netdev - Re: [PATCH v4 0/9] Enable networking support for StarFive JH7100 SoC

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Date: Mon, 18 Dec 2023 14:53:21 -0800
From: Jacob Keller <jacob.e.keller@...el.com>
To: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>, "David S. Miller"
	<davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
	<kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Rob Herring
	<robh+dt@...nel.org>, Krzysztof Kozlowski
	<krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
	"Emil Renner Berthing" <kernel@...il.dk>, Samin Guo
	<samin.guo@...rfivetech.com>, Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>, Albert Ou <aou@...s.berkeley.edu>, Hal
 Feng <hal.feng@...rfivetech.com>, Michael Turquette
	<mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Alexandre Torgue
	<alexandre.torgue@...s.st.com>, Jose Abreu <joabreu@...opsys.com>, "Maxime
 Coquelin" <mcoquelin.stm32@...il.com>, Richard Cochran
	<richardcochran@...il.com>, Giuseppe Cavallaro <peppe.cavallaro@...com>
CC: <netdev@...r.kernel.org>, <devicetree@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
	<linux-clk@...r.kernel.org>, <linux-stm32@...md-mailman.stormreply.com>,
	<linux-arm-kernel@...ts.infradead.org>, <kernel@...labora.com>
Subject: Re: [PATCH v4 0/9] Enable networking support for StarFive JH7100 SoC



On 12/18/2023 1:44 PM, Cristian Ciocaltea wrote:
> This patch series adds ethernet support for the StarFive JH7100 SoC and makes it
> available for the StarFive VisionFive V1 and BeagleV Starlight boards, although
> I could only validate on the former SBC.  Thank you Emil and Geert for helping
> with tests on BeagleV!
> 
> The work is heavily based on the reference implementation [1] and depends on the
> SiFive Composable Cache controller and non-coherent DMA support provided by Emil
> via [2] and [3].
> 
> *Update*: as of next-20231214, all dependencies have been merged.
> 
> [1] https://github.com/starfive-tech/linux/commits/visionfive
> [2] https://lore.kernel.org/all/CAJM55Z_pdoGxRXbmBgJ5GbVWyeM1N6+LHihbNdT26Oo_qA5VYA@mail.gmail.com/
> [3] https://lore.kernel.org/all/20231130151932.729708-1-emil.renner.berthing@canonical.com/
> 

I'm not super familiar with how the various pieces fit together, so I'm
not sure how valuable my read through is.. but I didn't see anything
obviously wrong.

For the series:

Reviewed-by: Jacob Keller <jacob.e.keller@...el.com>

> Changes in v4:
>  - Restricted double usage of 'ahb' reset name in PATCH 2 (Jessica, Samuel)
>  - Moved phy reference from PATCH 5 to both PATCH 6 & 7 where the node is
>    actually defined (Emil, Conor)
>  - Drop unnecessary gpio include in PATCH 6; also added a DTS comment describing
>    the rational behind RX internal delay adjustment (Andrew)
>  - v3:
>    https://lore.kernel.org/lkml/20231215204050.2296404-1-cristian.ciocaltea@collabora.com/
> 
> Changes in v3:
>  - Rebased series onto next-20231214 and dropped the ccache & DMA coherency
>    related patches (v2 06-08/12) handled by Emil via [3]
>  - Squashed PATCH v2 01/12 into PATCH v3 2/9, per Krzysztof's review
>  - Dropped incorrect PATCH v2 02/12
>  - Incorporated Emil's feedback; also added his Co-developed-by on all dts
>    patches
>  - Documented the need of adjusting RX internal delay in PATCH v3 8/9, per
>    Andrew's request
>  - Added clock fixes from Emil (PATCH v3 8-9/9) required to support 10/100Mb
>    link speeds
>  - v2:
>    https://lore.kernel.org/lkml/20231029042712.520010-1-cristian.ciocaltea@collabora.com/
> 
> Changes in v2:
>  - Dropped ccache PATCH 01-05 reworked by Emil via [2]
>  - Dropped already applied PATCH 06/12
>  - Added PATCH v2 01 to prepare snps-dwmac binding for JH7100 support
>  - Added PATCH v2 02-03 to provide some jh7110-dwmac binding optimizations
>  - Handled JH7110 conflicting work in PATCH 07 via PATCH v2 04
>  - Reworked PATCH 8 via PATCH v2 05, adding JH7100 quirk and dropped
>    starfive,gtxclk-dlychain DT property; also fixed register naming
>  - Added PATCH v2 08 providing DMA coherency related DT changes
>  - Updated PATCH 9 commit msg:
>    s/OF_DMA_DEFAULT_COHERENT/ARCH_DMA_DEFAULT_COHERENT/
>  - Replaced 'uncached-offset' property with 'sifive,cache-ops' in PATCH 10/12
>    and dropped 'sideband' reg
>  - Add new patch providing coherent DMA memory pool (PATCH v2 10)
>  - Updated PATCH 11/12 according to the stmmac glue layer changes in upstream
>  - Split PATCH 12/12 into PATCH v2 10-12 to handle individual gmac setup of
>    VisionFive v1 and BeagleV boards as they use different PHYs; also switched
>    phy-mode from "rgmii-tx" to "rgmii-id" (requires a reduction of
>    rx-internal-delay-ps by ~50%)
>  - Rebased series onto next-20231024
>  - v1:
>    https://lore.kernel.org/lkml/20230211031821.976408-1-cristian.ciocaltea@collabora.com/
> 
> Cristian Ciocaltea (7):
>   dt-bindings: net: starfive,jh7110-dwmac: Drop redundant reset
>     description
>   dt-bindings: net: starfive,jh7110-dwmac: Add JH7100 SoC compatible
>   net: stmmac: dwmac-starfive: Add support for JH7100 SoC
>   riscv: dts: starfive: jh7100: Add sysmain and gmac DT nodes
>   riscv: dts: starfive: jh7100-common: Setup pinmux and enable gmac
>   riscv: dts: starfive: visionfive-v1: Setup ethernet phy
>   riscv: dts: starfive: beaglev-starlight: Setup phy reset gpio
> 
> Emil Renner Berthing (2):
>   clk: starfive: Add flags argument to JH71X0__MUX macro
>   clk: starfive: jh7100: Add CLK_SET_RATE_PARENT to gmac_tx
> 
>  .../devicetree/bindings/net/snps,dwmac.yaml   | 11 ++-
>  .../bindings/net/starfive,jh7110-dwmac.yaml   | 75 ++++++++++++-----
>  .../dts/starfive/jh7100-beaglev-starlight.dts | 11 +++
>  .../boot/dts/starfive/jh7100-common.dtsi      | 84 +++++++++++++++++++
>  .../jh7100-starfive-visionfive-v1.dts         | 22 ++++-
>  arch/riscv/boot/dts/starfive/jh7100.dtsi      | 36 ++++++++
>  .../clk/starfive/clk-starfive-jh7100-audio.c  |  2 +-
>  drivers/clk/starfive/clk-starfive-jh7100.c    | 32 +++----
>  .../clk/starfive/clk-starfive-jh7110-aon.c    |  6 +-
>  .../clk/starfive/clk-starfive-jh7110-isp.c    |  2 +-
>  .../clk/starfive/clk-starfive-jh7110-sys.c    | 26 +++---
>  drivers/clk/starfive/clk-starfive-jh71x0.h    |  4 +-
>  drivers/net/ethernet/stmicro/stmmac/Kconfig   |  6 +-
>  .../ethernet/stmicro/stmmac/dwmac-starfive.c  | 32 ++++++-
>  14 files changed, 280 insertions(+), 69 deletions(-)
>