diff --git a/Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml b/Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml
index e82c7f8d0b98..5d86cc87e4fb 100644
--- a/Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml
+++ b/Documentation/devicetree/bindings/spi/spacemit,k1-spi.yaml
@@ -24,7 +24,11 @@ allOf:
 
 properties:
   compatible:
-    const: spacemit,k1-spi
+    oneOf:
+      - const: spacemit,k1-spi
+      - items:
+          - const: spacemit,k3-spi
+          - const: spacemit,k1-spi
 
   reg:
     maxItems: 1
diff --git a/drivers/spi/spi-spacemit-k1.c b/drivers/spi/spi-spacemit-k1.c
index 215fe66d27b4..0faf7ffed676 100644
--- a/drivers/spi/spi-spacemit-k1.c
+++ b/drivers/spi/spi-spacemit-k1.c
@@ -494,8 +494,8 @@ static bool k1_spi_write(struct k1_spi_driver_data *drv_data, u32 val)
 {
 	unsigned int count;
 
-	/* Get the number of open slots in the FIFO; zero means all */
-	count = FIELD_GET(SSP_STATUS_TFL, val) ? : K1_SPI_FIFO_SIZE;
+	/* Get the number of free slots in the FIFO */
+	count = K1_SPI_FIFO_SIZE - FIELD_GET(SSP_STATUS_TFL, val);
 
 	/*
 	 * Limit how much we try to send at a time, to reduce the