Re: [RFC 2/2] scripts: dtc: Handle outform dtbo
From: Rob Herring <robh+dt@kernel.org>
Date: 2021-01-05 15:38:29
Also in:
linux-kbuild, lkml
On Tue, Jan 5, 2021 at 4:24 AM Viresh Kumar [off-list ref] wrote:
Update dtc compiler to accept dtbo as an outform. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- I feel that this needs to go directly to https://git.kernel.org/pub/scm/utils/dtc/dtc.git Right ? I will send it separately if the idea is accepted here.
Yes, needs to go to devicetree-compiler list. I think this came up before and IIRC David wasn't completely in agreement. I looked briefly and couldn't find the thread though... We really don't need a different extension because we could just examine the dtb to determine if it is an overlay or not. That's less obvious. We could also add meta-data to overlays defining what base they apply to. If we had that, a tool could just list all overlays that should apply to a base and we could use that info for build time applying overlays. Of course, that and a dtbo extension/format are not mutually exclusive.
quoted hunk ↗ jump to hunk
--- scripts/dtc/dtc.c | 2 ++ 1 file changed, 2 insertions(+)diff --git a/scripts/dtc/dtc.c b/scripts/dtc/dtc.c index bdb3f5945699..40fa7128b3d6 100644 --- a/scripts/dtc/dtc.c +++ b/scripts/dtc/dtc.c@@ -357,6 +357,8 @@ int main(int argc, char *argv[]) #endif } else if (streq(outform, "dtb")) { dt_to_blob(outf, dti, outversion); + } else if (streq(outform, "dtbo")) { + dt_to_blob(outf, dti, outversion); } else if (streq(outform, "asm")) { dt_to_asm(outf, dti, outversion); } else if (streq(outform, "null")) {
You also need to extend guess_type_by_name(). Rob