+Mark Hi Yogesh, On Mon, 15 Oct 2018 12:13:57 +0000 Yogesh Narayan Gaur <yogeshnarayan.gaur@xxxxxxx> wrote: > Add support for octal mode IO data transfer. > Micron flash, mt35xu512aba, supports octal mode data transfer and > NXP FlexSPI controller supports 8 data lines for data transfer (Rx/Tx). > > Patch series > * Add support for octal mode flags and parsing of same in spi driver. > * Add parsing logic for spi-mem framework and m25p80.c device file. > * Add opcodes for octal I/O commands in spi-nor framework, Read and Write proto for (1-1-8/1-8-8) mode. > Opcodes are added as per octal data IO commands required for mt35xu512aba [1] flash. > * Add mode bit required for octal mode in nxp-fspi driver [2]. > * Define binding property 'spi-rx/tx-bus-width' for LX2160ARDB target [2]. > > Cherry pick below 2 patches (from: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git): > c639f871febe6667d9afce28108c634e5636c735 spi: spi-mem: Fix inverted logic in op sanity check > db122eb8a749a1eff038f9a282c620ab16c4be1d spi: spi-mem: Add extra sanity checks on the op param > > Tested on LX2160ARDB target with nxp-fspi driver, below are > Read performance number of 1-1-1 and 1-1-8 read protocol. > > root@lxxx:~# cat /proc/mtd > dev: size erasesize name > mtd0: 04000000 00001000 "spi0.0" > mtd1: 04000000 00001000 "spi0.1" > root@lxxx:~# time mtd_debug read /dev/mtd0 0x0 0x1000000 0read > Copied 16777216 bytes from address 0x00000000 in flash to 0read > > real 0m2.792s > user 0m0.000s > sys 0m2.790s > root@lxxx:~# time mtd_debug read /dev/mtd1 0x0 0x1000000 0read > Copied 16777216 bytes from address 0x00000000 in flash to 0read > > real 0m0.441s > user 0m0.000s > sys 0m0.440s > root@ls1012ardb:~# > > Flash device MTD0 configured in 1-1-1 protocol. > Flash device MTD1 configured in 1-1-8 protocol. > > [1] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=70384 > [2] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=70210 > > Yogesh Gaur (7): > spi: add support for octal I/O data transfer I guess you've followed the discussion with Mark on the "mtd: spi-nor: Proposal for 8-8-8 mode support" series. Can you please send a new version of this patchset after adding patching spi_setup() to support octal mode? Thanks, Boris
