linux-kernel - Re: [PATCH v8 0/6] mtd: rawnand: add NVIDIA Tegra NAND flash support

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Date:   Mon, 25 Jun 2018 14:34:37 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Stefan Agner <stefan@...er.ch>
Cc:     boris.brezillon@...tlin.com, dwmw2@...radead.org,
        computersforpeace@...il.com, marek.vasut@...il.com,
        robh+dt@...nel.org, mark.rutland@....com, thierry.reding@...il.com,
        dev@...xeye.de, richard@....at, marcel@...wiler.com,
        krzk@...nel.org, digetx@...il.com, benjamin.lindqvist@...ian.se,
        jonathanh@...dia.com, pdeschrijver@...dia.com, pgaikwad@...dia.com,
        mirza.krak@...il.com, gaireg@...reg.de,
        linux-mtd@...ts.infradead.org, linux-tegra@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 0/6] mtd: rawnand: add NVIDIA Tegra NAND flash
 support

Hi Stefan,

On Sun, 24 Jun 2018 23:27:21 +0200, Stefan Agner <stefan@...er.ch>
wrote:

> Eigth and hopefully final revision gets rid of nand_release() as
> suggested by Boris.
> 
> --
> Stefan
> 
> Changes since v1:
> - Split controller and NAND chip structure
> - Add BCH support
> - Allow to select algorithm and strength using device tree
> - Improve HW ECC error reporting and use DEC_STATUS_BUF only
> - Use SPDX license identifier
> - Use per algorithm mtd_ooblayout_ops
> - Use setup_data_interface callback for NAND timing configuration
> 
> Changes since v2:
> - Set clock rate using assigned-clocks
> - Use BIT() macro
> - Fix and improve timing calculation
> - Improve ECC error handling
> - Store OOB layout for tag area in Tegra chip structure
> - Update/fix bindings
> - Use more specific variable names (replace "value")
> - Introduce nand-is-boot-medium
> - Choose sensible ECC strenght automatically
> - Use wait_for_completion_timeout
> - Print register dump on completion timeout
> - Unify tegra_nand_(read|write)_page in tegra_nand_page_xfer
> 
> Changes since v3:
> - Implement tegra_nand_(read|write)_raw using DMA
> - Implement tegra_nand_(read|write)_oob using DMA
> - Name registers according to Tegra 2 Technical Reference Manual (v02p)
> - Use wait_for_completion_io_timeout to account for IO
> - Get chip select id from device tree reg property
> - Clear interrupts and reinit wait queues in case command/DMA times out
> - Set default MTD name after nand_set_flash_node
> - Move MODULE_DEVICE_TABLE after declaration of tegra_nand_of_match
> - Make (rs|bch)_strength static
> 
> Changes since v4:
> - Pass OOB area to nand_check_erased_ecc_chunk
> - Pass algorithm specific bits_per_step to tegra_nand_get_strength
> - Store ECC layout in chip structure
> - Fix pointer assignment (use NULL)
> - Removed obsolete header delay.h
> - Fixed newlines
> - Use non-_io variant of wait_for_completion_timeout
> 
> Changes since v5:
> - Drop extra OOB bytes support
> 
> Changes since v6:
> - checkpatch.pl fixes
> 
> Changes since v7:
> - Replace nand_release() with mtd_device_unregister() + nand_cleanup()
> 
> Lucas Stach (1):
>   ARM: dts: tegra: add Tegra20 NAND flash controller node
> 
> Stefan Agner (5):
>   mtd: rawnand: add Reed-Solomon error correction algorithm
>   mtd: rawnand: add an option to specify NAND chip as a boot device
>   mtd: rawnand: tegra: add devicetree binding
>   mtd: rawnand: add NVIDIA Tegra NAND Flash controller driver
>   ARM: dts: tegra: enable NAND flash on Colibri T20
> 
>  .../devicetree/bindings/mtd/nand.txt          |    6 +-
>  .../bindings/mtd/nvidia-tegra20-nand.txt      |   64 +
>  MAINTAINERS                                   |    7 +
>  arch/arm/boot/dts/tegra20-colibri-512.dtsi    |   16 +
>  arch/arm/boot/dts/tegra20.dtsi                |   15 +
>  drivers/mtd/nand/raw/Kconfig                  |   10 +
>  drivers/mtd/nand/raw/Makefile                 |    1 +
>  drivers/mtd/nand/raw/nand_base.c              |    4 +
>  drivers/mtd/nand/raw/tegra_nand.c             | 1230 +++++++++++++++++
>  include/linux/mtd/rawnand.h                   |    7 +
>  10 files changed, 1359 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/mtd/nvidia-tegra20-nand.txt
>  create mode 100644 drivers/mtd/nand/raw/tegra_nand.c
> 

Series applied to nand/next. I just changed the subject of patch3/6 to
be "dt-bindings: mtd: add tegra NAND controller binding".

Thanks,
Miquèl