From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 02875BA45 for ; Tue, 7 Mar 2023 18:00:05 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5E1F9C4339E; Tue, 7 Mar 2023 18:00:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1678212005; bh=K0PjAwaLIhioEy3O2E8Eo/dUpsnarRb9VXrWAQjoRZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=P+mQzxN6Sfb2+NYmlUTSiGaIOnqDtFNqGgDzUgMs6TVhBRpbt9PgJcm2kPT0bvwDA JhID9WNFPJBgIPQDfr2tpw7krnWNgCkfPTijmLsqrdMFCDWsP77JDQk/1Y6yPScd07 8mEG1dgk1UREDMQAtbZjCrSNpBiRzBFTEUleSdCc= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Chen-Yu Tsai , AngeloGioacchino Del Regno , Matthias Brugger , Sasha Levin Subject: [PATCH 6.1 016/885] arm64: dts: mediatek: mt8192: Fix systimer 13 MHz clock description Date: Tue, 7 Mar 2023 17:49:10 +0100 Message-Id: <20230307170002.354085005@linuxfoundation.org> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230307170001.594919529@linuxfoundation.org> References: <20230307170001.594919529@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Chen-Yu Tsai [ Upstream commit f19f68e56b0c6631984a9f5023035d4bd09612bb ] The systimer block derives its 13 MHz clock by dividing the main 26 MHz oscillator clock by 2 internally, not through the TOPCKGEN clock controller. On the MT8192 this divider is fixed to /2 and is not configurable. Making the systimer block take the 26 MHz clock directly requires changing the implementations. As an ABI compatible fix, change the input clock of the systimer block a fixed factor divide-by-2 clock that takes the 26 MHz oscillator as its input. Fixes: 48489980e27e ("arm64: dts: Add Mediatek SoC MT8192 and evaluation board dts and Makefile") Signed-off-by: Chen-Yu Tsai Reviewed-by: AngeloGioacchino Del Regno Link: https://lore.kernel.org/r/20221201084229.3464449-3-wenst@chromium.org Signed-off-by: Matthias Brugger Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/mediatek/mt8192.dtsi | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/arch/arm64/boot/dts/mediatek/mt8192.dtsi b/arch/arm64/boot/dts/mediatek/mt8192.dtsi index 6b20376191a75..8163684a23f6e 100644 --- a/arch/arm64/boot/dts/mediatek/mt8192.dtsi +++ b/arch/arm64/boot/dts/mediatek/mt8192.dtsi @@ -29,6 +29,15 @@ aliases { rdma4 = &rdma4; }; + clk13m: fixed-factor-clock-13m { + compatible = "fixed-factor-clock"; + #clock-cells = <0>; + clocks = <&clk26m>; + clock-div = <2>; + clock-mult = <1>; + clock-output-names = "clk13m"; + }; + clk26m: oscillator0 { compatible = "fixed-clock"; #clock-cells = <0>; @@ -531,8 +540,7 @@ systimer: timer@10017000 { "mediatek,mt6765-timer"; reg = <0 0x10017000 0 0x1000>; interrupts = ; - clocks = <&topckgen CLK_TOP_CSW_F26M_D2>; - clock-names = "clk13m"; + clocks = <&clk13m>; }; pwrap: pwrap@10026000 { -- 2.39.2