Re: [PATCH] Packet hub driver of Topcliff PCH

From: Randy Dunlap
Date: Wed Jun 30 2010 - 14:06:59 EST

On Wed, 30 Jun 2010 16:51:30 +0900 Masayuki Ohtak wrote:

> Hi Andy and Andrew
> I have modified for your comments.
> Please confirm below.
> ---
> Packet hub driver of Topcliff PCH
> Topcliff PCH is the platform controller hub that is going to be used in
> Intelâs upcoming general embedded platform. All IO peripherals in
> Topcliff PCH are actually devices sitting on AMBA bus. Packet hub is
> a special converter device in Topcliff PCH that translate AMBA transactions
> to PCI Express transactions and vice versa. Thus packet hub helps present
> all IO peripherals in Topcliff PCH as PCIE devices to IA system.
> Topcliff PCH have MAC address and Option ROM data.
> These data are in SROM which is connected to PCIE bus.
> Packet hub driver of Topcliff PCH can access MAC address and Option ROM data in
> Signed-off-by: Masayuki Ohtake <masa-korg@xxxxxxxxxxxxxxx>
> Acked-by: Arnd <Arndâs email address>

It's listed in the MAINTAINERS file. Please use that.

> diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
> index e023682..1851e97 100644
> --- a/drivers/char/Kconfig
> +++ b/drivers/char/Kconfig
> @@ -4,6 +4,16 @@
> menu "Character devices"
> +config PCH_PHUB
> + tristate "PCH PHUB"
> + depends on PCI
> + help
> + Topcliff is a IOH for x86 embedded processor. This IOH is quite

is an IOH for x86 embedded processors.

> + different with the traditional IOH. Topcliff is a kind of ARM-based


> + processor and connected with PCIe bus (from x86 processor).
> + PHUB work as a gateway transform the PCIe transaction into the AMBA

works as a gateway to transform

> + transaction, and vise verse, and have several transform windows also.

vice versa, and has several

Maybe lose some acromyns? Overall, this help text should be about
*what* PCH_PHUB is, not *how* it accomplishes its work.
If you want to document *how* it works, put that into the source code
or Documentation/ somewhere.

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