* How about the MMC/SDIO host controller standard under Linux ?
@ 2012-03-19 2:39 peter.meng
2012-03-20 0:29 ` David Brown
0 siblings, 1 reply; 3+ messages in thread
From: peter.meng @ 2012-03-19 2:39 UTC (permalink / raw)
To: linux-kernel
HI
I see the drivers/mmc/host/sdhci.h define the common register as
describe within
Part_A2_SD_Host_Controller_Simplified_Specification_Ver3.00_Final_110225.pdf
In this case all command related access register is common .(sdhci-xxx.c)
Does this mean all sdhci-xxx.c that will support SD host controller standard ?
I see most code such as s3cmci.c ,msm_sdcc.c that has their only
private register that access by such as mmc_host_ops->request function
.
I want to know whether this mean these host controller doesn't support
SD host controller standard ?
Best Regards .
Peter Meng
mengsanshui@gmail.com
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How about the MMC/SDIO host controller standard under Linux ?
2012-03-19 2:39 How about the MMC/SDIO host controller standard under Linux ? peter.meng
@ 2012-03-20 0:29 ` David Brown
2012-03-20 1:33 ` peter.meng
0 siblings, 1 reply; 3+ messages in thread
From: David Brown @ 2012-03-20 0:29 UTC (permalink / raw)
To: peter.meng; +Cc: linux-kernel
On Mon, Mar 19, 2012 at 10:39:29AM +0800, peter.meng wrote:
> I see the drivers/mmc/host/sdhci.h define the common register as
> describe within
> Part_A2_SD_Host_Controller_Simplified_Specification_Ver3.00_Final_110225.pdf
> In this case all command related access register is common .(sdhci-xxx.c)
> Does this mean all sdhci-xxx.c that will support SD host controller standard ?
> I see most code such as s3cmci.c ,msm_sdcc.c that has their only
> private register that access by such as mmc_host_ops->request function
> .
> I want to know whether this mean these host controller doesn't support
> SD host controller standard ?
There are numerous SD host controllers that aren't SDHCI.
David
--
Sent by an employee of the Qualcomm Innovation Center, Inc.
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How about the MMC/SDIO host controller standard under Linux ?
2012-03-20 0:29 ` David Brown
@ 2012-03-20 1:33 ` peter.meng
0 siblings, 0 replies; 3+ messages in thread
From: peter.meng @ 2012-03-20 1:33 UTC (permalink / raw)
To: David Brown; +Cc: linux-kernel
Thanks David
On Tue, Mar 20, 2012 at 8:29 AM, David Brown <davidb@codeaurora.org> wrote:
> On Mon, Mar 19, 2012 at 10:39:29AM +0800, peter.meng wrote:
>
>> I see the drivers/mmc/host/sdhci.h define the common register as
>> describe within
>> Part_A2_SD_Host_Controller_Simplified_Specification_Ver3.00_Final_110225.pdf
>> In this case all command related access register is common .(sdhci-xxx.c)
>> Does this mean all sdhci-xxx.c that will support SD host controller standard ?
>
>> I see most code such as s3cmci.c ,msm_sdcc.c that has their only
>> private register that access by such as mmc_host_ops->request function
>> .
>> I want to know whether this mean these host controller doesn't support
>> SD host controller standard ?
>
> There are numerous SD host controllers that aren't SDHCI.
>
> David
>
> --
> Sent by an employee of the Qualcomm Innovation Center, Inc.
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-03-19 2:39 How about the MMC/SDIO host controller standard under Linux ? peter.meng
2012-03-20 0:29 ` David Brown
2012-03-20 1:33 ` peter.meng
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