diff --git a/firmware/target/arm/tms320dm320/spi-dm320.c b/firmware/target/arm/tms320dm320/spi-dm320.c
index e9a097b0ea..b671bdb2c1 100644
--- a/firmware/target/arm/tms320dm320/spi-dm320.c
+++ b/firmware/target/arm/tms320dm320/spi-dm320.c
@@ -33,8 +33,6 @@
 #define GIO_BL_ENABLE  (1<<13)
 #define GIO_LCD_ENABLE (1<<5)
 
-static struct mutex spi_mtx;
-
 struct SPI_info {
     volatile unsigned short *setreg;
     volatile unsigned short *clrreg;
@@ -75,8 +73,6 @@ int spi_block_transfer(enum SPI_target target,
                        const uint8_t *tx_bytes, unsigned int tx_size,
                              uint8_t *rx_bytes, unsigned int rx_size)
 {
-    mutex_lock(&spi_mtx);
-
     /* Enable the clock */
     bitset16(&IO_CLK_MOD2, CLK_MOD2_SIF0);
     
@@ -131,8 +127,6 @@ int spi_block_transfer(enum SPI_target target,
 
 void spi_init(void)
 {
-    mutex_init(&spi_mtx);
-
     /* Enable the clock */
     bitset16(&IO_CLK_MOD2, CLK_MOD2_SIF0);