This is v2 series for past read/write instruction support. this series also includes zynq qspi driver patch set for knowing usage of these extended/quad read and write commnads.
http://comments.gmane.org/gmane.comp.boot-loaders.u-boot/150148 http://permalink.gmane.org/gmane.comp.boot-loaders.u-boot/167026 There is a bit discussion going on for supporting this: http://u-boot.10912.n7.nabble.com/PATCH-00-12-cmd-sf-Add-support-for-read-and-write-instructions-td143749.html This patchset adds support for extended and quad read and write commands support. It's been long back the actual idea came up, but i feel right now the sf framework is pretty nice to add these kinds of add ons. Concept: Initially I tried to add individual sf write/read commands to respective flash read/write commands, but later some discussion to mainline about this and changed the implementation. As Michal and me were trying to change this as like the "implementation will discover the fastest command by taking the supported commands from flash and a controller. Controller supported commands will always been a priority." Means I have added rd_cmd and wr_cmd params on spi_flash_id_params table. So the flash user may fill these with flash supported commands, and also spi controller use is also have rd_cmd and wr_cmd from spi.h, so the spi user will fill these with controller supported commands. and the resultent command is calculated based fastest commands by taking inputs from spi and flash, but spi(controller) has always a priority. Supported commands: - CMD_READ_ARRAY_SLOW - CMD_READ_ARRAY_FAST - CMD_READ_DUAL_OUTPUT_FAST - CMD_READ_DUAL_IO_FAST - CMD_READ_QUAD_OUTPUT_FAST - CMD_PAGE_PROGRAM - CMD_QUAD_PAGE_PROGRAM REQUEST FOR ALL SPI CODE CONTRIBUTORS/USERS, PLEASE TEST THESE CHANGES W.R.T YOUR HW IF POSSIBLE. Please let me know for any issues/concerns/questions. -- Thanks, Jagan. Jagannadha Sutradharudu Teki (10): sf: Remove spi_flash_do_alloc references sf: Add extended read commands support sf: Add quad read/write commands support sf: ops: Add configuration register writing support sf: Set quad enable bit support spi: Add zynq qspi controller driver zynq: Enable CONFIG_ZYNQ_QSPI zynq: Define CONFIG_SPI_FLASH_BAR spi: zynq_qspi: Add quad read/write commands support spi: zynq_qspi: Enable READ_CMD_FULL and WRITE_CMD_FULL arch/arm/include/asm/arch-zynq/hardware.h | 1 + drivers/mtd/spi/spi_flash_internal.h | 8 + drivers/mtd/spi/spi_flash_ops.c | 52 +++- drivers/mtd/spi/spi_flash_probe.c | 190 ++++++++----- drivers/spi/Makefile | 1 + drivers/spi/spi.c | 3 + drivers/spi/zynq_qspi.c | 454 ++++++++++++++++++++++++++++++ include/configs/zynq.h | 11 + include/spi.h | 4 + include/spi_flash.h | 84 +++--- 10 files changed, 690 insertions(+), 118 deletions(-) create mode 100644 drivers/spi/zynq_qspi.c -- 1.8.3 _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
