From mboxrd@z Thu Jan  1 00:00:00 1970
From: Minkyu Kang <mk7.kang@samsung.com>
Date: Tue, 17 Feb 2015 20:50:36 +0900
Subject: [U-Boot] [PATCH v2 07/11] Exynos542x: cache: Disable
 clean/evict push to external
In-Reply-To: <1422951540-11962-8-git-send-email-akshay.s@samsung.com>
References: <1422951540-11962-1-git-send-email-akshay.s@samsung.com>
 <1422951540-11962-8-git-send-email-akshay.s@samsung.com>
Message-ID: <54E32B0C.5050903@samsung.com>
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To: u-boot@lists.denx.de

Hi,

On 03/02/15 17:18, Akshay Saraswat wrote:
> L2 Auxiliary Control Register provides configuration
> and control options for the L2 memory system. Bit 3
> of L2ACTLR stands for clean/evict push to external.
> Setting bit 3 disables clean/evict which is what
> this patch intends to do.
> 
> Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
> Reviewed-by: Simon Glass <sjg@chromium.org>
> Tested-by: Simon Glass <sjg@chromium.org>
> ---
> Changes since v1:
> 	- Added Reviewed-by & Tested-by.
> 
>  arch/arm/cpu/armv7/exynos/soc.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/arch/arm/cpu/armv7/exynos/soc.c b/arch/arm/cpu/armv7/exynos/soc.c
> index 8c7d7d8..7268b9b 100644
> --- a/arch/arm/cpu/armv7/exynos/soc.c
> +++ b/arch/arm/cpu/armv7/exynos/soc.c
> @@ -45,6 +45,15 @@ static void exynos5_set_l2cache_params(void)
>  		CACHE_DATA_RAM_LATENCY;
>  
>  	asm volatile("mcr p15, 1, %0, c9, c0, 2\n" : : "r"(val));
> +
> +#ifdef CONFIG_EXYNOS5420

I think you can use proid_is.. instead of ifdef

> +	/* Read CP15 L2ACTLR value */
> +	asm volatile("mrc	p15, 1, %0, c15, c0, 0" : "=r" (val));
> +	/* Disable clean/evict push to external */
> +	val |= (0x1 << 3);
> +	/* Write new vlaue to L2ACTLR */
> +	asm volatile("mcr	p15, 1, %0, c15, c0, 0" : : "r" (val));
> +#endif
>  }
>  
>  /*
> 

Thanks,
Minkyu Kang.