diff --git a/sys/dev/spibus/spi.h b/sys/dev/spibus/spi.h
--- a/sys/dev/spibus/spi.h
+++ b/sys/dev/spibus/spi.h
@@ -34,9 +34,13 @@
 	uint32_t tx_data_sz;
 	void	*rx_data;
 	uint32_t rx_data_sz;
+	uint32_t flags;
 };
 #define	SPI_COMMAND_INITIALIZER	{ 0 }
 
+#define	SPI_FLAG_KEEP_CS	0x1		/* Keep chip select asserted */
+#define	SPI_FLAG_NO_SLEEP	0x2		/* Prevent driver from sleeping (use polling) */
+
 #define	SPI_CHIP_SELECT_HIGH	0x1		/* Chip select high (else low) */
 
 #ifdef FDT
diff --git a/sys/dev/spibus/spibus.c b/sys/dev/spibus/spibus.c
--- a/sys/dev/spibus/spibus.c
+++ b/sys/dev/spibus/spibus.c
@@ -146,6 +146,9 @@
 	case SPIBUS_IVAR_CLOCK:
 		*(uint32_t *)result = devi->clock;
 		break;
+	case SPIBUS_IVAR_CS_DELAY:
+		*(uint32_t *)result = devi->cs_delay;
+		break;
 	}
 	return (0);
 }
@@ -174,6 +177,9 @@
 			return (EINVAL);
 		devi->mode = (uint32_t)value;
 		break;
+	case SPIBUS_IVAR_CS_DELAY:
+		devi->cs_delay = (uint32_t)value;
+		break;
 	default:
 		return (EINVAL);
 	}
diff --git a/sys/dev/spibus/spibusvar.h b/sys/dev/spibus/spibusvar.h
--- a/sys/dev/spibus/spibusvar.h
+++ b/sys/dev/spibus/spibusvar.h
@@ -43,6 +43,7 @@
 	uint32_t	cs;
 	uint32_t	mode;
 	uint32_t	clock;
+	uint32_t	cs_delay;
 	struct resource_list	rl;
 };
 
@@ -52,6 +53,7 @@
 	SPIBUS_IVAR_CS,		/* chip select that we're on */
 	SPIBUS_IVAR_MODE,	/* SPI mode (0-3) */
 	SPIBUS_IVAR_CLOCK,	/* maximum clock freq for device */
+	SPIBUS_IVAR_CS_DELAY,	/* delay in microseconds after toggling chip select */
 };
 
 #define SPIBUS_ACCESSOR(A, B, T)					\
@@ -71,6 +73,7 @@
 SPIBUS_ACCESSOR(cs,		CS,		uint32_t)
 SPIBUS_ACCESSOR(mode,		MODE,		uint32_t)
 SPIBUS_ACCESSOR(clock,		CLOCK,		uint32_t)
+SPIBUS_ACCESSOR(cs_delay,		CS_DELAY,		uint32_t)
 
 extern driver_t spibus_driver;
 extern driver_t ofw_spibus_driver;