linux-kernel - [PATCH v12 0/6] reset: spacemit: add K1 reset support

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Message-ID: <20250702113709.291748-1-elder@riscstar.com>
Date: Wed,  2 Jul 2025 06:37:02 -0500
From: Alex Elder <elder@...cstar.com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	mturquette@...libre.com,
	sboyd@...nel.org,
	p.zabel@...gutronix.de,
	paul.walmsley@...ive.com,
	palmer@...belt.com,
	aou@...s.berkeley.edu,
	alex@...ti.fr,
	dlan@...too.org
Cc: heylenay@....org,
	inochiama@...look.com,
	guodong@...cstar.com,
	devicetree@...r.kernel.org,
	linux-clk@...r.kernel.org,
	spacemit@...ts.linux.dev,
	linux-riscv@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v12 0/6] reset: spacemit: add K1 reset support

This series adds reset controller support for the SpacemiT K1 SoC.
A SpacemiT reset controller is implemented as an auxiliary device
associated with a clock controller (CCU).  A new header file
holds definitions used by both the clock and reset drivers.

The only change in this version is that three of the the four resets
associated with each PCIe port have been renamed, to align better
with their corresponding clocks.  This affects patches 1 and 5.
For example, for PCIe port 0:

    RESET_PCIE0_DBI	(no change)
    RESET_PCIE0_SLV ->	RESET_PCIE0_SLAVE
    RESET_PCIE0_MSTR ->	RESET_PCIE0_MASTER
    RESET_PCIE0_GLB ->	RESET_PCIE0_GLOBAL (no corresponding clock)

No other code has changed since v11.

All of these patches are available here:
  https://github.com/riscstar/linux/tree/outgoing/reset-v12

					-Alex

Between version 11 and version 12:
  - Renamed PCIe resets to align with their clock counterparts

Here is version 11 of this series.
  https://lore.kernel.org/lkml/20250613011139.1201702-1-elder@riscstar.com/

Between version 10 and version 11:
  - Rebased onto Linux v6.16-rc1
  - Redefined several "multi-bit" resets as individual ones.

Here is version 10 of this series.
  https://lore.kernel.org/lkml/20250513215345.3631593-1-elder@riscstar.com/

All other history is available via that link, so I won't reproduce
it again here.

Alex Elder (6):
  dt-bindings: soc: spacemit: define spacemit,k1-ccu resets
  soc: spacemit: create a header for clock/reset registers
  clk: spacemit: set up reset auxiliary devices
  clk: spacemit: define three reset-only CCUs
  reset: spacemit: add support for SpacemiT CCU resets
  riscv: dts: spacemit: add reset support for the K1 SoC

 .../soc/spacemit/spacemit,k1-syscon.yaml      |  29 +-
 arch/riscv/boot/dts/spacemit/k1.dtsi          |  18 ++
 drivers/clk/spacemit/Kconfig                  |   1 +
 drivers/clk/spacemit/ccu-k1.c                 | 239 +++++++-------
 drivers/reset/Kconfig                         |   9 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-spacemit.c                | 304 ++++++++++++++++++
 .../dt-bindings/clock/spacemit,k1-syscon.h    | 141 ++++++++
 include/soc/spacemit/k1-syscon.h              | 160 +++++++++
 9 files changed, 775 insertions(+), 127 deletions(-)
 create mode 100644 drivers/reset/reset-spacemit.c
 create mode 100644 include/soc/spacemit/k1-syscon.h


base-commit: 19272b37aa4f83ca52bdf9c16d5d81bdd1354494
-- 
2.45.2


Alex Elder (6):
  dt-bindings: soc: spacemit: define spacemit,k1-ccu resets
  soc: spacemit: create a header for clock/reset registers
  clk: spacemit: set up reset auxiliary devices
  clk: spacemit: define three reset-only CCUs
  reset: spacemit: add support for SpacemiT CCU resets
  riscv: dts: spacemit: add reset support for the K1 SoC

 .../soc/spacemit/spacemit,k1-syscon.yaml      |  29 +-
 arch/riscv/boot/dts/spacemit/k1.dtsi          |  18 ++
 drivers/clk/spacemit/Kconfig                  |   1 +
 drivers/clk/spacemit/ccu-k1.c                 | 239 +++++++-------
 drivers/reset/Kconfig                         |   9 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-spacemit.c                | 304 ++++++++++++++++++
 .../dt-bindings/clock/spacemit,k1-syscon.h    | 141 ++++++++
 include/soc/spacemit/k1-syscon.h              | 160 +++++++++
 9 files changed, 775 insertions(+), 127 deletions(-)
 create mode 100644 drivers/reset/reset-spacemit.c
 create mode 100644 include/soc/spacemit/k1-syscon.h


base-commit: 50c8770a42faf8b1c7abe93e7c114337f580a97d
-- 
2.45.2