From mboxrd@z Thu Jan  1 00:00:00 1970
From: Sean Anderson <seanga2@gmail.com>
Date: Wed, 22 Apr 2020 22:32:59 -0400
Subject: [PATCH v9 00/21] riscv: Add Sipeed Maix support
Message-ID: <20200423023320.1380090-1-seanga2@gmail.com>
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To: u-boot@lists.denx.de

This patch series adds support for Sipeed Maix boards and the Kendryte
K210 CPU. Currently, only the Maix Bit V2.0 is supported, however other
models are similar.

Known Bugs/Limitations:
- Accessing the AI ram hangs, limiting available ram to 6M
- Trying to boot an image with bootm fails with
  ERROR: Failed to allocate 0x7d60 bytes below 0x80000000.

To flash u-boot to a maix bit, run
kflash -tp /dev/<your tty here> -B bit_mic u-boot-dtb.bin

Boot output should look like the following:

U-Boot 2020.04-rc2-00087-g2221cc09c1-dirty (Feb 28 2020 - 13:53:09 -0500)

DRAM:  8 MiB
In:    serial at 38000000
Out:   serial at 38000000
Err:   serial at 38000000
=>

Changes for v9:
- Fix error in Andes PLIC
- Update MAINTAINERS
- Mark dts blocks in documentation as "none" highlighting

Changes for v8:
- Removed dependency on the patch "clk: Add functions to register CCF clock
  structs". Hopefully this will make reviewing easier.

Changes for v7:
- Split documentation from other board support
- Split IPI clear from other IPI cleanup
- Rebased onto a clean upstream. Hopefully this fixes any patching
  problems.

Changes for v6:
- Remove spi, pinmux, gpio, led, and wdt support --- to be added in separate
  patches
- Rebase onto master
- Clear IPIs before enabling them
- Reorganize code so checkpatch errors less

Changes for v5:
- Rebase onto master
- Add pinconf support
- Add gpio support
- Store environment in spi flash
- Group patches by prefix
- Add additional documentation
- Add SMP support
- Add WDT support

Changes for v4:
- Linted several patches
- Updated the copyright year for several files
- Added tests for syscon-reset, simple-pm-bus, and the pll calc_rate function
- Added/updated documentation
- Fixed SPI for the nor flash
- Fixed PLLs not enabling/setting rate properly
- RISCV_PRIV_1_9_1 now (un)defines all diferring CSRs, and also disables VM
- More devicetree changes

Changes for v3:
- Remove patch to set RV64I as default
- Remove patch for a separate sysctl driver
- Split off cpu frequency patch into its own series
- Reorder support/devicetree patches to come last
- Add patch for reset driver
- Add simple-pm-bus for busses with their own clocks
- Add additional documentation
- Reword mcounteren patch to refer to the RISC-V priv spec 1.9.1
- Many devicetree changes
- Switch to "make savedefconfig" to generate the config

Changes for v2:
- Many bugfixes for the device tree
- Modify the config to build without errors
- Add support for keeping internal PLL frequencies in-range
- Fix several rebase-induced artifacts

Sean Anderson (21):
  clk: Always use the supplied struct clk
  clk: Check that ops of composite clock components exist before calling
  clk: Unconditionally recursively en-/dis-able clocks
  clk: Fix clk_get_by_* handling of index
  clk: Add K210 pll support
  clk: Add a bypass clock for K210
  clk: Add K210 clock support
  dm: Add support for simple-pm-bus
  dm: Fix error handling for dev_read_addr_ptr
  reset: Add generic reset driver
  lib: Always set errno in hcreate_r
  riscv: Add headers for asm/global_data.h
  riscv: Clear pending interrupts before enabling IPIs
  riscv: Clean up IPI initialization code
  riscv: Add option to support RISC-V privileged spec 1.9
  riscv: Allow use of reset drivers
  riscv: Try to get cpu frequency from a "clocks" node if it exists
  riscv: Enable cpu clock if it is present
  riscv: Add device tree for K210 and Sipeed Maix BitM
  doc: riscv: Add documentation for Sipeed Maix Bit
  riscv: Add Sipeed Maix support

 MAINTAINERS                                   |   7 +
 arch/riscv/Kconfig                            |  14 +
 arch/riscv/cpu/cpu.c                          |  15 +
 arch/riscv/cpu/start.S                        |   2 +
 arch/riscv/dts/Makefile                       |   1 +
 arch/riscv/dts/k210-maix-bit.dts              |  47 ++
 arch/riscv/dts/k210.dtsi                      | 594 ++++++++++++++++
 arch/riscv/include/asm/csr.h                  |  40 ++
 arch/riscv/include/asm/global_data.h          |   2 +
 arch/riscv/include/asm/smp.h                  |  43 ++
 arch/riscv/lib/andes_plic.c                   |  34 +-
 arch/riscv/lib/reset.c                        |   2 +
 arch/riscv/lib/sbi_ipi.c                      |   5 +
 arch/riscv/lib/sifive_clint.c                 |  33 +-
 arch/riscv/lib/smp.c                          |  56 +-
 arch/sandbox/dts/test.dts                     |  21 +
 arch/sandbox/include/asm/clk.h                |   1 +
 board/sipeed/maix/Kconfig                     |  47 ++
 board/sipeed/maix/MAINTAINERS                 |  11 +
 board/sipeed/maix/Makefile                    |   5 +
 board/sipeed/maix/maix.c                      |  41 ++
 configs/sandbox_defconfig                     |   3 +
 configs/sipeed_maix_bitm_defconfig            |   8 +
 doc/board/index.rst                           |   1 +
 doc/board/sipeed/index.rst                    |   9 +
 doc/board/sipeed/maix.rst                     | 298 ++++++++
 .../bus/simple-pm-bus.txt                     |  44 ++
 .../mfd/kendryte,k210-sysctl.txt              |  33 +
 .../reset/syscon-reset.txt                    |  36 +
 doc/imx/clk/ccf.txt                           |  63 +-
 drivers/clk/Kconfig                           |   1 +
 drivers/clk/Makefile                          |   1 +
 drivers/clk/clk-composite.c                   |  64 +-
 drivers/clk/clk-divider.c                     |   6 +-
 drivers/clk/clk-fixed-factor.c                |   3 +-
 drivers/clk/clk-gate.c                        |   6 +-
 drivers/clk/clk-mux.c                         |  12 +-
 drivers/clk/clk-uclass.c                      |  68 +-
 drivers/clk/imx/clk-gate2.c                   |   4 +-
 drivers/clk/imx/clk-imx8mp.c                  |   2 +-
 drivers/clk/kendryte/Kconfig                  |  12 +
 drivers/clk/kendryte/Makefile                 |   1 +
 drivers/clk/kendryte/bypass.c                 | 270 +++++++
 drivers/clk/kendryte/clk.c                    | 663 ++++++++++++++++++
 drivers/clk/kendryte/pll.c                    | 601 ++++++++++++++++
 drivers/core/Kconfig                          |   7 +
 drivers/core/Makefile                         |   1 +
 drivers/core/read.c                           |   2 +-
 drivers/core/simple-pm-bus.c                  |  56 ++
 drivers/cpu/riscv_cpu.c                       |  39 +-
 drivers/pinctrl/broadcom/pinctrl-bcm283x.c    |   2 +-
 drivers/pinctrl/mediatek/pinctrl-mtk-common.c |   2 +-
 drivers/reset/Kconfig                         |   5 +
 drivers/reset/Makefile                        |   1 +
 drivers/reset/reset-syscon.c                  |  80 +++
 include/configs/sipeed-maix.h                 |  24 +
 include/dm/read.h                             |   4 +-
 include/dt-bindings/clock/k210-sysctl.h       |  59 ++
 include/dt-bindings/mfd/k210-sysctl.h         |  38 +
 include/dt-bindings/reset/k210-sysctl.h       |  38 +
 include/kendryte/bypass.h                     |  31 +
 include/kendryte/clk.h                        |  35 +
 include/kendryte/pll.h                        |  57 ++
 include/test/export.h                         |  16 +
 lib/hashtable.c                               |   8 +-
 test/dm/Makefile                              |   3 +
 test/dm/k210_pll.c                            |  96 +++
 test/dm/simple-pm-bus.c                       |  45 ++
 test/dm/syscon-reset.c                        |  58 ++
 69 files changed, 3732 insertions(+), 205 deletions(-)
 create mode 100644 arch/riscv/dts/k210-maix-bit.dts
 create mode 100644 arch/riscv/dts/k210.dtsi
 create mode 100644 board/sipeed/maix/Kconfig
 create mode 100644 board/sipeed/maix/MAINTAINERS
 create mode 100644 board/sipeed/maix/Makefile
 create mode 100644 board/sipeed/maix/maix.c
 create mode 100644 configs/sipeed_maix_bitm_defconfig
 create mode 100644 doc/board/sipeed/index.rst
 create mode 100644 doc/board/sipeed/maix.rst
 create mode 100644 doc/device-tree-bindings/bus/simple-pm-bus.txt
 create mode 100644 doc/device-tree-bindings/mfd/kendryte,k210-sysctl.txt
 create mode 100644 doc/device-tree-bindings/reset/syscon-reset.txt
 create mode 100644 drivers/clk/kendryte/Kconfig
 create mode 100644 drivers/clk/kendryte/Makefile
 create mode 100644 drivers/clk/kendryte/bypass.c
 create mode 100644 drivers/clk/kendryte/clk.c
 create mode 100644 drivers/clk/kendryte/pll.c
 create mode 100644 drivers/core/simple-pm-bus.c
 create mode 100644 drivers/reset/reset-syscon.c
 create mode 100644 include/configs/sipeed-maix.h
 create mode 100644 include/dt-bindings/clock/k210-sysctl.h
 create mode 100644 include/dt-bindings/mfd/k210-sysctl.h
 create mode 100644 include/dt-bindings/reset/k210-sysctl.h
 create mode 100644 include/kendryte/bypass.h
 create mode 100644 include/kendryte/clk.h
 create mode 100644 include/kendryte/pll.h
 create mode 100644 include/test/export.h
 create mode 100644 test/dm/k210_pll.c
 create mode 100644 test/dm/simple-pm-bus.c
 create mode 100644 test/dm/syscon-reset.c

-- 
2.25.1