From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stefan Roese <sr@denx.de>
Date: Thu, 27 Sep 2007 07:31:00 +0200
Subject: [U-Boot-Users] [PATCH] 85xx io out functions need sync after
	write.
In-Reply-To: <11908425541324-git-send-email-Ed.Swarthout@freescale.com>
References: <11908425541324-git-send-email-Ed.Swarthout@freescale.com>
Message-ID: <200709270731.01164.sr@denx.de>
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To: u-boot@lists.denx.de

On Wednesday 26 September 2007, Ed Swarthout wrote:
> This fixes the mc146818 rtc_read/write functions for 85xx.
>
> Signed-off-by: Ed Swarthout <Ed.Swarthout@freescale.com>
> ---
>
>  cpu/mpc85xx/start.S |    5 +++++
>  1 files changed, 5 insertions(+), 0 deletions(-)
>
> diff --git a/cpu/mpc85xx/start.S b/cpu/mpc85xx/start.S
> index 2c98c2a..5d65190 100644
> --- a/cpu/mpc85xx/start.S
> +++ b/cpu/mpc85xx/start.S
> @@ -701,6 +701,7 @@ in8:
>  	.globl	out8
>  out8:
>  	stb	r4,0x0000(r3)
> +	sync

Another way would be to use the out_be32() and friends functions defined in 
asm-ppc/io.h. They already have the sync/barrier included and are recommened 
for accessing peripheral devices.

Best regards,
Stefan

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