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[2620:137:e000::1:20]) by mx.google.com with ESMTP id n12-20020a05640206cc00b004aee50e5393si2310851edy.101.2023.02.28.02.49.20; Tue, 28 Feb 2023 02:49:43 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@collabora.com header.s=mail header.b=ima4zDZi; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=collabora.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231295AbjB1KsV (ORCPT + 99 others); Tue, 28 Feb 2023 05:48:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33374 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231159AbjB1KsG (ORCPT ); Tue, 28 Feb 2023 05:48:06 -0500 Received: from madras.collabora.co.uk (madras.collabora.co.uk [46.235.227.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C57406E9B; Tue, 28 Feb 2023 02:47:55 -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 297D56602FD6; Tue, 28 Feb 2023 10:47:54 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1677581274; bh=2d8a1s6Yhde89pXYtEnq08v+ES25mvl579PIaEXQyEw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ima4zDZiIey6aYeTZgcLCNjPNHGjugB/Df1/IfaoIYBEivRgbURpY7DngWKPpL4IN bTPc+7QzSiOv44327eM+ZQGsEs0ewW2kgtQta4Uyp13ddd9/dcA5U/earYcBMoqJf0 OE9DgpcdUav5OgHsjnYuA+8LefTbmI3bwb4pNptqhYDU5Ui574U9YpEC0iVCaNQI8P jidOEyEuUASIf5J+FmOL36A74vQj0OFbFX74LCWavpC8cPg498ZUx7daM1/JdlISJy R184Qb853erFpVWQNLbFLeyjghIh/YcJhLQ/M/7gTOaN7tL2Dk4wJ2NcdbJTr7b9/8 aSFqUCItI9ftQ== 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 08/18] arm64: dts: mediatek: mt8192: Add mfg_ref_sel clock to MFG0 domain Date: Tue, 28 Feb 2023 11:47:31 +0100 Message-Id: <20230228104741.717819-9-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-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1759071577426026272?= X-GMAIL-MSGID: =?utf-8?q?1759071577426026272?= 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 { power-domain@MT8192_POWER_DOMAIN_MFG0 { reg = ; - clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>; - clock-names = "mfg"; + clocks = <&topckgen CLK_TOP_MFG_PLL_SEL>, + <&topckgen CLK_TOP_MFG_REF_SEL>; + clock-names = "mfg", "alt"; #address-cells = <1>; #size-cells = <0>; #power-domain-cells = <1>;