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From: Adrian Hunter <adrian.hunter@intel.com>
To: "ernest.zhang" <ernest.zhang@bayhubtech.com>,
	Ulf Hansson <ulf.hansson@linaro.org>,
	linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: chuanjin.pang@bayhubtech.com, mike.li@bayhubtech.com,
	chevron.li@bayhubtech.com, shirley.her@bayhubtech.com,
	xiaoguang.yu@bayhubtech.com, bobby.wu@bayhubtech.com
Subject: Re: [PATCH V7 2/5] mmc: sdhci: Change O2 Host HS200 mode clock frequency to 200MHz
Date: Wed, 25 Jul 2018 10:45:20 +0300	[thread overview]
Message-ID: <06a9dcec-846e-495c-4519-4af13549fe0e@intel.com> (raw)
In-Reply-To: <20180716062655.24703-2-ernest.zhang@bayhubtech.com>

On 16/07/18 09:26, ernest.zhang wrote:
> O2 SD Host HS200 mode clock frequency current is 208MHz, should be changed
> to 200MHz to meet specification.
> 
> Signed-off-by: ernest.zhang <ernest.zhang@bayhubtech.com>

You left in the misleading comment.  Fix that and add:

Acked-by: Adrian Hunter <adrian.hunter@intel.com>

> ---
> Change in V7:
> 	Change HS200 mode clock frequency from 208MHz to 200MHz to meet
> 	Specification.
> 
> Change in V1~V6:
> 	N/A
> ---
>  drivers/mmc/host/sdhci-pci-o2micro.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/mmc/host/sdhci-pci-o2micro.c b/drivers/mmc/host/sdhci-pci-o2micro.c
> index ba59db6a126c..94cf3cd75dd3 100644
> --- a/drivers/mmc/host/sdhci-pci-o2micro.c
> +++ b/drivers/mmc/host/sdhci-pci-o2micro.c
> @@ -311,7 +311,7 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
>  
>  			/* Check Whether subId is 0x11 or 0x12 */
>  			if ((scratch_32 == 0x11) || (scratch_32 == 0x12)) {
> -				scratch_32 = 0x2c280000;
> +				scratch_32 = 0x25100000;
>  
>  				/* Set Base Clock to 208MZ */

That comment is misleading now.

>  				o2_pci_set_baseclk(chip, scratch_32);
> @@ -406,7 +406,7 @@ int sdhci_pci_o2_probe(struct sdhci_pci_chip *chip)
>  					       O2_SD_PLL_SETTING, scratch_32);
>  		} else {
>  			scratch_32 &= 0x0000FFFF;
> -			scratch_32 |= 0x2c280000;
> +			scratch_32 |= 0x25100000;
>  
>  			pci_write_config_dword(chip->pdev,
>  					       O2_SD_PLL_SETTING, scratch_32);
> 


  reply	other threads:[~2018-07-25  7:47 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-16  6:26 [PATCH V7 1/5] mmc: sdhci: Add support for O2 eMMC HS200 mode ernest.zhang
2018-07-16  6:26 ` [PATCH V7 2/5] mmc: sdhci: Change O2 Host HS200 mode clock frequency to 200MHz ernest.zhang
2018-07-25  7:45   ` Adrian Hunter [this message]
2018-07-27  6:49     ` Ernest Zhang(WH)
2018-07-27  6:58       ` Adrian Hunter
2018-07-16  6:26 ` [PATCH V7 3/5] mmc: sdhci: Export sdhci tuning function symbol ernest.zhang
2018-07-25  7:46   ` Adrian Hunter
2018-07-16  6:26 ` [PATCH V7 4/5] mmc: sdhci: Add support for O2 hardware tuning ernest.zhang
2018-07-25  7:48   ` Adrian Hunter
2018-07-16  6:26 ` [PATCH V7 5/5] mmc: sdhci: Add MSI interrupt support for O2 SD host ernest.zhang
2018-07-25  7:48   ` Adrian Hunter
2018-07-25  7:44 ` [PATCH V7 1/5] mmc: sdhci: Add support for O2 eMMC HS200 mode Adrian Hunter
2018-07-30 15:05 ` Ulf Hansson

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