linux-fsl-qoriq - Freescale linux tree with Scalys patches

Age	Commit message (Collapse)	Author
2014-12-11	mtd: spi-nor: Add Freescale QuadSPI driver	Huang Shijie
	(0) What is the QuadSPI controller? The QuadSPI(Quad Serial Peripheral Interface) acts as an interface to one single or two external serial flash devices, each with up to 4 bidirectional data lines. (1) The QuadSPI controller is driven by the LUT(Look-up Table) registers. The LUT registers are a look-up-table for sequences of instructions. A valid sequence consists of four LUT registers. (2) The definition of the LUT register shows below: --------------------------------------------------- \| INSTR1 \| PAD1 \| OPRND1 \| INSTR0 \| PAD0 \| OPRND0 \| --------------------------------------------------- There are several types of INSTRx, such as: CMD : the SPI NOR command. ADDR : the address for the SPI NOR command. DUMMY : the dummy cycles needed by the SPI NOR command. .... There are several types of PADx, such as: PAD1 : use a singe I/O line. PAD2 : use two I/O lines. PAD4 : use quad I/O lines. .... (3) Test this driver with the JFFS2 and UBIFS: For jffs2: ------------- #flash_eraseall /dev/mtd0 #mount -t jffs2 /dev/mtdblock0 tmp #bonnie++ -d tmp -u 0 -s 10 -r 5 For ubifs: ------------- #flash_eraseall /dev/mtd0 #ubiattach /dev/ubi_ctrl -m 0 #ubimkvol /dev/ubi0 -N test -m #mount -t ubifs ubi0:test tmp #bonnie++ -d tmp -u 0 -s 10 -r 5 Signed-off-by: Huang Shijie <b32955@freescale.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Change-Id: Ie32163e49eb62af82bf311e9165363a2f8880841 Reviewed-on: http://git.am.freescale.net:8181/15509 Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com> Tested-by: Zhengxiong Jin <Jason.Jin@freescale.com>
2014-12-11	mtd: spi-nor: add the framework for SPI NOR	Huang Shijie
	This patch cloned most of the m25p80.c. In theory, it 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 New APIs: spi_nor_scan: used to scan a spi-nor flash. Signed-off-by: Huang Shijie <b32955@freescale.com> Acked-by: Marek Vasut <marex@denx.de> [Brian: rebased to include additional m25p_ids[] entry] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Change-Id: I7c22c4c83350eac8c325ccd8292450fde79bb069 Reviewed-on: http://git.am.freescale.net:8181/15507 Reviewed-by: Zhengxiong Jin <Jason.Jin@freescale.com> Tested-by: Zhengxiong Jin <Jason.Jin@freescale.com>