[PATCH] Add QE device tree definition

Li Yang-r58472 LeoLi at freescale.com
Thu Jun 29 22:53:03 EST 2006


This is the device tree definition for QE SOC for Freescale CPUs.

I have discussed with Vitaly.  We agreed on having CPM and QE definition ultimately merged.  He will add in CPM specified definition later.

Signed-off-by: Jiang Bo <Tanya.jiang at freescale.com>
Signed-off-by: Li Yang <leoli at freescale.com>
Signed-off-by: Kim Phillips <kim.phillips at freescale.com>
Signed-off-by: Vitaly Bordug <vbordug at ru.mvista.com>

---
Documentation/powerpc/booting-without-of.txt |  222 ++++++++++++++++++++++++++
 1 files changed, 222 insertions(+), 0 deletions(-)

diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt
index 217e517..096063f 100644
--- a/Documentation/powerpc/booting-without-of.txt
+++ b/Documentation/powerpc/booting-without-of.txt
@@ -1442,6 +1442,227 @@ platforms are moved over to use the flat
        };
 
 
+   h) 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.	
+
+   1) 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 register set for the device.
+   - 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 at 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>;
+	}
+
+
+   2) 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 to the register set and its length.
+   - 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 at 4c0 {
+		device_type = "spi";
+		compatible = "fsl_spi";
+		reg = <4c0 40>;
+		interrupts = <82 0>;
+		interrupt-parent = <700>;
+		mode = "cpu"; 
+	};
+
+
+   3) USB (Universal Serial Bus Controller)
+
+   Required properties:
+   - device_type : should be "usb".
+   - compatible : could be "qe_udc" or "fhci-hcd".
+   - model : the could be "host" or "slave".
+   - reg : there will be two tuples of "address size".  The first tuple is
+     offset and length of the device registers respectively; the second is
+     offset and length of the device parameter RAM respectively.
+   - 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 at 6c0 {
+		device_type = "usb";
+		compatible = "qe_udc"; 
+		reg = <6c0 40 8B00 100>;
+		interrupts = <8b 0>;
+		interrupt-parent = <700>;
+		mode = "slave"; 
+	};
+
+
+   4) 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 : there will be two tuples of "address size".  The first tuple is
+     offset and length of the device registers respectively; the second is
+     offset and length of the device parameter RAM respectively.
+   - 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.
+
+   Required properties for network device_type:
+   - mac-address : list of bytes representing the ethernet address.
+   - rx-clock : a string represents the UCC receive clock source.
+     "brgx" : clock source is BRG1~BRG16 respectively;
+     "clkx" : clock source is QE_CLK1~QE_CLK24 respectively.
+     others : clock source is disabled;
+   - tx-clock: a string represents the UCC transmit clock source;
+     "brgx" : clock source is BRG1~BRG16 respectively;
+     "clkx" : clock source is QE_CLK1~QE_CLK24 respectively.
+     others : clock source is disabled;
+   - phy-handle : The phandle for the PHY connected to this controller.
+
+   Example:
+	ucc at 2000 {
+		device_type = "network";
+		compatible = "ucc_geth";
+		model = "UCC";
+		device-id = <1>;
+		reg = <2000 200 8400 100>;
+		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>;
+	};
+
+
+   5) 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.
+
+   Example:
+	par_io at 1400 {
+		reg = <1400 100>;
+		#address-cells = <1>;
+		#size-cells = <0>;		
+		device_type = "par_io";
+		ucc_pin at 01 {
+			......
+		};
+
+
+   6) 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 at 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 */
+	};
+
+
    More devices will be defined as this spec matures.
 




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