Jagan Teki 25e4d94f45 spi: sifive: Fix QPP transfer ... The guessed reason is that the existing logic of filling tx fifo with data, rx fifo with NULL for tx transfer and filling rx fifo with data, tx fifo with NULL for rx transfer is not clear enough to support the Quad Page Program.     SiFive SPI controllers have specific sets of watermark registers and SPI I/O directions bits in order to program SPI controllers clear enough to support all sets of operating modes.     Here is the exact programing sequence that would follow on this patch and tested via SPI-NOR and MMC_SPI.     - set the frame format proto, endian - set the frame format dir, set it for tx and clear it for rx - TX transfer:   fill tx fifo with data.   wait for TX watermark bit to clear. - RX transfer:   fill tx fifo with 0xff.   write nbytes to rx watermark register   wait for rx watermark bit to clear.   read the rx fifo data. So, this patch adopts this program sequence and fixes the existing I/O direction bit. Cc: Vignesh R <vigneshr@ti.com> Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> Tested-by: Sagar Kadam <sagar.kadam@sifive.com>		2020-04-30 22:34:20 +05:30
..
altera_spi.c	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
atcspi200_spi.c	spi: atcspi200: Change include order	2019-05-09 00:42:55 +05:30
ath79_spi.c	common: Move clock functions into a new file	2020-01-17 13:27:29 -05:00
atmel_spi.c	dm: gpio: Allow control of GPIO uclass in SPL	2019-12-15 08:52:29 +08:00
atmel_spi.h	Revert "spi: atmel: Drop non-dm code"	2018-04-07 09:19:00 -04:00
atmel-quadspi.c	spi: atmel-quadspi: Add verbose debug facilities to monitor register accesses	2020-04-02 17:17:09 +05:30
bcm63xx_hsspi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
bcm63xx_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
bcmstb_spi.c	board: arm: Add support for Broadcom BCM7445	2018-07-10 16:55:57 -04:00
cadence_qspi_apb.c	spi: cadence-qspi: Add support for Cadence Octal SPI controller	2020-01-27 22:27:22 +05:30
cadence_qspi.c	spi: cadence-qspi: Move ref clock calculation to probe	2020-04-29 01:44:35 +05:30
cadence_qspi.h	spi: cadence-qspi: Add direct mode support	2020-01-27 22:27:22 +05:30
cf_spi.c	drivers: spi: cf_spi: convert to driver model	2019-05-24 08:11:57 -04:00
davinci_spi.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
designware_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
exynos_spi.c	common: Move get_ticks() function out of common.h	2019-12-02 18:23:13 -05:00
fsl_dspi.c	spi: fsl_dspi fix to stop extra transmissions	2019-04-12 11:24:24 +05:30
fsl_espi.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
fsl_qspi.c	spi: Transform the FSL QuadSPI driver to use the SPI MEM API	2020-04-29 01:44:35 +05:30
ich.c	spi: ich: Drop while loop in hardware sequencing erase case	2020-02-04 01:19:28 +08:00
ich.h	spi: ich: Add Apollo Lake support	2019-12-15 11:44:24 +08:00
Kconfig	spi: nxp_fspi: new driver for the FlexSPI controller	2020-01-27 22:27:21 +05:30
kirkwood_spi.c	km/spi: remove deprecated SPI flash driver code for KM Kirkwood boards	2019-07-11 10:58:03 +02:00
lpc32xx_ssp.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
Makefile	spi: nxp_fspi: new driver for the FlexSPI controller	2020-01-27 22:27:21 +05:30
meson_spifc.c	spi: Add Amlogic Meson SPI Flash Controller driver	2018-11-24 14:41:12 +05:30
mpc8xx_spi.c	spi, mpc8xx: migrate to DM_SPI	2018-12-03 10:44:10 -05:00
mpc8xxx_spi.c	spi: mpc8xxx_spi: fix missing dev_err definition	2020-04-24 16:40:09 -04:00
mscc_bb_spi.c	mips: spi: mscc: Add fast bitbang SPI driver	2019-01-16 13:56:43 +01:00
mt7621_spi.c	spi: mt7621-spi: restore default register value after each xfer	2019-10-25 17:20:44 +02:00
mtk_snfi_spi.c	spi: add spi-mem driver for MediaTek MT7629 SoC	2019-07-25 18:52:12 +05:30
mvebu_a3700_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
mxc_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
mxs_spi.c	common: Move ARM cache operations out of common.h	2019-12-02 18:24:58 -05:00
nxp_fspi.c	dm: core: Drop the inclusion of linux/compat.h in dm.h	2020-02-05 21:48:22 -07:00
omap3_spi.c	spi: omap3: fix set_wordlen() reading from incorrect address for CHCONF	2019-02-28 14:21:46 -05:00
pic32_spi.c	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
pl022_spi.c	dm: platform_data: spi: s/pl022_spi.h/spi_pl022.h	2018-11-27 21:06:46 +05:30
renesas_rpc_spi.c	spi: rpc: Add support for operation without clock framework	2019-05-07 05:41:32 +02:00
rk_spi.c	spi: rk: Limit transfers to (64K - 1) bytes	2019-12-27 17:47:26 +05:30
rk_spi.h	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
sandbox_spi.c	spi: Add support for memory-mapped flash	2019-11-03 07:20:26 +08:00
sh_qspi.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
sh_spi.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
sh_spi.h	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
soft_spi_legacy.c	spi: Remove unused spi_init	2018-11-27 21:06:53 +05:30
soft_spi.c	spi: soft_spi: Fix data abort if slave is not probed	2019-09-16 08:09:22 +05:30
spi-emul-uclass.c	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
spi-mem-nodm.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
spi-mem.c	spi: spi-mem: Add SPI_MEM_NO_DATA to the spi_mem_data_dir enum	2020-04-29 01:44:35 +05:30
spi-sifive.c	spi: sifive: Fix QPP transfer	2020-04-30 22:34:20 +05:30
spi-sunxi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
spi-uclass.c	mtd: spi-nor-core: Add octal mode support	2020-01-27 22:27:22 +05:30
spi.c	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
stm32_qspi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
stm32_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
tegra_spi.h	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
tegra20_sflash.c	common: Move get_ticks() function out of common.h	2019-12-02 18:23:13 -05:00
tegra20_slink.c	common: Move get_ticks() function out of common.h	2019-12-02 18:23:13 -05:00
tegra114_spi.c	common: Move get_ticks() function out of common.h	2019-12-02 18:23:13 -05:00
tegra210_qspi.c	qspi: t210: Use dev_read calls to get FDT data like base, freq	2020-04-02 14:30:02 -07:00
ti_qspi.c	dm: core: Require users of devres to include the header	2020-02-05 19:33:46 -07:00
uniphier_spi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00
xilinx_spi.c	spi: xilinx_spi: convert to livetree	2018-07-16 14:01:20 +05:30
zynq_qspi.c	spi: zynq_qspi: Fixed incorrect return value error	2018-06-25 14:13:57 +05:30
zynq_spi.c	common: Move get_ticks() function out of common.h	2019-12-02 18:23:13 -05:00
zynqmp_gqspi.c	dm: core: Create a new header file for 'compat' features	2020-02-05 19:33:46 -07:00