From: marex@denx•de (Marek Vasut)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH] ARM: dts: imx6sl-evk: Add an entry for MX6SL_PAD_ECSPI1_SS0__GPIO4_IO11
Date: Fri, 11 Apr 2014 14:15:52 +0200 [thread overview]
Message-ID: <201404111415.52225.marex@denx.de> (raw)
In-Reply-To: <1397218179-3533-1-git-send-email-festevam@gmail.com>
On Friday, April 11, 2014 at 02:09:39 PM, Fabio Estevam wrote:
> From: Fabio Estevam <fabio.estevam@freescale•com>
>
> In case the bootloader has incorrectly configured the ALT mode of
> MX6SL_PAD_ECSPI1_SS0 pad, we end up with the following probe error:
>
> m25p80 spi0.0: found mr25h256, expected m25p32
> m25p80 spi0.0: mr25h256 (32 Kbytes)
>
> In order to avoid this issue, add an entry for MX6SL_PAD_ECSPI1_SS0 pad, so
> that kernel configures the ECSPI chip select as GPIO functionality, which
> results in correct SPI NOR probe.
>
> Signed-off-by: Fabio Estevam <fabio.estevam@freescale•com>
> ---
> arch/arm/boot/dts/imx6sl-evk.dts | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/boot/dts/imx6sl-evk.dts
> b/arch/arm/boot/dts/imx6sl-evk.dts index 864d8df..a8d9a93 100644
> --- a/arch/arm/boot/dts/imx6sl-evk.dts
> +++ b/arch/arm/boot/dts/imx6sl-evk.dts
> @@ -282,6 +282,7 @@
> MX6SL_PAD_ECSPI1_MISO__ECSPI1_MISO 0x100b1
> MX6SL_PAD_ECSPI1_MOSI__ECSPI1_MOSI 0x100b1
> MX6SL_PAD_ECSPI1_SCLK__ECSPI1_SCLK 0x100b1
> + MX6SL_PAD_ECSPI1_SS0__GPIO4_IO11
0x80000000
Doesn't 0x80000000 mean "do not configure this pin, leave it as it was
configured before" ?
Best regards,
Marek Vasut
next prev parent reply other threads:[~2014-04-11 12:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-11 12:09 [PATCH] ARM: dts: imx6sl-evk: Add an entry for MX6SL_PAD_ECSPI1_SS0__GPIO4_IO11 Fabio Estevam
2014-04-11 12:15 ` Marek Vasut [this message]
2014-04-11 12:18 ` Fabio Estevam
2014-04-13 8:05 ` Shawn Guo
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