Linux Audio

Check our new training course

Embedded Linux Audio

Check our new training course
with Creative Commons CC-BY-SA
lecture materials

Bootlin logo

Elixir Cross Referencer

Open Menu / Documentation / devicetree / bindings / powerpc / fsl / mpc5121-psc.txt
Loading...
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
MPC5121 PSC Device Tree Bindings

PSC in UART mode
----------------

For PSC in UART mode the needed PSC serial devices
are specified by fsl,mpc5121-psc-uart nodes in the
fsl,mpc5121-immr SoC node. Additionally the PSC FIFO
Controller node fsl,mpc5121-psc-fifo is requered there:

fsl,mpc5121-psc-uart nodes
--------------------------

Required properties :
 - compatible : Should contain "fsl,mpc5121-psc-uart" and "fsl,mpc5121-psc"
 - cell-index : Index of the PSC in hardware
 - reg : Offset and length of the register set for the PSC device
 - interrupts : <a b> where a is the interrupt number of the
   PSC FIFO Controller and b is a field that represents an
   encoding of the sense and level information for the interrupt.
 - interrupt-parent : the phandle for the interrupt controller that
   services interrupts for this device.

Recommended properties :
 - fsl,rx-fifo-size : the size of the RX fifo slice (a multiple of 4)
 - fsl,tx-fifo-size : the size of the TX fifo slice (a multiple of 4)


fsl,mpc5121-psc-fifo node
-------------------------

Required properties :
 - compatible : Should be "fsl,mpc5121-psc-fifo"
 - reg : Offset and length of the register set for the PSC
         FIFO Controller
 - interrupts : <a b> where a is the interrupt number of the
   PSC FIFO Controller and b is a field that represents an
   encoding of the sense and level information for the interrupt.
 - interrupt-parent : the phandle for the interrupt controller that
   services interrupts for this device.


Example for a board using PSC0 and PSC1 devices in serial mode:

serial@11000 {
	compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
	cell-index = <0>;
	reg = <0x11000 0x100>;
	interrupts = <40 0x8>;
	interrupt-parent = < &ipic >;
	fsl,rx-fifo-size = <16>;
	fsl,tx-fifo-size = <16>;
};

serial@11100 {
	compatible = "fsl,mpc5121-psc-uart", "fsl,mpc5121-psc";
	cell-index = <1>;
	reg = <0x11100 0x100>;
	interrupts = <40 0x8>;
	interrupt-parent = < &ipic >;
	fsl,rx-fifo-size = <16>;
	fsl,tx-fifo-size = <16>;
};

pscfifo@11f00 {
	compatible = "fsl,mpc5121-psc-fifo";
	reg = <0x11f00 0x100>;
	interrupts = <40 0x8>;
	interrupt-parent = < &ipic >;
};