dt-bindings: dma: fsl-edma: Add fsl-edma.h to prevent hardcoding in dts

Introduce a common dt-bindings header file, fsl-edma.h, shared between
the driver and dts files. This addition aims to eliminate hardcoded values
in dts files, promoting maintainability and consistency.

DTS header file not support BIT() macro yet. Directly use 2^n number.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20231114154824.3617255-3-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/include/dt-bindings/dma/fsl-edma.h b/include/dt-bindings/dma/fsl-edma.h
new file mode 100644 (file)
index 0000000..fd11478
--- /dev/null
+++ b/include/dt-bindings/dma/fsl-edma.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
+
+#ifndef _FSL_EDMA_DT_BINDING_H_
+#define _FSL_EDMA_DT_BINDING_H_
+
+/* Receive Channel */
+#define FSL_EDMA_RX            0x1
+
+/* iMX8 audio remote DMA */
+#define FSL_EDMA_REMOTE                0x2
+
+/* FIFO is continue memory region */
+#define FSL_EDMA_MULTI_FIFO    0x4
+
+/* Channel need stick to even channel */
+#define FSL_EDMA_EVEN_CH       0x8
+
+/* Channel need stick to odd channel */
+#define FSL_EDMA_ODD_CH                0x10
+
+#endif