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Including this allows the user to write to each partition on the alternate spi chip. This dtsi follows the existing standard of using the same layout as non alt version and prepending `alt` to each partition's name. Tested by running on target and catting sysfs nodes for devdir in /sys/class/mtd/mtd*; do [[ -d $devdir && -r $devdir/name ]] || continue name=3D$(<"$devdir/name") [[ $name =3D=3D alt* ]] || continue size=3D$(<"$devdir/size") offset=3D0 [[ -r $devdir/offset ]] && offset=3D$(<"$devdir/offset") dev=3D$(basename "$devdir") printf "%s name=3D%s offset=3D0x%X size=3D0x%X\n" "$dev" "$name" \ "$offset" "$size" done mtd10 name=3Dalt-rofs offset=3D0xA00000 size=3D0x5600000 mtd11 name=3Dalt-rwfs offset=3D0x6000000 size=3D0x2000000 mtd7 name=3Dalt-u-boot offset=3D0x0 size=3D0xE0000 mtd8 name=3Dalt-u-boot-env offset=3D0xE0000 size=3D0x20000 mtd9 name=3Dalt-kernel offset=3D0x100000 size=3D0x900000 Ran dtbs check, no errors from the msx4 dts running diff between the main and alt flash layouts shows that the only diff is alt prepended to the partition labels, as expected. Signed-off-by: Marc Olberding --- .../dts/aspeed/openbmc-flash-layout-128-alt.dtsi | 32 ++++++++++++++++++= ++++ 1 file changed, 32 insertions(+) diff --git a/arch/arm/boot/dts/aspeed/openbmc-flash-layout-128-alt.dtsi b/a= rch/arm/boot/dts/aspeed/openbmc-flash-layout-128-alt.dtsi new file mode 100644 index 000000000000..08ce2eab472c --- /dev/null +++ b/arch/arm/boot/dts/aspeed/openbmc-flash-layout-128-alt.dtsi @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0+ + +partitions { + compatible =3D "fixed-partitions"; + #address-cells =3D <1>; + #size-cells =3D <1>; + + u-boot@0 { + reg =3D <0x0 0xe0000>; // 896KB + label =3D "alt-u-boot"; + }; + + u-boot-env@e0000 { + reg =3D <0xe0000 0x20000>; // 128KB + label =3D "alt-u-boot-env"; + }; + + kernel@100000 { + reg =3D <0x100000 0x900000>; // 9MB + label =3D "alt-kernel"; + }; + + rofs@a00000 { + reg =3D <0xa00000 0x5600000>; // 86MB + label =3D "alt-rofs"; + }; + + rwfs@6000000 { + reg =3D <0x6000000 0x2000000>; // 32MB + label =3D "alt-rwfs"; + }; +}; --=20 2.34.1