSE("GPL");