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

Bartosz Golaszewski brgl at bgdev.pl
Thu Jun 6 15:49:56 UTC 2019

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

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(-)


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