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caf110798c
u-boot-brain/drivers/spi
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Sean Anderson caf110798c spi: dw: Fix driving MOSI low while recieving 
The resting state of MOSI is high when nothing is driving it. If we drive
it low while recieving, it looks like we are transmitting 0x00 instead of
transmitting nothing. This can confuse slaves (like SD cards) which allow
new commands to be sent over MOSI while they are returning data over MISO.
The return of MOSI from 0 to 1 at the end of recieving a byte can look like
a start bit and a transmission bit to an SD card. This will cause the card
to become out-of-sync with the SPI device, as it thinks the device has
already started transmitting two bytes of a new command. The mmc-spi driver
will not detect the R1 response from the SD card, since it is sent too
early, and offset by two bits. This patch fixes transfer errors when using
SD cards with dw spi.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
2020-12-18 16:16:36 +05:30
..
altera_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
atcspi200_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
ath79_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
atmel_spi.c treewide: convert (void *)devfdt_get_addr() to dev_read_addr_ptr() 2020-07-25 14:46:57 -06:00
atmel_spi.h spi: atmel: Remove nondm code 2020-06-11 15:14:04 +05:30
atmel-quadspi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
bcm63xx_hsspi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
bcm63xx_spi.c common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
bcmstb_spi.c board: arm: Add support for Broadcom BCM7445 2018-07-10 16:55:57 -04:00
cadence_qspi_apb.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
cadence_qspi.c common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
cadence_qspi.h spi: cadence-qspi: Add direct mode support 2020-01-27 22:27:22 +05:30
cf_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
davinci_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
designware_spi.c spi: dw: Fix driving MOSI low while recieving 2020-12-18 16:16:36 +05:30
exynos_spi.c treewide: convert (void *)devfdt_get_addr() to dev_read_addr_ptr() 2020-07-25 14:46:57 -06:00
fsl_dspi.c Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq 2020-07-27 15:18:15 -04:00
fsl_espi.c dm: spi: Convert Freescale ESPI driver to driver model 2020-06-18 21:47:08 +05:30
fsl_qspi.c spi: fsl_qspi: Include device_compat.h 2020-10-16 09:44:27 -04:00
ich.c x86: apl: Enable SPI flash in TPL with APL_SPI_FLASH_BOOT 2020-10-29 14:42:18 -06:00
ich.h common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
Kconfig spi: Add Qualcomm QUP SPI controller driver 2020-10-22 09:54:54 -04:00
kirkwood_spi.c treewide: convert (void *)devfdt_get_addr() to dev_read_addr_ptr() 2020-07-25 14:46:57 -06:00
Makefile spi: Add Qualcomm QUP SPI controller driver 2020-10-22 09:54:54 -04:00
meson_spifc.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
mpc8xx_spi.c common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00
mpc8xxx_spi.c spi: mpc8xxx_spi.c: fix cs activate/deactivate 2020-09-22 11:05:32 -04:00
mscc_bb_spi.c spi: Drop duplicate dm.h inclusion 2020-08-03 22:19:54 -04:00
mt7621_spi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
mtk_snfi_spi.c treewide: convert (void *)devfdt_get_addr() to dev_read_addr_ptr() 2020-07-25 14:46:57 -06:00
mvebu_a3700_spi.c spi: mvebu_a3700_spi: add support for cs-gpios 2020-10-14 07:55:56 +02:00
mxc_spi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
mxs_spi.c drivers: avoid using aliases on drivers when OF_PLATDATA is enabled 2020-07-28 19:30:39 -06:00
nxp_fspi.c spi: nxp_fspi: Include device_compat.h 2020-10-16 09:44:27 -04:00
octeon_spi.c spi: octeon_spi: Use a fixed 100MHz input clock on Octeon TX2 2020-10-16 13:55:04 +02:00
omap3_spi.c spi: omap3_spi: Read platform data in ofdata_to_platdata() 2020-09-15 18:51:53 +05:30
pic32_spi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -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: renesas_rpc_spi: Add R-Car Gen3 and RZ/G2 fallback compatibility string 2020-10-20 12:56:46 +02:00
rk_spi.c drivers: spi: rk_spi: Add support for RK3328 2020-07-22 20:22:03 +08:00
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 dm: acpi: Enhance acpi_get_name() 2020-07-17 14:32:24 +08:00
sh_qspi.c spi: Convert CONFIG_DM_SPI* to CONFIG_$(SPL_TPL_)DM_SPI* 2020-06-29 13:34:43 -04:00
soft_spi.c spi: add support for all spi modes with soft spi 2020-07-09 20:58:06 +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 common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
spi-mem.c mtd: spi-mem: Drop dm.h header file 2020-08-03 22:19:54 -04:00
spi-qup.c spi: Add Qualcomm QUP SPI controller driver 2020-10-22 09:54:54 -04:00
spi-sifive.c mtd: spi-mem: Drop dm.h header file 2020-08-03 22:19:54 -04:00
spi-sunxi.c spi: sunxi: Fix not calling dev_err with a device 2020-09-30 08:53:45 -04:00
spi-uclass.c spi: migrate trace to dev and log macro in spi uclass 2020-12-18 16:16:36 +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 mtd: spi-mem: Drop dm.h header file 2020-08-03 22:19:54 -04:00
stm32_spi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
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 treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
tegra20_slink.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
tegra114_spi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
tegra210_qspi.c common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
ti_qspi.c treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
uniphier_spi.c treewide: convert devfdt_get_addr_ptr() to dev_read_addr_ptr() 2020-08-22 08:53:37 -06:00
xilinx_spi.c spi: xilinx_spi: remove unused local variable 2020-10-27 08:13:32 +01:00
zynq_qspi.c spi: zynq_qspi: Add function description 2020-10-27 08:13:33 +01:00
zynq_spi.c spi: zynq_spi: Use clk subsystem to get reference spi clk 2020-10-27 08:13:32 +01:00
zynqmp_gqspi.c spi: zynqmp_gqspi: Fix not calling dev_err with a device 2020-09-30 08:53:47 -04:00