[PATCH] arm64: dts: renesas: r8a779g3: Set VDDQ18_25_AVB voltage on Retronix R-Car V4H Sparrow Hawk EVTB1

[PATCH] arm64: dts: renesas: r8a779g3: Set VDDQ18_25_AVB voltage on Retronix R-Car V4H Sparrow Hawk EVTB1

[Marek Vasut]

The Retronix R-Car V4H Sparrow Hawk EVTB1 uses 1V8 IO voltage supply
for VDDQ18_25_AVB power rail. Update the AVB0 pinmux to reflect the
change in IO voltage. Since the VDDQ18_25_AVB power rail is shared,
all four AVB0, AVB1, AVB2, TSN0 PFC/GPIO POC[7..4] registers have to
be configured the same way. As the EVTA1 boards are from a limited run
and generally not available, update the DT to make it compatible with
EVTB1 IO voltage settings.

Fixes: a719915e76f2 ("arm64: dts: renesas: r8a779g3: Add Retronix R-Car V4H Sparrow Hawk board support")
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
---
Cc: Conor Dooley <conor+dt@kernel.org>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Krzysztof Kozlowski <krzk+dt@kernel.org>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Rob Herring <robh@kernel.org>
Cc: devicetree@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
---
 arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
index 89c61ba0e206..f4f845801ac9 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
+++ b/arch/arm64/boot/dts/renesas/r8a779g3-sparrow-hawk.dts
@@ -608,6 +608,10 @@ pins-mii {
 			drive-strength = <21>;
 		};
 
+		pins-vddq18-25-avb {
+			pins = "PIN_VDDQ_AVB0", "PIN_VDDQ_AVB1", "PIN_VDDQ_AVB2", "PIN_VDDQ_TSN0";
+			power-source = <1800>;
+		};
 	};
 
 	/* Page 28 / CANFD_IF */
-- 
2.47.2

Re: [PATCH] arm64: dts: renesas: r8a779g3: Set VDDQ18_25_AVB voltage on Retronix R-Car V4H Sparrow Hawk EVTB1

[Geert Uytterhoeven]

On Wed, 6 Aug 2025 at 21:28, Marek Vasut
<marek.vasut+renesas@mailbox.org> wrote:
> The Retronix R-Car V4H Sparrow Hawk EVTB1 uses 1V8 IO voltage supply
> for VDDQ18_25_AVB power rail. Update the AVB0 pinmux to reflect the
> change in IO voltage. Since the VDDQ18_25_AVB power rail is shared,
> all four AVB0, AVB1, AVB2, TSN0 PFC/GPIO POC[7..4] registers have to
> be configured the same way. As the EVTA1 boards are from a limited run
> and generally not available, update the DT to make it compatible with
> EVTB1 IO voltage settings.
>
> Fixes: a719915e76f2 ("arm64: dts: renesas: r8a779g3: Add Retronix R-Car V4H Sparrow Hawk board support")
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v6.18.

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