[U-Boot] [PATCH 1/4 v4] spi: Add Cadence QSPI DM driver used by SoCFPGA

[Dinh Nguyen]

+CC: Graham Moore

On 11/07/2014 09:26 AM, Stefan Roese wrote:
> Hi Dinh, Hi Vince!
> 
> a quick question for you:
> 
> On 07.11.2014 16:04, Marek Vasut wrote:
> 
> <snip>
> 
>>> diff --git a/drivers/spi/cadence_qspi_apb.c
>>> b/drivers/spi/cadence_qspi_apb.c new file mode 100644
>>> index 0000000..00a115f
>>> --- /dev/null
>>> +++ b/drivers/spi/cadence_qspi_apb.c
>>> @@ -0,0 +1,898 @@
>>> +/*
>>> + * Copyright (C) 2012 Altera Corporation <www.altera.com>
>>> + * All rights reserved.
>>> + *
>>> + * Redistribution and use in source and binary forms, with or without
>>> + * modification, are permitted provided that the following conditions are
>>> met: + *  - Redistributions of source code must retain the above copyright
>>> + *    notice, this list of conditions and the following disclaimer. + *
>>> - Redistributions in binary form must reproduce the above copyright + *
>>> notice, this list of conditions and the following disclaimer in the + *
>>> documentation and/or other materials provided with the distribution. + *
>>> - Neither the name of the Altera Corporation nor the
>>> + *    names of its contributors may be used to endorse or promote products
>>> + *    derived from this software without specific prior written
>>> permission. + *
>>> + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
>>> IS" + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
>>> TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
>>> PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL ALTERA
>>> CORPORATION BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
>>> EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO,
>>> PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR
>>> PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF
>>> LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING
>>> NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS
>>> SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */
>>
>> This license is kinda iffy. What is this all about please ?
> 
> Yes, I was wondering about this as well. And in the Linux kernel (Rocketboards)
> this file is dual licensed. Here an extract:
> 
> <-------
> /*
>  * Driver for Cadence QSPI Controller
>  *
>  * Copyright (C) 2012 Altera Corporation
>  *
>  * This software is available to you under a choice of one of two
>  * licenses.  You may choose to be licensed under the terms of the GNU
>  * General Public License (GPL) Version 2, available from the file
>  * COPYING in the main directory of this source tree, or the
>  * OpenIB.org BSD license below:
>  *
>  *     Redistribution and use in source and binary forms, with or
>  *     without modification, are permitted provided that the following
>  *     conditions are met:
>  *
>  *      - Redistributions of source code must retain the above
>  *        copyright notice, this list of conditions and the following
>  *        disclaimer.
>  *
>  *      - Redistributions in binary form must reproduce the above
>  *        copyright notice, this list of conditions and the following
>  *        disclaimer in the documentation and/or other materials
>  *        provided with the distribution.
>  *
>  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
>  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
>  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
>  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
>  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
>  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
>  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
>  * SOFTWARE.
>  *
>  */
> <------
> 
> Could we not just use a "plain" GPL (v2) license here as well. Especially
> since the other files in this driver are just normal GPL files.
> 
> Comments welcome.
> 

Graham recent posted to lkml a patch series for QSPI that has a plain GPLv2.

http://marc.info/?l=linux-kernel&m=141417788514196&w=2

Dinh