spi: Fixes for v7.2

Just a couple of small bits for the SpacemiT driver - one small fix, and
 a new compatible in the DT binding.
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Merge tag 'spi-fix-v7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "Just a couple of small bits for the SpacemiT driver - one small fix,
  and a new compatible in the DT binding"

* tag 'spi-fix-v7.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: dt-bindings: spacemit: add K3 SPI compatible
  spi: spacemit: Correct TX FIFO slot calculation

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

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