[PATCH v3 00/15] arm64 / clk: socfpga: simplifying, cleanups and compile testing

[Krzysztof Kozlowski]

Hi,

All three Intel arm64 SoCFPGA architectures (Agilex, N5X and Stratix 10)
are basically flavors/platforms of the same architecture.  At least from
the Linux point of view.  Up to a point that N5X and Agilex share DTSI.
Having three top-level architectures for the same one barely makes
sense and complicates driver selection.

Additionally it was pointed out that ARCH_SOCFPGA name is too generic.
There are other vendors making SoC+FPGA designs, so the name should be
changed to have real vendor (currently: Intel).


Dependencies / merging
======================
1. Patch 1 is used as base, so other changes depend on its hunks.
   I put it at beginning as it is something close to a fix, so candidate
   for stable (even though I did not mark it like that).
2. Patch 2: everything depends on it.

3. 64-bit path:
3a. Patches 3-7: depend on patch 2, from 64-bit point of view.
3b. Patch 8: depends on 2-7 as it finally removes 64-bit ARCH_XXX
    symbols.

4. 32-bit path:
4a. Patches 9-14: depend on 2, from 32-bit point of view.
4b. Patch 15: depends on 9-14 as it finally removes 32-bit ARCH_SOCFPGA
    symbol.

If the patches look good, proposed merging is via SoC tree (after
getting acks from everyone). Sharing immutable branches is also a way.


Changes since v2
================
1. Several new patches and changes.
2. Rename ARCH_SOCFPGA to ARCH_INTEL_SOCFPGA on 32-bit and 64-bit.
3. Enable compile testing of 32-bit socfpga clock drivers.
4. Split changes per subsystems for easier review.
5. I already received an ack from Lee Jones, but I did not add it as
   there was big refactoring.  Please kindly ack one more time if it
   looks good.

Changes since v1
================
1. New patch 3: arm64: socfpga: rename ARCH_STRATIX10 to ARCH_SOCFPGA64.
2. New patch 4: arm64: intel: merge Agilex and N5X into ARCH_SOCFPGA64.
3. Fix build is.sue reported by kernel test robot (with ARCH_STRATIX10
   and COMPILE_TEST but without selecting some of the clocks).


RFT
===
I tested compile builds on few configurations, so I hope kbuild 0-day
will check more options (please give it few days on the lists).
I compare the generated autoconf.h and found no issues.  Testing on real
hardware would be appreciated.

Best regards,
Krzysztof

Krzysztof Kozlowski (15):
  clk: socfpga: allow building N5X clocks with ARCH_N5X
  ARM: socfpga: introduce common ARCH_INTEL_SOCFPGA
  mfd: altera: merge ARCH_SOCFPGA and ARCH_STRATIX10
  net: stmmac: merge ARCH_SOCFPGA and ARCH_STRATIX10
  clk: socfpga: build together Stratix 10, Agilex and N5X clock drivers
  clk: socfpga: merge ARCH_SOCFPGA and ARCH_STRATIX10
  EDAC: altera: merge ARCH_SOCFPGA and ARCH_STRATIX10
  arm64: socfpga: merge Agilex and N5X into ARCH_INTEL_SOCFPGA
  clk: socfpga: allow compile testing of Stratix 10 / Agilex clocks
  clk: socfpga: use ARCH_INTEL_SOCFPGA also for 32-bit ARM SoCs (and
    compile test)
  dmaengine: socfpga: use ARCH_INTEL_SOCFPGA also for 32-bit ARM SoCs
  fpga: altera: use ARCH_INTEL_SOCFPGA also for 32-bit ARM SoCs
  i2c: altera: use ARCH_INTEL_SOCFPGA also for 32-bit ARM SoCs
  reset: socfpga: use ARCH_INTEL_SOCFPGA also for 32-bit ARM SoCs
  ARM: socfpga: drop ARCH_SOCFPGA

 arch/arm/Kconfig                            |  2 +-
 arch/arm/Kconfig.debug                      |  6 +++---
 arch/arm/Makefile                           |  2 +-
 arch/arm/boot/dts/Makefile                  |  2 +-
 arch/arm/configs/multi_v7_defconfig         |  2 +-
 arch/arm/configs/socfpga_defconfig          |  2 +-
 arch/arm/mach-socfpga/Kconfig               |  4 ++--
 arch/arm64/Kconfig.platforms                | 17 ++++-------------
 arch/arm64/boot/dts/altera/Makefile         |  2 +-
 arch/arm64/boot/dts/intel/Makefile          |  6 +++---
 arch/arm64/configs/defconfig                |  3 +--
 drivers/clk/Kconfig                         |  1 +
 drivers/clk/Makefile                        |  4 +---
 drivers/clk/socfpga/Kconfig                 | 19 +++++++++++++++++++
 drivers/clk/socfpga/Makefile                | 11 +++++------
 drivers/dma/Kconfig                         |  2 +-
 drivers/edac/Kconfig                        |  2 +-
 drivers/edac/altera_edac.c                  | 17 +++++++++++------
 drivers/firmware/Kconfig                    |  2 +-
 drivers/fpga/Kconfig                        |  8 ++++----
 drivers/i2c/busses/Kconfig                  |  2 +-
 drivers/mfd/Kconfig                         |  4 ++--
 drivers/net/ethernet/stmicro/stmmac/Kconfig |  4 ++--
 drivers/reset/Kconfig                       |  6 +++---
 24 files changed, 71 insertions(+), 59 deletions(-)
 create mode 100644 drivers/clk/socfpga/Kconfig

-- 
2.25.1