On 10/22/14, 10:45 AM, Doug Anderson wrote:
> Dinh,
>
> (without the HTML mail this time, sorry)
>
> On Tue, Oct 21, 2014 at 11:48 AM, Dinh Nguyen
> <dinguyen@xxxxxxxxxxxxxxxxxxxxx> wrote:
>> On 10/21/2014 12:10 PM, Steffen Trumtrar wrote:
>>> Hi!
>>>
>>> On Tue, Oct 21, 2014 at 11:15:10AM -0500, dinguyen@xxxxxxxxxxxxxxxxxxxxx wrote:
>>>> From: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
>>>>
>>>> Without this patch, the booting the SOCFPGA platform would hang at the
>>>> SDMMC driver loading. The issue, debugged by Doug Anderson, turned out
>>>> to be that the GPIO bank used by the SD card-detect was not set to
>>>> status="okay".
>>>>
>>>> Suggested-by: Doug Anderson <dianders@xxxxxxxxxxxx>
>>>> Signed-off-by: Dinh Nguyen <dinguyen@xxxxxxxxxxxxxxxxxxxxx>
>>>> ---
>>>> v3: Correctly degugged the issue to be a gpio node not having status="okay"
>>>> ---
>>>> arch/arm/boot/dts/socfpga_cyclone5_socdk.dts | 6 ++++++
>>>> 1 file changed, 6 insertions(+)
>>>>
>>>> diff --git a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>>>> index d7296a5..03a3745 100644
>>>> --- a/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>>>> +++ b/arch/arm/boot/dts/socfpga_cyclone5_socdk.dts
>>>> @@ -37,6 +37,12 @@
>>>> */
>>>> ethernet0 = &gmac1;
>>>> };
>>>> +
>>>> + soc {
>>>> + gpio@ff709000 {
>>>> + status = "okay";
>>>> + };
>>>> + };
>
> I haven't dug into the details you provided about the GPIO
> infrastructure of socfpga, but it does seem like it might be nice to
> some easier way to reference things in
> "arch/arm/boot/dts/socfpga.dtsi".
>
> Looking at other examples they call the "gpio@ff708000" "gpio0" and
> the sub node something like "porta". Given that this is the only
> reference to the GPIO, it seems like now would be the time to change
> it.
Yeah...I like your idea. Let met get a new patch for that...
Thanks,
Dinh
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