Merge tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core & protocols:

   - Wrap datapath globals into net_aligned_data, to avoid false sharing

   - Preserve MSG_ZEROCOPY in forwarding (e.g. out of a container)

   - Add SO_INQ and SCM_INQ support to AF_UNIX

   - Add SIOCINQ support to AF_VSOCK

   - Add TCP_MAXSEG sockopt to MPTCP

   - Add IPv6 force_forwarding sysctl to enable forwarding per interface

   - Make TCP validation of whether packet fully fits in the receive
     window and the rcv_buf more strict. With increased use of HW
     aggregation a single "packet" can be multiple 100s of kB

   - Add MSG_MORE flag to optimize large TCP transmissions via sockmap,
     improves latency up to 33% for sockmap users

   - Convert TCP send queue handling from tasklet to BH workque

   - Improve BPF iteration over TCP sockets to see each socket exactly
     once

   - Remove obsolete and unused TCP RFC3517/RFC6675 loss recovery code

   - Support enabling kernel threads for NAPI processing on per-NAPI
     instance basis rather than a whole device. Fully stop the kernel
     NAPI thread when threaded NAPI gets disabled. Previously thread
     would stick around until ifdown due to tricky synchronization

   - Allow multicast routing to take effect on locally-generated packets

   - Add output interface argument for End.X in segment routing

   - MCTP: add support for gateway routing, improve bind() handling

   - Don't require rtnl_lock when fetching an IPv6 neighbor over Netlink

   - Add a new neighbor flag ("extern_valid"), which cedes refresh
     responsibilities to userspace. This is needed for EVPN multi-homing
     where a neighbor entry for a multi-homed host needs to be synced
     across all the VTEPs among which the host is multi-homed

   - Support NUD_PERMANENT for proxy neighbor entries

   - Add a new queuing discipline for IETF RFC9332 DualQ Coupled AQM

   - Add sequence numbers to netconsole messages. Unregister
     netconsole's console when all net targets are removed. Code
     refactoring. Add a number of selftests

   - Align IPSec inbound SA lookup to RFC 4301. Only SPI and protocol
     should be used for an inbound SA lookup

   - Support inspecting ref_tracker state via DebugFS

   - Don't force bonding advertisement frames tx to ~333 ms boundaries.
     Add broadcast_neighbor option to send ARP/ND on all bonded links

   - Allow providing upcall pid for the 'execute' command in openvswitch

   - Remove DCCP support from Netfilter's conntrack

   - Disallow multiple packet duplications in the queuing layer

   - Prevent use of deprecated iptables code on PREEMPT_RT

  Driver API:

   - Support RSS and hashing configuration over ethtool Netlink

   - Add dedicated ethtool callbacks for getting and setting hashing
     fields

   - Add support for power budget evaluation strategy in PSE /
     Power-over-Ethernet. Generate Netlink events for overcurrent etc

   - Support DPLL phase offset monitoring across all device inputs.
     Support providing clock reference and SYNC over separate DPLL
     inputs

   - Support traffic classes in devlink rate API for bandwidth
     management

   - Remove rtnl_lock dependency from UDP tunnel port configuration

  Device drivers:

   - Add a new Broadcom driver for 800G Ethernet (bnge)

   - Add a standalone driver for Microchip ZL3073x DPLL

   - Remove IBM's NETIUCV device driver

   - Ethernet high-speed NICs:
      - Broadcom (bnxt):
         - support zero-copy Tx of DMABUF memory
         - take page size into account for page pool recycling rings
      - Intel (100G, ice, idpf):
         - idpf: XDP and AF_XDP support preparations
         - idpf: add flow steering
         - add link_down_events statistic
         - clean up the TSPLL code
         - preparations for live VM migration
      - nVidia/Mellanox:
         - support zero-copy Rx/Tx interfaces (DMABUF and io_uring)
         - optimize context memory usage for matchers
         - expose serial numbers in devlink info
         - support PCIe congestion metrics
      - Meta (fbnic):
         - add 25G, 50G, and 100G link modes to phylink
         - support dumping FW logs
      - Marvell/Cavium:
         - support for CN20K generation of the Octeon chips
      - Amazon:
         - add HW clock (without timestamping, just hypervisor time access)

   - Ethernet virtual:
      - VirtIO net:
         - support segmentation of UDP-tunnel-encapsulated packets
      - Google (gve):
         - support packet timestamping and clock synchronization
      - Microsoft vNIC:
         - add handler for device-originated servicing events
         - allow dynamic MSI-X vector allocation
         - support Tx bandwidth clamping

   - Ethernet NICs consumer, and embedded:
      - AMD:
         - amd-xgbe: hardware timestamping and PTP clock support
      - Broadcom integrated MACs (bcmgenet, bcmasp):
         - use napi_complete_done() return value to support NAPI polling
         - add support for re-starting auto-negotiation
      - Broadcom switches (b53):
         - support BCM5325 switches
         - add bcm63xx EPHY power control
      - Synopsys (stmmac):
         - lots of code refactoring and cleanups
      - TI:
         - icssg-prueth: read firmware-names from device tree
         - icssg: PRP offload support
      - Microchip:
         - lan78xx: convert to PHYLINK for improved PHY and MAC management
         - ksz: add KSZ8463 switch support
      - Intel:
         - support similar queue priority scheme in multi-queue and
           time-sensitive networking (taprio)
         - support packet pre-emption in both
      - RealTek (r8169):
         - enable EEE at 5Gbps on RTL8126
      - Airoha:
         - add PPPoE offload support
         - MDIO bus controller for Airoha AN7583

   - Ethernet PHYs:
      - support for the IPQ5018 internal GE PHY
      - micrel KSZ9477 switch-integrated PHYs:
         - add MDI/MDI-X control support
         - add RX error counters
         - add cable test support
         - add Signal Quality Indicator (SQI) reporting
      - dp83tg720: improve reset handling and reduce link recovery time
      - support bcm54811 (and its MII-Lite interface type)
      - air_en8811h: support resume/suspend
      - support PHY counters for QCA807x and QCA808x
      - support WoL for QCA807x

   - CAN drivers:
      - rcar_canfd: support for Transceiver Delay Compensation
      - kvaser: report FW versions via devlink dev info

   - WiFi:
      - extended regulatory info support (6 GHz)
      - add statistics and beacon monitor for Multi-Link Operation (MLO)
      - support S1G aggregation, improve S1G support
      - add Radio Measurement action fields
      - support per-radio RTS threshold
      - some work around how FIPS affects wifi, which was wrong (RC4 is
        used by TKIP, not only WEP)
      - improvements for unsolicited probe response handling

   - WiFi drivers:
      - RealTek (rtw88):
         - IBSS mode for SDIO devices
      - RealTek (rtw89):
         - BT coexistence for MLO/WiFi7
         - concurrent station + P2P support
         - support for USB devices RTL8851BU/RTL8852BU
      - Intel (iwlwifi):
         - use embedded PNVM in (to be released) FW images to fix
           compatibility issues
         - many cleanups (unused FW APIs, PCIe code, WoWLAN)
         - some FIPS interoperability
      - MediaTek (mt76):
         - firmware recovery improvements
         - more MLO work
      - Qualcomm/Atheros (ath12k):
         - fix scan on multi-radio devices
         - more EHT/Wi-Fi 7 features
         - encapsulation/decapsulation offload
      - Broadcom (brcm80211):
         - support SDIO 43751 device

   - Bluetooth:
      - hci_event: add support for handling LE BIG Sync Lost event
      - ISO: add socket option to report packet seqnum via CMSG
      - ISO: support SCM_TIMESTAMPING for ISO TS

   - Bluetooth drivers:
      - intel_pcie: support Function Level Reset
      - nxpuart: add support for 4M baudrate
      - nxpuart: implement powerup sequence, reset, FW dump, and FW loading"

* tag 'net-next-6.17' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1742 commits)
  dpll: zl3073x: Fix build failure
  selftests: bpf: fix legacy netfilter options
  ipv6: annotate data-races around rt->fib6_nsiblings
  ipv6: fix possible infinite loop in fib6_info_uses_dev()
  ipv6: prevent infinite loop in rt6_nlmsg_size()
  ipv6: add a retry logic in net6_rt_notify()
  vrf: Drop existing dst reference in vrf_ip6_input_dst
  net/sched: taprio: align entry index attr validation with mqprio
  net: fsl_pq_mdio: use dev_err_probe
  selftests: rtnetlink.sh: remove esp4_offload after test
  vsock: remove unnecessary null check in vsock_getname()
  igb: xsk: solve negative overflow of nb_pkts in zerocopy mode
  stmmac: xsk: fix negative overflow of budget in zerocopy mode
  dt-bindings: ieee802154: Convert at86rf230.txt yaml format
  net: dsa: microchip: Disable PTP function of KSZ8463
  net: dsa: microchip: Setup fiber ports for KSZ8463
  net: dsa: microchip: Write switch MAC address differently for KSZ8463
  net: dsa: microchip: Use different registers for KSZ8463
  net: dsa: microchip: Add KSZ8463 switch support to KSZ DSA driver
  dt-bindings: net: dsa: microchip: Add KSZ8463 switch support
  ...

1 files changed, 626 insertions, 0 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_tspll.c b/drivers/net/ethernet/intel/ice/ice_tspll.c
new file mode 100644
index 000000000000..66320a4ab86f
--- /dev/null
+++ b/drivers/net/ethernet/intel/ice/ice_tspll.c
@@ -0,0 +1,626 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2025, Intel Corporation. */
+
+#include "ice.h"
+#include "ice_lib.h"
+#include "ice_ptp_hw.h"
+
+static const struct
+ice_tspll_params_e82x e82x_tspll_params[NUM_ICE_TSPLL_FREQ] = {
+	[ICE_TSPLL_FREQ_25_000] = {
+		.refclk_pre_div = 1,
+		.post_pll_div = 6,
+		.feedback_div = 197,
+		.frac_n_div = 2621440,
+	},
+	[ICE_TSPLL_FREQ_122_880] = {
+		.refclk_pre_div = 5,
+		.post_pll_div = 7,
+		.feedback_div = 223,
+		.frac_n_div = 524288
+	},
+	[ICE_TSPLL_FREQ_125_000] = {
+		.refclk_pre_div = 5,
+		.post_pll_div = 7,
+		.feedback_div = 223,
+		.frac_n_div = 524288
+	},
+	[ICE_TSPLL_FREQ_153_600] = {
+		.refclk_pre_div = 5,
+		.post_pll_div = 6,
+		.feedback_div = 159,
+		.frac_n_div = 1572864
+	},
+	[ICE_TSPLL_FREQ_156_250] = {
+		.refclk_pre_div = 5,
+		.post_pll_div = 6,
+		.feedback_div = 159,
+		.frac_n_div = 1572864
+	},
+	[ICE_TSPLL_FREQ_245_760] = {
+		.refclk_pre_div = 10,
+		.post_pll_div = 7,
+		.feedback_div = 223,
+		.frac_n_div = 524288
+	},
+};
+
+/**
+ * ice_tspll_clk_freq_str - Convert time_ref_freq to string
+ * @clk_freq: Clock frequency
+ *
+ * Return: specified TIME_REF clock frequency converted to a string.
+ */
+static const char *ice_tspll_clk_freq_str(enum ice_tspll_freq clk_freq)
+{
+	switch (clk_freq) {
+	case ICE_TSPLL_FREQ_25_000:
+		return "25 MHz";
+	case ICE_TSPLL_FREQ_122_880:
+		return "122.88 MHz";
+	case ICE_TSPLL_FREQ_125_000:
+		return "125 MHz";
+	case ICE_TSPLL_FREQ_153_600:
+		return "153.6 MHz";
+	case ICE_TSPLL_FREQ_156_250:
+		return "156.25 MHz";
+	case ICE_TSPLL_FREQ_245_760:
+		return "245.76 MHz";
+	default:
+		return "Unknown";
+	}
+}
+
+/**
+ * ice_tspll_default_freq - Return default frequency for a MAC type
+ * @mac_type: MAC type
+ *
+ * Return: default TSPLL frequency for a correct MAC type, -ERANGE otherwise.
+ */
+static enum ice_tspll_freq ice_tspll_default_freq(enum ice_mac_type mac_type)
+{
+	switch (mac_type) {
+	case ICE_MAC_GENERIC:
+		return ICE_TSPLL_FREQ_25_000;
+	case ICE_MAC_GENERIC_3K_E825:
+		return ICE_TSPLL_FREQ_156_250;
+	default:
+		return -ERANGE;
+	}
+}
+
+/**
+ * ice_tspll_check_params - Check if TSPLL params are correct
+ * @hw: Pointer to the HW struct
+ * @clk_freq: Clock frequency to program
+ * @clk_src: Clock source to select (TIME_REF or TCXO)
+ *
+ * Return: true if TSPLL params are correct, false otherwise.
+ */
+static bool ice_tspll_check_params(struct ice_hw *hw,
+				   enum ice_tspll_freq clk_freq,
+				   enum ice_clk_src clk_src)
+{
+	if (clk_freq >= NUM_ICE_TSPLL_FREQ) {
+		dev_warn(ice_hw_to_dev(hw), "Invalid TSPLL frequency %u\n",
+			 clk_freq);
+		return false;
+	}
+
+	if (clk_src >= NUM_ICE_CLK_SRC) {
+		dev_warn(ice_hw_to_dev(hw), "Invalid clock source %u\n",
+			 clk_src);
+		return false;
+	}
+
+	if ((hw->mac_type == ICE_MAC_GENERIC_3K_E825 ||
+	     clk_src == ICE_CLK_SRC_TCXO) &&
+	    clk_freq != ice_tspll_default_freq(hw->mac_type)) {
+		dev_warn(ice_hw_to_dev(hw), "Unsupported frequency for this clock source\n");
+		return false;
+	}
+
+	return true;
+}
+
+/**
+ * ice_tspll_clk_src_str - Convert time_ref_src to string
+ * @clk_src: Clock source
+ *
+ * Return: specified clock source converted to its string name
+ */
+static const char *ice_tspll_clk_src_str(enum ice_clk_src clk_src)
+{
+	switch (clk_src) {
+	case ICE_CLK_SRC_TCXO:
+		return "TCXO";
+	case ICE_CLK_SRC_TIME_REF:
+		return "TIME_REF";
+	default:
+		return "Unknown";
+	}
+}
+
+/**
+ * ice_tspll_log_cfg - Log current/new TSPLL configuration
+ * @hw: Pointer to the HW struct
+ * @enable: CGU enabled/disabled
+ * @clk_src: Current clock source
+ * @tspll_freq: Current clock frequency
+ * @lock: CGU lock status
+ * @new_cfg: true if this is a new config
+ */
+static void ice_tspll_log_cfg(struct ice_hw *hw, bool enable, u8 clk_src,
+			      u8 tspll_freq, bool lock, bool new_cfg)
+{
+	dev_dbg(ice_hw_to_dev(hw),
+		"%s TSPLL configuration -- %s, src %s, freq %s, PLL %s\n",
+		new_cfg ? "New" : "Current", str_enabled_disabled(enable),
+		ice_tspll_clk_src_str((enum ice_clk_src)clk_src),
+		ice_tspll_clk_freq_str((enum ice_tspll_freq)tspll_freq),
+		lock ? "locked" : "unlocked");
+}
+
+/**
+ * ice_tspll_cfg_e82x - Configure the Clock Generation Unit TSPLL
+ * @hw: Pointer to the HW struct
+ * @clk_freq: Clock frequency to program
+ * @clk_src: Clock source to select (TIME_REF, or TCXO)
+ *
+ * Configure the Clock Generation Unit with the desired clock frequency and
+ * time reference, enabling the PLL which drives the PTP hardware clock.
+ *
+ * Return:
+ * * %0       - success
+ * * %-EINVAL - input parameters are incorrect
+ * * %-EBUSY  - failed to lock TSPLL
+ * * %other   - CGU read/write failure
+ */
+static int ice_tspll_cfg_e82x(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
+			      enum ice_clk_src clk_src)
+{
+	u32 val, r9, r24;
+	int err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &r9);
+	if (err)
+		return err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R24, &r24);
+	if (err)
+		return err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_RO_BWM_LF, &val);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, !!FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r24),
+			  FIELD_GET(ICE_CGU_R23_R24_TIME_REF_SEL, r24),
+			  FIELD_GET(ICE_CGU_R9_TIME_REF_FREQ_SEL, r9),
+			  !!FIELD_GET(ICE_CGU_RO_BWM_LF_TRUE_LOCK, val),
+			  false);
+
+	/* Disable the PLL before changing the clock source or frequency */
+	if (FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r24)) {
+		r24 &= ~ICE_CGU_R23_R24_TSPLL_ENABLE;
+
+		err = ice_write_cgu_reg(hw, ICE_CGU_R24, r24);
+		if (err)
+			return err;
+	}
+
+	/* Set the frequency */
+	r9 &= ~ICE_CGU_R9_TIME_REF_FREQ_SEL;
+	r9 |= FIELD_PREP(ICE_CGU_R9_TIME_REF_FREQ_SEL, clk_freq);
+	err = ice_write_cgu_reg(hw, ICE_CGU_R9, r9);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL feedback divisor */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R19, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_R19_TSPLL_FBDIV_INTGR_E82X | ICE_CGU_R19_TSPLL_NDIVRATIO);
+	val |= FIELD_PREP(ICE_CGU_R19_TSPLL_FBDIV_INTGR_E82X,
+			  e82x_tspll_params[clk_freq].feedback_div);
+	val |= FIELD_PREP(ICE_CGU_R19_TSPLL_NDIVRATIO, 1);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R19, val);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL post divisor */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R22, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_R22_TIME1588CLK_DIV |
+		 ICE_CGU_R22_TIME1588CLK_DIV2);
+	val |= FIELD_PREP(ICE_CGU_R22_TIME1588CLK_DIV,
+			  e82x_tspll_params[clk_freq].post_pll_div);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R22, val);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL pre divisor and clock source */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R24, &r24);
+	if (err)
+		return err;
+
+	r24 &= ~(ICE_CGU_R23_R24_REF1588_CK_DIV | ICE_CGU_R24_FBDIV_FRAC |
+		 ICE_CGU_R23_R24_TIME_REF_SEL);
+	r24 |= FIELD_PREP(ICE_CGU_R23_R24_REF1588_CK_DIV,
+			  e82x_tspll_params[clk_freq].refclk_pre_div);
+	r24 |= FIELD_PREP(ICE_CGU_R24_FBDIV_FRAC,
+			  e82x_tspll_params[clk_freq].frac_n_div);
+	r24 |= FIELD_PREP(ICE_CGU_R23_R24_TIME_REF_SEL, clk_src);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R24, r24);
+	if (err)
+		return err;
+
+	/* Wait to ensure everything is stable */
+	usleep_range(10, 20);
+
+	/* Finally, enable the PLL */
+	r24 |= ICE_CGU_R23_R24_TSPLL_ENABLE;
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R24, r24);
+	if (err)
+		return err;
+
+	/* Wait at least 1 ms to verify if the PLL locks */
+	usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_RO_BWM_LF, &val);
+	if (err)
+		return err;
+
+	if (!(val & ICE_CGU_RO_BWM_LF_TRUE_LOCK)) {
+		dev_warn(ice_hw_to_dev(hw), "CGU PLL failed to lock\n");
+		return -EBUSY;
+	}
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &r9);
+	if (err)
+		return err;
+	err = ice_read_cgu_reg(hw, ICE_CGU_R24, &r24);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, !!FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r24),
+			  FIELD_GET(ICE_CGU_R23_R24_TIME_REF_SEL, r24),
+			  FIELD_GET(ICE_CGU_R9_TIME_REF_FREQ_SEL, r9),
+			  true, true);
+
+	return 0;
+}
+
+/**
+ * ice_tspll_dis_sticky_bits_e82x - disable TSPLL sticky bits
+ * @hw: Pointer to the HW struct
+ *
+ * Configure the Clock Generation Unit TSPLL sticky bits so they don't latch on
+ * losing TSPLL lock, but always show current state.
+ *
+ * Return: 0 on success, other error codes when failed to read/write CGU.
+ */
+static int ice_tspll_dis_sticky_bits_e82x(struct ice_hw *hw)
+{
+	u32 val;
+	int err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_CNTR_BIST, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_CNTR_BIST_PLLLOCK_SEL_0 |
+		 ICE_CGU_CNTR_BIST_PLLLOCK_SEL_1);
+
+	return ice_write_cgu_reg(hw, ICE_CGU_CNTR_BIST, val);
+}
+
+/**
+ * ice_tspll_cfg_e825c - Configure the TSPLL for E825-C
+ * @hw: Pointer to the HW struct
+ * @clk_freq: Clock frequency to program
+ * @clk_src: Clock source to select (TIME_REF, or TCXO)
+ *
+ * Configure the Clock Generation Unit with the desired clock frequency and
+ * time reference, enabling the PLL which drives the PTP hardware clock.
+ *
+ * Return:
+ * * %0       - success
+ * * %-EINVAL - input parameters are incorrect
+ * * %-EBUSY  - failed to lock TSPLL
+ * * %other   - CGU read/write failure
+ */
+static int ice_tspll_cfg_e825c(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
+			       enum ice_clk_src clk_src)
+{
+	u32 val, r9, r23;
+	int err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &r9);
+	if (err)
+		return err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R23, &r23);
+	if (err)
+		return err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_RO_LOCK, &val);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, !!FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r23),
+			  FIELD_GET(ICE_CGU_R23_R24_TIME_REF_SEL, r23),
+			  FIELD_GET(ICE_CGU_R9_TIME_REF_FREQ_SEL, r9),
+			  !!FIELD_GET(ICE_CGU_RO_LOCK_TRUE_LOCK, val),
+			  false);
+
+	/* Disable the PLL before changing the clock source or frequency */
+	if (FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r23)) {
+		r23 &= ~ICE_CGU_R23_R24_TSPLL_ENABLE;
+
+		err = ice_write_cgu_reg(hw, ICE_CGU_R23, r23);
+		if (err)
+			return err;
+	}
+
+	if (FIELD_GET(ICE_CGU_R9_TIME_SYNC_EN, r9)) {
+		r9 &= ~ICE_CGU_R9_TIME_SYNC_EN;
+
+		err = ice_write_cgu_reg(hw, ICE_CGU_R9, r9);
+		if (err)
+			return err;
+	}
+
+	/* Set the frequency and enable the correct receiver */
+	r9 &= ~(ICE_CGU_R9_TIME_REF_FREQ_SEL | ICE_CGU_R9_CLK_EREF0_EN |
+		ICE_CGU_R9_TIME_REF_EN);
+	r9 |= FIELD_PREP(ICE_CGU_R9_TIME_REF_FREQ_SEL, clk_freq);
+	if (clk_src == ICE_CLK_SRC_TCXO)
+		r9 |= ICE_CGU_R9_CLK_EREF0_EN;
+	else
+		r9 |= ICE_CGU_R9_TIME_REF_EN;
+	r9 |= ICE_CGU_R9_TIME_SYNC_EN;
+	err = ice_write_cgu_reg(hw, ICE_CGU_R9, r9);
+	if (err)
+		return err;
+
+	/* Choose the referenced frequency */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R16, &val);
+	if (err)
+		return err;
+	val &= ~ICE_CGU_R16_TSPLL_CK_REFCLKFREQ;
+	val |= FIELD_PREP(ICE_CGU_R16_TSPLL_CK_REFCLKFREQ,
+			  ICE_TSPLL_CK_REFCLKFREQ_E825);
+	err = ice_write_cgu_reg(hw, ICE_CGU_R16, val);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL feedback divisor */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R19, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_R19_TSPLL_FBDIV_INTGR_E825 |
+		 ICE_CGU_R19_TSPLL_NDIVRATIO);
+	val |= FIELD_PREP(ICE_CGU_R19_TSPLL_FBDIV_INTGR_E825,
+			  ICE_TSPLL_FBDIV_INTGR_E825);
+	val |= FIELD_PREP(ICE_CGU_R19_TSPLL_NDIVRATIO,
+			  ICE_TSPLL_NDIVRATIO_E825);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R19, val);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL post divisor, these two are constant */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R22, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_R22_TIME1588CLK_DIV |
+		 ICE_CGU_R22_TIME1588CLK_DIV2);
+	val |= FIELD_PREP(ICE_CGU_R22_TIME1588CLK_DIV, 5);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R22, val);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL pre divisor (constant) and clock source */
+	err = ice_read_cgu_reg(hw, ICE_CGU_R23, &r23);
+	if (err)
+		return err;
+
+	r23 &= ~(ICE_CGU_R23_R24_REF1588_CK_DIV | ICE_CGU_R23_R24_TIME_REF_SEL);
+	r23 |= FIELD_PREP(ICE_CGU_R23_R24_TIME_REF_SEL, clk_src);
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R23, r23);
+	if (err)
+		return err;
+
+	/* Clear the R24 register. */
+	err = ice_write_cgu_reg(hw, ICE_CGU_R24, 0);
+	if (err)
+		return err;
+
+	/* Wait to ensure everything is stable */
+	usleep_range(10, 20);
+
+	/* Finally, enable the PLL */
+	r23 |= ICE_CGU_R23_R24_TSPLL_ENABLE;
+
+	err = ice_write_cgu_reg(hw, ICE_CGU_R23, r23);
+	if (err)
+		return err;
+
+	/* Wait at least 1 ms to verify if the PLL locks */
+	usleep_range(USEC_PER_MSEC, 2 * USEC_PER_MSEC);
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_RO_LOCK, &val);
+	if (err)
+		return err;
+
+	if (!(val & ICE_CGU_RO_LOCK_TRUE_LOCK)) {
+		dev_warn(ice_hw_to_dev(hw), "CGU PLL failed to lock\n");
+		return -EBUSY;
+	}
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &r9);
+	if (err)
+		return err;
+	err = ice_read_cgu_reg(hw, ICE_CGU_R23, &r23);
+	if (err)
+		return err;
+
+	ice_tspll_log_cfg(hw, !!FIELD_GET(ICE_CGU_R23_R24_TSPLL_ENABLE, r23),
+			  FIELD_GET(ICE_CGU_R23_R24_TIME_REF_SEL, r23),
+			  FIELD_GET(ICE_CGU_R9_TIME_REF_FREQ_SEL, r9),
+			  true, true);
+
+	return 0;
+}
+
+/**
+ * ice_tspll_dis_sticky_bits_e825c - disable TSPLL sticky bits for E825-C
+ * @hw: Pointer to the HW struct
+ *
+ * Configure the Clock Generation Unit TSPLL sticky bits so they don't latch on
+ * losing TSPLL lock, but always show current state.
+ *
+ * Return: 0 on success, other error codes when failed to read/write CGU.
+ */
+static int ice_tspll_dis_sticky_bits_e825c(struct ice_hw *hw)
+{
+	u32 val;
+	int err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_BW_TDC, &val);
+	if (err)
+		return err;
+
+	val &= ~ICE_CGU_BW_TDC_PLLLOCK_SEL;
+
+	return ice_write_cgu_reg(hw, ICE_CGU_BW_TDC, val);
+}
+
+/**
+ * ice_tspll_cfg_pps_out_e825c - Enable/disable 1PPS output and set amplitude
+ * @hw: pointer to the HW struct
+ * @enable: true to enable 1PPS output, false to disable it
+ *
+ * Return: 0 on success, other negative error code when CGU read/write failed.
+ */
+int ice_tspll_cfg_pps_out_e825c(struct ice_hw *hw, bool enable)
+{
+	u32 val;
+	int err;
+
+	err = ice_read_cgu_reg(hw, ICE_CGU_R9, &val);
+	if (err)
+		return err;
+
+	val &= ~(ICE_CGU_R9_ONE_PPS_OUT_EN | ICE_CGU_R9_ONE_PPS_OUT_AMP);
+	val |= FIELD_PREP(ICE_CGU_R9_ONE_PPS_OUT_EN, enable) |
+	       ICE_CGU_R9_ONE_PPS_OUT_AMP;
+
+	return ice_write_cgu_reg(hw, ICE_CGU_R9, val);
+}
+
+/**
+ * ice_tspll_cfg - Configure the Clock Generation Unit TSPLL
+ * @hw: Pointer to the HW struct
+ * @clk_freq: Clock frequency to program
+ * @clk_src: Clock source to select (TIME_REF, or TCXO)
+ *
+ * Configure the Clock Generation Unit with the desired clock frequency and
+ * time reference, enabling the TSPLL which drives the PTP hardware clock.
+ *
+ * Return: 0 on success, -ERANGE on unsupported MAC type, other negative error
+ *         codes when failed to configure CGU.
+ */
+static int ice_tspll_cfg(struct ice_hw *hw, enum ice_tspll_freq clk_freq,
+			 enum ice_clk_src clk_src)
+{
+	switch (hw->mac_type) {
+	case ICE_MAC_GENERIC:
+		return ice_tspll_cfg_e82x(hw, clk_freq, clk_src);
+	case ICE_MAC_GENERIC_3K_E825:
+		return ice_tspll_cfg_e825c(hw, clk_freq, clk_src);
+	default:
+		return -ERANGE;
+	}
+}
+
+/**
+ * ice_tspll_dis_sticky_bits - disable TSPLL sticky bits
+ * @hw: Pointer to the HW struct
+ *
+ * Configure the Clock Generation Unit TSPLL sticky bits so they don't latch on
+ * losing TSPLL lock, but always show current state.
+ *
+ * Return: 0 on success, -ERANGE on unsupported MAC type.
+ */
+static int ice_tspll_dis_sticky_bits(struct ice_hw *hw)
+{
+	switch (hw->mac_type) {
+	case ICE_MAC_GENERIC:
+		return ice_tspll_dis_sticky_bits_e82x(hw);
+	case ICE_MAC_GENERIC_3K_E825:
+		return ice_tspll_dis_sticky_bits_e825c(hw);
+	default:
+		return -ERANGE;
+	}
+}
+
+/**
+ * ice_tspll_init - Initialize TSPLL with settings from firmware
+ * @hw: Pointer to the HW structure
+ *
+ * Initialize the Clock Generation Unit of the E82X/E825 device.
+ *
+ * Return: 0 on success, other error codes when failed to read/write/cfg CGU.
+ */
+int ice_tspll_init(struct ice_hw *hw)
+{
+	struct ice_ts_func_info *ts_info = &hw->func_caps.ts_func_info;
+	enum ice_tspll_freq tspll_freq;
+	enum ice_clk_src clk_src;
+	int err;
+
+	/* Only E822, E823 and E825 products support TSPLL */
+	if (hw->mac_type != ICE_MAC_GENERIC &&
+	    hw->mac_type != ICE_MAC_GENERIC_3K_E825)
+		return 0;
+
+	tspll_freq = (enum ice_tspll_freq)ts_info->time_ref;
+	clk_src = (enum ice_clk_src)ts_info->clk_src;
+	if (!ice_tspll_check_params(hw, tspll_freq, clk_src))
+		return -EINVAL;
+
+	/* Disable sticky lock detection so lock status reported is accurate */
+	err = ice_tspll_dis_sticky_bits(hw);
+	if (err)
+		return err;
+
+	/* Configure the TSPLL using the parameters from the function
+	 * capabilities.
+	 */
+	err = ice_tspll_cfg(hw, tspll_freq, clk_src);
+	if (err) {
+		dev_warn(ice_hw_to_dev(hw), "Failed to lock TSPLL to predefined frequency. Retrying with fallback frequency.\n");
+
+		/* Try to lock to internal TCXO as a fallback. */
+		tspll_freq = ice_tspll_default_freq(hw->mac_type);
+		clk_src = ICE_CLK_SRC_TCXO;
+		err = ice_tspll_cfg(hw, tspll_freq, clk_src);
+		if (err)
+			dev_warn(ice_hw_to_dev(hw), "Failed to lock TSPLL to fallback frequency.\n");
+	}
+
+	return err;
+}