[PATCH v2 00/12] clk: qcom: ipq-cmn-pll: Add IPQ5210 CMN PLL support

The CMN (Common) PLL block of IPQ5210 is almost same as that of IPQ9574
which is currently supported by the driver. It accepts a 48 MHz reference
clock from the on-board Wi-Fi block and is configured to run at 12 GHz.
The difference is in the output clocks.

This patch series adds support for IPQ5210 into the CMN PLL clock driver.
On the IPQ5210, the CMN PLL block supplies a broad set of output clocks
to the networking hardware and GCC:

  - NSS (network subsystem): configurable rate via 6-bit divider
  - PPE (packet process engine): configurable rate via 6-bit divider
  - PON (passive optical network): configurable rate via 8-bit divider,
    plus a fixed 31.25 MHz UNIPHY mode
  - EPHY-RAW: 125 MHz or 312.5 MHz for the SoC-integrated Ethernet PHY
    (EPHY), which supports up to 2.5G link speed:
      125 MHz for 1G/100M/10M, 312.5 MHz for 2.5G
  - Gated fixed-rate outputs: PCS 31.25 MHz, ETH0/1/2 50 MHz,
    EPHY 50 MHz, ETH 25 MHz
  - Fixed-rate outputs: XO 24 MHz, sleep 32 kHz

The patch series is organised as follows:

   1/12  clk: convert fixed-rate registration to devm, remove remove callback
   2/12  dt-bindings + clock ID header for IPQ5210
   3/12  CLK_DIVIDER_EVEN_INTEGERS_NO_OFFSET flag in the generic clk divider
   4/12  clk-regmap-divider support for CLK_DIVIDER_* flags
   5/12  NSS configurable divider clock
   6/12  PPE configurable divider clock
   7/12  PON reference clock with enable/disable and divider
   8/12  EPHY-RAW 125/312.5 MHz select clock
   9/12  clk_fixed_gate gate clock type for gated fixed-rate outputs
  10/12  IPQ5210 output clock array and device match table entry
  11/12  DTS node in ipq5210.dtsi
  12/12  Update IPQ5210 xo_board to use fixed-factor-clock

Changes in v2:
  - Introduce a new CLK_DIVIDER_EVEN_INTEGERS_NO_OFFSET flag in the
    generic clk divider framework and re-register the NSS/PPE clocks
    as plain clk_regmap_div instances instead of hand-rolled ops.
  - Replace the composite clk_fixed_rate + clk_gate implementation for
    gated fixed clocks with a dedicated clk_fixed_gate type that reads/
    modifies the shared gate register through regmap.
  - Replace the rate/enable_bit/strcmp(name, ...) runtime inference in
    ipq_cmn_pll_register_clks() with an explicit enum cmn_pll_clk_type
    field, making each output clock's registration path self-describing
    instead of implicit in its rate/name/enable_bit fields.
  - Update the EPHY-RAW clock's determine_rate() to pick the nearest of
    the two supported rates (125 MHz / 312.5 MHz) using the same abs_diff()
- Link to v1: https://patch.msgid.link/[email protected]

---
Luo Jie (12):
      clk: qcom: ipq-cmn-pll: Use devm_clk_hw_register_fixed_rate_parent_data
      dt-bindings: clock: qcom: Add CMN PLL support for IPQ5210 SoC
      clk: divider: Introduce CLK_DIVIDER_EVEN_INTEGERS_NO_OFFSET flag
      clk: qcom: clk-regmap-divider: Support CLK_DIVIDER_* flags
      clk: qcom: ipq-cmn-pll: Add NSS clock support
      clk: qcom: ipq-cmn-pll: Add PPE clock support
      clk: qcom: ipq-cmn-pll: Add PON reference clock support
      clk: qcom: ipq-cmn-pll: Add EPHY-RAW clock support
      clk: qcom: ipq-cmn-pll: Add clock gate support for fixed clocks
      clk: qcom: ipq-cmn-pll: Add all output clocks for IPQ5210
      arm64: dts: qcom: ipq5210: Add CMN PLL device node
      arm64: dts: qcom: Update IPQ5210 xo_board to use fixed factor clock

 .../bindings/clock/qcom,ipq9574-cmn-pll.yaml       |   1 +
 arch/arm64/boot/dts/qcom/ipq5210-rdp504.dts        |  22 +-
 arch/arm64/boot/dts/qcom/ipq5210.dtsi              |  25 +
 drivers/clk/clk-divider.c                          |  22 +
 drivers/clk/qcom/clk-regmap-divider.c              |  14 +-
 drivers/clk/qcom/clk-regmap-divider.h              |   1 +
 drivers/clk/qcom/ipq-cmn-pll.c                     | 554 +++++++++++++++++++--
 include/dt-bindings/clock/qcom,ipq5210-cmn-pll.h   |  30 ++
 include/linux/clk-provider.h                       |   3 +
 9 files changed, 633 insertions(+), 39 deletions(-)
---
base-commit: ea2bff00da89d7767d677bb68470130ba96f4928
change-id: 20260724-qcom_ipq5210_cmnpll-0eb9a9615dff

Best regards,
--  
Luo Jie <[email protected]>