On 02/22/2016 10:18 AM, Jagan Teki wrote:
Hi York,
On 15 February 2016 at 02:16, Jagan Teki jteki@openedev.com wrote:
Compared to previous patch series this series adds spi-nor core with spi-nor controller drivers are of "mtd uclass"
This is whole series for all spi-nor related changes, and while series tested on spansion spi-nor chip.
Know issue:
- arch/x86/lib/mrccache.c uses dm_spi_flash_ops, this need to fix.
Why this framework:
Some of the SPI device drivers at drivers/spi not a real spi controllers, Unlike normal/generic SPI controllers they operates only with SPI-NOR flash devices. these were technically termed as SPI-NOR controllers, Ex: drivers/spi/fsl_qspi.c
The problem with these were resides at drivers/spi is entire SPI layer becomes SPI-NOR flash oriented which is absolutely a wrong indication where SPI layer getting effected more with flash operations - So this SPI-NOR core will resolve this issue by separating all SPI-NOR flash operations from spi layer and creats a generic layer called SPI-NOR core which can be used to interact SPI-NOR to SPI driver interface layer and the SPI-NOR controller driver. The idea is taken from Linux spi-nor framework.
Before SPI-NOR:
cmd/sf.c
spi_flash.c
sf_probe.c
spi-uclass
spi drivers
SPI NOR chip
After SPI-NOR:
cmd/sf.c
spi-nor.c
m25p80.c spi nor drivers
spi-uclass SPI NOR chip
spi drivers
SPI NOR chip
SPI-NOR with MTD:
cmd/sf.c
MTD core
spi-nor.c
m25p80.c spi nor drivers
spi-uclass SPI NOR chip
spi drivers
SPI NOR chip
drivers/mtd/spi-nor/spi-nor.c: spi-nor core drivers/mtd/spi-nor/m25p80.c: mtd uclass driver which is an interface layer b/w spi-nor core drivers/spi drivers/mtd/spi-nor/fsl_qspi.c: spi-nor controller driver(mtd uclass)
Changes for v6:
- Fixed git bisectable issues, with buildman.
- Fixed spi-nor compilation issues
- newly designed changes.
Changes for v5:
- newly designed changes
Testing: $ git clone git://git.denx.de/u-boot-spi.git $ cd u-boot-spi $ git checkout -b spi-nor origin/spi-nor
Jagan Teki (76): mtd: Add m25p80 driver mtd: Add Kconfig entry for MTD_M25P80 mtd: Add SPI-NOR core support doc: device-tree-bindings: jedec,spi-nor mtd: spi-nor: Add Kconfig entry for MTD_SPI_NOR mtd: spi-nor: Add kconfig for MTD_SPI_NOR_USE_4K_SECTORS mtd: spi-nor: Add MTD support mtd: spi-nor: Add spi_nor support in m25p80 mtd: spi-nor: Add dm spi-nor probing mtd: spi-nor: Add spi_flash_probe for mtd-dm-spi-nor mtd: spi-nor: Add spi_flash_free for mtd-dm-spi-nor mtd: spi-nor: m25p80: Add spi_nor support for non-dm sf: Rename erase_size to erasesize sf: Use erasesize instead of sector_size sf: Use uint64_t for flash->size spi_flash: Use mtd_info operation for SPI-NOR spi_flash: Use spi_flash_t instead of struct spi_flash mtd: spi-nor: Move spi_read_then_write to spi layer spi: Rename spi_read_then_write to spi_write_then_read mtd: spi-nor: Rename SPI_FLASH_BAR to SPI_NOR_BAR mtd: spi-nor: Add Kconfig entry for SPI_NOR_BAR mtd: spi-nor: Copy spl files from drivers/mtd/spi mtd: spi-nor: spl: Follow ascending order of include headers mtd: spi-nor: fsl_espi_spl: Use mtd_info mtd: spi-nor: spi_spl_load: Use mtd_info mtd: spi-nor: Add flash vendor Kconfig entries arm: zynq: Kconfig: Select MTD uclass arm: zynq: Kconfig: Drop DM_SPI_FLASH defconfigs: zynq_microzed: Drop CONFIG_SPI_FLASH defconfig: zynq_microzed: Enable CONFIG_MTD_M25P80 defconfig: zynq_microzed: Enable CONFIG_MTD_SPI_NOR spl: Add CONFIG_SPL_SPI_NOR_SUPPORT configs: zynq: Use CONFIG_SPL_SPI_NOR_SUPPORT configs: zynq: Use CONFIG_SPL_MTD_SUPPORT mtd: spi-nor: Copy sf_dataflash mtd: dataflash: Remove unneeded spi data mtd: dataflash: Move flash id detection into jedec_probe mtd: dataflash: Fix add_dataflash return logic mtd: dataflash: Add UCLASS_MTD support mtd: dataflash: Use spi_write_then_read mtd: dataflash: Drop sf_internal.h mtd: dataflash: Minor cleanups mtd: Rename sf_dataflash.c to mtd_dataflash.c mtd: spi-nor: Add Kconfig entry for mtd_dataflash mtd: dataflash: Add MTD_DATAFLASH_WRITE_VERIFY mtd: spi-nor: Add kconfig MTD_DATAFLASH_WRITE_VERIFY configs: ls1021aqds: Drop DM_SPI_FLASH and DATAFLASH defconfig: ls1021aqds_qspi: Enable SPI-NOR defconfig: ls1021aqds_qspi: Enable CONFIG_MTD_DATAFLASH
Can you pls- test the dataflash changes? use u-boot-spi/spi-nor
I am trying to get there. I have a lot on my plate now. This may take a while.
York