[U-Boot] [PATCH v2] i2c: muxes: pca954x: Add support for GPIO reset line

[Heiko Schocher <hs@denx.de>]

Hallo Moritz,

Am 12.09.2017 um 06:27 schrieb Heiko Schocher:
> Hello Moritz,
>
> Am 11.09.2017 um 20:19 schrieb Moritz Fischer:
>> This commit adds support for GPIO reset lines matching the
>> common linux "reset-gpios" devicetree binding.
>>
>> Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
>> ---
>>
>> Changes from v1:
>> - Simon's feedback on ifdef vs IS_ENABLED()
>>
>> ---
>>   drivers/i2c/muxes/pca954x.c | 42 +++++++++++++++++++++++++++++++++++++++++-
>>   1 file changed, 41 insertions(+), 1 deletion(-)
>
> Reviewed-by: Heiko Schocher <hs@denx.de>

Hmm.. your patch

http://patchwork.ozlabs.org/patch/812541/

breaks the mvebu travis build, see:

https://travis-ci.org/hsdenx/u-boot-i2c/jobs/274457946

for example:
        arm:  +   turris_omnia
+drivers/i2c/muxes/pca954x.c: In function ?pca954x_probe?:
+drivers/i2c/muxes/pca954x.c:120:10: error: ?struct pca954x_priv? has no member named ?gpio_mux_reset?
+     &priv->gpio_mux_reset, GPIOD_IS_OUT);
+          ^~

but your patch seems to do it correct:

+	if (IS_ENABLED(CONFIG_DM_GPIO)) {

Hmm... I know Simon suggested exactly this change ... but this seems
to produce errors here ... when I look into the ".config" file after

"make turris_omnia_defconfig"

I see:

# CONFIG_DM_GPIO is not set

Hmm... using

#ifdef CONFIG_DM_GPIO

instead "if (IS_ENABLED(CONFIG_DM_GPIO)) {" and it compiles clean.

So it seems we have a problem here with "IS_ENABLED()" ...

@Simon, Masahiro: any ideas?

bye,
Heiko
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