From: Hector Palacios <hector.palacios@digi.com>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCHv5 09/14] mmc: support the DDR mode for eMMC
Date: Wed, 21 May 2014 13:52:33 +0200 [thread overview]
Message-ID: <537C9381.9010904@digi.com> (raw)
In-Reply-To: <537C0D84.70006@samsung.com>
On 05/21/2014 04:20 AM, Jaehoon Chung wrote:
> Hi, Hector.
>
> On 05/21/2014 01:37 AM, Hector Palacios wrote:
>> Hi,
>>
>> On 05/16/2014 06:59 AM, Jaehoon Chung wrote:
>>> Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
>>> Tested-by: Lukasz Majewski <l.majewski@samsung.com>
>>> Acked-by: Lukasz Majewski <l.majewski@samsung.com>
>>
>> What platforms did you test DDR mode on?
>
> I have tested DDR mode with exynos board.
>
>> I tried this on an Freescale i.MX6 based platform but the driver returned error code COM_ERR (-18) when trying to switch to any of the DDR modes. I guess the fsl_esdhc.c driver needs some adaptation for DDR to work.
>
> I didn't know how work DDR mode at fsl_esdhc.c.(If you share the host controller TRM, it's helpful to me.)
> Host controller also need to change the DDR mode.
>
> I wonder your board didn't work not to enable the DDR mode?
Thank you, yes the fsl_esdhc.c driver does not yet support enabling of DDR mode.
I think it should be easy to implement, I believe it is just a question of changing
the clock frequency.
Best regards,
--
Hector Palacios
next prev parent reply other threads:[~2014-05-21 11:52 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-16 4:59 [U-Boot] [PATCHv5 00/14] mmc: exynos: code cleanup and support DDR mode Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 01/14] arm: exynos: pinmux: add sdmmc4 gpio configratuion Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 02/14] arm: exynos: clock: Remove exynos4x12_set_mmc_clk function Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 03/14] board: trats2: Enable device tree on Trats2 Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 04/14] ARM: exynos: board: change the mmc/sd init sequence Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 05/14] ARM: exynos: clock: modify the set_mmc_clk for exynos4 Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 06/14] ARM: dts: exynos: rename from EXYNOS5_DWMMC to EXYNOS_DWMMC Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 07/14] mmc: exynos_dw_mmc: restore the property into host Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 08/14] mmc: remove the unnecessary define and fix the wrong bit control Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 09/14] mmc: support the DDR mode for eMMC Jaehoon Chung
2014-05-20 16:37 ` Hector Palacios
2014-05-21 2:20 ` Jaehoon Chung
2014-05-21 11:52 ` Hector Palacios [this message]
2014-05-23 2:20 ` Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 10/14] mmc: dw_mmc: support the DDR mode Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 11/14] ARM: dts: exnyos: enable dw-mmc controller Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 12/14] mmc: exynos_dw_mmc: enable the DDR mode Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 13/14] ARM: exynos4: enable the dwmmc configuration Jaehoon Chung
2014-05-16 4:59 ` [U-Boot] [PATCHv5 14/14] mmc: s5p_sdhci: add the s5p_sdhci_core_init function Jaehoon Chung
2014-05-16 6:53 ` [U-Boot] [PATCHv5 00/14] mmc: exynos: code cleanup and support DDR mode Minkyu Kang
2014-05-16 7:07 ` Jaehoon Chung
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