From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=185.11.138.130 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793388598; b=dv06oBTeOKN3KF+Cp60b97kcEmiWcV/Z/V3P67m91WxlOLIaFxgAPA3sjlSD8v9xltum f+F082zfZjKQuF8ptPDF7RIemO4aUllVSOdTdPB8iQ9Wamfi3Qni4DmsOPTn0G4W3Zmxw yZzKdHJCbNgkq1X9B8pGylQ32i91eGvvPZQabK2O13gF2rBV4aN3HOBDn7uOftzP81oYZ i6Vrzx3a4eXurFM0K06FEhpyD3RQJx2we+Se5xs1sWTCdeIOd1xdF81vGIo6E3zH4aiV3 yMznfZi0XOHMjd8l21p7WLlM4ZYAxCDLeN/sQwrJcuVpofQcIvFta5giAi6qrKvUbJA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793388598; h=DMARC-Filter:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding: Content-Type; bh=vPaZTew6bHfge4tOyLNLySlYKC2rw8qbkKNVjP45eiQ=; b=4V94f9Lb4Tdxqmma7zJERmivYYZiefVh0M71zZ+kjglVJ21fVrxBbYXrX4Npt68ZuX2e PUY8DDqzO/pQzup8ZYxWNNeEykvfov458zoPsybVIAX2ts4DOVAs82nbAWcHaw9T1k4qA obaF6SOtSfCDA4VOu4dEUzMp8nWzbtQAxCpqfeNU2hHfxJBkTXdzlcbwHIF2AP1KzOx16 43jsHtUvI2sojnfK4pe4USZ9/0Ankioimu2WE9rPlgwOzbPGxcSMp3lGwFMDqYW6YQxMo RaTnis2rYK+Fm21whFGe3nS03Yf/CFnTdW1iPzyJy+Bcyy7SxKe0LGSArtX6Wnjw3ig== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=sntech.de; spf=pass smtp.mailfrom=sntech.de; dkim=pass header.d=sntech.de header.i=@sntech.de header.a=rsa-sha256 header.s=gloria202408 header.b=vcu0mzRq; arc=none smtp.remote-ip=185.11.138.130 Received: from gloria.sntech.de (gloria.sntech.de [185.11.138.130]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1DD0D606A31A; Fri, 30 Oct 2026 19:29:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 1DD0D606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=sntech.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sntech.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=sntech.de header.i=@sntech.de header.a=rsa-sha256 header.s=gloria202408 header.b=vcu0mzRq DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sntech.de; s=gloria202408; h=Content-Type:Content-Transfer-Encoding:MIME-Version: References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From:Reply-To; bh=vPaZTew6bHfge4tOyLNLySlYKC2rw8qbkKNVjP45eiQ=; b=vcu0mzRqxjxJVB7xA26R21VLOx 1XuofCcoDvKjYRmwM2obB+hnUCFpJkF2LJaei8BwSJBywSI21TReldCkGn+wUdrlpC7lnPOFPVhJQ InLmBANLT+fRBAxuq/0hEXI/HTmcRD1WdeJyimQeu+GuZ+aIzaKMVUMW5u7kxr5NWsbEIeqO8r7eb 5z+MErXmfIQH1kwv44t0UWeM9iwm1+TY4B6nc5OszREoFiojcFy4mUbQ3rDmDMv1XLbd5qsr1tFQp dgsq2+G4QhKtf2FimPUBNyCXhiEmCVykMTENu6eE6MY5CF20VntzbvgM9RbUsso6Sm919olW2kuYP eLFI0hRQ==; From: Heiko Stuebner To: iav@iav.lv Cc: Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Igor Velkov Subject: Re: [PATCH] arm64: dts: rockchip: Add the GPU to Kobol Helios64 Date: Fri, 30 Oct 2026 20:29:47 +0100 Message-ID: <1937939.QCnGb9OGeP@phil> In-Reply-To: <20261011-b4-helios64-gpu-v1-1-bd83c6ecd19e@iav.lv> References: <20261011-b4-helios64-gpu-v1-1-bd83c6ecd19e@iav.lv> X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Hi, Am Samstag, 10. Oktober 2026, 23:53:01 Mitteleurop=C3=A4ische Normalzeit sc= hrieb Igor Velkov via B4 Relay: > From: Igor Velkov >=20 > The GPU core of Helios64 is supplied by U12, a Silergy SYR838 on i2c0 > at 0x41, with its VSEL pin on GPU_SLEEP_H (GPIO1_B6). Describe it as > silergy,syr828, the way vdd_cpu_b (a SYR837) is described as > silergy,syr827, and enable the GPU. >=20 > Assisted-by: LLM > Signed-off-by: Igor Velkov > --- > Schematic, sheet 7: > https://wiki.kobol.io/helios64/files/schematics/Helios64_Schematics_Rev1.= 2.pdf >=20 > Tested on mainline: panfrost probes, devfreq moves vdd_gpu from 825 mV > at 200 MHz to 1100 mV at 800 MHz, glmark2-es2-wayland under headless > weston scores 548-577 in three runs. Two of them logged one panfrost > job timeout each; the Armbian DT gave none in three runs. > --- > .../boot/dts/rockchip/rk3399-kobol-helios64.dts | 28 ++++++++++++++++= ++++++ > 1 file changed, 28 insertions(+) >=20 > diff --git a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts b/arc= h/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts > index 63ad79b4c8ac..1f50982291bf 100644 > --- a/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts > +++ b/arch/arm64/boot/dts/rockchip/rk3399-kobol-helios64.dts > @@ -339,6 +339,11 @@ &gmac { > status =3D "okay"; > }; > =20 > +&gpu { > + mali-supply =3D <&vdd_gpu>; > + status =3D "okay"; > +}; > + > &i2c0 { > clock-frequency =3D <400000>; > i2c-scl-rising-time-ns =3D <168>; > @@ -453,6 +458,25 @@ regulator-state-mem { > regulator-off-in-suspend; > }; > }; > + > + vdd_gpu: regulator@41 { > + compatible =3D "silergy,syr828"; > + reg =3D <0x41>; > + fcs,suspend-voltage-selector =3D <1>; > + pinctrl-names =3D "default"; > + pinctrl-0 =3D <&vsel2_pin>; > + regulator-name =3D "vdd_gpu"; > + regulator-always-on; > + regulator-boot-on; both of these should not be needed, as the GPU should control its regulator. (always-on and boot-on) Heiko