[00/14] Initial support for Nuvoton WPCM450 BMC SoC

Message

J. Neuschäfer March 20, 2021, 6:15 p.m. UTC

This series adds basic support for the Nuvoton WPCM450 BMC SoC. It's an older
SoC but still commonly found on eBay, mostly in Supermicro X9 server boards.

Patches 1-6 add devicetree bindings for the WPCM450 SoC and its various parts.
Patches 7-11 add arch and driver support. Patches 12 and 13 add a devicetree
for the SoC and a board based on it. Patch 14 finally updates the MAINTAINERS
file.

Patch 2 requires "dt-bindings: arm: Convert nuvoton,npcm750 binding to YAML"
(https://lore.kernel.org/lkml/[e-mail]/)

This series is based on 5.12-rc2, and doesn't cleanly apply to OpenBMC's dev-5.10
branch (there are some trivial merge conflicts).

Jonathan Neuschäfer (14):
  dt-bindings: vendor-prefixes: Add Supermicro
  dt-bindings: arm: npcm: Add nuvoton,wpcm450 compatible string
  dt-bindings: interrupt-controller: Add nuvoton,wpcm450-aic
  dt-bindings: serial: 8250: Add nuvoton,wpcm450-uart
  dt-bindings: timer: nuvoton,npcm7xx: Add wpcm450-timer
  dt-bindings: watchdog: npcm: Add nuvoton,wpcm450-wdt
  ARM: npcm: Introduce Nuvoton WPCM450 SoC
  irqchip: Add driver for WPCM450 interrupt controller
  serial: 8250_of: Add nuvoton,wpcm450-uart
  clocksource/drivers/npcm: Add support for WPCM450
  watchdog: npcm: Add support for WPCM450
  ARM: dts: Add devicetree for Nuvoton WPCM450 BMC chip
  ARM: dts: Add devicetree for Supermicro X9SCi-LN4F based on WPCM450
  MAINTAINERS: Nuvoton NPCM: Add wpcm patterns

 .../devicetree/bindings/arm/npcm/npcm.yaml    |   6 +
 .../nuvoton,wpcm450-aic.yaml                  |  39 +++++
 .../devicetree/bindings/serial/8250.yaml      |   1 +
 .../bindings/timer/nuvoton,npcm7xx-timer.txt  |   3 +-
 .../devicetree/bindings/vendor-prefixes.yaml  |   2 +
 .../bindings/watchdog/nuvoton,npcm-wdt.txt    |   3 +-
 MAINTAINERS                                   |  11 +-
 arch/arm/boot/dts/Makefile                    |   2 +
 .../nuvoton-wpcm450-supermicro-x9sci-ln4f.dts |  40 +++++
 arch/arm/boot/dts/nuvoton-wpcm450.dtsi        |  76 ++++++++
 arch/arm/mach-npcm/Kconfig                    |  13 +-
 arch/arm/mach-npcm/Makefile                   |   1 +
 arch/arm/mach-npcm/wpcm450.c                  |  13 ++
 drivers/clocksource/timer-npcm7xx.c           |   1 +
 drivers/irqchip/Kconfig                       |   6 +
 drivers/irqchip/Makefile                      |   1 +
 drivers/irqchip/irq-wpcm450-aic.c             | 162 ++++++++++++++++++
 drivers/tty/serial/8250/8250_of.c             |   1 +
 drivers/watchdog/npcm_wdt.c                   |   1 +
 19 files changed, 374 insertions(+), 8 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/interrupt-controller/nuvoton,wpcm450-aic.yaml
 create mode 100644 arch/arm/boot/dts/nuvoton-wpcm450-supermicro-x9sci-ln4f.dts
 create mode 100644 arch/arm/boot/dts/nuvoton-wpcm450.dtsi
 create mode 100644 arch/arm/mach-npcm/wpcm450.c
 create mode 100644 drivers/irqchip/irq-wpcm450-aic.c

--
2.30.2

Comments

J. Neuschäfer March 20, 2021, 6:47 p.m. UTC | #1

On Sat, Mar 20, 2021 at 07:15:56PM +0100, Jonathan Neuschäfer wrote:
> This series adds basic support for the Nuvoton WPCM450 BMC SoC. It's an older
> SoC but still commonly found on eBay, mostly in Supermicro X9 server boards.

Something I forgot to mention: I wrote a bit of third-party
documentation based on the various vendor kernel trees and it's
available at:

  https://github.com/neuschaefer/wpcm450/wiki



Best regards,
Jonathan Neuschäfer

J. Neuschäfer March 21, 2021, 12:31 p.m. UTC | #2

On Sun, Mar 21, 2021 at 01:07:53PM +0200, Tomer Maimon wrote:
> Hi Jonathan,
> 
> Thanks a lot for trying to add WPCM450.
> 
> Hoever WPCM450 is in EOL for several years and we are not supporting this
> product anymore.
> As you said it is only available in the secondary market.
> 
> Due to it is better not to add the WPCM450 under Nuvoton maintenance.

I understand. I will instead add a new, separate section for WPCM450 to
the MAINTAINERS file.

> Again we highly appreciate your support and time on NPCM750 patches.

I expect there will be some more cooperation, because the SoCs share
some architectural similarity, for example the 100Mbit Ethernet
controller.


Best regards,
Jonathan