On Tue, Jan 10, 2017 at 12:46 AM, Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> wrote: > All the controllers can have a maximum frequency of 200MHz. > > Since older SoCs cannot go that high, we cannot change the default maximum > frequency, but fortunately for us we have a property for that in the DT. > > This also has the side effect of allowing to use the MMC HS200 mode for the > boards that support it (with either 1.2v or 1.8v IOs). > > Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> > --- > arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 3 +++ > 1 file changed, 3 insertions(+), 0 deletions(-) > > diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi > index 8e149498e096..f46ae965cf5b 100644 > --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi > +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi > @@ -332,6 +332,7 @@ > resets = <&ccu RST_BUS_MMC0>; > reset-names = "ahb"; > interrupts = <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>; > + max-frequency = <200000000>; You also have to set one of MMC_CAP2_HS200* in the driver, or mmc-hs200-1_8v or mmc-hs200-1_2v in the device tree to actually use HS200, right? ChenYu > status = "disabled"; > #address-cells = <1>; > #size-cells = <0>; > @@ -345,6 +346,7 @@ > resets = <&ccu RST_BUS_MMC1>; > reset-names = "ahb"; > interrupts = <GIC_SPI 61 IRQ_TYPE_LEVEL_HIGH>; > + max-frequency = <200000000>; > status = "disabled"; > #address-cells = <1>; > #size-cells = <0>; > @@ -358,6 +360,7 @@ > resets = <&ccu RST_BUS_MMC2>; > reset-names = "ahb"; > interrupts = <GIC_SPI 62 IRQ_TYPE_LEVEL_HIGH>; > + max-frequency = <200000000>; > status = "disabled"; > #address-cells = <1>; > #size-cells = <0>; > -- > git-series 0.8.11 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
