[PATCH v3 0/3] Add the missing mpll3 clock and clock controller nodes

* [PATCH v3 0/3] Add the missing mpll3 clock and clock controller nodes
@ 2026-03-26  9:26 Jian Hu
  2026-03-26  9:26 ` [PATCH v3 1/3] dt-bindings: clock: amlogic: Fix redundant hyphen in "amlogic,t7-gp1--pll" string Jian Hu
                   ` (4 more replies)
  0 siblings, 5 replies; 10+ messages in thread
From: Jian Hu @ 2026-03-26  9:26 UTC (permalink / raw)
  To: Jerome Brunet, Neil Armstrong, Kevin Hilman, Martin Blumenstingl,
	Stephen Boyd, Michael Turquette, robh+dt, Rob Herring,
	Krzysztof Kozlowski, Conor Dooley
  Cc: Jian Hu, devicetree, linux-clk, linux-amlogic, linux-kernel,
	linux-arm-kernel, Ronald Claveau, Ferass El Hafidi

This series adds the missing mpll3 parent clock and completes the
Amlogic T7 SoC clock controller DT support.

- Fix redundant hyphen in for gp1 pll
- Add the missing mpll3 parent clock definition to t7-peripherals-clkc.yaml
- Add Amlogic T7 SoC clock controller nodes

Changes in v3 since v2 at [2]:

- Move Ronald's SoB tag to the top (as original author of the base patches)
- Add Krzysztof's Reviewed-by for Patch 2
- Update cover letter structure for clarity

Changes in v2 since v1 at [1]:

- Add Ronald Claveau's Signed-off-by to the first and third patches
- Fix compilation error for amlogic-peripherals-clkc.yaml
- Update commit message for amlogic-peripherals-clkc.yaml
- Add Fixes tag
- Remove the blank line in the watchdog node of meson-t7.dtsi
- Add 'reg' property to sram node
- Add a space after the clock controller label

### Background
This series is based on Ronald's initial T7 clock series [3], which aimed
to enable T7 EMMC DT but lacked a complete clock controller implementation.
The T7 clock tree in Ronald's series (fixed PLL, fixed fdivX and sys clocks)
is handled by the SCP firmware via SCMI [4]. Therefore, his clock drivers
do not need to be added. I have discussed with Ronald and agreed that I
will submit the T7 clock DT first, then he can proceed with his EMMC work.

### Series Overview
1. Patch 1: Fix redundant hyphen in amlogic,t7-pll-clkc DT binding
   - Based on Ronald's "[3/7] dt-bindings: clk: meson: Add Amlogic T7 fix pll support"
2. Patch 2: Add missing mpll3 parent clock definition to t7-peripherals-clkc.yaml
3. Patch 3: Add complete T7 clock controller nodes
   - Based on Ronald's initial PLL and peripheral clock nodes
   - Remove unused fixed PLL node
   - Add PCIe and HDMI PLL nodes
   - Add SCMI clock nodes for clocks handled by SCP firmware
   - Update fixed clock index in peripheral clock nodes
   - Add gp1 and mpll1 clock index in peripheral clock nodes

### Dependencies
- Patch 3 depends on Patch 2

### ABI Risk
The amlogic,t7-peripherals-clkc DT binding was merged in v7.0-rc1 [5],
but the corresponding Amlogic T7 SoC DT has not been submitted upstream
yet. Thus, no real users or systems are affected by the DT binding ABI
breakage in this series.

### Credit
- Patch 1 is based on Ronald's "[PATCH 3/7] dt-bindings: clk: meson: Add Amlogic T7 fix pll support"
- Patch 3 is based on Ronald's "[6/7] arm64: dts: amlogic: Add clock and EMMC for T7"
- Patch 1 and Patch 3 retain Ronald's Signed-off-by
- Thanks to Ronald for pointing out the gp1 pll typo and initial clock work

[1]: https://lore.kernel.org/all/20260305074328.639993-1-jian.hu@amlogic.com
[2]: https://lore.kernel.org/all/20260313070022.700437-1-jian.hu@amlogic.com/
[3]: https://lore.kernel.org/all/20260218101709.35450-1-linux-kernel-dev@aliel.fr/
[4]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/dt-bindings/clock/amlogic,t7-scmi.h
[5]: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/devicetree/bindings/clock/amlogic,t7-peripherals-clkc.yaml?h=v7.0-rc1

Jian Hu (3):
  dt-bindings: clock: amlogic: Fix redundant hyphen in
    "amlogic,t7-gp1--pll" string.
  dt-bindings: clock: amlogic: t7: Add missing mpll3 parent clock
  arm64: dts: amlogic: t7: Add clock controller nodes

 .../clock/amlogic,t7-peripherals-clkc.yaml    |  12 +-
 .../bindings/clock/amlogic,t7-pll-clkc.yaml   |   2 +-
 arch/arm64/boot/dts/amlogic/amlogic-t7.dtsi   | 125 ++++++++++++++++++
 3 files changed, 134 insertions(+), 5 deletions(-)

-- 
2.47.1

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