[PATCH v7 00/10] clk: realtek: Add RTD1625 clock support

[Yu-Chun Lin <eleanor.lin@realtek.com>]

Hello,

This patch series adds clock support for Realtek's RTD1625 platform.
The series includes:
1. Device Tree: Add clock controller nodes.
2. Infrastructure: reset controller, basic clocks, PLLs, gate clocks, mux
clocks, and MMC-tuned PLLs.
3. Platform drivers: two clock controller drivers for RTD1625-CRT and
RTD1625-ISO.

Best regards,
Yu-Chun Lin
---
Changes in v7:

General:
- Update copyright year to include 2026.
- Use EXPORT_SYMBOL_NS_GPL() instead of EXPORT_SYMBOL_GPL().
- Add missing header inclusions to follow the "Include What You Use" principle.
- Sort header inclusions in alphabetical order.
- Sort local variables in reverse Christmas tree order.
- Add const qualifiers where appropriate.
- Fix coding style issues.

Patch 2:
- Move data->rcdev.owner = THIS_MODULE to the caller.
- Make config build-testable with COMPILE_TEST.
- Retrieve regmap via platform data.
- Append the U suffix to constants to prevent integer overflow.

Patch 3:
- Pass regmap as platform data.
- Replace dev_warn() with dev_err_probe() for clock hardware registration
failures.

Patch 4:
- Add a spinlock to synchronize PLL operations (clk_pll_disable,
clk_pll_is_enabled, clk_pll_enable, clk_pll_recalc_rate, clk_pll_set_rate).
- Remove unused macros and move IS_FREQ_TABLE_END to the specific file
where it is used.

Patch 6:
- Remove unused rtk_clk_regmap_mux_ro_ops.

Patch 7:
- Fix incorrect usage of the BIT() macro.
- Return immediately upon encountering the first error instead of accumulating
return values using bitwise OR.

Patch 8 & 9:
- Add locking to synchronize PLL changes.
- Set module owner in the specific driver.

v6: https://lore.kernel.org/lkml/20260402073957.2742459-1-eleanor.lin@realtek.com/

Cheng-Yu Lee (8):
  reset: Add Realtek basic reset support
  clk: realtek: Introduce a common probe()
  clk: realtek: Add support for phase locked loops (PLLs)
  clk: realtek: Add support for gate clock
  clk: realtek: Add support for mux clock
  clk: realtek: Add support for MMC-tuned PLL clocks
  clk: realtek: Add RTD1625-CRT clock controller driver
  clk: realtek: Add RTD1625-ISO clock controller driver

Yu-Chun Lin (2):
  dt-bindings: clock: Add Realtek RTD1625 Clock & Reset Controller
  arm64: dts: realtek: Add clock support for RTD1625

 .../bindings/clock/realtek,rtd1625-clk.yaml   |  58 ++
 MAINTAINERS                                   |  20 +
 arch/arm64/boot/dts/realtek/kent.dtsi         |  33 +
 drivers/clk/Kconfig                           |   1 +
 drivers/clk/Makefile                          |   1 +
 drivers/clk/realtek/Kconfig                   |  46 +
 drivers/clk/realtek/Makefile                  |  13 +
 drivers/clk/realtek/clk-pll-mmc.c             | 453 ++++++++++
 drivers/clk/realtek/clk-pll.c                 | 201 +++++
 drivers/clk/realtek/clk-pll.h                 |  61 ++
 drivers/clk/realtek/clk-regmap-gate.c         |  70 ++
 drivers/clk/realtek/clk-regmap-gate.h         |  65 ++
 drivers/clk/realtek/clk-regmap-mux.c          |  41 +
 drivers/clk/realtek/clk-regmap-mux.h          |  43 +
 drivers/clk/realtek/clk-rtd1625-crt.c         | 791 ++++++++++++++++++
 drivers/clk/realtek/clk-rtd1625-iso.c         | 151 ++++
 drivers/clk/realtek/common.c                  |  66 ++
 drivers/clk/realtek/common.h                  |  37 +
 drivers/clk/realtek/freq_table.c              |  38 +
 drivers/clk/realtek/freq_table.h              |  16 +
 drivers/reset/Kconfig                         |   1 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/realtek/Kconfig                 |  19 +
 drivers/reset/realtek/Makefile                |   3 +
 drivers/reset/realtek/common.c                |  90 ++
 drivers/reset/realtek/common.h                |  29 +
 drivers/reset/realtek/reset-rtd1625-crt.c     | 187 +++++
 drivers/reset/realtek/reset-rtd1625-iso.c     |  99 +++
 .../dt-bindings/clock/realtek,rtd1625-clk.h   | 164 ++++
 include/dt-bindings/reset/realtek,rtd1625.h   | 171 ++++
 30 files changed, 2969 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/clock/realtek,rtd1625-clk.yaml
 create mode 100644 drivers/clk/realtek/Kconfig
 create mode 100644 drivers/clk/realtek/Makefile
 create mode 100644 drivers/clk/realtek/clk-pll-mmc.c
 create mode 100644 drivers/clk/realtek/clk-pll.c
 create mode 100644 drivers/clk/realtek/clk-pll.h
 create mode 100644 drivers/clk/realtek/clk-regmap-gate.c
 create mode 100644 drivers/clk/realtek/clk-regmap-gate.h
 create mode 100644 drivers/clk/realtek/clk-regmap-mux.c
 create mode 100644 drivers/clk/realtek/clk-regmap-mux.h
 create mode 100644 drivers/clk/realtek/clk-rtd1625-crt.c
 create mode 100644 drivers/clk/realtek/clk-rtd1625-iso.c
 create mode 100644 drivers/clk/realtek/common.c
 create mode 100644 drivers/clk/realtek/common.h
 create mode 100644 drivers/clk/realtek/freq_table.c
 create mode 100644 drivers/clk/realtek/freq_table.h
 create mode 100644 drivers/reset/realtek/Kconfig
 create mode 100644 drivers/reset/realtek/Makefile
 create mode 100644 drivers/reset/realtek/common.c
 create mode 100644 drivers/reset/realtek/common.h
 create mode 100644 drivers/reset/realtek/reset-rtd1625-crt.c
 create mode 100644 drivers/reset/realtek/reset-rtd1625-iso.c
 create mode 100644 include/dt-bindings/clock/realtek,rtd1625-clk.h
 create mode 100644 include/dt-bindings/reset/realtek,rtd1625.h

-- 
2.34.1