On Fri, Jul 26, 2013 at 05:51:32PM +0200, Guennadi Liakhovetski wrote: > MMCIF on sh73a0 supports the UHS DDR50 mode and on the kzm9g board it can > be used with MMC VccQ = 1.8V. This patch enables them. > > Signed-off-by: Guennadi Liakhovetski <[email protected]> > --- > > This patch is correct AFAICS, but pointless on kzm9g, because (at least on > my board) th eMMC chip, installed on the board and connected to MMCIF > doesn't support DDR, so, it cannot be enabled. This patch is therefore > more of an example how these flags shall be used, than a real use case. If > it is decided to apply it, it can be applied even before patch 1/2, it > just won't have any effect at all.
Thanks, understood. At this point I prefer not to apply it as it doesn't have any effect. I am more than happy to discuss this further if others would like it applied. > > arch/arm/boot/dts/sh73a0-kzm9g-reference.dts | 1 + > arch/arm/boot/dts/sh73a0.dtsi | 1 + > 2 files changed, 2 insertions(+), 0 deletions(-) > > diff --git a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts > b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts > index b99e890..d90de01 100644 > --- a/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts > +++ b/arch/arm/boot/dts/sh73a0-kzm9g-reference.dts > @@ -191,6 +191,7 @@ > > bus-width = <8>; > vmmc-supply = <®_1p8v>; > + ddr-1v8; > status = "okay"; > }; > > diff --git a/arch/arm/boot/dts/sh73a0.dtsi b/arch/arm/boot/dts/sh73a0.dtsi > index 86e79fe..1146be8 100644 > --- a/arch/arm/boot/dts/sh73a0.dtsi > +++ b/arch/arm/boot/dts/sh73a0.dtsi > @@ -186,6 +186,7 @@ > interrupts = <0 140 0x4 > 0 141 0x4>; > reg-io-width = <4>; > + uhs-ddr50; > status = "disabled"; > }; > > -- > 1.7.2.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-sh" in > the body of a message to [email protected] > More majordomo info at http://vger.kernel.org/majordomo-info.html > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
