[PATCH 0/4] mtd: nand: atmel: Rework DT representation of NFC/NAND

From: Boris Brezillon
Date: Thu Dec 04 2014 - 17:30:38 EST


While working on the EBI driver [1] I noticed that the relationship between
the NFC (NAND Flash Controller) and the NAND chip it is attached to would
make things harder to represent when moving the NAND node under the EBI bus
(another useless 'ranges' definition).

Actually this representation might be even more problematic if one wants
decide to connect two NAND chips on his sama5 based board, because the NFC
node is a child of the NAND chip node, and thus can only be attached to a
single NAND chip.

To address this problem the current series moves the NFC node outside of
the NAND chip device which then reference the NFC using the "atmel,nfc"

The series does not implement multi-chip support, but at least the new
representation should make it possible.

Best Regards,



Boris Brezillon (4):
mtd: nand: atmel: Rework driver to separate nfc and nand nodes
mtd: nand: atmel: Update DT documentation after splitting NFC and NAND
ARM: at91/dt: sama5: move NFC nodes outside of NAND nodes
ARM: at91/dt: sama5: move NAND nodes into board dts/dtsi

.../devicetree/bindings/mtd/atmel-nand.txt | 46 +++++++------
arch/arm/boot/dts/at91-sama5d3_xplained.dts | 18 ++++-
arch/arm/boot/dts/at91-sama5d4ek.dts | 16 ++++-
arch/arm/boot/dts/sama5d3.dtsi | 36 ++--------
arch/arm/boot/dts/sama5d3xcm.dtsi | 18 ++++-
arch/arm/boot/dts/sama5d4.dtsi | 36 ++--------
drivers/mtd/nand/atmel_nand.c | 76 +++++++++++++++++-----
7 files changed, 149 insertions(+), 97 deletions(-)


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