diff options
| -rw-r--r-- | Documentation/powerpc/booting-without-of.txt | 252 |
1 files changed, 252 insertions, 0 deletions
diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index 5c0ba235f5a..b57e7da7897 100644 --- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt @@ -1441,6 +1441,258 @@ platforms are moved over to use the flattened-device-tree model. descriptor-types-mask = <012b0ebf>; }; + h) Board Control and Status (BCSR) + + Required properties: + + - device_type : Should be "board-control" + - reg : Offset and length of the register set for the device + + Example: + + bcsr@f8000000 { + device_type = "board-control"; + reg = <f8000000 8000>; + }; + + i) Freescale QUICC Engine module (QE) + This represents qe module that is installed on PowerQUICC II Pro. + Hopefully it will merge backward compatibility with CPM/CPM2. + Basically, it is a bus of devices, that could act more or less + as a complete entity (UCC, USB etc ). All of them should be siblings on + the "root" qe node, using the common properties from there. + The description below applies to the the qe of MPC8360 and + more nodes and properties would be extended in the future. + + i) Root QE device + + Required properties: + - device_type : should be "qe"; + - model : precise model of the QE, Can be "QE", "CPM", or "CPM2" + - reg : offset and length of the device registers. + - bus-frequency : the clock frequency for QUICC Engine. + + Recommended properties + - brg-frequency : the internal clock source frequency for baud-rate + generators in Hz. + + Example: + qe@e0100000 { + #address-cells = <1>; + #size-cells = <1>; + #interrupt-cells = <2>; + device_type = "qe"; + model = "QE"; + ranges = <0 e0100000 00100000>; + reg = <e0100000 480>; + brg-frequency = <0>; + bus-frequency = <179A7B00>; + } + + + ii) SPI (Serial Peripheral Interface) + + Required properties: + - device_type : should be "spi". + - compatible : should be "fsl_spi". + - mode : the spi operation mode, it can be "cpu" or "qe". + - reg : Offset and length of the register set for the device + - 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 + the information in section 2) depending on the type of interrupt + controller you have. + - interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. + + Example: + spi@4c0 { + device_type = "spi"; + compatible = "fsl_spi"; + reg = <4c0 40>; + interrupts = <82 0>; + interrupt-parent = <700>; + mode = "cpu"; + }; + + + iii) USB (Universal Serial Bus Controller) + + Required properties: + - device_type : should be "usb". + - compatible : could be "qe_udc" or "fhci-hcd". + - mode : the could be "host" or "slave". + - reg : Offset and length of the register set for the device + - 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 + the information in section 2) depending on the type of interrupt + controller you have. + - interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. + + Example(slave): + usb@6c0 { + device_type = "usb"; + compatible = "qe_udc"; + reg = <6c0 40>; + interrupts = <8b 0>; + interrupt-parent = <700>; + mode = "slave"; + }; + + + iv) UCC (Unified Communications Controllers) + + Required properties: + - device_type : should be "network", "hldc", "uart", "transparent" + "bisync" or "atm". + - compatible : could be "ucc_geth" or "fsl_atm" and so on. + - model : should be "UCC". + - device-id : the ucc number(1-8), corresponding to UCCx in UM. + - reg : Offset and length of the register set for the device + - 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 + the information in section 2) depending on the type of interrupt + controller you have. + - interrupt-parent : the phandle for the interrupt controller that + services interrupts for this device. + - pio-handle : The phandle for the Parallel I/O port configuration. + - rx-clock : represents the UCC receive clock source. + 0x00 : clock source is disabled; + 0x1~0x10 : clock source is BRG1~BRG16 respectively; + 0x11~0x28: clock source is QE_CLK1~QE_CLK24 respectively. + - tx-clock: represents the UCC transmit clock source; + 0x00 : clock source is disabled; + 0x1~0x10 : clock source is BRG1~BRG16 respectively; + 0x11~0x28: clock source is QE_CLK1~QE_CLK24 respectively. + + Required properties for network device_type: + - mac-address : list of bytes representing the ethernet address. + - phy-handle : The phandle for the PHY connected to this controller. + + Example: + ucc@2000 { + device_type = "network"; + compatible = "ucc_geth"; + model = "UCC"; + device-id = <1>; + reg = <2000 200>; + interrupts = <a0 0>; + interrupt-parent = <700>; + mac-address = [ 00 04 9f 00 23 23 ]; + rx-clock = "none"; + tx-clock = "clk9"; + phy-handle = <212000>; + pio-handle = <140001>; + }; + + + v) Parallel I/O Ports + + This node configures Parallel I/O ports for CPUs with QE support. + The node should reside in the "soc" node of the tree. For each + device that using parallel I/O ports, a child node should be created. + See the definition of the Pin configuration nodes below for more + information. + + Required properties: + - device_type : should be "par_io". + - reg : offset to the register set and its length. + - num-ports : number of Parallel I/O ports + + Example: + par_io@1400 { + reg = <1400 100>; + #address-cells = <1>; + #size-cells = <0>; + device_type = "par_io"; + num-ports = <7>; + ucc_pin@01 { + ...... + }; + + + vi) Pin configuration nodes + + Required properties: + - linux,phandle : phandle of this node; likely referenced by a QE + device. + - pio-map : array of pin configurations. Each pin is defined by 6 + integers. The six numbers are respectively: port, pin, dir, + open_drain, assignment, has_irq. + - port : port number of the pin; 0-6 represent port A-G in UM. + - pin : pin number in the port. + - dir : direction of the pin, should encode as follows: + + 0 = The pin is disabled + 1 = The pin is an output + 2 = The pin is an input + 3 = The pin is I/O + + - open_drain : indicates the pin is normal or wired-OR: + + 0 = The pin is actively driven as an output + 1 = The pin is an open-drain driver. As an output, the pin is + driven active-low, otherwise it is three-stated. + + - assignment : function number of the pin according to the Pin Assignment + tables in User Manual. Each pin can have up to 4 possible functions in + QE and two options for CPM. + - has_irq : indicates if the pin is used as source of exteral + interrupts. + + Example: + ucc_pin@01 { + linux,phandle = <140001>; + pio-map = < + /* port pin dir open_drain assignment has_irq */ + 0 3 1 0 1 0 /* TxD0 */ + 0 4 1 0 1 0 /* TxD1 */ + 0 5 1 0 1 0 /* TxD2 */ + 0 6 1 0 1 0 /* TxD3 */ + 1 6 1 0 3 0 /* TxD4 */ + 1 7 1 0 1 0 /* TxD5 */ + 1 9 1 0 2 0 /* TxD6 */ + 1 a 1 0 2 0 /* TxD7 */ + 0 9 2 0 1 0 /* RxD0 */ + 0 a 2 0 1 0 /* RxD1 */ + 0 b 2 0 1 0 /* RxD2 */ + 0 c 2 0 1 0 /* RxD3 */ + 0 d 2 0 1 0 /* RxD4 */ + 1 1 2 0 2 0 /* RxD5 */ + 1 0 2 0 2 0 /* RxD6 */ + 1 4 2 0 2 0 /* RxD7 */ + 0 7 1 0 1 0 /* TX_EN */ + 0 8 1 0 1 0 /* TX_ER */ + 0 f 2 0 1 0 /* RX_DV */ + 0 10 2 0 1 0 /* RX_ER */ + 0 0 2 0 1 0 /* RX_CLK */ + 2 9 1 0 3 0 /* GTX_CLK - CLK10 */ + 2 8 2 0 1 0>; /* GTX125 - CLK9 */ + }; + + vii) Multi-User RAM (MURAM) + + Required properties: + - device_type : should be "muram". + - mode : the could be "host" or "slave". + - ranges : Should be defined as specified in 1) to describe the + translation of MURAM addresses. + - data-only : sub-node which defines the address area under MURAM + bus that can be allocated as data/parameter + + Example: + + muram@10000 { + device_type = "muram"; + ranges = <0 00010000 0000c000>; + + data-only@0{ + reg = <0 c000>; + }; + }; More devices will be defined as this spec matures. |