tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1OMAP2+ McSPI device
2
3Required properties:
4- compatible :
5 - "ti,am654-mcspi" for AM654.
6 - "ti,omap2-mcspi" for OMAP2 & OMAP3.
7 - "ti,omap4-mcspi" for OMAP4+.
8- ti,spi-num-cs : Number of chipselect supported by the instance.
9- ti,hwmods: Name of the hwmod associated to the McSPI
10- ti,pindir-d0-out-d1-in: Select the D0 pin as output and D1 as
11 input. The default is D0 as input and
12 D1 as output.
13
14Optional properties:
15- dmas: List of DMA specifiers with the controller specific format
16 as described in the generic DMA client binding. A tx and rx
17 specifier is required for each chip select.
18- dma-names: List of DMA request names. These strings correspond
19 1:1 with the DMA specifiers listed in dmas. The string naming
20 is to be "rxN" and "txN" for RX and TX requests,
21 respectively, where N equals the chip select number.
22
23Examples:
24
25[hwmod populated DMA resources]
26
27mcspi1: mcspi@1 {
28 #address-cells = <1>;
29 #size-cells = <0>;
30 compatible = "ti,omap4-mcspi";
31 ti,hwmods = "mcspi1";
32 ti,spi-num-cs = <4>;
33};
34
35[generic DMA request binding]
36
37mcspi1: mcspi@1 {
38 #address-cells = <1>;
39 #size-cells = <0>;
40 compatible = "ti,omap4-mcspi";
41 ti,hwmods = "mcspi1";
42 ti,spi-num-cs = <2>;
43 dmas = <&edma 42
44 &edma 43
45 &edma 44
46 &edma 45>;
47 dma-names = "tx0", "rx0", "tx1", "rx1";
48};