Re: [PATCH 1/5 v3] Add the explanation and a sample of RapidIO OF node to the document of booting-without-of.txt file.
From: Kumar Gala <hidden>
Date: 2007-07-27 08:51:19
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On Jul 26, 2007, at 3:42 AM, Zhang Wei wrote:
quoted hunk ↗ jump to hunk
Add the explanation and a sample of RapidIO OF node to the document of booting-without-of.txt file. Signed-off-by: Zhang Wei <redacted> --- Documentation/powerpc/booting-without-of.txt | 37 +++++++++++++++ +++++++++++ 1 files changed, 37 insertions(+), 0 deletions(-)diff --git a/Documentation/powerpc/booting-without-of.txt b/Documentation/powerpc/booting-without-of.txt index 76733a3..d89b805 100644--- a/Documentation/powerpc/booting-without-of.txt +++ b/Documentation/powerpc/booting-without-of.txt@@ -1824,6 +1824,43 @@ platforms are moved over to use theflattened-device-tree model. fsl,has-rstcr; }; + l) RapidIO + + RapidIO is a definition of a system interconnect. This node add + the support for RapidIO processor in kernel. The node name is + suggested to be 'rapidio'. + + Required properties: + + - compatible : Using "fsl,rapidio-delta" for Freescale PowerPC + RapidIO controller. + - #address-cells : Address representation for "rapidio" devices. + This field represents the number of cells needed to represent + the RapidIO address of the registers.
Can you explain this a little further. I'm a bit confused by 'RapidIO address of the registers'.
+ See 1) above for more details on defining #address-cells.
+ - reg : Offset and length of the register set for the device
+ - ranges : Should be defined as specified in 1) to describe the
+ translation of addresses for memory mapped RapidIO memory
+ space.
+ - interrupts : binding interrupts for this device node,
+ please follow below orders:
+ <err_irq bell_outb_irq bell_inb_irq msg1_tx_irq msg1_rx_irq
+ msg2_tx_irq msg2_rx_irq ... msgN_tx_irq msgN_rx_irq>.
+
+ Example:
+
+ rapidio@c0000 {
+ compatible = "fsl,rapidio-delta";
+ #address-cells = <2>;
+ #size-cells = <2>;
+ reg = <c0000 20000>;
+ ranges = <0 0 c0000000 20000000>;
+ interrupt-parent = <&mpic>;
+ /* err_irq bell_outb_irq bell_inb_irq msg1_tx_irq msg1_rx_irq
+ msg2_tx_irq msg2_rx_irq */
+ interrupts = <30 2 31 2 32 2 35 2 36 2 37 2 38 2>;
+ };
+
More devices will be defined as this spec matures.
VII - Specifying interrupt information for devices
--
1.5.1