From nobody Thu Nov 14 18:13:25 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 700E1C64ED6 for ; Wed, 1 Mar 2023 09:56:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229958AbjCAJ4T (ORCPT ); Wed, 1 Mar 2023 04:56:19 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40972 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229896AbjCAJzj (ORCPT ); Wed, 1 Mar 2023 04:55:39 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9ADCC34F62; Wed, 1 Mar 2023 01:55:38 -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 D050D660211B; Wed, 1 Mar 2023 09:55:36 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1677664537; bh=co4SeDmQzj4uU8aYQJsjemsonD8P7POUOi2D/TyJicQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LNy8CnbOZxIoaSG9lOwDELZPZvwSOFF6ZoXE3St0Hjhbs1dq9GP2Vr9Ux4rfjgDDA c98a5Ml4ioX3aLdmuVF37c/VCxRt+/7GDBFM/Dj21pdh6dxvtdl+kKPCbKpCuLg1R8 3FQO3RGxwc3Zffx7q+wNLT8y7ajTGd6hHOXWGxCmDd2sYyxjkJ9GiNlt8jgdnJpbXM 2MDpGwx2YrkdLz6w8ibZ1vkQ2Ttg4Nv5B+h0PkTIbdaMXMSLdNwhcrB1niGm5IRuo4 5IbCQ8+tDH8EusEPQclRv9ytqM1Wt98Rnf/H0jlDjomO7qpGUyU3NQCGFYD7G+6Mzy zBPcCtltPv/SA== 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 12/19] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators Date: Wed, 1 Mar 2023 10:55:16 +0100 Message-Id: <20230301095523.428461-13-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" Add coupling for these regulators, as VSRAM_OTHER is used to power the GPU SRAM, and they have a strict voltage output relation to satisfy in order to ensure GPU stable operation. While at it, also add voltage constraint overrides for the GPU SRAM regulator "mt6359_vsram_others" so that we stay in a safe range of 0.75-0.80V. Signed-off-by: AngeloGioacchino Del Regno Reviewed-by: Chen-Yu Tsai --- arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/= boot/dts/mediatek/mt8192-asurada.dtsi index 8570b78c04a4..f858eca219d7 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi @@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg { regulator-always-on; }; =20 +&mt6359_vsram_others_ldo_reg { + regulator-min-microvolt =3D <750000>; + regulator-max-microvolt =3D <800000>; + regulator-coupled-with =3D <&mt6315_7_vbuck1>; + regulator-coupled-max-spread =3D <10000>; +}; + &mt6359_vufs_ldo_reg { regulator-always-on; }; @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 { regulator-max-microvolt =3D <800000>; regulator-enable-ramp-delay =3D <256>; regulator-allowed-modes =3D <0 1 2>; + regulator-coupled-with =3D <&mt6359_vsram_others_ldo_reg>; + regulator-coupled-max-spread =3D <10000>; }; }; }; --=20 2.39.2