From mboxrd@z Thu Jan  1 00:00:00 1970
From: kgene.kim@samsung.com (Kukjin Kim)
Date: Tue, 22 Apr 2014 11:18:13 +0900
Subject: [PATCH] ARM: dts: disable MDMA1 node for smdk5420 board
In-Reply-To: <001a01cf5b0c$5ddc7d60$19957820$%jun@samsung.com>
References: <001a01cf5b0c$5ddc7d60$19957820$%jun@samsung.com>
Message-ID: <021301cf5dd1$1d0ec910$572c5b30$@samsung.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Seungwon Jeon wrote:
> 

+ Javi Merino and Tushar Behera

> This change is similar to commit 3da355c(ARM: dts: Disable MDMA1 node
> for arndale-octa board). If MDMA1 region is configured with secure mode,
> it makes the boot failure with the following.
> 
> Unhandled fault: imprecise external abort (0x1406) at 0x00000000
> 
If so, how about adding the 'disabled' status in 5420 dtsi file? Then if 'enabling' is required, we can enable in each board dt file...

- Kukjin

> Signed-off-by: Seungwon Jeon <tgih.jun@samsung.com>
> ---
>  arch/arm/boot/dts/exynos5420-smdk5420.dts |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/exynos5420-smdk5420.dts
> b/arch/arm/boot/dts/exynos5420-smdk5420.dts
> index 6910485..9a48e3f 100644
> --- a/arch/arm/boot/dts/exynos5420-smdk5420.dts
> +++ b/arch/arm/boot/dts/exynos5420-smdk5420.dts
> @@ -373,4 +373,10 @@
>  			};
>  		};
>  	};
> +
> +	amba {
> +		mdma1: mdma at 11C10000 {
> +			status = "disabled";
> +		};
> +	};
>  };
> --
> 1.7.0.4