diff --git a/src/include/spi-generic.h b/src/include/spi-generic.h
index d252c32ab0..5642abae09 100644
--- a/src/include/spi-generic.h
+++ b/src/include/spi-generic.h
@@ -143,16 +143,6 @@ void spi_release_bus(struct spi_slave *slave);
 int  spi_xfer(struct spi_slave *slave, const void *dout, unsigned int bitsout,
 		void *din, unsigned int bitsin);
 
-/*-----------------------------------------------------------------------
- * Determine if a SPI chipselect is valid.
- * This function is provided by the board if the low-level SPI driver
- * needs it to determine if a given chipselect is actually valid.
- *
- * Returns: 1 if bus:cs identifies a valid chip on this board, 0
- * otherwise.
- */
-int  spi_cs_is_valid(unsigned int bus, unsigned int cs);
-
 /*-----------------------------------------------------------------------
  * Activate a SPI chipselect.
  * This function is provided by the board code when using a driver
@@ -171,14 +161,6 @@ void spi_cs_activate(struct spi_slave *slave);
  */
 void spi_cs_deactivate(struct spi_slave *slave);
 
-/*-----------------------------------------------------------------------
- * Set transfer speed.
- * This sets a new speed to be applied for next spi_xfer().
- *   slave:	The SPI slave
- *   hz:	The transfer speed
- */
-void spi_set_speed(struct spi_slave *slave, uint32_t hz);
-
 /*-----------------------------------------------------------------------
  * Write 8 bits, then read 8 bits.
  *   slave:	The SPI slave we're communicating with
diff --git a/src/soc/intel/baytrail/spi.c b/src/soc/intel/baytrail/spi.c
index 04e5f04553..9a45d24ab5 100644
--- a/src/soc/intel/baytrail/spi.c
+++ b/src/soc/intel/baytrail/spi.c
@@ -266,12 +266,6 @@ static void ich_set_bbar(uint32_t minaddr)
 	writel_(ichspi_bbar, cntlr.bbar);
 }
 
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	printk(BIOS_DEBUG, "spi_cs_is_valid used but not implemented\n");
-	return 0;
-}
-
 struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 		unsigned int max_hz, unsigned int mode)
 {
diff --git a/src/soc/samsung/exynos5420/spi.c b/src/soc/samsung/exynos5420/spi.c
index e448096966..54c685f7e4 100644
--- a/src/soc/samsung/exynos5420/spi.c
+++ b/src/soc/samsung/exynos5420/spi.c
@@ -134,11 +134,6 @@ struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 	return &eslave->slave;
 }
 
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	return bus > 0 && bus < 3;
-}
-
 void spi_cs_activate(struct spi_slave *slave)
 {
 	struct exynos_spi *regs = to_exynos_spi(slave)->regs;
diff --git a/src/southbridge/intel/bd82x6x/spi.c b/src/southbridge/intel/bd82x6x/spi.c
index 09169b1bc8..47dc3dc101 100644
--- a/src/southbridge/intel/bd82x6x/spi.c
+++ b/src/southbridge/intel/bd82x6x/spi.c
@@ -279,12 +279,6 @@ static void ich_set_bbar(uint32_t minaddr)
 	writel_(ichspi_bbar, cntlr.bbar);
 }
 
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	printk(BIOS_DEBUG, "spi_cs_is_valid used but not implemented\n");
-	return 0;
-}
-
 struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 		unsigned int max_hz, unsigned int mode)
 {
diff --git a/src/southbridge/intel/lynxpoint/spi.c b/src/southbridge/intel/lynxpoint/spi.c
index eaa17d5e21..1a324696f4 100644
--- a/src/southbridge/intel/lynxpoint/spi.c
+++ b/src/southbridge/intel/lynxpoint/spi.c
@@ -266,12 +266,6 @@ static void ich_set_bbar(uint32_t minaddr)
 	writel_(ichspi_bbar, cntlr.bbar);
 }
 
-int spi_cs_is_valid(unsigned int bus, unsigned int cs)
-{
-	printk(BIOS_DEBUG, "spi_cs_is_valid used but not implemented\n");
-	return 0;
-}
-
 struct spi_slave *spi_setup_slave(unsigned int bus, unsigned int cs,
 		unsigned int max_hz, unsigned int mode)
 {