On Thursday, August 20, 2015 at 11:55:02 PM, Dinh Nguyen wrote:
+CC: Simon Glass
Hi Dinh,
On Thu, Aug 20, 2015 at 12:32 AM, Marek Vasut marex@denx.de wrote:
On Thursday, August 20, 2015 at 07:28:02 AM, Chin Liang See wrote:
Hi,
On Wed, 2015-08-19 at 14:36 +0000, marex@denx.de wrote:
On Wednesday, August 19, 2015 at 10:21:17 AM, Chin Liang See wrote:
Hi,
Hi again,
On Wed, 2015-08-19 at 02:41 +0000, marex@denx.de wrote:
On Wednesday, August 19, 2015 at 07:54:50 AM, Chin Liang See wrote: > Enable SDMMC calibration to determine the best setting for > drvsel and smpsel. It will be triggered whenever there is > a change of card frequency and bus width. This is to ensure > reliable transmission between the controller and the card. > > Signed-off-by: Chin Liang See clsee@altera.com > Cc: Dinh Nguyen dinguyen@opensource.altera.com
I think there's something wrong with your git scripts, I did not get this email.
You're not getting quite a lot of email I think. Could it be that altera has some issues with their mail system after some 300 patches went through your mailbox ? You sure you're not being filtered ? :b
> Cc: Pavel Machek pavel@denx.de > Cc: Marek Vasut marex@denx.de > Cc: Wolfgang Denk wd@denx.de > Cc: Stefan Roese sr@denx.de > Cc: Tom Rini trini@konsulko.com > ---
[...]
Thanks. I was curious, is this really socfpga specific or can this calibration be used on dwmmc in general -- thus on exynos and rockchip systems -- as well? If it's generic to dwmmc, this should be moved into the dwmmc core code. Also, I am CCing Simon, he's been plumbing in the DWMMC recently.
I didn't see you explicitly add Simon to the thread. Doing it here..
I am not sure. But definitely we can make the calibration common enough if they required the calibration too. Let wait feedback from Simon.
I know that the linux driver for the DW MMC for SoCFGPA, Exynos and Rockchip are using the drvsel and smpsel parameters. But I also think these parameters can be different for different types of SD card. Are you sure this function will cover those cases?
If we're doing the calibration, we should do it correctly :)