Lines Matching +full:dma +full:- +full:enabled

2 # SPDX-License-Identifier: Apache-2.0
5   STM32 DMA controller (V2bis) for the stm32F0, stm32F1 and stm32L1 soc families
7   This DMA controller includes several channels with different requests.
8   All the requests ar ORed before entering the DMA, so that only one request
9   must be enabled at a time.
10   DMA clients connected to the STM32 DMA controller must use the format
11   described in the dma.txt file, using a 2-cell specifier for each
12   channel: a phandle to the DMA controller plus the following four integer cells:
13     1. channel: the dma stream from 1 to <dma-requests>
14     2. channel-config: A 32bit mask specifying the DMA channel configuration
15     A name custom DMA flags for channel configuration is used
17       -bit 5 : DMA  cyclic mode config
20       -bit 6-7 : Direction (see dma.h)
25       -bit 9 : Peripheral Increment Address
28       -bit 10 : Memory Increment Address
31       -bit 11-12 : Peripheral data size
33                0x1: STM32_DMA_PERIPH_16BITS: Half-word (16 bits)
36       -bit 13-14 : Memory data size
38                0x1: STM32_DMA_MEM_16BITS: Half-word (16 bits)
41       -bit 15: Reserved
42       -bit 16-17 : Priority level
48   Example of dma usual combination for peripheral transfer
52   Example of dma node for stm32f103
53      dma1: dma-controller@40020400 {
54          compatible = "st,stm32-dma-v2bis";
56          dma-requests = <7>;
64      compatible = "st,stm32-spi";
67      dma-names = "tx", "rx";
70 compatible: "st,stm32-dma-v2bis"
73   - name: st,stm32-dma.yaml
76   "#dma-cells":
79 # Parameter syntax of stm32 follows the dma client dts syntax
81 …nel.org/pub/scm/linux/kernel/git/devicetree/devicetree-rebasing.git/plain/Bindings/dma/st,stm32-dm…
83 dma-cells:
84   - channel
85   - channel-config