From nobody Thu Nov 14 18:04:47 2024 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8C847C7EE31 for ; Wed, 1 Mar 2023 09:55:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229953AbjCAJzz (ORCPT ); Wed, 1 Mar 2023 04:55:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229871AbjCAJzi (ORCPT ); Wed, 1 Mar 2023 04:55:38 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E6236366AD; Wed, 1 Mar 2023 01:55:36 -0800 (PST) Received: from IcarusMOD.eternityproject.eu (2-237-20-237.ip236.fastwebnet.it [2.237.20.237]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id 1FCE36602124; Wed, 1 Mar 2023 09:55:34 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1677664534; bh=2d8a1s6Yhde89pXYtEnq08v+ES25mvl579PIaEXQyEw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=dV1Y8hUMxFxnT8si4HLY2rJ3SBPrJOLXxbctFDlQHKUnmFzEFPmkKbp7jAiwUK8+P syje2iCgft1dTVDo2IoWm7MeaB8+NBw2FKNzO+RyD2rBL2+5h4BOm50Hom67nAwa87 JiB5kCdpxCBpihHOT28dFjoYfebX5qSxw+j3sZ+z9M1Ef+h0LPF6oGGAVWW05THuPD gzGSp9hwuWBr5BOtsa/SATn2K6q58g/b/DRTu+aDetAab6soHlpjYcR8pygCKIKtEF Ifahfo7cy7/Ca1U9tmkULSlTSFqugDzdHECHaepiszG1ItUZtazmlkjVTbsbZlcB68 o4990U0jX0nxQ== From: AngeloGioacchino Del Regno To: matthias.bgg@gmail.com Cc: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, angelogioacchino.delregno@collabora.com, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, wenst@chromium.org Subject: [PATCH v4 08/19] arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain Date: Wed, 1 Mar 2023 10:55:12 +0100 Message-Id: <20230301095523.428461-9-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230301095523.428461-1-angelogioacchino.delregno@collabora.com> References: <20230301095523.428461-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The mfg_ref_sel clock is a mux used to switch between different "safe" (and slower) clock sources for the GPU: this is used during MFGPLL reconfiguration and eventually during idling at very low frequencies. This clock getting turned off means that the GPU will occasionally be unclocked, producing obvious consequences such as system crash or unpredictable behavior: assigning it to the top level MFG power domain will make sure that this stays on at all times during any operation on the MFG domain (only GPU-related transactions). Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Chen-Yu Tsai --- arch/arm64/boot/dts/mediatek/mt8192.dtsi | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts= /mediatek/mt8192.dtsi index 34631adc52c6..a29cdff8a095 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi @@ -499,8 +499,9 @@ power-domain@MT8192_POWER_DOMAIN_CONN { =20 power-domain@MT8192_POWER_DOMAIN_MFG0 { reg =3D ; - clocks =3D <&topckgen CLK_TOP_MFG_PLL_SEL>; - clock-names =3D "mfg"; + clocks =3D <&topckgen CLK_TOP_MFG_PLL_SEL>, + <&topckgen CLK_TOP_MFG_REF_SEL>; + clock-names =3D "mfg", "alt"; #address-cells =3D <1>; #size-cells =3D <0>; #power-domain-cells =3D <1>; --=20 2.39.2