From patchwork Fri Feb 7 17:41:24 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Patchwork-Id: 13965555 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 48EE9C02194 for ; Fri, 7 Feb 2025 17:51:35 +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:Cc:To:Message-Id: Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date:From: Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender :Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=C42kTFuQ0a+Iy/q2899HMRKX4dk5Wr5ajbcwGL6zv/4=; b=KUysoQSU0ooMkkxtHnLw79R+SX Dq8zuMdITubMrSNUAIgbjZDb3hHJf1nxY2ImmIxmvQjvbCPOwOCZ8RAM+0IPlSGmmk26YMUQgSRFs sLwSVyTxGM/30r9BBPgFAPAVwFDe4lHv5nV9u+3LeykG26QRDXcJ7B7ziJKehe0HnwGRmPOtNgcIg 5mWckuAf7ENdx9SISk1YntS2Jo2O/myWWcSBcyAXih4S9VSfajSOzHbtL6Cbk84PIxy/zen4pbDUq o9hXkKD/z4+X656mezkB+6M+jacrWsfc5xBoRIbW5JmBXGQoL9vottGVPgnVeIm6xvfxaqpRBh3H1 8Cqc7f7g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tgSVh-0000000AZE4-0cwT; Fri, 07 Feb 2025 17:51:25 +0000 Received: from bali.collaboradmins.com ([148.251.105.195]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tgSMK-0000000AWzd-2gPs; Fri, 07 Feb 2025 17:41:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1738950102; bh=gt6tOFngHm78d/hp3pS3kUPBsTjqkKCK6t6jGboTc54=; h=From:Date:Subject:To:Cc:From; b=bXEOx/MHPCuwaFB3A2Twmd8u6znm+0tGgUhhzmh9uzYGjaXB9gQ3CEvOZMFFka3Hj 4cmg+btcIpUG45tv1Ln1rkA7ldl1nJbETO1rHKsmjiBy7XHpxPARsolUk1tw5za+li GnE5wYbtOJc8NU27T+HpYdgQ4mjU+w9/nnVxVKmSDknYJEA/bis8BzT3PpDK0+I03x hcaPaWigjIk5e8C8EA8avIzJHF23wI//md21gk6GLudKV1V0jsmvSoe6UMv6W5xukA eCg80pBZGGZnJa2Ek9Pwr4S32HtdGtICZtttWLEa0S1PYz6Bel66hBJWj8qf/ydsy3 x8inU3vDae/yg== Received: from [192.168.0.47] (unknown [IPv6:2804:14c:1a9:53ee::1002]) (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: nfraprado) by bali.collaboradmins.com (Postfix) with ESMTPSA id 346D717E02AF; Fri, 7 Feb 2025 18:41:38 +0100 (CET) From: =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= Date: Fri, 07 Feb 2025 14:41:24 -0300 Subject: [PATCH v2] arm64: dts: mediatek: mt8188: Assign apll1 clock as parent to avoid hang MIME-Version: 1.0 Message-Id: <20250207-mt8188-afe-fix-hang-disabled-apll1-clk-v2-1-a636d844c272@collabora.com> X-B4-Tracking: v=1; b=H4sIAMNFpmcC/5WNSwqDMBRFtyIZ95W8KE3oqPsoDvKzPhqNJBJax L03uoMOz+Vwz8ayT+QzuzcbS75QpjhXEJeG2VHPLw/kKjPBRYeCtzCtCpUCPXgY6AOHA46yNsE 70EsICDa8wbQWUSphjR5YPVuSr/oZevaVR8prTN+zW/BY/04UBAQurXNS3rhqu4eNIWgTk77aO LF+3/cf2tTWM+AAAAA= X-Change-ID: 20241203-mt8188-afe-fix-hang-disabled-apll1-clk-b3c11782cbaf To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Matthias Brugger , AngeloGioacchino Del Regno , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Fei Shao Cc: kernel@collabora.com, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, =?utf-8?b?VHJldm9yIFd1ICjlkLPmlofoia8p?= , Chen-Yu Tsai , devicetree@vger.kernel.org, stable@vger.kernel.org, =?utf-8?b?TsOtY29sYXMgRi4gUi4gQS4gUHJhZG8=?= X-Mailer: b4 0.14.2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250207_094144_824741_C2AE692D X-CRM114-Status: GOOD ( 12.96 ) X-BeenThere: linux-arm-kernel@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-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Certain registers in the AFE IO space require the apll1 clock to be enabled in order to be read, otherwise the machine hangs (registers like 0x280, 0x410 (AFE_GAIN1_CON0) and 0x830 (AFE_CONN0_5)). During AFE driver probe, when initializing the regmap for the AFE IO space those registers are read, resulting in a hang during boot. This has been observed on the Genio 700 EVK, Genio 510 EVK and MT8188-Geralt-Ciri Chromebook, all of which are based on the MT8188 SoC. Assign CLK_TOP_APLL1_D4 as the parent for CLK_TOP_A1SYS_HP, which is enabled during register read and write, to make sure the apll1 is enabled during register operations and prevent the MT8188 machines from hanging during boot. Cc: stable@vger.kernel.org Fixes: 4dbec3a59a71 ("arm64: dts: mediatek: mt8188: Add audio support") Suggested-by: AngeloGioacchino Del Regno Signed-off-by: Nícolas F. R. A. Prado Reviewed-by: AngeloGioacchino Del Regno --- Changes in v2: - Changed patch from explicitly enabling apll1 clock in the driver to assigning apll1_d4 as the parent for the a1sys_hp clock in the mt8188.dtsi - Link to v1: https://lore.kernel.org/r/20241203-mt8188-afe-fix-hang-disabled-apll1-clk-v1-1-07cdd7760834@collabora.com --- arch/arm64/boot/dts/mediatek/mt8188.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- base-commit: ed58d103e6da15a442ff87567898768dc3a66987 change-id: 20241203-mt8188-afe-fix-hang-disabled-apll1-clk-b3c11782cbaf Best regards, diff --git a/arch/arm64/boot/dts/mediatek/mt8188.dtsi b/arch/arm64/boot/dts/mediatek/mt8188.dtsi index 5d78f51c6183c15018986df2c76e6fdc1f9f43b4..6352c9bd436550dce66435f23653ebcb43ccf0cd 100644 --- a/arch/arm64/boot/dts/mediatek/mt8188.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8188.dtsi @@ -1392,7 +1392,7 @@ afe: audio-controller@10b10000 { compatible = "mediatek,mt8188-afe"; reg = <0 0x10b10000 0 0x10000>; assigned-clocks = <&topckgen CLK_TOP_A1SYS_HP>; - assigned-clock-parents = <&clk26m>; + assigned-clock-parents = <&topckgen CLK_TOP_APLL1_D4>; clocks = <&clk26m>, <&apmixedsys CLK_APMIXED_APLL1>, <&apmixedsys CLK_APMIXED_APLL2>,