From: Marek Vasut <marex@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2 02/10] mx23: Document the tRAS lockout setting in memory initialization
Date: Wed, 13 Feb 2013 22:12:31 +0100 [thread overview]
Message-ID: <201302132212.31940.marex@denx.de> (raw)
In-Reply-To: <1360589756-26355-3-git-send-email-otavio@ossystems.com.br>
Dear Otavio Salvador,
> Add a comment about the tRAS lockout setting of HW_DRAM_CTL08 to
> enable the 'Fast Auto Pre-Charge' found in the memory chip. The
> setting is applied after memory initialization and it is worth
> document it.
>
> Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
> ---
> Changes in v2:
> - Extend code comment to explicit say it needs to be there.
>
> arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
> b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c index f8392f6..1952eac 100644
> --- a/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
> +++ b/arch/arm/cpu/arm926ejs/mxs/spl_mem_init.c
> @@ -119,6 +119,7 @@ static void initialize_dram_values(void)
> writel(dram_vals[i], MXS_DRAM_BASE + (4 * i));
>
> #ifdef CONFIG_MX23
> + /* Enable tRAS lockout in HW_DRAM_CTL08 ; it must be after all */
'After all'?
> writel((1 << 24), MXS_DRAM_BASE + (4 * 8));
> #endif
> }
Best regards,
Marek Vasut
next prev parent reply other threads:[~2013-02-13 21:12 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-11 13:35 [U-Boot] [PATCH v2 0/10] mx23/mxs pending patches Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 01/10] mxs: Rename CONFIG_SPL_MX28_PSWITCH_WAIT to CONFIG_SPL_MXS_PSWITCH_WAIT Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 02/10] mx23: Document the tRAS lockout setting in memory initialization Otavio Salvador
2013-02-13 21:12 ` Marek Vasut [this message]
2013-02-13 21:20 ` Otavio Salvador
2013-02-13 21:31 ` Fabio Estevam
2013-02-13 21:36 ` Otavio Salvador
2013-02-13 21:39 ` Fabio Estevam
2013-02-13 21:42 ` Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 03/10] mx23evk: Adjust DRAM control register to use full 128MB of RAM Otavio Salvador
2013-02-13 21:13 ` Marek Vasut
2013-02-13 21:21 ` Otavio Salvador
2013-02-13 21:33 ` Marek Vasut
2013-02-13 21:38 ` Otavio Salvador
2013-02-14 16:43 ` Marek Vasut
2013-02-11 13:35 ` [U-Boot] [PATCH v2 04/10] led: Use STATUS_LED_ON and STATUS_LED_OFF when calling __led_set Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 05/10] mxs: Fix iomux.h to not break build during assembly stage Otavio Salvador
2013-02-13 21:13 ` Marek Vasut
2013-02-13 21:22 ` Otavio Salvador
2013-02-13 21:34 ` Marek Vasut
2013-02-11 13:35 ` [U-Boot] [PATCH v2 06/10] mx23_olinuxino: Add support for status LED Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 07/10] usb: mxs: Disable USB Port 1 for i.MX23 Otavio Salvador
2013-02-13 21:15 ` Marek Vasut
2013-02-13 21:24 ` Otavio Salvador
2013-02-13 21:36 ` Marek Vasut
2013-02-16 21:59 ` Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 08/10] mx23evk: Enable USB support Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 09/10] mx23_olinuxino: " Otavio Salvador
2013-02-11 13:35 ` [U-Boot] [PATCH v2 10/10] mx23_olinuxino: Add ethernet support Otavio Salvador
2013-02-13 21:19 ` Marek Vasut
2013-02-13 21:25 ` Otavio Salvador
2013-02-13 21:36 ` Marek Vasut
2013-02-13 21:40 ` Otavio Salvador
2013-02-14 16:44 ` Marek Vasut
2013-02-14 18:24 ` Otavio Salvador
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