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-rw-r--r--Documentation/powerpc/dts-bindings/fsl/i2c.txt46
-rw-r--r--Documentation/powerpc/dts-bindings/mtd-physmap.txt80
2 files changed, 111 insertions, 15 deletions
diff --git a/Documentation/powerpc/dts-bindings/fsl/i2c.txt b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
index d0ab33e21fe6..b6d2e21474f9 100644
--- a/Documentation/powerpc/dts-bindings/fsl/i2c.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
@@ -7,8 +7,10 @@ Required properties :
7 7
8Recommended properties : 8Recommended properties :
9 9
10 - compatible : Should be "fsl-i2c" for parts compatible with 10 - compatible : compatibility list with 2 entries, the first should
11 Freescale I2C specifications. 11 be "fsl,CHIP-i2c" where CHIP is the name of a compatible processor,
12 e.g. mpc8313, mpc8543, mpc8544, mpc5200 or mpc5200b. The second one
13 should be "fsl-i2c".
12 - interrupts : <a b> where a is the interrupt number and b is a 14 - interrupts : <a b> where a is the interrupt number and b is a
13 field that represents an encoding of the sense and level 15 field that represents an encoding of the sense and level
14 information for the interrupt. This should be encoded based on 16 information for the interrupt. This should be encoded based on
@@ -16,17 +18,31 @@ Recommended properties :
16 controller you have. 18 controller you have.
17 - interrupt-parent : the phandle for the interrupt controller that 19 - interrupt-parent : the phandle for the interrupt controller that
18 services interrupts for this device. 20 services interrupts for this device.
19 - dfsrr : boolean; if defined, indicates that this I2C device has 21 - fsl,preserve-clocking : boolean; if defined, the clock settings
20 a digital filter sampling rate register 22 from the bootloader are preserved (not touched).
21 - fsl5200-clocking : boolean; if defined, indicated that this device 23 - clock-frequency : desired I2C bus clock frequency in Hz.
22 uses the FSL 5200 clocking mechanism. 24
23 25Examples :
24Example : 26
25 i2c@3000 { 27 i2c@3d00 {
26 interrupt-parent = <40000>; 28 #address-cells = <1>;
27 interrupts = <1b 3>; 29 #size-cells = <0>;
28 reg = <3000 18>; 30 compatible = "fsl,mpc5200b-i2c","fsl,mpc5200-i2c","fsl-i2c";
29 device_type = "i2c"; 31 cell-index = <0>;
30 compatible = "fsl-i2c"; 32 reg = <0x3d00 0x40>;
31 dfsrr; 33 interrupts = <2 15 0>;
34 interrupt-parent = <&mpc5200_pic>;
35 fsl,preserve-clocking;
32 }; 36 };
37
38 i2c@3100 {
39 #address-cells = <1>;
40 #size-cells = <0>;
41 cell-index = <1>;
42 compatible = "fsl,mpc8544-i2c", "fsl-i2c";
43 reg = <0x3100 0x100>;
44 interrupts = <43 2>;
45 interrupt-parent = <&mpic>;
46 clock-frequency = <400000>;
47 };
48
diff --git a/Documentation/powerpc/dts-bindings/mtd-physmap.txt b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
new file mode 100644
index 000000000000..667c9bde8699
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
@@ -0,0 +1,80 @@
1CFI or JEDEC memory-mapped NOR flash
2
3Flash chips (Memory Technology Devices) are often used for solid state
4file systems on embedded devices.
5
6 - compatible : should contain the specific model of flash chip(s)
7 used, if known, followed by either "cfi-flash" or "jedec-flash"
8 - reg : Address range(s) of the flash chip(s)
9 It's possible to (optionally) define multiple "reg" tuples so that
10 non-identical NOR chips can be described in one flash node.
11 - bank-width : Width (in bytes) of the flash bank. Equal to the
12 device width times the number of interleaved chips.
13 - device-width : (optional) Width of a single flash chip. If
14 omitted, assumed to be equal to 'bank-width'.
15 - #address-cells, #size-cells : Must be present if the flash has
16 sub-nodes representing partitions (see below). In this case
17 both #address-cells and #size-cells must be equal to 1.
18
19For JEDEC compatible devices, the following additional properties
20are defined:
21
22 - vendor-id : Contains the flash chip's vendor id (1 byte).
23 - device-id : Contains the flash chip's device id (1 byte).
24
25In addition to the information on the flash bank itself, the
26device tree may optionally contain additional information
27describing partitions of the flash address space. This can be
28used on platforms which have strong conventions about which
29portions of the flash are used for what purposes, but which don't
30use an on-flash partition table such as RedBoot.
31
32Each partition is represented as a sub-node of the flash device.
33Each node's name represents the name of the corresponding
34partition of the flash device.
35
36Flash partitions
37 - reg : The partition's offset and size within the flash bank.
38 - label : (optional) The label / name for this flash partition.
39 If omitted, the label is taken from the node name (excluding
40 the unit address).
41 - read-only : (optional) This parameter, if present, is a hint to
42 Linux that this flash partition should only be mounted
43 read-only. This is usually used for flash partitions
44 containing early-boot firmware images or data which should not
45 be clobbered.
46
47Example:
48
49 flash@ff000000 {
50 compatible = "amd,am29lv128ml", "cfi-flash";
51 reg = <ff000000 01000000>;
52 bank-width = <4>;
53 device-width = <1>;
54 #address-cells = <1>;
55 #size-cells = <1>;
56 fs@0 {
57 label = "fs";
58 reg = <0 f80000>;
59 };
60 firmware@f80000 {
61 label ="firmware";
62 reg = <f80000 80000>;
63 read-only;
64 };
65 };
66
67Here an example with multiple "reg" tuples:
68
69 flash@f0000000,0 {
70 #address-cells = <1>;
71 #size-cells = <1>;
72 compatible = "intel,PC48F4400P0VB", "cfi-flash";
73 reg = <0 0x00000000 0x02000000
74 0 0x02000000 0x02000000>;
75 bank-width = <2>;
76 partition@0 {
77 label = "test-part1";
78 reg = <0 0x04000000>;
79 };
80 };