Messages in this thread | | | From | Linus Walleij <> | Date | Wed, 29 Aug 2018 10:50:38 +0200 | Subject | Re: [PATCH v2] pinctrl: uniphier: drop meaningless pin from SD1 pin-mux of Pro4 |
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On Sat, Aug 11, 2018 at 4:16 AM Masahiro Yamada <yamada.masahiro@socionext.com> wrote:
> The pin 327 was supposed to be used as a voltage control line for the > SD card regulator, but the SD card port1 does not support UHS-I. It > only supports 3.3V signaling, hence this pin is pointless. > > Just a note about the background. At first, hardware engineers tried > to implement the UHS for this port. Then, they needed to shrink the > silicon die size, and gave up the UHS, but forgot to remove the pin > assignment. > > Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Patch applied.
Yours, Linus Walleij
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