On Tue, Jun 6, 2017 at 2:17 PM, Stefani Seibold <stefani@xxxxxxxxxxx> wrote:
> Hi Pantelis,
>
> thanks for the suggestion. This feature is not very well documented. I
> tried this on my rasp1 running 4.12.0-rc3 and it doesn't work. My
> source is:
>
> // rapsi example
> /dts-v1/;
> /plugin/;
>
> / {
> compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
>
> fragment@0 {
> target-path = "/soc/i2s@7e203000";
> __overlay__ {
> #address-cells = <0x00000001>;
> #size-cells = <0x00000001>;
> test = "test";
> timer = <&{/soc/timer@7e0030000}>;
> };
> };
> };
>
>
> The resulting overlay is (decompiled with fdtdump):
>
> /dts-v1/;
> // magic: 0xd00dfeed
> // totalsize: 0x19a (410)
> // off_dt_struct: 0x38
> // off_dt_strings: 0x148
> // off_mem_rsvmap: 0x28
> // version: 17
> // last_comp_version: 16
> // boot_cpuid_phys: 0x0
> // size_dt_strings: 0x52
> // size_dt_struct: 0x110
>
> / {
> compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
> fragment@0 {
> target-path = "/soc/i2s@7e203000";
> __overlay__ {
> #address-cells = <0x00000001>;
> #size-cells = <0x00000001>;
> test = "test";
> timer = <0xdeadbeef>;
> };
> };
> __fixups__ {
> /soc/timer@7e0030000 = "/fragment@0/__overlay__:timer:0";
Looks like you (Pantelis had the typo) have an extra 0 in 7e0030000
compared to your original example.
Rob
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