From: Bo Shen <voice.shen@gmail.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] Adding dataflash support for at91sam9m10g45ek
Date: Mon, 14 May 2012 13:26:23 +0800 [thread overview]
Message-ID: <4FB0977F.3000404@gmail.com> (raw)
In-Reply-To: <CAOQSsQNahOtOTf6JSMa_DwXGw2mCF_pWrQYwUeAsrUULS=r+aw@mail.gmail.com>
On 5/12/2012 15:38, Thad Phetteplace wrote:
> Hello all,
>
> I am trying to add dataflash support for the at91sam9m10g45ek to a
> recent version of u-boot (2010.06 or later). I have a patched version
> of u-boot-1.3.4 from linux4sam that works, and a glance at more recent
> code seems to show dataflash supported on other at91 boards in
> versions>= 2010.06. Using the linux4sam code and other atmel boards
> as a reference, I've added dataflash support for the at91sam9m10g45ek.
> It almost works, but I'm getting occasional bad reads leading to CRC
> failures and occasionally the SPI bus stops talking completely. After
> reviewing code, spec sheets, etc... I'm at a loss as why this is
> failing. I am mostly riding on top of the existing Atmel SPI
> dataflash support already in u-boot, basically just adding some board
> specific calls to init the SPI interface. Anyone here have any ideas?
> Any known hardware issues I need to be working around? Patches I
> should be looking at?
I don't know the detail method you implemented this.
Would you please try the following patch and test again
diff --git a/include/configs/at91sam9m10g45ek.h
b/include/configs/at91sam9m10g45ek.h
index 159857d..af0611c 100644
--- a/include/configs/at91sam9m10g45ek.h
+++ b/include/configs/at91sam9m10g45ek.h
@@ -125,6 +125,14 @@
/* No NOR flash */
#define CONFIG_SYS_NO_FLASH
+/* Serial flash */
+#define CONFIG_CMD_SF
+#ifdef CONFIG_CMD_SF
+#define CONFIG_ATMEL_SPI
+#define CONFIG_SPI_FLASH
+#define CONFIG_SPI_FLASH_ATMEL
+#endif
+
/* NAND flash */
#ifdef CONFIG_CMD_NAND
#define CONFIG_NAND_ATMEL
> Thanks,
>
> Thad Phetteplace
> _______________________________________________
> U-Boot mailing list
> U-Boot at lists.denx.de
> http://lists.denx.de/mailman/listinfo/u-boot
prev parent reply other threads:[~2012-05-14 5:26 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-12 7:38 [U-Boot] Adding dataflash support for at91sam9m10g45ek Thad Phetteplace
2012-05-14 5:26 ` Bo Shen [this message]
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