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SubjectRe: [PATCH] cmd_dtc: Enable generation of device tree symbols
Hi,

Uwe Kleine-König <uwe@kleine-koenig.org> (2021-01-25):
> Adding the -@ switch to dtc results in the binary devicetrees containing
> a list of symbolic references and their paths. This is necessary to
> apply device tree overlays e.g. on Raspberry Pi as described on
> https://www.raspberrypi.org/documentation/configuration/device-tree.md.
>
> Obviously the downside of this change is an increas of the size of the

(as spotted by Uwe right after sending →) increase

> generated dtbs, for an arm out-of-tree build (multi_v7_defconfig):
>
> $ du -s arch/arm/boot/dts*
> 101380 arch/arm/boot/dts-pre
> 114308 arch/arm/boot/dts-post
>
> so this is in average an increase of 12.8% in size.
>
> Signed-off-by: Uwe Kleine-König <uwe@kleine-koenig.org>

Tested-by: Cyril Brulebois <cyril@debamax.com>

with:
- a Raspberry Pi CM3
- a carrier board designed after the official IO Board V3
- an RTC accessible over I²C, made functional via a DTB overlay, that
can only be enabled once bcm2710-rpi-cm3.dtb has been generated with
this patch applied.


Cheers,
--
Cyril Brulebois -- Debian Consultant @ DEBAMAX -- https://debamax.com/
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