linux-kernel - Re: [PATCH v5] can: xilinx CAN controller support.

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Message-ID: <5316CB29.7040200@hartkopp.net>
Date:	Wed, 05 Mar 2014 07:58:49 +0100
From:	Oliver Hartkopp <socketcan@...tkopp.net>
To:	Kedareswara rao Appana <appana.durga.rao@...inx.com>
CC:	Sören Brinkmann <soren.brinkmann@...inx.com>,
	wg@...ndegger.com, mkl@...gutronix.de, michal.simek@...inx.com,
	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,
	Kedareswara rao Appana <appanad@...inx.com>
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/v1_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

+
+#define DRIVER_NAME	"xilinx_can"
+

Regards,
Oliver

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