[PATCH v3 0/4] clk: qcom: Add Nord DPRX clock controller support

[Taniya Das]

Add support for the DisplayPort Receiver (DPRX) clock controllers found
on Qualcomm Nord devices. There are two identical DPRX clock controller
instances (DPRX0 and DPRX1), each providing clocks for the DPRX core,
audio, AHB and video memory paths, along with their core PLLs.

The DPRX PLLs are ZONDA_OLE instances whose PLL_ALPHA_VAL register has
been widened to 28 bits to carry the fractional word at a finer
resolution. The alpha-PLL core must support that width for the DPRX PLLs
to lock to and report the correct rate.

The series is organized as follows:

  - Patch 1 fixes Zonda PLL L-value rounding.
  - Patch 2 adds alpha-PLL support for a 28-bit ALPHA_VAL width.
  - Patch 3 documents the Nord DPRX clock controller DT bindings.
  - Patch 4 adds the two DPRX clock controller drivers.

Changes in v3:
- Add a separate fix for Zonda PLL L-value rounding.
- Add runtime PM support and use masked divider register updates.
- Use the preferred items form for the power-domains binding property.
- Link to v2: https://lore.kernel.org/r/20260924-nords_dprx-v2-0-fa4364e087ef@xxxxxxxxxxxxxxxx

Changes in v2:
- Address review comments: remove unused definitions and includes, rewrap the
  alpha-width ternary, and clarify that DPRXCC provides clocks and resets.
- Add RB-by tag [Abel]
- Link to v1: https://lore.kernel.org/r/20260907-nords_dprx-v1-0-d472af3f01b1@xxxxxxxxxxxxxxxx

Signed-off-by: Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>
---
Taniya Das (4):
      clk: qcom: clk-alpha-pll: fix Zonda L value rounding
      clk: qcom: clk-alpha-pll: support a 28-bit ALPHA_VAL width
      dt-bindings: clock: qcom: document the Nord DPRX Clock Controller
      clk: qcom: dprxcc: Add Nord DPRX clock controller support

 .../bindings/clock/qcom,nord-dprxcc.yaml           |  67 ++++
 drivers/clk/qcom/Kconfig                           |  11 +
 drivers/clk/qcom/Makefile                          |   1 +
 drivers/clk/qcom/clk-alpha-pll.c                   |  10 +-
 drivers/clk/qcom/clk-alpha-pll.h                   |   3 +
 drivers/clk/qcom/dprxcc0-nord.c                    | 441 +++++++++++++++++++++
 drivers/clk/qcom/dprxcc1-nord.c                    | 440 ++++++++++++++++++++
 include/dt-bindings/clock/qcom,nord-dprxcc.h       |  27 ++
 8 files changed, 995 insertions(+), 5 deletions(-)
---
base-commit: f1ac44c32cba88ad65dcecd4a279661d14e93651
change-id: 20260903-nords_dprx-4903d7acc841

Best regards,
-- 
Taniya Das <taniya.das@xxxxxxxxxxxxxxxx>