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* [PATCH v6 00/18] Support spread spectrum clocking for i.MX8N PLLs
@ 2024-12-22 17:04 Dario Binacchi
  2024-12-22 17:04 ` [PATCH v6 01/18] dt-bindings: clock: imx8mm: add VIDEO_PLL clocks Dario Binacchi
                   ` (17 more replies)
  0 siblings, 18 replies; 28+ messages in thread
From: Dario Binacchi @ 2024-12-22 17:04 UTC (permalink / raw)
  To: linux-kernel
  Cc: linux-amarula, Dario Binacchi, Abel Vesa, Conor Dooley,
	Fabio Estevam, Krzysztof Kozlowski, Michael Turquette, Peng Fan,
	Pengutronix Kernel Team, Rob Herring, Sascha Hauer, Shawn Guo,
	Stephen Boyd, devicetree, imx, linux-arm-kernel, linux-clk

The series adds support for spread spectrum clocking for i.MX8MN
PLLs (audio, video and DRAM). It has been tested for the video PLL on
a board using i.MX8MN.

The patches added in version 4, such as the dt-bindings and the driver
for anatop, were inspired by the extensive email exchange from version 3:
https://lore.kernel.org/imx/20241106090549.3684963-1-dario.binacchi@amarulasolutions.com/

The series added spectrum spread support for the imx8mn platform only,
but in case it was merged, confirming that the directives and suggestions
made by the maintainers were correctly understood and implemented, I will
extend this support to the imx8mm and imx8mp platforms as well.

Changes in v6:
- Merge patches:
  10/20 dt-bindings: clock: imx8mm: add binding definitions for anatop
  11/20 dt-bindings: clock: imx8mn: add binding definitions for anatop
  12/20 dt-bindings: clock: imx8mp: add binding definitions for anatop
  to
  05/20 dt-bindings: clock: imx8m-anatop: define clocks/clock-names
  now renamed
  05/18 dt-bindings: clock: imx8m-anatop: add oscillators and PLLs
- Split the patch
  15/20 dt-bindings-clock-imx8m-clock-support-spread-spectru.patch
  into
  12/18 dt-bindings: clock: imx8m-clock: add PLLs
  16/18 dt-bindings: clock: imx8m-clock: support spread spectrum clocking

Changes in v5:
- Fix compilation errors.
- Separate driver code from dt-bindings

Changes in v4:
- Add dt-bindings for anatop
- Add anatop driver
- Drop fsl,ssc-clocks from spread spectrum dt-bindings

Changes in v3:
- Patches 1/8 has been added in version 3. The dt-bindings have
  been moved from fsl,imx8m-anatop.yaml to imx8m-clock.yaml. The
  anatop device (fsl,imx8m-anatop.yaml) is indeed more or less a
  syscon, so it represents a memory area accessible by ccm
  (imx8m-clock.yaml) to setup the PLLs.
- Patches {3,5}/8 have been added in version 3.
- Patches {4,6,8}/8 use ccm device node instead of the anatop one.

Changes in v2:
- Add "allOf:" and place it after "required:" block, like in the
  example schema.
- Move the properties definition to the top-level.
- Drop unit types as requested by the "make dt_binding_check" command.

Dario Binacchi (18):
  dt-bindings: clock: imx8mm: add VIDEO_PLL clocks
  clk: imx8mm: rename video_pll1 to video_pll
  dt-bindings: clock: imx8mp: add VIDEO_PLL clocks
  clk: imx8mp: rename video_pll1 to video_pll
  dt-bindings: clock: imx8m-anatop: add oscillators and PLLs
  arm64: dts: imx8mm: add anatop clocks
  arm64: dts: imx8mn: add anatop clocks
  arm64: dts: imx8mp: add anatop clocks
  arm64: dts: imx8mq: add anatop clocks
  clk: imx: add hw API imx8m_anatop_get_clk_hw
  clk: imx: add support for i.MX8MN anatop clock driver
  dt-bindings: clock: imx8m-clock: add PLLs
  arm64: dts: imx8mm: add PLLs to clock controller module (ccm)
  arm64: dts: imx8mn: add PLLs to clock controller module (ccm)
  arm64: dts: imx8mp: add PLLs to clock controller module (ccm)
  dt-bindings: clock: imx8m-clock: support spread spectrum clocking
  clk: imx: pll14xx: support spread spectrum clock generation
  clk: imx8mn: support spread spectrum clock generation

 .../bindings/clock/fsl,imx8m-anatop.yaml      |  53 +++-
 .../bindings/clock/imx8m-clock.yaml           |  65 +++-
 arch/arm64/boot/dts/freescale/imx8mm.dtsi     |  11 +-
 arch/arm64/boot/dts/freescale/imx8mn.dtsi     |  11 +-
 arch/arm64/boot/dts/freescale/imx8mp.dtsi     |  11 +-
 arch/arm64/boot/dts/freescale/imx8mq.dtsi     |   2 +
 drivers/clk/imx/Makefile                      |   2 +-
 drivers/clk/imx/clk-imx8mm.c                  | 102 +++----
 drivers/clk/imx/clk-imx8mn-anatop.c           | 283 ++++++++++++++++++
 drivers/clk/imx/clk-imx8mn.c                  | 188 ++++++------
 drivers/clk/imx/clk-imx8mp.c                  | 118 ++++----
 drivers/clk/imx/clk-pll14xx.c                 | 134 +++++++++
 drivers/clk/imx/clk.c                         |  28 ++
 drivers/clk/imx/clk.h                         |  23 ++
 include/dt-bindings/clock/imx8mm-clock.h      |  76 ++++-
 include/dt-bindings/clock/imx8mn-clock.h      |  64 ++++
 include/dt-bindings/clock/imx8mp-clock.h      |  80 ++++-
 17 files changed, 1017 insertions(+), 234 deletions(-)
 create mode 100644 drivers/clk/imx/clk-imx8mn-anatop.c

-- 
2.43.0



^ permalink raw reply	[flat|nested] 28+ messages in thread

end of thread, other threads:[~2024-12-25  1:01 UTC | newest]

Thread overview: 28+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-12-22 17:04 [PATCH v6 00/18] Support spread spectrum clocking for i.MX8N PLLs Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 01/18] dt-bindings: clock: imx8mm: add VIDEO_PLL clocks Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 02/18] clk: imx8mm: rename video_pll1 to video_pll Dario Binacchi
2024-12-24  3:17   ` Peng Fan
2024-12-22 17:04 ` [PATCH v6 03/18] dt-bindings: clock: imx8mp: add VIDEO_PLL clocks Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 04/18] clk: imx8mp: rename video_pll1 to video_pll Dario Binacchi
2024-12-24  3:18   ` Peng Fan
2024-12-22 17:04 ` [PATCH v6 05/18] dt-bindings: clock: imx8m-anatop: add oscillators and PLLs Dario Binacchi
2024-12-23 15:06   ` Krzysztof Kozlowski
2024-12-22 17:04 ` [PATCH v6 06/18] arm64: dts: imx8mm: add anatop clocks Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 07/18] arm64: dts: imx8mn: " Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 08/18] arm64: dts: imx8mp: " Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 09/18] arm64: dts: imx8mq: " Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 10/18] clk: imx: add hw API imx8m_anatop_get_clk_hw Dario Binacchi
2024-12-24  3:22   ` Peng Fan
2024-12-24 12:18     ` Dario Binacchi
2024-12-25  0:59       ` Peng Fan
2024-12-22 17:04 ` [PATCH v6 11/18] clk: imx: add support for i.MX8MN anatop clock driver Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 12/18] dt-bindings: clock: imx8m-clock: add PLLs Dario Binacchi
2024-12-23 15:06   ` Krzysztof Kozlowski
2024-12-22 17:04 ` [PATCH v6 13/18] arm64: dts: imx8mm: add PLLs to clock controller module (ccm) Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 14/18] arm64: dts: imx8mn: " Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 15/18] arm64: dts: imx8mp: " Dario Binacchi
2024-12-22 17:04 ` [PATCH v6 16/18] dt-bindings: clock: imx8m-clock: support spread spectrum clocking Dario Binacchi
2024-12-23 15:05   ` Krzysztof Kozlowski
2024-12-22 17:04 ` [PATCH v6 17/18] clk: imx: pll14xx: support spread spectrum clock generation Dario Binacchi
2024-12-24  3:32   ` Peng Fan
2024-12-22 17:04 ` [PATCH v6 18/18] clk: imx8mn: " Dario Binacchi

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