Pull request: u-boot-riscv/master 20200929

[uboot at andestech.com]

Hi Tom,

Please pull some riscv updates:

- Disable CMD_IRQ for RISC-V.
- Update sipeed/maix doc
- Obtain reg of SiFive RAM via dev_read_addr_index() instead of regmap API.
- Cleans up RISC-V timer drivers and converts them to DM.
- Correctly handle IPIs already pending upon prior stage bootloader (on the K210)

Thanks
Rick

https://travis-ci.org/github/rickchen36/u-boot-riscv/builds/731148651

The following changes since commit d44d46e9fafaae85b0ebbcdc53999537a199fa2f:

  Merge tag 'efi-2020-10-rc6' of https://gitlab.denx.de/u-boot/custodians/u-boot-efi (2020-09-28 08:26:49 -0400)

are available in the Git repository at:

  git at gitlab.denx.de:u-boot/custodians/u-boot-riscv.git

for you to fetch changes up to e8f0f002930955e46c2b7cc4e1e6754570a0b439:

  riscv: Add some comments to start.S (2020-09-29 09:55:22 +0800)

----------------------------------------------------------------
Bin Meng (2):
      ram: sifive: Check return value on clk_enable()
      ram: sifive: Remove regmap dependency

Heinrich Schuchardt (2):
      doc: correct kflash settings for Maix One Dock
      doc/sipeed/maix: describe RESET and BOOT button

Pragnesh Patel (1):
      cmd: irq: disable CMD_IRQ for riscv arch

Sean Anderson (16):
      riscv: Rework riscv timer driver to only support S-mode
      timer: Add helper for drivers using timebase fallback
      timer: Add a test for timer_timebase_fallback
      riscv: Rework Andes PLMT as a UCLASS_TIMER driver
      riscv: Clean up initialization in Andes PLIC
      riscv: Rework Sifive CLINT as UCLASS_TIMER driver
      riscv: clk: Add CLINT clock to kendryte clock driver
      riscv: Update Kendryte device tree for new CLINT driver
      riscv: Update SiFive device tree for new CLINT driver
      Revert "riscv: Clear pending interrupts before enabling IPIs"
      riscv: Match memory barriers between send_ipi_many and handle_ipi
      riscv: Use a valid bit to ignore already-pending IPIs
      riscv: Clear pending IPIs on initialization
      riscv: Consolidate fences into AMOs for available_harts_lock
      riscv: Ensure gp is NULL or points to valid data
      riscv: Add some comments to start.S

 arch/riscv/Kconfig                              | 16 ----------------
 arch/riscv/cpu/ax25/Kconfig                     |  2 +-
 arch/riscv/cpu/cpu.c                            | 20 ++++++++++++++++++++
 arch/riscv/cpu/fu540/Kconfig                    |  2 +-
 arch/riscv/cpu/generic/Kconfig                  |  2 +-
 arch/riscv/cpu/start.S                          | 58 +++++++++++++++++++++++++++++++++++++++++++++-------------
 arch/riscv/dts/fu540-c000-u-boot.dtsi           |  8 ++++++--
 arch/riscv/dts/hifive-unleashed-a00-u-boot.dtsi |  4 ++++
 arch/riscv/dts/k210.dtsi                        |  7 ++++---
 arch/riscv/include/asm/global_data.h            |  3 ---
 arch/riscv/include/asm/smp.h                    |  7 +++++++
 arch/riscv/include/asm/syscon.h                 |  4 ++--
 arch/riscv/lib/Makefile                         |  1 -
 arch/riscv/lib/andes_plic.c                     | 58 +++++++++++++++++++++++++---------------------------------
 arch/riscv/lib/andes_plmt.c                     | 44 +++++++++++++++++++++-----------------------
 arch/riscv/lib/interrupts.c                     |  3 ++-
 arch/riscv/lib/rdtime.c                         | 38 --------------------------------------
 arch/riscv/lib/sifive_clint.c                   | 62 ++++++++++++++++++++++++++++++++++----------------------------
 arch/riscv/lib/smp.c                            | 16 +++++++++++++++-
 arch/sandbox/dts/test.dts                       |  9 ++++++++-
 arch/sandbox/include/asm/cpu.h                  | 11 +++++++++++
 cmd/Kconfig                                     |  2 +-
 doc/board/sipeed/maix.rst                       | 10 +++++++---
 drivers/clk/kendryte/clk.c                      |  4 ++++
 drivers/cpu/cpu_sandbox.c                       | 39 ++++++++++++++++++++++++++++++++-------
 drivers/ram/sifive/fu540_ddr.c                  | 17 ++++++++---------
 drivers/timer/Kconfig                           |  4 ++--
 drivers/timer/riscv_timer.c                     | 39 ++++++++++++++++++++-------------------
 drivers/timer/sandbox_timer.c                   |  4 +++-
 drivers/timer/timer-uclass.c                    | 31 +++++++++++++++++++++++++++++++
 include/dt-bindings/clock/k210-sysctl.h         |  1 +
 include/timer.h                                 | 15 +++++++++++++++
 test/dm/timer.c                                 | 27 ++++++++++++++++++++++++++-
 33 files changed, 357 insertions(+), 211 deletions(-)
 delete mode 100644 arch/riscv/lib/rdtime.c
 create mode 100644 arch/sandbox/include/asm/cpu.h