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qspi: dra7x: enable quad mode read for ti-qspi driver 

This patch enables QUAD read mode for qspi to improve the
read performace while loading the binaries from qspi.

Signed-off-by: Ravi Babu <ravibabu@ti.com>
Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com>
This commit is contained in:
Ravi Babu 2015-02-11 18:54:29 -05:00 committed by Jagannadha Sutradharudu Teki
parent 81a66446c3
commit 46122960f0
2 changed files with 8 additions and 0 deletions
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7
drivers/spi/ti_qspi.c
View File

@ -109,10 +109,17 @@ static void ti_spi_setup_spi_register(struct ti_qspi_slave *qslave)
slave->op_mode_rx = 8;
#endif
#ifdef CONFIG_QSPI_QUAD_SUPPORT
memval |= (QSPI_CMD_READ_QUAD | QSPI_SETUP0_NUM_A_BYTES |
QSPI_SETUP0_NUM_D_BYTES_8_BITS |
QSPI_SETUP0_READ_QUAD | QSPI_CMD_WRITE |
QSPI_NUM_DUMMY_BITS);
#else
memval |= QSPI_CMD_READ | QSPI_SETUP0_NUM_A_BYTES |
QSPI_SETUP0_NUM_D_BYTES_NO_BITS |
QSPI_SETUP0_READ_NORMAL | QSPI_CMD_WRITE |
QSPI_NUM_DUMMY_BITS;
#endif
writel(memval, &qslave->base->setup0);
}

1
include/configs/dra7xx_evm.h
View File

@ -77,6 +77,7 @@
#define CONFIG_TI_SPI_MMAP
#define CONFIG_SF_DEFAULT_SPEED 48000000
#define CONFIG_DEFAULT_SPI_MODE SPI_MODE_3
#define CONFIG_QSPI_QUAD_SUPPORT
/*
* Default to using SPI for environment, etc.