On Monday, February 24, 2014 at 11:37:34 AM, Huang Shijie wrote: > 1.) Why add a new framework for SPI NOR? > The SPI-NOR controller such as Freescale's Quadspi controller is working > in a different way from the SPI bus. It should knows the NOR commands to > find the right LUT sequence. Unfortunately, the current code can not meet > this requirement. > > 2.) How does this patch set do? > This patch set adds a new spi-nor layer. > Before this patch, the layer is like: > > MTD > ------------------------ > m25p80 > ------------------------ > spi bus driver > ------------------------ > SPI NOR chip > > After this patch, the layer is like: > MTD > ------------------------ > spi-nor > ------------------------ > m25p80 > ------------------------ > spi bus driver > ------------------------ > SPI NOR chip > > With the spi-nor controller driver(Freescale Quadspi), it looks like: > MTD > ------------------------ > spi-nor > ------------------------ > fsl-quadspi > ------------------------ > SPI NOR chip > > 3.) more details > This patch set adds a new data structrue spi_nor{}, clones most the > common code to spi-nor.c. Add spi_nor_xfer_cfg {} for the fundamental > primitives: read_xfer/write_xfer. > > Make the m25p80.c/fsl_quaspi.c use the new APIs. > > 4.) Change log: > v4 --> v5: > [1] rebase the patch set on the l2-mtd tree. > [2] fixed bugs in the fsl-quadspi driver. > [3] tested the fsl-quadspi with imx6sx board. It's starting to take a really nice shape, I really like it :) -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html