| Message ID | 20161223125213.5461-1-xypron.glpk@gmx.de (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
Le 23/12/2016 13:52, Heinrich Schuchardt a écrit : > After reading the fdt u-boot overwrites the reg property of the > memory node with <0x0 0x0 0x0 0x78000000>. > > To override this setting we have to use the property > linux,usable-memory. > > If the first 16MB of the 2GB physical memory are used by > the Linux kernel oops occur on the Odroid C2. > > For the Odroid C2 this patch replaces > [RFT PATCH] ARM64: dts: meson-gxbb: Add reserved memory zone and > usable memory range > https://lkml.org/lkml/2016/12/12/127 > > Fixes: 855960342d1e7 ARM64: dts: amlogic: add Hardkernel ODROID-C2 > CC: Neil Armstrong <narmstrong@baylibre.com> > CC: Kevin Hilman <khilman@baylibre.com> > Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> > --- > arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts > index 238fbeacd330..82ab94417940 100644 > --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts > +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts > @@ -61,7 +61,7 @@ > > memory@0 { > device_type = "memory"; > - reg = <0x0 0x0 0x0 0x80000000>; > + linux,usable-memory = <0x0 0x01000000 0x0 0x7f000000>; > }; > > usb_otg_pwr: regulator-usb-pwrs { > Hi Heinrich, Thanks a lot for testing and pushing this patch, indeed I missed this point abou u-boot overwriting reg. I will test this next week, and hopefully get these merged. Neil
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts index 238fbeacd330..82ab94417940 100644 --- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts +++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts @@ -61,7 +61,7 @@ memory@0 { device_type = "memory"; - reg = <0x0 0x0 0x0 0x80000000>; + linux,usable-memory = <0x0 0x01000000 0x0 0x7f000000>; }; usb_otg_pwr: regulator-usb-pwrs {
After reading the fdt u-boot overwrites the reg property of the memory node with <0x0 0x0 0x0 0x78000000>. To override this setting we have to use the property linux,usable-memory. If the first 16MB of the 2GB physical memory are used by the Linux kernel oops occur on the Odroid C2. For the Odroid C2 this patch replaces [RFT PATCH] ARM64: dts: meson-gxbb: Add reserved memory zone and usable memory range https://lkml.org/lkml/2016/12/12/127 Fixes: 855960342d1e7 ARM64: dts: amlogic: add Hardkernel ODROID-C2 CC: Neil Armstrong <narmstrong@baylibre.com> CC: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de> --- arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)