linux-kernel - Re: [PATCH v8 0/7] MIPS: CI20: Add efuse driver for Ingenic JZ4780 and attach to DM9000 for stable MAC addresses

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Date:   Thu, 5 Mar 2020 18:03:33 +0000
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     "H. Nikolaus Schaller" <hns@...delico.com>,
        PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>,
        Andreas Kemnade <andreas@...nade.info>,
        Paul Cercueil <paul@...pouillou.net>,
        Mathieu Malaterre <malat@...ian.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Ralf Baechle <ralf@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        Mauro Carvalho Chehab <mchehab+samsung@...nel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Jonathan Cameron <Jonathan.Cameron@...wei.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        Kees Cook <keescook@...omium.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-mips@...r.kernel.org, letux-kernel@...nphoenux.org,
        kernel@...a-handheld.com
Subject: Re: [PATCH v8 0/7] MIPS: CI20: Add efuse driver for Ingenic JZ4780
 and attach to DM9000 for stable MAC addresses



On 28/02/2020 16:00, H. Nikolaus Schaller wrote:
> * fix a compiler warning/error (reported by Paul Cercueil <paul@...pouillou.net>)
> * remove clock-names from properties (suggested by Paul Cercueil <paul@...pouillou.net>)
> 
> PATCH V7 2020-02-28 14:58:30:
> * use devm_add_action_or_reset to unprepare clock in case of error (suggested by Paul Cercueil <paul@...pouillou.net>)
> * use already existing constants to check for overflow of rd_adj and rd_strobe
> * remove clock-names from bindings example and DTS (suggested by Paul Cercueil <paul@...pouillou.net>)
> * addition for nemc driver to handle this correctly (contributed by Paul Cercueil <paul@...pouillou.net>)
> * make efuse a child node of nemc to avoid problems with overlapping
>    reg address ranges (suggested by Paul Cercueil <paul@...pouillou.net>)
> 
> PATCH V6 2020-02-26 12:16:07:
> * add dependency on CONFIG_OF and select REGMAP_MMIO (suggested by Paul Cercueil <paul@...pouillou.net>)
> * add clk_prepare_enable() (suggested by Paul Cercueil <paul@...pouillou.net>)
> * inline jz4780_efuse_read_32bytes() since it is only used once
> * remove read optimization for full block (suggested by Paul Cercueil <paul@...pouillou.net>)
> * simplify calculations for rd_adj and rd_strobe (suggested by Paul Cercueil <paul@...pouillou.net>)
> * do calculations for rd_adj and rd_strobe in local variables
> * fix overflow check (did allow for 5 bit values although register is 4 bit wide)
> * fixes for yaml (sugested by Andreas Kemnade <andreas@...nade.info>)
> 
> PATCH V5 2020-02-22 11:25:35:
> * no longer RFC but PATCH
> * add yaml bindings (by Andreas Kemnade <andreas@...nade.info>)
> * fixes to yaml (suggested by Rob Herring <robh@...nel.org>)
> 
> RFC V4 2020-02-17 17:55:35:
> * removed read_only for nvmem config because there is no write method
> * Kconfig: replaced depends MACH_JZ4780 with MACH_INGENIC
> * run through checkpatch and fixed issues
> * made use of devm_nvram_register() and get rid of jz4780_efuse_remove()
>    (suggested by Srinivas Kandagatla <srinivas.kandagatla@...aro.org>)
> * squashed previous patch 1/9 and 2/9 into single (regmap based) driver
> 
> RFC V3 2020-02-16 20:20:59:
> 
> This series is based on and a follow up for
> 
> https://lore.kernel.org/patchwork/cover/868157/
> 
> ("[v2,0/2] Add efuse driver for Ingenic JZ4780 SoC")
> 
> Original authors were
> PrasannaKumar Muralidharan <prasannatsmkumar@...il.com>
> Mathieu Malaterre <malat@...ian.org>
> 
> and there are additions / code improvements by
> H. Nikolaus Schaller <hns@...delico.com>
> Paul Cercueil <paul@...pouillou.net>
> 
> This setup works, if the dm9000 driver is compiled
> as a module.
> 
> Therefore it is all RFC level. It is also not completely
> checkpatched.
> 
> 
> H. Nikolaus Schaller (1):
>    MIPS: DTS: CI20: make DM9000 Ethernet controller use NVMEM to find the
>      default MAC address
> 
> Paul Cercueil (1):
>    memory: jz4780_nemc: Only request IO memory the driver will use
> 
> PrasannaKumar Muralidharan (5):
>    nvmem: add driver for JZ4780 efuse
>    Bindings: nvmem: add bindings for JZ4780 efuse
>    Documentation: ABI: nvmem: add documentation for JZ4780 efuse ABI
>    nvmem: MAINTAINERS: add maintainer for JZ4780 efuse driver
>    MIPS: DTS: JZ4780: define node for JZ4780 efuse
> 
>   .../ABI/testing/sysfs-driver-jz4780-efuse     |  16 ++
>   .../bindings/nvmem/ingenic,jz4780-efuse.yaml  |  45 ++++
>   MAINTAINERS                                   |   5 +
>   arch/mips/boot/dts/ingenic/ci20.dts           |   3 +
>   arch/mips/boot/dts/ingenic/jz4780.dtsi        |  19 +-
>   drivers/memory/jz4780-nemc.c                  |  15 +-
>   drivers/nvmem/Kconfig                         |  12 +
>   drivers/nvmem/Makefile                        |   2 +
>   drivers/nvmem/jz4780-efuse.c                  | 239 ++++++++++++++++++
>   9 files changed, 353 insertions(+), 3 deletions(-)
>   create mode 100644 Documentation/ABI/testing/sysfs-driver-jz4780-efuse
>   create mode 100644 Documentation/devicetree/bindings/nvmem/ingenic,jz4780-efuse.yaml
>   create mode 100644 drivers/nvmem/jz4780-efuse.c
> 
I have applied Patch 2/7, 3/7, 4/7 with are nvmem subsystem related, 
other patches have to go via respective maintainer tree.

--srini