On Sun, Dec 7, 2014 at 11:03 PM, Maxime Ripard <[email protected]> wrote: > On Wed, Dec 03, 2014 at 02:36:04PM +0800, Chen-Yu Tsai wrote: >> mmc2 is available on port C. Add a pinmux setting for usual 4 bit >> wide bus, as well as one with the 4 extra pins for 8 bit wide bus. >> >> Signed-off-by: Chen-Yu Tsai <[email protected]> >> Signed-off-by: Andreas Färber <[email protected]> >> --- >> arch/arm/boot/dts/sun9i-a80.dtsi | 15 +++++++++++++++ >> 1 file changed, 15 insertions(+) >> >> diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi >> b/arch/arm/boot/dts/sun9i-a80.dtsi >> index f5b5645..fc866d8 100644 >> --- a/arch/arm/boot/dts/sun9i-a80.dtsi >> +++ b/arch/arm/boot/dts/sun9i-a80.dtsi >> @@ -466,6 +466,21 @@ >> allwinner,pull = <0>; >> }; >> >> + mmc2_pins: mmc2 { >> + allwinner,pins = "PC6","PC7","PC8","PC9", >> + "PC10","PC11"; >> + allwinner,function = "mmc2"; >> + allwinner,drive = <2>; >> + allwinner,pull = <1>; >> + }; >> + >> + mmc2_8bit_pins: mmc2_8bit { >> + allwinner,pins = "PC12","PC13","PC14","PC15"; >> + allwinner,function = "mmc2"; >> + allwinner,drive = <2>; >> + allwinner,pull = <1>; >> + }; >> + > > Hmmm, how is that 8 bits? There's only 4 pins here.
The 8bit setting only includes the upper 4 bits. Using both settings together you get an 8 bit bus, along with CMD and CLK pins, for a total of 10 pins. Or is this the wrong way? ChenYu -- You received this message because you are subscribed to the Google Groups "linux-sunxi" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
