[PATCH v2 0/5] Add SIMATIC IOT2050 board support

[Jan Kiszka]

This is the baseline support for the SIMATIC IOT2050 devices.

Changes in v2:
 - rebased
 - sync with upstream-accepted DT
 - add boot switch
 - include watchdog support

Allows to boot mainline 5.10 kernels, but not the original BSP-derived
kernel we currently ship as reference. This is due to the TI sysfw ABI
breakages between 2.x and 3.x. We will soon provide a transitional
kernel that allows booting both firmware ABIs - as long as full upstream
kernel support is work in progress.

Note that this baseline support lacks Ethernet drivers. We are working
closely with TI to ensure that the to-be-upstreamed icssg-prueth driver
will work both with new SR2.0 AM65x silicon as well as with SR1.0 which
is used in the currently shipped IOT2050 devices.

A staging tree for complete IOT2050 support can be found at [1]. Full
image integration is available via [2].

Regarding patch 4: There has been some doubts on the proposed approach,
but there has been also no suggestion provided for a similarly
lightweight and secure embedding method. Therefore, I'm proposing our
solution once again.

Jan

[1] https://github.com/siemens/u-boot/commits/jan/iot2050
[2] https://github.com/siemens/meta-iot2050

Jan Kiszka (5):
  arm: dts: Add IOT2050 device tree files
  board: siemens: Add support for SIMATIC IOT2050 devices
  arm64: dts: ti: k3-am65-mcu: Add RTI watchdog entry
  watchdog: rti_wdt: Add support for loading firmware
  configs: iot2050: Enable watchdog support, but do not auto-start it

 arch/arm/dts/Makefile                         |   7 +-
 arch/arm/dts/k3-am65-iot2050-boot-image.dtsi  | 105 +++
 .../dts/k3-am65-iot2050-common-u-boot.dtsi    | 103 +++
 arch/arm/dts/k3-am65-iot2050-common.dtsi      | 655 ++++++++++++++++++
 arch/arm/dts/k3-am65-iot2050-spl.dts          |  16 +
 arch/arm/dts/k3-am65-mcu.dtsi                 |   9 +
 arch/arm/dts/k3-am6528-iot2050-basic.dts      |  67 ++
 arch/arm/dts/k3-am6548-iot2050-advanced.dts   |  66 ++
 arch/arm/mach-k3/Kconfig                      |   1 +
 board/siemens/iot2050/Kconfig                 |  32 +
 board/siemens/iot2050/MAINTAINERS             |   8 +
 board/siemens/iot2050/Makefile                |  10 +
 board/siemens/iot2050/README                  |  65 ++
 board/siemens/iot2050/board.c                 | 278 ++++++++
 board/siemens/iot2050/config.mk               |   8 +
 configs/iot2050_defconfig                     | 146 ++++
 drivers/watchdog/Kconfig                      |  20 +
 drivers/watchdog/Makefile                     |   5 +
 drivers/watchdog/rti_wdt.c                    |  58 +-
 drivers/watchdog/rti_wdt_fw.S                 |  20 +
 include/configs/iot2050.h                     |  60 ++
 21 files changed, 1737 insertions(+), 2 deletions(-)
 create mode 100644 arch/arm/dts/k3-am65-iot2050-boot-image.dtsi
 create mode 100644 arch/arm/dts/k3-am65-iot2050-common-u-boot.dtsi
 create mode 100644 arch/arm/dts/k3-am65-iot2050-common.dtsi
 create mode 100644 arch/arm/dts/k3-am65-iot2050-spl.dts
 create mode 100644 arch/arm/dts/k3-am6528-iot2050-basic.dts
 create mode 100644 arch/arm/dts/k3-am6548-iot2050-advanced.dts
 create mode 100644 board/siemens/iot2050/Kconfig
 create mode 100644 board/siemens/iot2050/MAINTAINERS
 create mode 100644 board/siemens/iot2050/Makefile
 create mode 100644 board/siemens/iot2050/README
 create mode 100644 board/siemens/iot2050/board.c
 create mode 100644 board/siemens/iot2050/config.mk
 create mode 100644 configs/iot2050_defconfig
 create mode 100644 drivers/watchdog/rti_wdt_fw.S
 create mode 100644 include/configs/iot2050.h

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2.26.2