From patchwork Thu Feb 23 13:43:34 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: 13150432 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 1318FC636D6 for ; Thu, 23 Feb 2023 13:50:42 +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=GsqTwxdIixnZB6IgwP/EtUJGZNyLL98knKFBMEAawsc=; b=FArcMR28t3EMhox92AawYN86/w dxkqWVC94yP9RwSGp9TcNLfLbSKgWvpLwKvMIupv6Wvl5V6W0c5QajmP+4dyhscXE/WMUCTZ3f++m XREw7I0rm51eEBVGh6/ZuRbt1X4iyNV8w1AKWhp+CTc5QpxU/nvkUZ+SZDJ1zPmG6dwRr7oQLir1F LOTTkpxhlDksPgQkT3G+UIzmjWMrgDFSUVpk4y0BPmPgGlSgoAztC+IsdxfuJf28Jd8UzWJBZrOOo pwNSrgFfZJfyX7VNfGKO8bDMet9wZy+GJR8l11ZpMlHlmf/xTP+rxFehUXUYkII/NBD2jmKXlm9F7 ydrJUiNg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1pVBzW-00GbtA-Th; Thu, 23 Feb 2023 13:50:34 +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 1pVBtA-00GYKu-Kd; Thu, 23 Feb 2023 13:44:02 +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 9AD21660220C; Thu, 23 Feb 2023 13:43:58 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1677159839; bh=MrIqGkrI7LujwoSZ7Bc2owhtRwNGguk3yNGZ02UZ6+Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=S52oOLdwx8SJc0VrVkilY+Rm9h+xmcZeTq4RbGHI9TpY0AWNOgqbgGaqRDfeuwtP/ wkHnBsVMEx32STxRhX6Mmtw4HJNy5/CQ61urf5woc0yxJjtvWfj3x+Fk/s6wWYwv6J akCS5IaxUgmY9+tDLAbapeT8I688LPCCUTsvwXjWnNGLZvcTcnO6d6a5eronVa96hz tvsYpiQBvJM+q5LIDuzyMC7XuYCaB73Y/BHC67tN/cNplq3I7MhBWyF6PRMFTAd4q4 FxOmIzMofge19j+bHpg0K0VJHyeI+gm/LAkpJ04tP41UWc//yfd7WPdUDWgWCe5gti CFuCkPSlo8EIA== 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 v2 05/16] arm64: dts: mediatek: mt8183-evb: Couple VGPU and VSRAM_GPU regulators Date: Thu, 23 Feb 2023 14:43:34 +0100 Message-Id: <20230223134345.82625-6-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230223134345.82625-1-angelogioacchino.delregno@collabora.com> References: <20230223134345.82625-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230223_054400_870482_8178D3B7 X-CRM114-Status: UNSURE ( 8.84 ) 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 they have a strict voltage output relation to satisfy in order to ensure GPU stable operation. Signed-off-by: AngeloGioacchino Del Regno --- arch/arm64/boot/dts/mediatek/mt8183-evb.dts | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts index 52dc4a50e34d..fd327437e932 100644 --- a/arch/arm64/boot/dts/mediatek/mt8183-evb.dts +++ b/arch/arm64/boot/dts/mediatek/mt8183-evb.dts @@ -52,7 +52,6 @@ &auxadc { &gpu { mali-supply = <&mt6358_vgpu_reg>; - sram-supply = <&mt6358_vsram_gpu_reg>; }; &i2c0 { @@ -138,6 +137,16 @@ &mmc1 { non-removable; }; +&mt6358_vgpu_reg { + regulator-coupled-with = <&mt6358_vsram_gpu_reg>; + regulator-coupled-max-spread = <100000>; +}; + +&mt6358_vsram_gpu_reg { + regulator-coupled-with = <&mt6358_vgpu_reg>; + regulator-coupled-max-spread = <100000>; +}; + &pio { i2c_pins_0: i2c0{ pins_i2c{