[U-Boot] [PATCH v2 00/15] Expand Aspeed AST2500 Support

[Maxim Sloyko <maxims@google.com>]

This series expands support for Aspeed AST2500 SoC, commonly used as
Board Management Controller in many servers.

The main goal of this series is I2C driver, the rest are
either cleanups or supporting patches. Most notable among them is
addition of Watchdog uclass, so that watchdog drivers can now use Driver
Model.

One notable thing that is *missing* from this series is Device Tree
configuration for I2C driver. The Linux Kernel I2C driver is still under
review and it may affect the details of how devices need to be
configured in the Device Tree. So, I decided to wait until it will show
up in Linux Kernel DT and then pull it into U-Boot.

I removed Network driver from this series. I will work on it separately
and will make it compatible with existing Faraday devices, but that is a
work better done outside of this already long series.

Also, sorry for taking long time to respond, I had to take care of some
more pressing, non-U-Boot-related issues.
I can assure you that I'm still committed to continue to work on Aspeed
in U-Boot.

Changes in v2:
- Remove "probe" function from sandbox wdt driver
- Fix include order

Changes in v1:
- Added link to the original version to commit message
- Rename wdt_reset to wdt_expire_now
- Rename wdt_restart to wdt_reset
- Clarified function documentation in few cases
- Add Sandbox WDT driver and unit tests
- Rename reset to expire_now
- Rename restart to reset
- Remove unnecessary check for error in dev_get_priv
- Fix comment
- Rename wdt_reset call to wdt_expire_now
- Rename wdt_reset call to wdt_expire_now
- Style fixes

Maxim Sloyko (15):
  aspeed: Update ast2500 Device Tree
  dm: Simple Watchdog uclass
  aspeed: Watchdog Timer Driver
  aspeed: Make SCU lock/unlock functions part of SCU API
  aspeed: Reset Driver
  aspeed: Device Tree configuration for Reset Driver
  aspeed: Refactor AST2500 RAM Driver and Sysreset Driver
  aspeed: AST2500 Pinctrl Driver
  aspeed: Enable Pinctrl Driver in AST2500 EVB
  aspeed: Add P-Bus clock in ast2500 clock driver
  aspeed: Add I2C Driver
  aspeed: Enable I2C in EVB defconfig
  aspeed: Add support for Clocks needed by MACs
  aspeed: Refactor SCU to use consistent mask & shift
  aspeed: Cleanup ast2500-u-boot.dtsi Device Tree

 arch/arm/dts/ast2500-evb.dts                   |  15 +
 arch/arm/dts/ast2500-u-boot.dtsi               |  59 +-
 arch/arm/dts/ast2500.dtsi                      | 881 ++++++++++++++++++++++++-
 arch/arm/include/asm/arch-aspeed/pinctrl.h     |  52 ++
 arch/arm/include/asm/arch-aspeed/scu_ast2500.h | 132 +++-
 arch/arm/include/asm/arch-aspeed/wdt.h         |  38 +-
 arch/arm/mach-aspeed/Kconfig                   |   8 +-
 arch/arm/mach-aspeed/ast2500/clk_ast2500.c     |  15 +
 arch/arm/mach-aspeed/ast2500/sdram_ast2500.c   |  17 +-
 arch/arm/mach-aspeed/ast_wdt.c                 |  47 +-
 arch/sandbox/dts/test.dts                      |   4 +
 arch/sandbox/include/asm/state.h               |   9 +
 configs/evb-ast2500_defconfig                  |   6 +
 configs/sandbox_defconfig                      |   2 +
 drivers/clk/aspeed/clk_ast2500.c               | 321 +++++++--
 drivers/i2c/Kconfig                            |   9 +
 drivers/i2c/Makefile                           |   1 +
 drivers/i2c/ast_i2c.c                          | 357 ++++++++++
 drivers/i2c/ast_i2c.h                          | 132 ++++
 drivers/pinctrl/Kconfig                        |   9 +
 drivers/pinctrl/Makefile                       |   1 +
 drivers/pinctrl/aspeed/Makefile                |   1 +
 drivers/pinctrl/aspeed/pinctrl_ast2500.c       | 127 ++++
 drivers/reset/Kconfig                          |  10 +
 drivers/reset/Makefile                         |   1 +
 drivers/reset/ast2500-reset.c                  | 106 +++
 drivers/sysreset/sysreset_ast.c                |  24 +-
 drivers/watchdog/Kconfig                       |  32 +
 drivers/watchdog/Makefile                      |   3 +
 drivers/watchdog/ast_wdt.c                     | 125 ++++
 drivers/watchdog/sandbox_wdt.c                 |  66 ++
 drivers/watchdog/wdt-uclass.c                  |  72 ++
 include/dm/uclass-id.h                         |   1 +
 include/dt-bindings/clock/ast2500-scu.h        |   2 +
 include/dt-bindings/reset/ast2500-reset.h      |  45 ++
 include/wdt.h                                  | 107 +++
 test/dm/Makefile                               |   1 +
 test/dm/wdt.c                                  |  40 ++
 38 files changed, 2711 insertions(+), 167 deletions(-)
 create mode 100644 arch/arm/include/asm/arch-aspeed/pinctrl.h
 create mode 100644 drivers/i2c/ast_i2c.c
 create mode 100644 drivers/i2c/ast_i2c.h
 create mode 100644 drivers/pinctrl/aspeed/Makefile
 create mode 100644 drivers/pinctrl/aspeed/pinctrl_ast2500.c
 create mode 100644 drivers/reset/ast2500-reset.c
 create mode 100644 drivers/watchdog/ast_wdt.c
 create mode 100644 drivers/watchdog/sandbox_wdt.c
 create mode 100644 drivers/watchdog/wdt-uclass.c
 create mode 100644 include/dt-bindings/reset/ast2500-reset.h
 create mode 100644 include/wdt.h
 create mode 100644 test/dm/wdt.c

-- 
2.13.0.rc1.294.g07d810a77f-goog