Re: [PATCH v2 6/8] riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK
From: Geert Uytterhoeven <geert@linux-m68k.org>
Date: 2022-08-19 08:25:54
Also in:
linux-renesas-soc, linux-riscv, lkml
Hi Prabhakar, On Mon, Aug 15, 2022 at 10:16 PM Lad, Prabhakar [off-list ref] wrote:
On Mon, Aug 15, 2022 at 8:00 PM [off-list ref] wrote:quoted
On 15/08/2022 16:14, Lad Prabhakar wrote:quoted
EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe Enable the minimal blocks required for booting the Renesas RZ/Five SMARC EVK with initramfs. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> --- v1->v2 * New patch --- arch/riscv/boot/dts/Makefile | 1 + arch/riscv/boot/dts/renesas/Makefile | 2 ++ .../boot/dts/renesas/r9a07g043f01-smarc.dts | 16 ++++++++++ .../boot/dts/renesas/rzfive-smarc-som.dtsi | 22 +++++++++++++ arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi | 32 +++++++++++++++++++ 5 files changed, 73 insertions(+) create mode 100644 arch/riscv/boot/dts/renesas/Makefile create mode 100644 arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts create mode 100644 arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsiJust to sort out some of my own confusion here - is the smarc EVK shared between your arm boards and the riscv ones? Or just the peripherals etc on the soc?RZ/Five SoC is pin compatible with RZ/G2UL Type 1 SoC (ARM64). RZ/G2UL SMARC EVK carrier board can be swapped with RZ/Five or RZ/G2UL SMARC SoM and still be used.quoted
If it is the forver, does the approach suggested here for the allwinner stuff make sense to also use for risc-v stuff with shared parts of devicetrees? https://lore.kernel.org/linux-riscv/3cd9ed5b-8348-38ac-feb1-9a7da858cebc@microchip.com/ (local)it does make sense. But I wonder where we would place the common shared dtsi that can be used by two arch's.
You can keep it under arch/arm/boot/dts/renesas/, and refer to
it from riscv as <arm64/renesas/...>.
Cfr. the symlinks under scripts/dtc/include-prefixes/arm64/ and
e.g. cros-ec-keyboard.dtsi.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds