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SubjectRe: [PATCH 1/5 v3] Add the explanation and a sample of RapidIO OF node to the document of booting-without-of.txt file.
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On Jul 26, 2007, at 3:42 AM, Zhang Wei wrote:

> Add the explanation and a sample of RapidIO OF node to the document
> of booting-without-of.txt file.
>
> Signed-off-by: Zhang Wei <wei.zhang@freescale.com>
> ---
> 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 the
> flattened-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

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