linux-kernel - Re: [PATCH v4 5/6] Documentation: dt-bindings: Add binding info for X-Gene QMTM UIO driver

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Message-ID: <CAAhSdy2L5fPdk97wTVy++B4LcJP_s-r-BF18hg6J9Shfg_t1XQ@mail.gmail.com>
Date:	Sun, 16 Nov 2014 09:56:07 +0530
From:	Anup Patel <anup@...infault.org>
To:	Ankit Jindal <ankit.jindal@...aro.org>
Cc:	"linux-kernel@...r.kernel.org List" <linux-kernel@...r.kernel.org>,
	"Hans J. Koch" <hjk@...sjkoch.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	patches <patches@....com>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Tushar Jagad <tushar.jagad@...aro.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	devicetree@...r.kernel.org, Guenter Roeck <linux@...ck-us.net>,
	Varka Bhadram <varkabhadram@...il.com>,
	Kumar Gala <galak@...eaurora.org>
Subject: Re: [PATCH v4 5/6] Documentation: dt-bindings: Add binding info for
 X-Gene QMTM UIO driver

On Thu, Nov 13, 2014 at 1:15 PM, Ankit Jindal <ankit.jindal@...aro.org> wrote:
> This patch adds device tree binding documentation for
> X-Gene QMTM UIO driver.
>
> Signed-off-by: Ankit Jindal <ankit.jindal@...aro.org>
> Signed-off-by: Tushar Jagad <tushar.jagad@...aro.org>
> ---
>  .../devicetree/bindings/uio/uio_xgene_qmtm.txt     |   51 ++++++++++++++++++++
>  1 file changed, 51 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
>
> diff --git a/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt b/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
> new file mode 100644
> index 0000000..ed85bc6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/uio/uio_xgene_qmtm.txt
> @@ -0,0 +1,51 @@
> +APM X-Gene QMTM nodes
> +
> +The Applied Micro X-Gene SOC has on-chip QMTM (Queue manager
> +and Traffic manager). It is a device for managing hardware queues.
> +It also implements QoS among hardware queues hence term "traffic"
> +manager is present in its name.
> +
> +Required properties:
> +- compatible: Should be "apm,xgene-qmtm"
> +- reg: Address and length of the register set for the device. It contains the
> +  information of registers in the same order as described by reg-names.
> +- reg-names: Should contain the register set names
> +  - "csr": QMTM control and status register address space.
> +  - "fabric": QMTM memory mapped access to queue states.
> +- qpool-memory: Points to the phandle of the node defining memory location for
> +        creating QMTM queues. This must point to the reserved-memory node
> +        (as-per reserved memory bindings). It is expected that size and
> +        location of qpool memory will be configurable via bootloader.
> +- clocks: Reference to the clock entry.
> +- num-queues: Number of queues under this QMTM device.
> +- devid: QMTM identification number for the system having multiple QMTM devices.
> +        This is used to form a unique id (a tuple of queue number and
> +        device id) for the queues belonging to this device.
> +
> +Example:
> +       qmtm1_uio_qpool: qmtm1_uio_qpool {
> +               reg = <0x0 0x0 0x0 0x0>
> +       };
> +
> +       qmtm1clk: qmtmclk@...0c000 {
> +               compatible = "apm,xgene-device-clock";
> +               clock-output-names = "qmtm1clk";
> +               status = "ok";
> +       };
> +
> +       qmtm1_uio: qmtm_uio@...00000 {
> +               compatible = "apm,xgene-qmtm";
> +               status = "disabled";
> +               reg = <0x0 0x1f200000 0x0 0x10000>,
> +                     <0x0 0x1b000000 0x0 0x400000>;
> +               reg-names = "csr", "fabric";
> +               qpool = <&qmtm1_uio_qpool>;

Small typo, this should be qpool-memory = <...>;

> +               clocks = <&qmtm1clk 0>;
> +               num-queues = <0x400>;
> +               devid = <1>;
> +       };
> +
> +       /* Board-specific peripheral configurations */
> +       &qmtm1_uio {
> +               status = "ok";
> +       };
> --
> 1.7.9.5
>
> --
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