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authorH. Peter Anvin <hpa@zytor.com>2009-05-23 16:42:19 -0700
committerH. Peter Anvin <hpa@zytor.com>2009-05-23 16:42:19 -0700
commitee0736627d3347be0be2769fa7b26431f9726c9d (patch)
tree203e2204daaec4cf005463fdf2c7bf380d6eef36 /Documentation/powerpc
parentcf9972a921470b0a2da7906104bcd540b20e33bf (diff)
parent0af48f42df15b97080b450d24219dd95db7b929a (diff)
Merge branch 'x86/urgent' into x86/setup
Resolved conflicts: arch/x86/boot/memory.c Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'Documentation/powerpc')
-rw-r--r--Documentation/powerpc/booting-without-of.txt89
-rw-r--r--Documentation/powerpc/dts-bindings/fsl/i2c.txt46
-rw-r--r--Documentation/powerpc/dts-bindings/mtd-physmap.txt80
3 files changed, 123 insertions, 92 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 0ab0230cbcb..d16b7a1c379 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -43,12 +43,11 @@ Table of Contents
2) Representing devices without a current OF specification
a) PHY nodes
b) Interrupt controllers
- c) CFI or JEDEC memory-mapped NOR flash
- d) 4xx/Axon EMAC ethernet nodes
- e) Xilinx IP cores
- f) USB EHCI controllers
- g) MDIO on GPIOs
- h) SPI busses
+ c) 4xx/Axon EMAC ethernet nodes
+ d) Xilinx IP cores
+ e) USB EHCI controllers
+ f) MDIO on GPIOs
+ g) SPI busses
VII - Marvell Discovery mv64[345]6x System Controller chips
1) The /system-controller node
@@ -999,7 +998,7 @@ compatibility.
translation of SOC addresses for memory mapped SOC registers.
- bus-frequency: Contains the bus frequency for the SOC node.
Typically, the value of this field is filled in by the boot
- loader.
+ loader.
Recommended properties:
@@ -1287,71 +1286,7 @@ platforms are moved over to use the flattened-device-tree model.
device_type = "open-pic";
};
- c) CFI or JEDEC memory-mapped NOR flash
-
- Flash chips (Memory Technology Devices) are often used for solid state
- file systems on embedded devices.
-
- - compatible : should contain the specific model of flash chip(s)
- used, if known, followed by either "cfi-flash" or "jedec-flash"
- - reg : Address range of the flash chip
- - bank-width : Width (in bytes) of the flash bank. Equal to the
- device width times the number of interleaved chips.
- - device-width : (optional) Width of a single flash chip. If
- omitted, assumed to be equal to 'bank-width'.
- - #address-cells, #size-cells : Must be present if the flash has
- sub-nodes representing partitions (see below). In this case
- both #address-cells and #size-cells must be equal to 1.
-
- For JEDEC compatible devices, the following additional properties
- are defined:
-
- - vendor-id : Contains the flash chip's vendor id (1 byte).
- - device-id : Contains the flash chip's device id (1 byte).
-
- In addition to the information on the flash bank itself, the
- device tree may optionally contain additional information
- describing partitions of the flash address space. This can be
- used on platforms which have strong conventions about which
- portions of the flash are used for what purposes, but which don't
- use an on-flash partition table such as RedBoot.
-
- Each partition is represented as a sub-node of the flash device.
- Each node's name represents the name of the corresponding
- partition of the flash device.
-
- Flash partitions
- - reg : The partition's offset and size within the flash bank.
- - label : (optional) The label / name for this flash partition.
- If omitted, the label is taken from the node name (excluding
- the unit address).
- - read-only : (optional) This parameter, if present, is a hint to
- Linux that this flash partition should only be mounted
- read-only. This is usually used for flash partitions
- containing early-boot firmware images or data which should not
- be clobbered.
-
- Example:
-
- flash@ff000000 {
- compatible = "amd,am29lv128ml", "cfi-flash";
- reg = <ff000000 01000000>;
- bank-width = <4>;
- device-width = <1>;
- #address-cells = <1>;
- #size-cells = <1>;
- fs@0 {
- label = "fs";
- reg = <0 f80000>;
- };
- firmware@f80000 {
- label ="firmware";
- reg = <f80000 80000>;
- read-only;
- };
- };
-
- d) 4xx/Axon EMAC ethernet nodes
+ c) 4xx/Axon EMAC ethernet nodes
The EMAC ethernet controller in IBM and AMCC 4xx chips, and also
the Axon bridge. To operate this needs to interact with a ths
@@ -1499,7 +1434,7 @@ platforms are moved over to use the flattened-device-tree model.
available.
For Axon: 0x0000012a
- e) Xilinx IP cores
+ d) Xilinx IP cores
The Xilinx EDK toolchain ships with a set of IP cores (devices) for use
in Xilinx Spartan and Virtex FPGAs. The devices cover the whole range
@@ -1761,7 +1696,7 @@ platforms are moved over to use the flattened-device-tree model.
listed above, nodes for these devices should include a phy-handle
property, and may include other common network device properties
like local-mac-address.
-
+
iv) Xilinx Uartlite
Xilinx uartlite devices are simple fixed speed serial ports.
@@ -1793,7 +1728,7 @@ platforms are moved over to use the flattened-device-tree model.
- reg-offset : A value of 3 is required
- reg-shift : A value of 2 is required
- f) USB EHCI controllers
+ e) USB EHCI controllers
Required properties:
- compatible : should be "usb-ehci".
@@ -1819,7 +1754,7 @@ platforms are moved over to use the flattened-device-tree model.
big-endian;
};
- g) MDIO on GPIOs
+ f) MDIO on GPIOs
Currently defined compatibles:
- virtual,gpio-mdio
@@ -1839,7 +1774,7 @@ platforms are moved over to use the flattened-device-tree model.
&qe_pio_c 6>;
};
- h) SPI (Serial Peripheral Interface) busses
+ g) SPI (Serial Peripheral Interface) busses
SPI busses can be described with a node for the SPI master device
and a set of child nodes for each SPI slave on the bus. For this
diff --git a/Documentation/powerpc/dts-bindings/fsl/i2c.txt b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
index d0ab33e21fe..b6d2e21474f 100644
--- a/Documentation/powerpc/dts-bindings/fsl/i2c.txt
+++ b/Documentation/powerpc/dts-bindings/fsl/i2c.txt
@@ -7,8 +7,10 @@ Required properties :
Recommended properties :
- - compatible : Should be "fsl-i2c" for parts compatible with
- Freescale I2C specifications.
+ - compatible : compatibility list with 2 entries, the first should
+ be "fsl,CHIP-i2c" where CHIP is the name of a compatible processor,
+ e.g. mpc8313, mpc8543, mpc8544, mpc5200 or mpc5200b. The second one
+ should be "fsl-i2c".
- interrupts : <a b> where a is the interrupt number and b is a
field that represents an encoding of the sense and level
information for the interrupt. This should be encoded based on
@@ -16,17 +18,31 @@ Recommended properties :
controller you have.
- interrupt-parent : the phandle for the interrupt controller that
services interrupts for this device.
- - dfsrr : boolean; if defined, indicates that this I2C device has
- a digital filter sampling rate register
- - fsl5200-clocking : boolean; if defined, indicated that this device
- uses the FSL 5200 clocking mechanism.
-
-Example :
- i2c@3000 {
- interrupt-parent = <40000>;
- interrupts = <1b 3>;
- reg = <3000 18>;
- device_type = "i2c";
- compatible = "fsl-i2c";
- dfsrr;
+ - fsl,preserve-clocking : boolean; if defined, the clock settings
+ from the bootloader are preserved (not touched).
+ - clock-frequency : desired I2C bus clock frequency in Hz.
+
+Examples :
+
+ i2c@3d00 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ compatible = "fsl,mpc5200b-i2c","fsl,mpc5200-i2c","fsl-i2c";
+ cell-index = <0>;
+ reg = <0x3d00 0x40>;
+ interrupts = <2 15 0>;
+ interrupt-parent = <&mpc5200_pic>;
+ fsl,preserve-clocking;
};
+
+ i2c@3100 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ cell-index = <1>;
+ compatible = "fsl,mpc8544-i2c", "fsl-i2c";
+ reg = <0x3100 0x100>;
+ interrupts = <43 2>;
+ interrupt-parent = <&mpic>;
+ clock-frequency = <400000>;
+ };
+
diff --git a/Documentation/powerpc/dts-bindings/mtd-physmap.txt b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
new file mode 100644
index 00000000000..667c9bde869
--- /dev/null
+++ b/Documentation/powerpc/dts-bindings/mtd-physmap.txt
@@ -0,0 +1,80 @@
+CFI or JEDEC memory-mapped NOR flash
+
+Flash chips (Memory Technology Devices) are often used for solid state
+file systems on embedded devices.
+
+ - compatible : should contain the specific model of flash chip(s)
+ used, if known, followed by either "cfi-flash" or "jedec-flash"
+ - reg : Address range(s) of the flash chip(s)
+ It's possible to (optionally) define multiple "reg" tuples so that
+ non-identical NOR chips can be described in one flash node.
+ - bank-width : Width (in bytes) of the flash bank. Equal to the
+ device width times the number of interleaved chips.
+ - device-width : (optional) Width of a single flash chip. If
+ omitted, assumed to be equal to 'bank-width'.
+ - #address-cells, #size-cells : Must be present if the flash has
+ sub-nodes representing partitions (see below). In this case
+ both #address-cells and #size-cells must be equal to 1.
+
+For JEDEC compatible devices, the following additional properties
+are defined:
+
+ - vendor-id : Contains the flash chip's vendor id (1 byte).
+ - device-id : Contains the flash chip's device id (1 byte).
+
+In addition to the information on the flash bank itself, the
+device tree may optionally contain additional information
+describing partitions of the flash address space. This can be
+used on platforms which have strong conventions about which
+portions of the flash are used for what purposes, but which don't
+use an on-flash partition table such as RedBoot.
+
+Each partition is represented as a sub-node of the flash device.
+Each node's name represents the name of the corresponding
+partition of the flash device.
+
+Flash partitions
+ - reg : The partition's offset and size within the flash bank.
+ - label : (optional) The label / name for this flash partition.
+ If omitted, the label is taken from the node name (excluding
+ the unit address).
+ - read-only : (optional) This parameter, if present, is a hint to
+ Linux that this flash partition should only be mounted
+ read-only. This is usually used for flash partitions
+ containing early-boot firmware images or data which should not
+ be clobbered.
+
+Example:
+
+ flash@ff000000 {
+ compatible = "amd,am29lv128ml", "cfi-flash";
+ reg = <ff000000 01000000>;
+ bank-width = <4>;
+ device-width = <1>;
+ #address-cells = <1>;
+ #size-cells = <1>;
+ fs@0 {
+ label = "fs";
+ reg = <0 f80000>;
+ };
+ firmware@f80000 {
+ label ="firmware";
+ reg = <f80000 80000>;
+ read-only;
+ };
+ };
+
+Here an example with multiple "reg" tuples:
+
+ flash@f0000000,0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "intel,PC48F4400P0VB", "cfi-flash";
+ reg = <0 0x00000000 0x02000000
+ 0 0x02000000 0x02000000>;
+ bank-width = <2>;
+ partition@0 {
+ label = "test-part1";
+ reg = <0 0x04000000>;
+ };
+ };