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Date: Wed, 25 Jul 2012 13:58:50 +0800
From: Huang Shijie <b32955@freescale.com>
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To: Fabio Estevam <festevam@gmail.com>
Subject: Re: [PATCH 2/2] mtd: nand: Select MXS_DMA for MTD_NAND_GPMI_NAND
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Cc: Fabio Estevam <fabio.estevam@freescale.com>,
 Artem.Bityutskiy@linux.intel.com, linux-mtd@lists.infradead.org,
 kernel@pengutronix.de, shawn.guo@linaro.org, dwmw2@infradead.org
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=E4=BA=8E 2012=E5=B9=B407=E6=9C=8825=E6=97=A5 00:15, Fabio Estevam =E5=86=
=99=E9=81=93:
> From: Fabio Estevam<fabio.estevam@freescale.com>
>
> MTD_NAND_GPMI_NAND driver needs MXS_DMA to be selected, otherwise the f=
ollowing error happens
> for imx_v6_v7_defconfig:
>
> drivers/built-in.o: In function `gpmi_dma_filter':
> clk-fixed-factor.c:(.text+0xb124c): undefined reference to `mxs_dma_is_=
apbh'
> make: *** [vmlinux] Error 1
>
> Signed-off-by: Fabio Estevam<fabio.estevam@freescale.com>
> ---
>   drivers/mtd/nand/Kconfig |    1 +
>   1 files changed, 1 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
> index b40e172..2062ee9 100644
> --- a/drivers/mtd/nand/Kconfig
> +++ b/drivers/mtd/nand/Kconfig
> @@ -463,6 +463,7 @@ config MTD_NAND_NANDSIM
>   config MTD_NAND_GPMI_NAND
>           bool "GPMI NAND Flash Controller driver"
>           depends on MTD_NAND&&  (SOC_IMX23 || SOC_IMX28 || SOC_IMX6Q)
> +	select MXS_DMA
>           help
>   	 Enables NAND Flash support for IMX23/28/6.
>   	 The GPMI controller is very powerful, with the help of BCH
thanks, but please see this thread.

http://comments.gmane.org/gmane.linux.ports.arm.kernel/146232

Huang Shijie