Messages in this thread | | | Date | Mon, 11 May 2015 20:01:01 +0800 | From | Shawn Guo <> | Subject | Re: [PATCH] imx27: dt: only map 1 Kbyte for fec registers |
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On Sat, May 09, 2015 at 10:54:30PM +0200, Philippe Reynes wrote: > According to the imx27 documentation, fec has a 1 Kbyte > memory space map, spitted in two regions of 512 bytes. > The first one for control/status registers, and the > second one for event/statistic registers. So, we don't > need to map 16 Kbyte for registers, 1 Kbyte is enough. > > Signed-off-by: Philippe Reynes <tremyfr@gmail.com> > --- > arch/arm/boot/dts/imx27.dtsi | 2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) > > diff --git a/arch/arm/boot/dts/imx27.dtsi b/arch/arm/boot/dts/imx27.dtsi > index 6951b66..56bb917 100644 > --- a/arch/arm/boot/dts/imx27.dtsi > +++ b/arch/arm/boot/dts/imx27.dtsi > @@ -533,7 +533,7 @@ > > fec: ethernet@1002b000 { > compatible = "fsl,imx27-fec"; > - reg = <0x1002b000 0x4000>; > + reg = <0x1002b000 0x400>;
No. Per MCIMX27RM.pdf, Table 2-7. AIPI2 Memory Map, it should be 4KiB.
Shawn
> interrupts = <50>; > clocks = <&clks IMX27_CLK_FEC_IPG_GATE>, > <&clks IMX27_CLK_FEC_AHB_GATE>; > -- > 1.7.4.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
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