Hello,

This series implements support for toggling SD bus signal voltage by
GPIO pin.

This series has been tested on AST2600-A2 EVB with APLL and 200MHz HCLK
clock source with sdr104, sdr50, sdr25, sdr12 and high speed mode. 
This series were also be tested on AST2600-A1 EVB and AST2500 EVB that
don't have the design of signal voltage toggling by GPIO.

Please help to review.

Regards,
Steven

Steven Lee (2):
  dt-bindings: mmc: sdhci-of-aspeed: Add power-gpio and
    power-switch-gpio
  mmc: sdhci-of-aspeed: Support toggling SD bus signal voltage by GPIO

 .../devicetree/bindings/mmc/aspeed,sdhci.yaml |  25 +++
 drivers/mmc/host/sdhci-of-aspeed.c            | 155 ++++++++++++++++--
 2 files changed, 162 insertions(+), 18 deletions(-)

-- 
2.17.1