diff --git a/src/platform/ace30/include/platform/lib/dma.h b/src/platform/ace30/include/platform/lib/dma.h
deleted file mode 100644
index 48a37b2b635a..000000000000
--- a/src/platform/ace30/include/platform/lib/dma.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright(c) 2022-2024 Intel Corporation.
- */
-
-#ifdef __SOF_LIB_DMA_H__
-
-#ifndef __PLATFORM_LIB_DMA_H__
-#define __PLATFORM_LIB_DMA_H__
-
-/* max number of supported DMA channels */
-#define PLATFORM_MAX_DMA_CHAN	9
-
-/* number of supported DMACs */
-#define PLATFORM_NUM_DMACS	6
-
-#endif /* __PLATFORM_LIB_DMA_H__ */
-
-#else
-
-#error "This file shouldn't be included from outside of sof/lib/dma.h"
-
-#endif /* __SOF_LIB_DMA_H__ */
diff --git a/src/platform/lunarlake/include/platform/lib/dma.h b/src/platform/lunarlake/include/platform/lib/dma.h
deleted file mode 100644
index c820f6e2c9e9..000000000000
--- a/src/platform/lunarlake/include/platform/lib/dma.h
+++ /dev/null
@@ -1,20 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright(c) 2023 Intel Corporation. All rights reserved.
- */
-
-#ifdef __SOF_LIB_DMA_H__
-
-#ifndef __PLATFORM_LIB_DMA_H__
-#define __PLATFORM_LIB_DMA_H__
-
-/* max number of supported DMA channels */
-#define PLATFORM_MAX_DMA_CHAN	11
-
-#endif /* __PLATFORM_LIB_DMA_H__ */
-
-#else
-
-#error "This file shouldn't be included from outside of sof/lib/dma.h"
-
-#endif /* __SOF_LIB_DMA_H__ */
diff --git a/src/platform/meteorlake/include/platform/lib/dma.h b/src/platform/meteorlake/include/platform/lib/dma.h
deleted file mode 100644
index ca10b4937c99..000000000000
--- a/src/platform/meteorlake/include/platform/lib/dma.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright(c) 2022 Intel Corporation. All rights reserved.
- */
-
-#ifdef __SOF_LIB_DMA_H__
-
-#ifndef __PLATFORM_LIB_DMA_H__
-#define __PLATFORM_LIB_DMA_H__
-
-/* max number of supported DMA channels */
-#define PLATFORM_MAX_DMA_CHAN	9
-
-/* number of supported DMACs */
-#define PLATFORM_NUM_DMACS	6
-
-#endif /* __PLATFORM_LIB_DMA_H__ */
-
-#else
-
-#error "This file shouldn't be included from outside of sof/lib/dma.h"
-
-#endif /* __SOF_LIB_DMA_H__ */
diff --git a/src/platform/tigerlake/include/platform/lib/dma.h b/src/platform/tigerlake/include/platform/lib/dma.h
deleted file mode 100644
index 4dfae664ae11..000000000000
--- a/src/platform/tigerlake/include/platform/lib/dma.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* SPDX-License-Identifier: BSD-3-Clause
- *
- * Copyright(c) 2017 Intel Corporation. All rights reserved.
- *
- * Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
- *         Keyon Jie <yang.jie@linux.intel.com>
- *         Rander Wang <rander.wang@intel.com>
- */
-
-#ifdef __SOF_LIB_DMA_H__
-
-#ifndef __PLATFORM_LIB_DMA_H__
-#define __PLATFORM_LIB_DMA_H__
-
-/* number of supported DMACs */
-#define PLATFORM_NUM_DMACS	6
-
-/* max number of supported DMA channels */
-#define PLATFORM_MAX_DMA_CHAN	9
-
-/* available DMACs */
-#define DMA_GP_LP_DMAC0		0
-#define DMA_GP_LP_DMAC1		1
-#define DMA_GP_HP_DMAC0		2
-#define DMA_GP_HP_DMAC1		3
-#define DMA_HOST_IN_DMAC	4
-#define DMA_HOST_OUT_DMAC	5
-#define DMA_LINK_IN_DMAC	6
-#define DMA_LINK_OUT_DMAC	7
-
-/* mappings - TODO improve API to get type */
-#define DMA_ID_DMAC0	DMA_HOST_IN_DMAC
-#define DMA_ID_DMAC1	DMA_GP_LP_DMAC0
-#define DMA_ID_DMAC2	DMA_HOST_OUT_DMAC
-#define DMA_ID_DMAC3	DMA_GP_HP_DMAC0
-#define DMA_ID_DMAC4	DMA_GP_LP_DMAC1
-#define DMA_ID_DMAC5	DMA_GP_HP_DMAC1
-#define DMA_ID_DMAC6	DMA_LINK_IN_DMAC
-#define DMA_ID_DMAC7	DMA_LINK_OUT_DMAC
-
-/* handshakes */
-#define DMA_HANDSHAKE_DMIC_CH0	0
-#define DMA_HANDSHAKE_DMIC_CH1	1
-#define DMA_HANDSHAKE_SSP0_TX	2
-#define DMA_HANDSHAKE_SSP0_RX	3
-#define DMA_HANDSHAKE_SSP1_TX	4
-#define DMA_HANDSHAKE_SSP1_RX	5
-#define DMA_HANDSHAKE_SSP2_TX	6
-#define DMA_HANDSHAKE_SSP2_RX	7
-#define DMA_HANDSHAKE_SSP3_TX	8
-#define DMA_HANDSHAKE_SSP3_RX	9
-#define DMA_HANDSHAKE_SSP4_TX	10
-#define DMA_HANDSHAKE_SSP4_RX	11
-#define DMA_HANDSHAKE_SSP5_TX	12
-#define DMA_HANDSHAKE_SSP5_RX	13
-
-#define dma_chan_irq(dma, chan) dma_irq(dma)
-#define dma_chan_irq_name(dma, chan) dma_irq_name(dma)
-
-#endif /* __PLATFORM_LIB_DMA_H__ */
-
-#else
-
-#error "This file shouldn't be included from outside of sof/lib/dma.h"
-
-#endif /* __SOF_LIB_DMA_H__ */