linux-kernel - Re: [PATCH v2] arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H and RZ/V2N EVKs

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Message-ID: <CAMuHMdWaoToq0ZHx5_nFCx0iL4B2PUHRkegm5Vy3K+5MG2YSrg@mail.gmail.com>
Date: Wed, 2 Jul 2025 15:12:44 +0200
From: Geert Uytterhoeven <geert@...ux-m68k.org>
To: Prabhakar <prabhakar.csengg@...il.com>
Cc: Magnus Damm <magnus.damm@...il.com>, Rob Herring <robh@...nel.org>, 
	Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, 
	linux-renesas-soc@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org, Biju Das <biju.das.jz@...renesas.com>, 
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>, 
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: Re: [PATCH v2] arm64: dts: renesas: Add CN15 eMMC and SD overlays for
 RZ/V2H and RZ/V2N EVKs

Hi Prabhakar,

On Fri, 27 Jun 2025 at 21:37, Prabhakar <prabhakar.csengg@...il.com> wrote:
> From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
>
> Introduce device tree overlays for supporting the eMMC (RTK0EF0186B02000BJ)
> and microSD (RTK0EF0186B01000BJ) sub-boards connected via the CN15
> connector on the RZ/V2H and RZ/V2N evaluation kits.
>
> These overlays enable SDHI0 with appropriate pin control settings, power
> regulators, and GPIO handling. Both sub-boards are supported using shared
> overlay files that can be applied to either EVK due to their identical
> connector layout and interface support.
>
> To support this, new DT overlay files are added:
> - `rzv2-evk-cn15-emmc.dtso` for eMMC
> - `rzv2-evk-cn15-sd.dtso` for microSD
>
> Additionally, the base DTS files for both EVKs are updated to include a
> fixed 1.8V regulator (`reg_1p8v`) needed by the eMMC sub-board and
> potential future use cases such as HDMI output.
>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
> ---
> v1->v2:
> - Dropped patch 2/3 from previous series as that has been merged.
> - Dropped adding alias in base DTS instead added in overlay.
> - Switched to using single overlay files for both RZ/V2H and RZ/V2N EVKs
>   instead of separate overlays for each EVK.
> - Used RZG2L_GPIO and RZG2L_PORT_PINMUX to avoid using SoC specific
>   macros.

Thanks for the update!

> --- a/arch/arm64/boot/dts/renesas/Makefile
> +++ b/arch/arm64/boot/dts/renesas/Makefile
> @@ -161,8 +161,16 @@ r9a09g047e57-smarc-cru-csi-ov5645-dtbs := r9a09g047e57-smarc.dtb r9a09g047e57-sm
>  dtb-$(CONFIG_ARCH_R9A09G047) += r9a09g047e57-smarc-cru-csi-ov5645.dtb
>
>  dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk.dtb
> +dtb-$(CONFIG_ARCH_R9A09G056) += rzv2-evk-cn15-emmc.dtbo
> +r9a09g056n48-rzv2-evk-cn15-emmc.dts := r9a09g056n48-rzv2n-evk.dtb rzv2-evk-cn15-emmc.dtbo

.dts?

I take it you meant:

    +r9a09g056n48-rzv2n-evk-cn15-emmc-dtbs :=
r9a09g056n48-rzv2n-evk.dtb rzv2-evk-cn15-emmc.dtbo
    +dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk-cn15-emmc.dtb

> +dtb-$(CONFIG_ARCH_R9A09G056) += rzv2-evk-cn15-sd.dtbo
> +r9a09g056n48-rzv2-evk-cn15-sd.dts := r9a09g056n48-rzv2n-evk.dtb rzv2-evk-cn15-sd.dtbo

    +r9a09g056n48-rzv2n-evk-cn15-sd-dtbs := r9a09g056n48-rzv2n-evk.dtb
rzv2-evk-cn15-sd.dtbo
    +dtb-$(CONFIG_ARCH_R9A09G056) += r9a09g056n48-rzv2n-evk-cn15-sd.dtb

>  dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk.dtb
> +dtb-$(CONFIG_ARCH_R9A09G057) += rzv2-evk-cn15-emmc.dtbo
> +r9a09g057h44-rzv2-evk-cn15-emmc.dts := r9a09g057h44-rzv2h-evk.dtb rzv2-evk-cn15-emmc.dtbo

    +r9a09g057h44-rzv2h-evk-cn15-emmc-dtbs :=
r9a09g057h44-rzv2h-evk.dtb rzv2-evk-cn15-emmc.dtbo
    +dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-emmc.dtb

> +dtb-$(CONFIG_ARCH_R9A09G057) += rzv2-evk-cn15-sd.dtbo
> +r9a09g057h44-rzv2-evk-cn15-sd.dts := r9a09g057h44-rzv2h-evk.dtb rzv2-evk-cn15-sd.dtbo

    +r9a09g057h44-rzv2h-evk-cn15-sd-dtbs := r9a09g057h44-rzv2h-evk.dtb
rzv2-evk-cn15-sd.dtbo
    +dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h44-rzv2h-evk-cn15-sd.dtb

>  dtb-$(CONFIG_ARCH_R9A09G057) += r9a09g057h48-kakip.dtb
>
>  dtb-$(CONFIG_ARCH_RCAR_GEN3) += draak-ebisu-panel-aa104xd12.dtbo

Reviewed-by: Geert Uytterhoeven <geert+renesas@...der.be>
i.e. will queue in renesas-devel for v6.17, with the above fixed.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-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