From patchwork Tue Feb 28 10:47:34 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 13154694 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5FFCFC64EC7 for ; Tue, 28 Feb 2023 10:52:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=cHonwNaD+m1C7FdcuBBExSgPDVNzKwbqbEIk7xjFbP0=; b=Xt6/m7YstJbhhK5yjx6iJp9mz4 dH5i019HjiSOBr0Mfo/KWQ99q5M7yisU8ESoCISQiLl18kKIMkjsRolqVx9yhOO9pMyku9F2fA61S Mixmz/CmmPsRhhH/7NOUCVBZAX3bWO1ZkDb5UHtlHe82KfZ5MVb54rtVL5HdnooMB86xplxSSwTc1 HNRemikbKH1IasZuFLFA1hnvmXnPbHP+jYyGX/uL26ZZHckS+9jEbp2qMqtTrLLiKnFIrBnMjTqGf Sb+yphWETYEsGFH9YWPkvXDQ8qxNu4ELhE/nYTclZWNgjJvVipbGbO+VIIEmXdyPrtgGmIykNfV9/ bT6Vm1Vw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pWxau-00CmgD-W9; Tue, 28 Feb 2023 10:52:29 +0000 Received: from madras.collabora.co.uk ([46.235.227.172]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1pWxWX-00CjzV-NW; Tue, 28 Feb 2023 10:47:59 +0000 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 141D16602FDA; Tue, 28 Feb 2023 10:47:56 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1677581276; bh=VIfsardJ+9N5gfD68eWHLQAfgPXFsPsNOQTEezXqqYc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eDNm0LLCVYLdi20WIoODyMKMVC8P5uQS2p5Qq97qO2zAHV0ibUPx5RkZf217/B6HT YNaBX3d/fmf1/ozomdQdlCY+gCjJQ27LOO3yElthsZAG1GZKO8Uwl81ywVL62MKWpc qNE2PN7EJ/0QHu968Oe44E4LcH/imaprFBoPeHbMiKcAJFI2Zntw8ahIFUq781sYJE V1kbO6LRhave0fc3ySnfaSXgmrTw/sE3nc6weSJHeDwqLhrsFVlmeZcM7VNOnub5og Z922lNkLrWn8fVCIyqwjZyxYF1AyhPOx5JQxthHqlKAySNCKvK48INWrtOoNI5xctj TV/uQQSB/aNlA== 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 v3 11/18] arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators Date: Tue, 28 Feb 2023 11:47:34 +0100 Message-Id: <20230228104741.717819-12-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230228104741.717819-1-angelogioacchino.delregno@collabora.com> References: <20230228104741.717819-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230228_024757_957416_58F2094E X-CRM114-Status: UNSURE ( 8.53 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org 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", but don't touch mt6315's vbuck1 as its constraints are fine. Signed-off-by: AngeloGioacchino Del Regno --- 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 df477eb89f21..c8b6e1a9605b 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; }; +&mt6359_vsram_others_ldo_reg { + regulator-min-microvolt = <750000>; + regulator-max-microvolt = <850000>; + regulator-coupled-with = <&mt6315_7_vbuck1>; + regulator-coupled-max-spread = <10000>; +}; + &mt6359_vufs_ldo_reg { regulator-always-on; }; @@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 { regulator-max-microvolt = <1193750>; regulator-enable-ramp-delay = <256>; regulator-allowed-modes = <0 1 2>; + regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>; + regulator-coupled-max-spread = <10000>; }; }; };