linux-kernel - [PATCH v6 0/9] clk: bcm: kona: Add bus clock support, bus clocks for BCM21664/BCM281xx

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Message-Id: <20250813-kona-bus-clock-v6-0-f5a63d4920a4@gmail.com>
Date: Wed, 13 Aug 2025 13:00:06 +0200
From: Artur Weber <aweber.kernel@...il.com>
To: Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, 
 Florian Fainelli <florian.fainelli@...adcom.com>, 
 Ray Jui <rjui@...adcom.com>, Scott Branden <sbranden@...adcom.com>, 
 Broadcom internal kernel review list <bcm-kernel-feedback-list@...adcom.com>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: Alex Elder <elder@...nel.org>, 
 Stanislav Jakubek <stano.jakubek@...il.com>, linux-clk@...r.kernel.org, 
 linux-kernel@...r.kernel.org, devicetree@...r.kernel.org, 
 ~postmarketos/upstreaming@...ts.sr.ht, linux-arm-kernel@...ts.infradead.org, 
 Artur Weber <aweber.kernel@...il.com>, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Alex Elder <elder@...cstar.com>
Subject: [PATCH v6 0/9] clk: bcm: kona: Add bus clock support, bus clocks
 for BCM21664/BCM281xx

This patchset does the following:

- Introduce support for bus clocks. These are fairly similar to
  peripheral clocks, but only implement policy, gate and hyst.

- Add matching bus clocks for BCM21664 and BCM281xx peripheral clocks
  and update device tree bindings to match.

Signed-off-by: Artur Weber <aweber.kernel@...il.com>
---
Changes in v6:
- Rebase on v6.16
- Make kona_bus_clk_ops const, add a new commit to make kona_peri_clk_ops const as well
- Link to v5: https://lore.kernel.org/r/20250430-kona-bus-clock-v5-0-46766b28b93a@gmail.com/

Changes in v5:
- Pick up Reviewed-by trailer from Krzysztof on patch 3
- Rebase on v6.14
- No code changes since v4
- Link to v4: https://lore.kernel.org/r/20250318-kona-bus-clock-v4-0-f54416e8328f@gmail.com

Changes in v4:
- Rename moved CLOCK_COUNT defines to CLK_COUNT to avoid redefinition
- Squash BCM21664/BCM281xx bus clock DT bindings commits together
- Link to v3: https://lore.kernel.org/r/20250308-kona-bus-clock-v3-0-d6fb5bfc3b67@gmail.com

Changes in v3:
- Fix DT schema example in BCM281xx bus clock bindings
- Move CLOCK_COUNT defines from dt-bindings header to the driver
- Fix BCM21664 UARTBx_APB IDs being out of order compared to clock
  driver
- Link to v2: https://lore.kernel.org/r/20250303-kona-bus-clock-v2-0-a363c6a6b798@gmail.com

Changes in v2:
- Drop prerequisite clock patch
- Move clock/bcm21664.h dt-bindings header change to dt-bindings patch
- Add BCM281xx bus clocks
- Link to v1: https://lore.kernel.org/r/20250216-kona-bus-clock-v1-0-e8779d77a6f2@gmail.com

---
Artur Weber (9):
      clk: bcm: kona: Move CLOCK_COUNT defines into the driver
      dt-bindings: clock: brcm,kona-ccu: Drop CLOCK_COUNT defines from DT headers
      dt-bindings: clock: brcm,kona-ccu: Add BCM21664 and BCM281xx bus clocks
      clk: bcm: kona: Make kona_peri_clk_ops const
      clk: bcm: kona: Add support for bus clocks
      clk: bcm21664: Add corresponding bus clocks for peripheral clocks
      clk: bcm281xx: Add corresponding bus clocks for peripheral clocks
      ARM: dts: bcm2166x-common: Add matching bus clocks for peripheral clocks
      ARM: dts: bcm11351: Add corresponding bus clocks for peripheral clocks

 .../devicetree/bindings/clock/brcm,kona-ccu.yaml   |  49 ++++++-
 arch/arm/boot/dts/broadcom/bcm11351.dtsi           |  33 +++--
 arch/arm/boot/dts/broadcom/bcm2166x-common.dtsi    |  28 ++--
 drivers/clk/bcm/clk-bcm21664.c                     |  99 ++++++++++++++-
 drivers/clk/bcm/clk-bcm281xx.c                     | 141 ++++++++++++++++++++-
 drivers/clk/bcm/clk-kona-setup.c                   | 116 +++++++++++++++++
 drivers/clk/bcm/clk-kona.c                         |  64 +++++++++-
 drivers/clk/bcm/clk-kona.h                         |  14 +-
 include/dt-bindings/clock/bcm21664.h               |  17 ++-
 include/dt-bindings/clock/bcm281xx.h               |  24 +++-
 10 files changed, 540 insertions(+), 45 deletions(-)
---
base-commit: 038d61fd642278bab63ee8ef722c50d10ab01e8f
change-id: 20250212-kona-bus-clock-4297eefae940

Best regards,
-- 
Artur Weber <aweber.kernel@...il.com>