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538098281c
This patch for the DesignWare AHB Central Direct Memory Access Controller adds the dma protection control property: "snps,dma-protection-control" as well as the properties specific values defines into a new include file: include/dt-bindings/dma/dw-dmac.h Note: The protection control signals are one-to-one mapped to the AHB HPROT[1:3] signals for this controller. The HPROT0 (Data Access) is always hardwired to 1. Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>
14 lines
532 B
C
14 lines
532 B
C
/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
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#ifndef __DT_BINDINGS_DMA_DW_DMAC_H__
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#define __DT_BINDINGS_DMA_DW_DMAC_H__
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/*
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* Protection Control bits provide protection against illegal transactions.
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* The protection bits[0:2] are one-to-one mapped to AHB HPROT[3:1] signals.
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*/
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#define DW_DMAC_HPROT1_PRIVILEGED_MODE (1 << 0) /* Privileged Mode */
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#define DW_DMAC_HPROT2_BUFFERABLE (1 << 1) /* DMA is bufferable */
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#define DW_DMAC_HPROT3_CACHEABLE (1 << 2) /* DMA is cacheable */
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#endif /* __DT_BINDINGS_DMA_DW_DMAC_H__ */
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