[SRU][G][RISCV] Add support for SiFive Unmatched (LP:#1910965)

[Colin Ian King-2]

== SRU Justifcation Groovy/RISCV ==

BugLink: https://bugs.launchpad.net/bugs/1910965

The SiFive HiFive Unmatched board should be supported as well as the
current Unleashed. There are various upstream commits for this support
and some misc fixes for the Unleashed and Unmatched that are required
for this
board support.

== The fixes ==

https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy

commits:
Christoph Hellwig (1):
      riscv: move sifive_l2_cache.c to drivers/soc

Colin Ian King (1):
      UBUNTU: [Config] Align configs with Unleashed defconfigs

David Abdurachmanov (4):
      PCI: microsemi: Add host driver for Microsemi PCIe controller
      Microsemi PCIe expansion board DT entry.
      SiFive Unleashed CPUFreq
      SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)

Green Wan (1):
      riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00

Greentime Hu (1):
      irqchip/sifive-plic: Fix broken irq_set_affinity() callback

Kefeng Wang (1):
      riscv: only select serial sifive if TTY is enabled

Krzysztof Kozlowski (1):
      dt-bindings: pwm: Convert PWM bindings to json-schema

Pragnesh Patel (2):
      clk: sifive: Add clock enable and disable ops
      spi: dt-bindings: Convert spi-sifive binding to json-schema

Rob Herring (2):
      dt-bindings: More whitespace clean-ups in schema files
      dt-bindings: Explicitly allow additional properties in board/SoC
schemas

Sagar Kadam (2):
      dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
      dt-bindings: riscv: convert pwm bindings to json-schema

Sagar Shrikant Kadam (1):
      i2c: ocores: fix polling mode workaround on FU540-C000 SoC

Yash Shah (10):
      RISC-V: Update l2 cache DT documentation to add support for SiFive
FU740
      RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
FU740
      gpio/sifive: Add DT documentation for SiFive GPIO
      dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
      riscv: dts: add initial support for the SiFive FU740-C000 SoC
      dt-bindings: riscv: Update YAML doc to support SiFive HiFive
Unmatched board
      riscv: dts: add initial board data for the SiFive HiFive Unmatched
      riscv: dts: Add DT support for SiFive L2 cache controller
      riscv: dts: Add DT support for SiFive FU540 GPIO driver
      riscv: dts: Add GPIO reboot method to HiFive Unleashed DTS file

Zong Li (5):
      clk: sifive: Extract prci core to common base
      clk: sifive: Use common name for prci configuration
      clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
      clk: sifive: Fix the wrong bit field shift
      dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI

The RISC-V configs have also been re-aligned to match the RISC-V
Unleashed/Unmatched defconfig for improved clock and power stability and
to fix some weird clock/scheduling random RCU timeouts and hangs during
heavy load on slow backing store I/O at boot time.

== Test Case ==

Build ubuntu 5.8 risc kernel with these patches. QEMU and RISC-V
Unleashed and Unmatched should boot and be rebootable with this fixes.
Tested also with stress-ng and a network uptime ping test for 48 hours.

== Where problems could occur ==

Several places:

1. Clocks - IRQ and clock handling has been modified, so potential for
random timing behaviour changes.
2. CONFIG changes - now aligning the clock, scheduling and power config
settings to the defconfigs for RISC-V unleashed. This does improve
stability on the Ubuntu boots and reboots, but may have unforeseen side
effects.
3. CPU affinity fixes should improve some historical SMP problems but
may uncover other SMP issues.
4. Some of these patches are still not upstream, so there may be some
question to their unreviewed quality.


----

The following changes since commit 7295e646e91b648b7f45b4f36eba14bfe59dd3f6:

  UBUNTU: Ubuntu-riscv-5.8.0-13.15 (2020-12-15 10:33:23 +0100)

are available in the Git repository at:

  https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy

for you to fetch changes up to 86de0730500269fee8b71fcb1be29193455c3be7:

  UBUNTU: [Config] Align configs with Unleashed defconfigs (2021-01-11
09:37:13 +0000)

----------------------------------------------------------------
Colin Ian King (1):
      UBUNTU: [Config] Align configs with Unleashed defconfigs

David Abdurachmanov (5):
      PCI: microsemi: Add host driver for Microsemi PCIe controller
      Microsemi PCIe expansion board DT entry.
      HACK: Revert "of/device: Really only set bus DMA mask when
appropriate"
      SiFive Unleashed CPUFreq
      SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)

Greentime Hu (2):
      irqchip/sifive-plic: Fix broken irq_set_affinity() callback
      irqchip/sifive-plic: Fix getting wrong chip_data when interrupt is
hierarchy

Pragnesh Patel (1):
      clk: sifive: Add clock enable and disable ops

Rob Herring (2):
      dt-bindings: More whitespace clean-ups in schema files
      dt-bindings: Explicitly allow additional properties in board/SoC
schemas

Sagar Kadam (2):
      dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
      dt-bindings: riscv: convert pwm bindings to json-schema

Sagar Shrikant Kadam (1):
      i2c: ocores: fix polling mode workaround on FU540-C000 SoC

Yash Shah (6):
      RISC-V: Update l2 cache DT documentation to add support for SiFive
FU740
      RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
FU740
      dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
      riscv: dts: add initial support for the SiFive FU740-C000 SoC
      dt-bindings: riscv: Update YAML doc to support SiFive HiFive
Unmatched board
      riscv: dts: add initial board data for the SiFive HiFive Unmatched

Zong Li (5):
      clk: sifive: Extract prci core to common base
      clk: sifive: Use common name for prci configuration
      clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
      clk: sifive: Fix the wrong bit field shift
      dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI

 Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml |  60 ++++
 Documentation/devicetree/bindings/gpio/sifive,gpio.yaml        |   4 +-
 Documentation/devicetree/bindings/i2c/i2c-ocores.txt           |   6 +-
 Documentation/devicetree/bindings/pwm/pwm-sifive.txt           |  33 ---
 Documentation/devicetree/bindings/pwm/pwm-sifive.yaml          |  72 +++++
 Documentation/devicetree/bindings/riscv/cpus.yaml              |   6 +
 Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt    |  51 ----
 Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml   | 127
+++++++++
 Documentation/devicetree/bindings/riscv/sifive.yaml            |  20 +-
 Documentation/devicetree/bindings/serial/sifive-serial.yaml    |   4 +-
 Documentation/devicetree/bindings/spi/spi-sifive.yaml          |  10 +-
 arch/riscv/Kconfig                                             |   8 +
 arch/riscv/Kconfig.socs                                        |   2 +-
 arch/riscv/boot/dts/sifive/Makefile                            |   3 +-
 arch/riscv/boot/dts/sifive/fu540-c000.dtsi                     |   5 +
 arch/riscv/boot/dts/sifive/fu740-c000.dtsi                     | 293
+++++++++++++++++++
 arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts  |  28 ++
 arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts            |  66 +++++
 arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts            | 253
+++++++++++++++++
 arch/riscv/configs/defconfig                                   |   5 +
 debian.riscv/config/annotations                                |  17 +-
 debian.riscv/config/config.common.ubuntu                       |  47 +--
 drivers/clk/sifive/Kconfig                                     |   8 +-
 drivers/clk/sifive/Makefile                                    |   2 +-
 drivers/clk/sifive/fu540-prci.c                                | 599
++-------------------------------------
 drivers/clk/sifive/fu540-prci.h                                |  21 ++
 drivers/clk/sifive/fu740-prci.c                                | 123
++++++++
 drivers/clk/sifive/fu740-prci.h                                |  21 ++
 drivers/clk/sifive/sifive-prci.c                               | 574
+++++++++++++++++++++++++++++++++++++
 drivers/clk/sifive/sifive-prci.h                               | 299
++++++++++++++++++++
 drivers/i2c/busses/i2c-ocores.c                                |  23 +-
 drivers/irqchip/irq-sifive-plic.c                              |  10 +-
 drivers/of/device.c                                            |   4 +-
 drivers/pci/controller/Kconfig                                 |   8 +
 drivers/pci/controller/Makefile                                |   1 +
 drivers/pci/controller/pcie-microsemi.c                        | 753
+++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/soc/sifive/sifive_l2_cache.c                           |  49 +++-
 include/dt-bindings/clock/sifive-fu740-prci.h                  |  23 ++
 38 files changed, 2906 insertions(+), 732 deletions(-)
 create mode 100644
Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml
 delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.txt
 create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
 delete mode 100644
Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
 create mode 100644
Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
 create mode 100644 arch/riscv/boot/dts/sifive/fu740-c000.dtsi
 create mode 100644
arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts
 create mode 100644 arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
 create mode 100644 drivers/clk/sifive/fu540-prci.h
 create mode 100644 drivers/clk/sifive/fu740-prci.c
 create mode 100644 drivers/clk/sifive/fu740-prci.h
 create mode 100644 drivers/clk/sifive/sifive-prci.c
 create mode 100644 drivers/clk/sifive/sifive-prci.h
 create mode 100644 drivers/pci/controller/pcie-microsemi.c
 create mode 100644 include/dt-bindings/clock/sifive-fu740-prci.h

--
kernel-team mailing list
[hidden email]
https://lists.ubuntu.com/mailman/listinfo/kernel-team

[Kelsey Skunberg]

Acked-by: Kelsey Skunberg <[hidden email]>


On 2021-01-13 09:16:37 , Colin Ian King wrote:

> == SRU Justifcation Groovy/RISCV ==
>
> BugLink: https://bugs.launchpad.net/bugs/1910965
>
> The SiFive HiFive Unmatched board should be supported as well as the
> current Unleashed. There are various upstream commits for this support
> and some misc fixes for the Unleashed and Unmatched that are required
> for this
> board support.
>
> == The fixes ==
>
> https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy
>
> commits:
> Christoph Hellwig (1):
>       riscv: move sifive_l2_cache.c to drivers/soc
>
> Colin Ian King (1):
>       UBUNTU: [Config] Align configs with Unleashed defconfigs
>
> David Abdurachmanov (4):
>       PCI: microsemi: Add host driver for Microsemi PCIe controller
>       Microsemi PCIe expansion board DT entry.
>       SiFive Unleashed CPUFreq
>       SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)
>
> Green Wan (1):
>       riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00
>
> Greentime Hu (1):
>       irqchip/sifive-plic: Fix broken irq_set_affinity() callback
>
> Kefeng Wang (1):
>       riscv: only select serial sifive if TTY is enabled
>
> Krzysztof Kozlowski (1):
>       dt-bindings: pwm: Convert PWM bindings to json-schema
>
> Pragnesh Patel (2):
>       clk: sifive: Add clock enable and disable ops
>       spi: dt-bindings: Convert spi-sifive binding to json-schema
>
> Rob Herring (2):
>       dt-bindings: More whitespace clean-ups in schema files
>       dt-bindings: Explicitly allow additional properties in board/SoC
> schemas
>
> Sagar Kadam (2):
>       dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
>       dt-bindings: riscv: convert pwm bindings to json-schema
>
> Sagar Shrikant Kadam (1):
>       i2c: ocores: fix polling mode workaround on FU540-C000 SoC
>
> Yash Shah (10):
>       RISC-V: Update l2 cache DT documentation to add support for SiFive
> FU740
>       RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
> FU740
>       gpio/sifive: Add DT documentation for SiFive GPIO
>       dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
>       riscv: dts: add initial support for the SiFive FU740-C000 SoC
>       dt-bindings: riscv: Update YAML doc to support SiFive HiFive
> Unmatched board
>       riscv: dts: add initial board data for the SiFive HiFive Unmatched
>       riscv: dts: Add DT support for SiFive L2 cache controller
>       riscv: dts: Add DT support for SiFive FU540 GPIO driver
>       riscv: dts: Add GPIO reboot method to HiFive Unleashed DTS file
>
> Zong Li (5):
>       clk: sifive: Extract prci core to common base
>       clk: sifive: Use common name for prci configuration
>       clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
>       clk: sifive: Fix the wrong bit field shift
>       dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI
>
> The RISC-V configs have also been re-aligned to match the RISC-V
> Unleashed/Unmatched defconfig for improved clock and power stability and
> to fix some weird clock/scheduling random RCU timeouts and hangs during
> heavy load on slow backing store I/O at boot time.
>
> == Test Case ==
>
> Build ubuntu 5.8 risc kernel with these patches. QEMU and RISC-V
> Unleashed and Unmatched should boot and be rebootable with this fixes.
> Tested also with stress-ng and a network uptime ping test for 48 hours.
>
> == Where problems could occur ==
>
> Several places:
>
> 1. Clocks - IRQ and clock handling has been modified, so potential for
> random timing behaviour changes.
> 2. CONFIG changes - now aligning the clock, scheduling and power config
> settings to the defconfigs for RISC-V unleashed. This does improve
> stability on the Ubuntu boots and reboots, but may have unforeseen side
> effects.
> 3. CPU affinity fixes should improve some historical SMP problems but
> may uncover other SMP issues.
> 4. Some of these patches are still not upstream, so there may be some
> question to their unreviewed quality.
>
>
> ----
>
> The following changes since commit 7295e646e91b648b7f45b4f36eba14bfe59dd3f6:
>
>   UBUNTU: Ubuntu-riscv-5.8.0-13.15 (2020-12-15 10:33:23 +0100)
>
> are available in the Git repository at:
>
>   https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy
>
> for you to fetch changes up to 86de0730500269fee8b71fcb1be29193455c3be7:
>
>   UBUNTU: [Config] Align configs with Unleashed defconfigs (2021-01-11
> 09:37:13 +0000)
>
> ----------------------------------------------------------------
> Colin Ian King (1):
>       UBUNTU: [Config] Align configs with Unleashed defconfigs
>
> David Abdurachmanov (5):
>       PCI: microsemi: Add host driver for Microsemi PCIe controller
>       Microsemi PCIe expansion board DT entry.
>       HACK: Revert "of/device: Really only set bus DMA mask when
> appropriate"
>       SiFive Unleashed CPUFreq
>       SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)
>
> Greentime Hu (2):
>       irqchip/sifive-plic: Fix broken irq_set_affinity() callback
>       irqchip/sifive-plic: Fix getting wrong chip_data when interrupt is
> hierarchy
>
> Pragnesh Patel (1):
>       clk: sifive: Add clock enable and disable ops
>
> Rob Herring (2):
>       dt-bindings: More whitespace clean-ups in schema files
>       dt-bindings: Explicitly allow additional properties in board/SoC
> schemas
>
> Sagar Kadam (2):
>       dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
>       dt-bindings: riscv: convert pwm bindings to json-schema
>
> Sagar Shrikant Kadam (1):
>       i2c: ocores: fix polling mode workaround on FU540-C000 SoC
>
> Yash Shah (6):
>       RISC-V: Update l2 cache DT documentation to add support for SiFive
> FU740
>       RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
> FU740
>       dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
>       riscv: dts: add initial support for the SiFive FU740-C000 SoC
>       dt-bindings: riscv: Update YAML doc to support SiFive HiFive
> Unmatched board
>       riscv: dts: add initial board data for the SiFive HiFive Unmatched
>
> Zong Li (5):
>       clk: sifive: Extract prci core to common base
>       clk: sifive: Use common name for prci configuration
>       clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
>       clk: sifive: Fix the wrong bit field shift
>       dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI
>
>  Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml |  60 ++++
>  Documentation/devicetree/bindings/gpio/sifive,gpio.yaml        |   4 +-
>  Documentation/devicetree/bindings/i2c/i2c-ocores.txt           |   6 +-
>  Documentation/devicetree/bindings/pwm/pwm-sifive.txt           |  33 ---
>  Documentation/devicetree/bindings/pwm/pwm-sifive.yaml          |  72 +++++
>  Documentation/devicetree/bindings/riscv/cpus.yaml              |   6 +
>  Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt    |  51 ----
>  Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml   | 127
> +++++++++
>  Documentation/devicetree/bindings/riscv/sifive.yaml            |  20 +-
>  Documentation/devicetree/bindings/serial/sifive-serial.yaml    |   4 +-
>  Documentation/devicetree/bindings/spi/spi-sifive.yaml          |  10 +-
>  arch/riscv/Kconfig                                             |   8 +
>  arch/riscv/Kconfig.socs                                        |   2 +-
>  arch/riscv/boot/dts/sifive/Makefile                            |   3 +-
>  arch/riscv/boot/dts/sifive/fu540-c000.dtsi                     |   5 +
>  arch/riscv/boot/dts/sifive/fu740-c000.dtsi                     | 293
> +++++++++++++++++++
>  arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts  |  28 ++
>  arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts            |  66 +++++
>  arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts            | 253
> +++++++++++++++++
>  arch/riscv/configs/defconfig                                   |   5 +
>  debian.riscv/config/annotations                                |  17 +-
>  debian.riscv/config/config.common.ubuntu                       |  47 +--
>  drivers/clk/sifive/Kconfig                                     |   8 +-
>  drivers/clk/sifive/Makefile                                    |   2 +-
>  drivers/clk/sifive/fu540-prci.c                                | 599
> ++-------------------------------------
>  drivers/clk/sifive/fu540-prci.h                                |  21 ++
>  drivers/clk/sifive/fu740-prci.c                                | 123
> ++++++++
>  drivers/clk/sifive/fu740-prci.h                                |  21 ++
>  drivers/clk/sifive/sifive-prci.c                               | 574
> +++++++++++++++++++++++++++++++++++++
>  drivers/clk/sifive/sifive-prci.h                               | 299
> ++++++++++++++++++++
>  drivers/i2c/busses/i2c-ocores.c                                |  23 +-
>  drivers/irqchip/irq-sifive-plic.c                              |  10 +-
>  drivers/of/device.c                                            |   4 +-
>  drivers/pci/controller/Kconfig                                 |   8 +
>  drivers/pci/controller/Makefile                                |   1 +
>  drivers/pci/controller/pcie-microsemi.c                        | 753
> +++++++++++++++++++++++++++++++++++++++++++++++++
>  drivers/soc/sifive/sifive_l2_cache.c                           |  49 +++-
>  include/dt-bindings/clock/sifive-fu740-prci.h                  |  23 ++
>  38 files changed, 2906 insertions(+), 732 deletions(-)
>  create mode 100644
> Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml
>  delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.txt
>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
>  delete mode 100644
> Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
>  create mode 100644
> Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
>  create mode 100644 arch/riscv/boot/dts/sifive/fu740-c000.dtsi
>  create mode 100644
> arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts
>  create mode 100644 arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
>  create mode 100644 drivers/clk/sifive/fu540-prci.h
>  create mode 100644 drivers/clk/sifive/fu740-prci.c
>  create mode 100644 drivers/clk/sifive/fu740-prci.h
>  create mode 100644 drivers/clk/sifive/sifive-prci.c
>  create mode 100644 drivers/clk/sifive/sifive-prci.h
>  create mode 100644 drivers/pci/controller/pcie-microsemi.c
>  create mode 100644 include/dt-bindings/clock/sifive-fu740-prci.h
>
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[Stefan Bader-2]

On 13.01.21 10:16, Colin Ian King wrote:

> == SRU Justifcation Groovy/RISCV ==
>
> BugLink: https://bugs.launchpad.net/bugs/1910965
>
> The SiFive HiFive Unmatched board should be supported as well as the
> current Unleashed. There are various upstream commits for this support
> and some misc fixes for the Unleashed and Unmatched that are required
> for this
> board support.
>
> == The fixes ==
>
> https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy
>
> commits:
> Christoph Hellwig (1):
>       riscv: move sifive_l2_cache.c to drivers/soc
>
> Colin Ian King (1):
>       UBUNTU: [Config] Align configs with Unleashed defconfigs
>
> David Abdurachmanov (4):
>       PCI: microsemi: Add host driver for Microsemi PCIe controller
>       Microsemi PCIe expansion board DT entry.
>       SiFive Unleashed CPUFreq
>       SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)
>
> Green Wan (1):
>       riscv: dts: add support for PDMA device of HiFive Unleashed Rev A00
>
> Greentime Hu (1):
>       irqchip/sifive-plic: Fix broken irq_set_affinity() callback
>
> Kefeng Wang (1):
>       riscv: only select serial sifive if TTY is enabled
>
> Krzysztof Kozlowski (1):
>       dt-bindings: pwm: Convert PWM bindings to json-schema
>
> Pragnesh Patel (2):
>       clk: sifive: Add clock enable and disable ops
>       spi: dt-bindings: Convert spi-sifive binding to json-schema
>
> Rob Herring (2):
>       dt-bindings: More whitespace clean-ups in schema files
>       dt-bindings: Explicitly allow additional properties in board/SoC
> schemas
>
> Sagar Kadam (2):
>       dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
>       dt-bindings: riscv: convert pwm bindings to json-schema
>
> Sagar Shrikant Kadam (1):
>       i2c: ocores: fix polling mode workaround on FU540-C000 SoC
>
> Yash Shah (10):
>       RISC-V: Update l2 cache DT documentation to add support for SiFive
> FU740
>       RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
> FU740
>       gpio/sifive: Add DT documentation for SiFive GPIO
>       dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
>       riscv: dts: add initial support for the SiFive FU740-C000 SoC
>       dt-bindings: riscv: Update YAML doc to support SiFive HiFive
> Unmatched board
>       riscv: dts: add initial board data for the SiFive HiFive Unmatched
>       riscv: dts: Add DT support for SiFive L2 cache controller
>       riscv: dts: Add DT support for SiFive FU540 GPIO driver
>       riscv: dts: Add GPIO reboot method to HiFive Unleashed DTS file
>
> Zong Li (5):
>       clk: sifive: Extract prci core to common base
>       clk: sifive: Use common name for prci configuration
>       clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
>       clk: sifive: Fix the wrong bit field shift
>       dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI
>
> The RISC-V configs have also been re-aligned to match the RISC-V
> Unleashed/Unmatched defconfig for improved clock and power stability and
> to fix some weird clock/scheduling random RCU timeouts and hangs during
> heavy load on slow backing store I/O at boot time.
>
> == Test Case ==
>
> Build ubuntu 5.8 risc kernel with these patches. QEMU and RISC-V
> Unleashed and Unmatched should boot and be rebootable with this fixes.
> Tested also with stress-ng and a network uptime ping test for 48 hours.
>
> == Where problems could occur ==
>
> Several places:
>
> 1. Clocks - IRQ and clock handling has been modified, so potential for
> random timing behaviour changes.
> 2. CONFIG changes - now aligning the clock, scheduling and power config
> settings to the defconfigs for RISC-V unleashed. This does improve
> stability on the Ubuntu boots and reboots, but may have unforeseen side
> effects.
> 3. CPU affinity fixes should improve some historical SMP problems but
> may uncover other SMP issues.
> 4. Some of these patches are still not upstream, so there may be some
> question to their unreviewed quality.
>
>
> ----
>
> The following changes since commit 7295e646e91b648b7f45b4f36eba14bfe59dd3f6:
>
>   UBUNTU: Ubuntu-riscv-5.8.0-13.15 (2020-12-15 10:33:23 +0100)
>
> are available in the Git repository at:
>
>   https://git.launchpad.net/~colin-king/+git/ubuntu-riscv-groovy
>
> for you to fetch changes up to 86de0730500269fee8b71fcb1be29193455c3be7:
>
>   UBUNTU: [Config] Align configs with Unleashed defconfigs (2021-01-11
> 09:37:13 +0000)
>
> ----------------------------------------------------------------
> Colin Ian King (1):
>       UBUNTU: [Config] Align configs with Unleashed defconfigs
>
> David Abdurachmanov (5):
>       PCI: microsemi: Add host driver for Microsemi PCIe controller
>       Microsemi PCIe expansion board DT entry.
>       HACK: Revert "of/device: Really only set bus DMA mask when
> appropriate"
>       SiFive Unleashed CPUFreq
>       SiFive HiFive Unleashed: Add PWM LEDs (D1, D2, D3, D4)
>
> Greentime Hu (2):
>       irqchip/sifive-plic: Fix broken irq_set_affinity() callback
>       irqchip/sifive-plic: Fix getting wrong chip_data when interrupt is
> hierarchy
>
> Pragnesh Patel (1):
>       clk: sifive: Add clock enable and disable ops
>
> Rob Herring (2):
>       dt-bindings: More whitespace clean-ups in schema files
>       dt-bindings: Explicitly allow additional properties in board/SoC
> schemas
>
> Sagar Kadam (2):
>       dt-bindings: riscv: sifive-l2-cache: convert bindings to json-schema
>       dt-bindings: riscv: convert pwm bindings to json-schema
>
> Sagar Shrikant Kadam (1):
>       i2c: ocores: fix polling mode workaround on FU540-C000 SoC
>
> Yash Shah (6):
>       RISC-V: Update l2 cache DT documentation to add support for SiFive
> FU740
>       RISC-V: sifive_l2_cache: Update L2 cache driver to support SiFive
> FU740
>       dt-bindings: riscv: Update DT binding docs to support SiFive FU740 SoC
>       riscv: dts: add initial support for the SiFive FU740-C000 SoC
>       dt-bindings: riscv: Update YAML doc to support SiFive HiFive
> Unmatched board
>       riscv: dts: add initial board data for the SiFive HiFive Unmatched
>
> Zong Li (5):
>       clk: sifive: Extract prci core to common base
>       clk: sifive: Use common name for prci configuration
>       clk: sifive: Add a driver for the SiFive FU740 PRCI IP block
>       clk: sifive: Fix the wrong bit field shift
>       dt-bindings: fu740: prci: add YAML documentation for the FU740 PRCI
>
>  Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml |  60 ++++
>  Documentation/devicetree/bindings/gpio/sifive,gpio.yaml        |   4 +-
>  Documentation/devicetree/bindings/i2c/i2c-ocores.txt           |   6 +-
>  Documentation/devicetree/bindings/pwm/pwm-sifive.txt           |  33 ---
>  Documentation/devicetree/bindings/pwm/pwm-sifive.yaml          |  72 +++++
>  Documentation/devicetree/bindings/riscv/cpus.yaml              |   6 +
>  Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt    |  51 ----
>  Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml   | 127
> +++++++++
>  Documentation/devicetree/bindings/riscv/sifive.yaml            |  20 +-
>  Documentation/devicetree/bindings/serial/sifive-serial.yaml    |   4 +-
>  Documentation/devicetree/bindings/spi/spi-sifive.yaml          |  10 +-
>  arch/riscv/Kconfig                                             |   8 +
>  arch/riscv/Kconfig.socs                                        |   2 +-
>  arch/riscv/boot/dts/sifive/Makefile                            |   3 +-
>  arch/riscv/boot/dts/sifive/fu540-c000.dtsi                     |   5 +
>  arch/riscv/boot/dts/sifive/fu740-c000.dtsi                     | 293
> +++++++++++++++++++
>  arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts  |  28 ++
>  arch/riscv/boot/dts/sifive/hifive-unleashed-a00.dts            |  66 +++++
>  arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts            | 253
> +++++++++++++++++
>  arch/riscv/configs/defconfig                                   |   5 +
>  debian.riscv/config/annotations                                |  17 +-
>  debian.riscv/config/config.common.ubuntu                       |  47 +--
>  drivers/clk/sifive/Kconfig                                     |   8 +-
>  drivers/clk/sifive/Makefile                                    |   2 +-
>  drivers/clk/sifive/fu540-prci.c                                | 599
> ++-------------------------------------
>  drivers/clk/sifive/fu540-prci.h                                |  21 ++
>  drivers/clk/sifive/fu740-prci.c                                | 123
> ++++++++
>  drivers/clk/sifive/fu740-prci.h                                |  21 ++
>  drivers/clk/sifive/sifive-prci.c                               | 574
> +++++++++++++++++++++++++++++++++++++
>  drivers/clk/sifive/sifive-prci.h                               | 299
> ++++++++++++++++++++
>  drivers/i2c/busses/i2c-ocores.c                                |  23 +-
>  drivers/irqchip/irq-sifive-plic.c                              |  10 +-
>  drivers/of/device.c                                            |   4 +-
>  drivers/pci/controller/Kconfig                                 |   8 +
>  drivers/pci/controller/Makefile                                |   1 +
>  drivers/pci/controller/pcie-microsemi.c                        | 753
> +++++++++++++++++++++++++++++++++++++++++++++++++
>  drivers/soc/sifive/sifive_l2_cache.c                           |  49 +++-
>  include/dt-bindings/clock/sifive-fu740-prci.h                  |  23 ++
>  38 files changed, 2906 insertions(+), 732 deletions(-)
>  create mode 100644
> Documentation/devicetree/bindings/clock/sifive/fu740-prci.yaml
>  delete mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.txt
>  create mode 100644 Documentation/devicetree/bindings/pwm/pwm-sifive.yaml
>  delete mode 100644
> Documentation/devicetree/bindings/riscv/sifive-l2-cache.txt
>  create mode 100644
> Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml
>  create mode 100644 arch/riscv/boot/dts/sifive/fu740-c000.dtsi
>  create mode 100644
> arch/riscv/boot/dts/sifive/hifive-unleashed-a00-microsemi.dts
>  create mode 100644 arch/riscv/boot/dts/sifive/hifive-unmatched-a00.dts
>  create mode 100644 drivers/clk/sifive/fu540-prci.h
>  create mode 100644 drivers/clk/sifive/fu740-prci.c
>  create mode 100644 drivers/clk/sifive/fu740-prci.h
>  create mode 100644 drivers/clk/sifive/sifive-prci.c
>  create mode 100644 drivers/clk/sifive/sifive-prci.h
>  create mode 100644 drivers/pci/controller/pcie-microsemi.c
>  create mode 100644 include/dt-bindings/clock/sifive-fu740-prci.h
>

Acked-by: Stefan Bader <[hidden email]>

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