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The UDMA-P is intended to perform similar (but significantly upgraded) functions as the packet-oriented DMA used on previous SoC devices. The UDMA-P module supports the transmission and reception of various packet types. The UDMA-P also supports acting as both a UTC and UDMA-C for its internal channels. Channels in the UDMA-P can be configured to be either Packet-Based or Third-Party channels on a channel by channel basis. The initial driver supports: - MEM_TO_MEM (TR mode) - DEV_TO_MEM (Packet mode) - MEM_TO_DEV (Packet mode) Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Vignesh R <vigneshr@ti.com>
32 lines
668 B
C
32 lines
668 B
C
// SPDX-License-Identifier: GPL-2.0+
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/*
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* Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com
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*/
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#ifndef __DT_TI_UDMA_H
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#define __DT_TI_UDMA_H
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#define UDMA_TR_MODE 0
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#define UDMA_PKT_MODE 1
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#define UDMA_DIR_TX 0
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#define UDMA_DIR_RX 1
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#define PSIL_STATIC_TR_NONE 0
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#define PSIL_STATIC_TR_XY 1
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#define PSIL_STATIC_TR_MCAN 2
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#define UDMA_PDMA_TR_XY(id) \
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ti,psil-config##id { \
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linux,udma-mode = <UDMA_TR_MODE>; \
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statictr-type = <PSIL_STATIC_TR_XY>; \
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}
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#define UDMA_PDMA_PKT_XY(id) \
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ti,psil-config##id { \
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linux,udma-mode = <UDMA_PKT_MODE>; \
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statictr-type = <PSIL_STATIC_TR_XY>; \
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}
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#endif /* __DT_TI_UDMA_H */
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