netdev - RE: [PATCH v5] can: xilinx CAN controller support.

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Date:	Wed, 5 Mar 2014 07:04:21 +0000
From:	Appana Durga Kedareswara Rao <appana.durga.rao@...inx.com>
To:	Oliver Hartkopp <socketcan@...tkopp.net>
CC:	Soren Brinkmann <sorenb@...inx.com>,
	"wg@...ndegger.com" <wg@...ndegger.com>,
	"mkl@...gutronix.de" <mkl@...gutronix.de>,
	Michal Simek <michals@...inx.com>,
	"grant.likely@...aro.org" <grant.likely@...aro.org>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"linux-can@...r.kernel.org" <linux-can@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>
Subject: RE: [PATCH v5] can: xilinx CAN controller support.

Hi Oliver,

> -----Original Message-----
> From: Oliver Hartkopp [mailto:socketcan@...tkopp.net]
> Sent: Wednesday, March 05, 2014 12:29 PM
> To: Appana Durga Kedareswara Rao
> Cc: Soren Brinkmann; wg@...ndegger.com; mkl@...gutronix.de; Michal
> Simek; grant.likely@...aro.org; robh+dt@...nel.org; linux-
> can@...r.kernel.org; netdev@...r.kernel.org; linux-arm-
> kernel@...ts.infradead.org; linux-kernel@...r.kernel.org;
> devicetree@...r.kernel.org; Appana Durga Kedareswara Rao
> Subject: Re: [PATCH v5] can: xilinx CAN controller support.
>
>
>
> On 05.03.2014 00:51, Sören Brinkmann wrote:
> > Hi Kedar,
> >
> > On Tue, 2014-03-04 at 06:50PM +0530, Kedareswara rao Appana wrote:
> >> This patch adds xilinx CAN controller support.
> >> This driver supports both ZYNQ CANPS and Soft IP AXI CAN controller.
> >>
> > [...]
> >> diff --git a/Documentation/devicetree/bindings/net/can/xilinx_can.txt
> >> b/Documentation/devicetree/bindings/net/can/xilinx_can.txt
> >> new file mode 100644
> >> index 0000000..0e57103
> >> --- /dev/null
> >> +++ b/Documentation/devicetree/bindings/net/can/xilinx_can.txt
> >> @@ -0,0 +1,45 @@
> >> +Xilinx Axi CAN/Zynq CANPS controller Device Tree Bindings
> >> +---------------------------------------------------------
> >> +
> >> +Required properties:
> >> +- compatible              : Should be "xlnx,zynq-can-1.00.a" for Zynq
> CAN
> >> +                    controllers and "xlnx,axi-can-1.00.a" for Axi CAN
> >> +                    controllers.
> >> +- reg                     : Physical base address and size of the Axi
> CAN/Zynq
> >> +                    CANPS registers map.
> >> +- interrupts              : Property with a value describing the interrupt
> >> +                    number.
> >> +- interrupt-parent        : Must be core interrupt controller
> >> +- clock-names             : List of input clock names - "ref_clk",
> "aper_clk"
> >
> > Let's reconsider these names. These are rather Zynq specific names.
> > Does the IP documentation use these as well? The names should match
> > the naming used for the IP, rather than the SOC. Is this the correct data
> sheet:
> >
> http://www.xilinx.com/support/documentation/ip_documentation/axi_can
> /v
> > 1_03_a/ds791_axi_can.pdf ? According to that the names should rather
> > be 's_axi_aclk' and 'can_clk', IMHO.
> >
> >     Sören
> >
>
> And when renaming stuff anyway:
>
> +
> +#define DRIVER_NAME  "XILINX_CAN"
> +
>
> should be changed to

Ok Will do

Regards,
Kedar.

>
> +
> +#define DRIVER_NAME  "xilinx_can"
> +
>
> Regards,
> Oliver
>



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