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| author | Suresh Gupta <suresh.gupta@nxp.com> | 2017-08-30 20:06:33 +0530 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2017-09-25 12:49:56 +0530 |
| commit | 1c631da459a82f4f82a063f5b4ff339ca5384d11 (patch) | |
| tree | 024549b066804b69daccbace8bd733abc1cc78b5 /drivers/spi/fsl_qspi.h | |
| parent | 994266bdff7903279b8e43ddbf220b04a4e1411f (diff) | |
| download | u-boot-1c631da459a82f4f82a063f5b4ff339ca5384d11.tar.gz u-boot-1c631da459a82f4f82a063f5b4ff339ca5384d11.tar.xz u-boot-1c631da459a82f4f82a063f5b4ff339ca5384d11.zip | |
spi: fsl_qspi: Add controller busy check before new spi operation
It is recommended to check either controller is free to take
new spi action. The IP_ACC and AHB_ACC bits indicates that
the controller is busy in IP or AHB mode respectively.
And the BUSY bit indicates that controller is currently
busy handling a transaction to an external flash device
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Diffstat (limited to 'drivers/spi/fsl_qspi.h')
| -rw-r--r-- | drivers/spi/fsl_qspi.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/spi/fsl_qspi.h b/drivers/spi/fsl_qspi.h index 6cb361018b..e468eb2529 100644 --- a/drivers/spi/fsl_qspi.h +++ b/drivers/spi/fsl_qspi.h @@ -105,6 +105,10 @@ struct fsl_qspi_regs { #define QSPI_RBCT_RXBRD_SHIFT 8 #define QSPI_RBCT_RXBRD_USEIPS (1 << QSPI_RBCT_RXBRD_SHIFT) +#define QSPI_SR_AHB_ACC_SHIFT 2 +#define QSPI_SR_AHB_ACC_MASK (1 << QSPI_SR_AHB_ACC_SHIFT) +#define QSPI_SR_IP_ACC_SHIFT 1 +#define QSPI_SR_IP_ACC_MASK (1 << QSPI_SR_IP_ACC_SHIFT) #define QSPI_SR_BUSY_SHIFT 0 #define QSPI_SR_BUSY_MASK (1 << QSPI_SR_BUSY_SHIFT) |