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>

diff --git a/drivers/spi/ti_qspi.c b/drivers/spi/ti_qspi.c
index 857b604..3356c0f 100644 (file)
--- a/drivers/spi/ti_qspi.c
+++ b/drivers/spi/ti_qspi.c
@@ -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);
 }

diff --git a/include/configs/dra7xx_evm.h b/include/configs/dra7xx_evm.h
index dee2b11..8fe0e6c 100644 (file)
--- a/include/configs/dra7xx_evm.h
+++ b/include/configs/dra7xx_evm.h
@@ -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.