linux-kernel - Re: [PATCH v3 0/5] Add Microchip PolarFire Soc Support

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Message-ID: <mhng-2a16d74b-c896-4ad0-9d02-87b3b09ee3be@palmerdabbelt-glaptop>
Date:   Mon, 21 Dec 2020 19:19:27 -0800 (PST)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     Atish Patra <Atish.Patra@....com>
CC:     linux-kernel@...r.kernel.org, Atish Patra <Atish.Patra@....com>,
        aou@...s.berkeley.edu, Alistair Francis <Alistair.Francis@....com>,
        Anup Patel <Anup.Patel@....com>, bin.meng@...driver.com,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        Paul Walmsley <paul.walmsley@...ive.com>, robh+dt@...nel.org,
        Ivan.Griffin@...rochip.com, Cyril.Jean@...rochip.com,
        daire.mcnamara@...rochip.com, Conor.Dooley@...rochip.com
Subject:     Re: [PATCH v3 0/5] Add Microchip PolarFire Soc Support 

On Fri, 04 Dec 2020 00:58:30 PST (-0800), Atish Patra wrote:
> This series adds minimal support for Microchip Polar Fire Soc Icicle kit.
> It is rebased on v5.10-rc6 and depends on clock support.
> Only MMC and ethernet drivers are enabled via this series.
> The idea here is to add the foundational patches so that other drivers
> can be added to on top of this. The device tree may change based on
> feedback on bindings of individual driver support patches.
>
> This series has been tested on Qemu and Polar Fire Soc Icicle kit.
> The following qemu series is necessary to test it on Qemu.
>
> The series can also be found at.
> https://github.com/atishp04/linux/tree/polarfire_support_upstream_v3
>
> I noticed the latest version of mmc driver[2] hangs on the board with
> the latest clock driver. That's why, I have tested with the old clock
> driver available in the above github repo.

IIRC the previous version was an RFC, but this is a PATCH.  I'd be generally
happy to take it on for-next, but I don't want to merge something that doesn't
boot and that I don't have any way to fix (I don't have one of the boards yet).

> [1] https://lists.nongnu.org/archive/html/qemu-devel/2020-10/msg08582.html
> [2] https://www.spinics.net/lists/devicetree/msg383626.html
>
> Changes from v2->v3:
> 1. Fixed a typo in dt binding.
> 2. Included MAINTAINERS entry for PolarFire SoC.
> 3. Improved the dts file by using lowercase clock names and keeping phy
>    details in board specific dts file.
>
> Changes from v1->v2:
> 1. Modified the DT to match the device tree in U-Boot.
> 2. Added both eMMC & SDcard entries in DT. However, SD card is only enabled
>    as it allows larger storage option for linux distros.
>
> Atish Patra (4):
> RISC-V: Add Microchip PolarFire SoC kconfig option
> dt-bindings: riscv: microchip: Add YAML documentation for the
> PolarFire SoC
> RISC-V: Initial DTS for Microchip ICICLE board
> RISC-V: Enable Microchip PolarFire ICICLE SoC
>
> Conor Dooley (1):
> MAINTAINERS: add microchip polarfire soc support
>
> .../devicetree/bindings/riscv/microchip.yaml  |  28 ++
> MAINTAINERS                                   |   8 +
> arch/riscv/Kconfig.socs                       |   7 +
> arch/riscv/boot/dts/Makefile                  |   1 +
> arch/riscv/boot/dts/microchip/Makefile        |   2 +
> .../microchip/microchip-mpfs-icicle-kit.dts   |  72 ++++
> .../boot/dts/microchip/microchip-mpfs.dtsi    | 331 ++++++++++++++++++
> arch/riscv/configs/defconfig                  |   4 +
> 8 files changed, 453 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/riscv/microchip.yaml
> create mode 100644 arch/riscv/boot/dts/microchip/Makefile
> create mode 100644 arch/riscv/boot/dts/microchip/microchip-mpfs-icicle-kit.dts
> create mode 100644 arch/riscv/boot/dts/microchip/microchip-mpfs.dtsi