On 01/15/2014 01:23 AM, Olof Johansson wrote:
On Tue, Jan 14, 2014 at 7:58 AM, Kevin Hilman <khilman@xxxxxxxxxx> wrote:
On Thu, Jan 9, 2014 at 6:35 AM, Zhangfei Gao <zhangfei.gao@xxxxxxxxxx> wrote:
Suggested by Jaehoon: Use slot-gpio to handle cd-gpio
Add function dw_mci_of_get_cd_gpio to check "cd-gpios" from dts.
mmc_gpio_request_cd and mmc_gpio_get_cd are used to handle cd pin
Signed-off-by: Zhangfei Gao <zhangfei.gao@xxxxxxxxxx>
Acked-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
The Samsung Arndale board started failing boot from MMC root tests
starting with next-20140113 and I bisected it down to this patch.
Reverting this patch on top of next-20140114 gets Arndale booting
again from MMC. Is there some supporting DT data that's missing for
Arndale?
Rather, it looks like this patch changes behaviour and no longer uses
dw_mci_get_cd() to find out if there's a card attached -- it switches
to rely only on GPIO (see the last chunk in the patch). That seems
broken?
Oops,
Change using dw_mci_get_cd set flag DW_MMC_CARD_PRESENT.
And dw_mci_get_cd is called from mmc_rescan, a litter later than
dw_mci_probe.
Is that too late?
Thanks
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