linux-kernel - Re: [PATCH 2/3] ARM: sunxi: Add an ahci-platform compatible AHCI driver for the Allwinner SUNXi series of SoCs

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Message-ID: <20131204122602.GN16025@e106331-lin.cambridge.arm.com>
Date:	Wed, 4 Dec 2013 12:26:02 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	"oliver@...inagl.nl" <oliver@...inagl.nl>
Cc:	"tj@...nel.org" <tj@...nel.org>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"ob.herring@...xeda.com" <ob.herring@...xeda.com>,
	"linux-ide@...r.kernel.org" <linux-ide@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"dev@...ux-sunxi.org" <dev@...ux-sunxi.org>,
	"maxime.ripard@...e-electrons.com" <maxime.ripard@...e-electrons.com>,
	"ijc@...lion.org.uk" <ijc@...lion.org.uk>,
	"hdegoede@...hat.com" <hdegoede@...hat.com>,
	"oliver+list@...inagl.nl" <oliver+list@...inagl.nl>
Subject: Re: [PATCH 2/3] ARM: sunxi: Add an ahci-platform compatible AHCI
 driver for the Allwinner SUNXi series of SoCs

On Wed, Dec 04, 2013 at 12:10:54PM +0000, oliver@...inagl.nl wrote:
> From: Oliver Schinagl <oliver@...inagl.nl>
> 
> This patch adds support for the sunxi series of SoC's by allwinner. It
> plugs into the ahci-platform framework.
> 
> Note: Currently it uses a somewhat hackish approach that probably needs
> a lot more work, but does the same as the IMX SoC's.
> 
> Signed-off-by: Olliver Schinagl <oliver@...inagl.nl>
> ---
>  .../devicetree/bindings/ata/ahci-sunxi.txt         |  24 ++
>  drivers/ata/Kconfig                                |   9 +
>  drivers/ata/Makefile                               |   1 +
>  drivers/ata/ahci_platform.c                        |  12 +
>  drivers/ata/ahci_sunxi.c                           | 305 +++++++++++++++++++++
>  5 files changed, 351 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/ata/ahci-sunxi.txt
>  create mode 100644 drivers/ata/ahci_sunxi.c
> 
> diff --git a/Documentation/devicetree/bindings/ata/ahci-sunxi.txt b/Documentation/devicetree/bindings/ata/ahci-sunxi.txt
> new file mode 100644
> index 0000000..0792fa5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ata/ahci-sunxi.txt
> @@ -0,0 +1,24 @@
> +Allwinner SUNXI AHCI SATA Controller
> +
> +SATA nodes are defined to describe on-chip Serial ATA controllers.
> +Each SATA controller should have its own node.
> +
> +Required properties:
> +- compatible   : compatible list, contains "allwinner,sun4i-a10-ahci"

- compatible: Should contain "allwinner,sun4i-a10-ahci"

> +- reg          : <registers mapping>

- reg: The offset and length of the MMIO registers.

> +- interrupts   : <interrupt mapping for AHCI IRQ>

- interrupts: An interrupt-specifier for the ACHI interrupt

> +- clocks       : clocks for ACHI
> +- clock-names  : clock names for AHCI

Please _define_ the set of clock-names you expect. This binding is
meaningless without it. If you require clock-names, define the clocks
property in terms of it.

Thanks,
Mark.
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