Adam,

Since standards are determined by SD assotication, I think that the
number of implementations according to the specifications has increased
recently.

https://www.sdcard.org/downloads/pls/index.html

Because it includes DMA, I found it by greping the register.

Since the implementation of imxrt supports 2 slots, I think that it is
easier to port it considering the structure of the driver.

Takeyoshi Kikuchi


On 2020/03/08 10:52, Adam Feuer wrote:
They do look like the same register sets. Thanks for the pointer to them.
By the way, how did you find them...? :)

I have to look at both files more closely... the Sony one is about 1400
lines longer, so they seem somewhat different from each other. Have you
looked at these files at all? If so which one do you think is a better
starting point...?

cheers
adam

On Sat, Mar 7, 2020 at 3:28 PM Adam Feuer <a...@starcat.io> wrote:

Thanks. I was on my phone last night and couldn't find the right files...
I'll check out the ones you mentioned.

cheers
adam

On Fri, Mar 6, 2020 at 10:33 PM Takeyoshi Kikuchi <
kiku...@centurysys.co.jp> wrote:

No,

In addition to the board-specific parts you implemented, we need to port
the code of nuttx/arch/arm/src/cxd56xx/cxd56_sdhci.c or
nuttx/arch/arm/src/imxrt/imxrt_usdhc.c to sama5d2.



On 2020/03/07 15:15, Adam Feuer wrote:
This one?


https://github.com/apache/incubator-nuttx/blob/master/boards/arm/cxd56xx/spresense/src/cxd56_sdcard.c

On Fri, Mar 6, 2020 at 21:42 Adam Feuer <a...@starcat.io
<mailto:a...@starcat.io>> wrote:

     Do those have NuttX implementations? If so will you point me at
them?

     -adam

     On Fri, Mar 6, 2020 at 21:40 Takeyoshi Kikuchi
     <kiku...@centurysys.co.jp <mailto:kiku...@centurysys.co.jp>> wrote:

         Adam,

         Since the SDMMC controller of the SAMA5D2 series is compatible
         with the
         standard register set, I think it is better to port the
         implementation
         of SONY CXD56xx or NXP i.MXRT.

         Takeyoshi Kikuchi

         On 2020/03/07 9:29, Adam Feuer wrote:
          > Takeyoshi,
          >
          > I started a branch for SAMA5D27 SDMMC support, it's here:
          >
          >

https://github.com/starcat-io/incubator-nuttx/tree/feature/sama5d27-sdmmc-support
          >
          > I just started it, so not much progress, but I'll let you
         know if I get
          > any further.
          >
          > -adam
          > --
          > Adam Feuer <a...@starcat.io <mailto:a...@starcat.io>
         <mailto:a...@starcat.io <mailto:a...@starcat.io>>>

         --
         ---------------------------------
         Takeyoshi Kikuchi
         kiku...@centurysys.co.jp <mailto:kiku...@centurysys.co.jp>

     --
     Adam Feuer <a...@starcat.io <mailto:a...@starcat.io>>

--
Adam Feuer <a...@starcat.io <mailto:a...@starcat.io>>

--
---------------------------------
センチュリー・システムズ株式会社
ソフトウェア開発第四部
菊地 武義
kiku...@centurysys.co.jp



--
Adam Feuer <a...@starcat.io>




--
---------------------------------
Takeyoshi Kikuchi
kiku...@centurysys.co.jp

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