[U-Boot] [PATCH 0/4] nand: davinci: enable driver model for NAND

[Adam Ford]

On Thu, Jun 6, 2019 at 10:50 AM Bartosz Golaszewski <brgl at bgdev.pl> wrote:
>
> From: Bartosz Golaszewski <bgolaszewski at baylibre.com>
>
> This series enables the driver model for NAND on davinci da850 boards.
>
> The first patch is a simple tweak for an unnecessarily exported function.
>
> The second patch extends the NAND driver to support both legacy and
> driver-model users. For now we don't parse the device-tree as it's a
> bit complicated on da850, namely: the nand node is a child of the
> aemif node for which we don't have a driver in u-boot (unlike on linux
> where the aemif driver populates all its subnodes). In order for the
> nand device to be probed, we're adding a dummy node to the u-boot dts
> extensions with an appropriate compatible.
>
> Two last patches enable driver model for NAND on da850-lcdk and da850-evm.
> We don't enable the driver model in SPL as first: the patches enabling
> CONFIG_SPL_DM are still waiting to be merged, and second: the
> nand_spl_simple driver used by davinci SPL doesn't support driver model
> users. This is planned for future series once some basic support is
> merged.

What happens when the board is booting SPL from NAND?  Will it still
work as expected?  I know the da850-evm has at least one configuration
which this is intended to boot from NAND instead of the default SPI
flash.

adam

>
> Bartosz Golaszewski (4):
>   nand: davinci: make davinci_nand_init() static
>   nand: davinci: add support for driver model
>   davinci: omapl138-lcdk: enable driver model for NAND
>   davinci: da850-evm: enable driver model for NAND
>
>  arch/arm/dts/da850-evm-u-boot.dtsi            |  4 ++
>  arch/arm/dts/da850-lcdk-u-boot.dtsi           |  4 ++
>  arch/arm/include/asm/ti-common/davinci_nand.h |  2 -
>  configs/da850evm_defconfig                    |  1 +
>  configs/da850evm_direct_nor_defconfig         |  1 +
>  configs/da850evm_nand_defconfig               |  1 +
>  configs/omapl138_lcdk_defconfig               |  1 +
>  drivers/mtd/nand/raw/davinci_nand.c           | 48 ++++++++++++++++++-
>  include/configs/da850evm.h                    |  4 ++
>  include/configs/omapl138_lcdk.h               |  4 ++
>  10 files changed, 66 insertions(+), 4 deletions(-)
>
> --
> 2.21.0
>