linux-kernel - [PATCH v4 0/5] Add CMN PLL clock controller support for IPQ5018

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Message-Id: <20250516-ipq5018-cmn-pll-v4-0-389a6b30e504@outlook.com>
Date: Fri, 16 May 2025 16:36:07 +0400
From: George Moussalem via B4 Relay <devnull+george.moussalem.outlook.com@...nel.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Luo Jie <quic_luoj@...cinc.com>, 
 Lee Jones <lee@...nel.org>, Konrad Dybcio <konradybcio@...nel.org>, 
 Arnd Bergmann <arnd@...db.de>
Cc: linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 George Moussalem <george.moussalem@...look.com>, 
 Konrad Dybcio <konrad.dybcio@....qualcomm.com>
Subject: [PATCH v4 0/5] Add CMN PLL clock controller support for IPQ5018

The CMN PLL block of IPQ5018 supplies output clocks for XO at 24 MHZ,
sleep at 32KHZ, and the ethernet block at 50MHZ.

This patch series extends the CMN PLL driver to support IPQ5018. It also
adds the SoC specific header file to export the CMN PLL output clock
specifiers for IPQ5018. A new table of output clocks is added for the
CMN PLL of IPQ5018, which is acquired from the device according to the
compatible.

Signed-off-by: George Moussalem <george.moussalem@...look.com>
---
Changes in v4:
- Re-add missing CMN PLL node after git pull and rebase on linux-next
- Link to v3: https://lore.kernel.org/r/20250516-ipq5018-cmn-pll-v3-0-f3867c5a2076@outlook.com

Changes in v3:
- After further testing and evaluating different solutions, reverted to
  marking the XO clock in the GCC as critical as agreed with Konrad
- Moved kernel traces out of commit message of patch 1 to under the
  diffstat separator and updated commit message accordingly
- Updated commit message of patch 3
- Link to v2: https://lore.kernel.org/r/20250506-ipq5018-cmn-pll-v2-0-c0a9fcced114@outlook.com

Changes in v2:
- Moved up commit documenting ipq5018 in qcom,tcsr bindings
- Fixed binding issues reported by Rob's bot
- Undone accidental deletion of reg property in cmn pll bindings
- Fixed register address and size based on address and size cells of 1
- Removed XO and XO_SRC clock structs from GCC and enabled them as
  always-on as suggested by Konrad
- Removed bindings for XO and XO_SRC clocks
- Removed qcom,tscr-cmn-pll-eth-enable property from bindings and will 
  move logic to ipq5018 internal phy driver as per Jie's recommendation.
- Removed addition of tcsr node and its bindings from this patch set
- Corrected spelling mistakes
- Link to v1: https://lore.kernel.org/r/20250502-ipq5018-cmn-pll-v1-0-27902c1c4071@outlook.com

---
George Moussalem (5):
      clk: qcom: ipq5018: keep XO clock always on
      dt-bindings: clock: qcom: Add CMN PLL support for IPQ5018 SoC
      clk: qcom: ipq-cmn-pll: Add IPQ5018 SoC support
      arm64: dts: ipq5018: Add CMN PLL node
      arm64: dts: qcom: Update IPQ5018 xo_board_clk to use fixed factor clock

 .../bindings/clock/qcom,ipq9574-cmn-pll.yaml       |  1 +
 arch/arm64/boot/dts/qcom/ipq5018-rdp432-c2.dts     |  3 +-
 .../dts/qcom/ipq5018-tplink-archer-ax55-v1.dts     |  3 +-
 arch/arm64/boot/dts/qcom/ipq5018.dtsi              | 34 ++++++++++++++++++--
 drivers/clk/qcom/gcc-ipq5018.c                     |  2 +-
 drivers/clk/qcom/ipq-cmn-pll.c                     | 37 ++++++++++++++--------
 include/dt-bindings/clock/qcom,ipq5018-cmn-pll.h   | 16 ++++++++++
 7 files changed, 77 insertions(+), 19 deletions(-)
---
base-commit: 8a2d53ce3c5f82683ad3df9a9a55822816fe64e7
change-id: 20250501-ipq5018-cmn-pll-8e517de873f8
prerequisite-change-id: 20250411-qcom_ipq5424_cmnpll-960a8f597033:v2
prerequisite-patch-id: dc3949e10baf58f8c28d24bb3ffd347a78a1a2ee
prerequisite-patch-id: da645619780de3186a3cccf25beedd4fefab36df
prerequisite-patch-id: 4b5d81954f1f43d450a775bcabc1a18429933aaa
prerequisite-patch-id: 541f835fb279f83e6eb2405c531bd7da9aacf4bd

Best regards,
-- 
George Moussalem <george.moussalem@...look.com>