From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Chou <thomas@wytron.com.tw>
Date: Wed, 14 Oct 2015 09:48:21 +0800
Subject: [U-Boot] [PATCH v4] nios2: convert dma_alloc_coherent to use
 malloc_cache_aligned
In-Reply-To: <561C4DB1.9090502@wytron.com.tw>
References: <1444013823-11909-1-git-send-email-thomas@wytron.com.tw>
 <201510121232.56484.marex@denx.de> <561BADA7.1050008@wytron.com.tw>
 <201510121546.14072.marex@denx.de> <561C4DB1.9090502@wytron.com.tw>
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To: u-boot@lists.denx.de

Hi Marek,

>>> On 10/12/2015 06:32 PM, Marek Vasut wrote:
>>>> Wouldn't invalidate_dcache_range() be enough here ? You don't care
>>>> about
>>>> the data in the newly allocated area at this point I guess -- either
>>>> you
>>>> fill them in and then flush, for DMA from CPU to device OR you receive
>>>> data from device to CPU and then you invalidate this buffer again.

Thanks a lot for your suggestion. I added invalidate_dcache_range() 
which will check if the initda instruction is supported by the nios2 cpu.

Best regards,
Thomas