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clk: bcm: kona: Add bus clock support, bus clocks for BCM21664/BCM281xx

From:  Artur Weber <aweber.kernel-AT-gmail.com>
To:  Michael Turquette <mturquette-AT-baylibre.com>, Stephen Boyd <sboyd-AT-kernel.org>, Florian Fainelli <florian.fainelli-AT-broadcom.com>, Ray Jui <rjui-AT-broadcom.com>, Scott Branden <sbranden-AT-broadcom.com>, Broadcom internal kernel review list <bcm-kernel-feedback-list-AT-broadcom.com>, Rob Herring <robh-AT-kernel.org>, Krzysztof Kozlowski <krzk+dt-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>
Subject:  [PATCH v7 0/7] clk: bcm: kona: Add bus clock support, bus clocks for BCM21664/BCM281xx
Date:  Mon, 13 Oct 2025 15:41:47 +0200
Message-ID:  <20251013-kona-bus-clock-v7-0-8f473d99ae19@gmail.com>
Cc:  Alex Elder <elder-AT-kernel.org>, Stanislav Jakubek <stano.jakubek-AT-gmail.com>, linux-clk-AT-vger.kernel.org, linux-kernel-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, ~postmarketos/upstreaming-AT-lists.sr.ht, linux-arm-kernel-AT-lists.infradead.org, phone-devel-AT-vger.kernel.org, Artur Weber <aweber.kernel-AT-gmail.com>, Krzysztof Kozlowski <krzysztof.kozlowski-AT-linaro.org>, Alex Elder <elder-AT-riscstar.com>
Archive-link:  Article

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@gmail.com>
---
Changes in v7:
- Drop DTS patches to make merging into the clock tree easier. They will be re-sent
  in a subsequent patchset.
- Link to v6: https://lore.kernel.org/r/20250813-kona-bus-clock-v6-0-f5...

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-v5-0-46...

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-f5...

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-d6...

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-a3...

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-e8...

---
Artur Weber (7):
      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

 .../devicetree/bindings/clock/brcm,kona-ccu.yaml   |  49 ++++++-
 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 +++-
 8 files changed, 499 insertions(+), 25 deletions(-)
---
base-commit: 038d61fd642278bab63ee8ef722c50d10ab01e8f
change-id: 20250212-kona-bus-clock-4297eefae940

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




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