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Subject[PATCH 0/2] rewrite mtk-quadspi spi-nor driver with spi-mem
This patchset adds a spi-mem driver for Mediatek SPI-NOR controller,
which already has limited support by mtk-quadspi. For benefits of
this replacement, please check commit message of the 1st patch.

To keep patchset small for easier reviewing, there will be 3 patchsets
including this one.
1. add the new driver, which is this patchset.
2. update existing dts for the new driver:
spi-max-frequency is missing in current mtk-quadspi binding. Old
driver parses child node manually so it doesn't need this, but
new spi-mem driver is probed via spi subsystem which requires the
presence of spi-max-frequency. Since this doesn't break old driver
support, I'll send this separately as a standalone patch.
3. removing the old driver. I'll create this commit after 1 and 2 are
applied to avoid possible rebasing due to any changes in the old

Chuanhong Guo (2):
spi: add support for mediatek spi-nor controller
dt-bindings: convert mtk-quadspi binding doc for spi-mtk-nor

.../mtk-quadspi.txt => spi/spi-mtk-nor.txt} | 34 +-
drivers/spi/Kconfig | 10 +
drivers/spi/Makefile | 1 +
drivers/spi/spi-mtk-nor.c | 689 ++++++++++++++++++
4 files changed, 715 insertions(+), 19 deletions(-)
rename Documentation/devicetree/bindings/{mtd/mtk-quadspi.txt => spi/spi-mtk-nor.txt} (62%)
create mode 100644 drivers/spi/spi-mtk-nor.c


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