From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 0697E37F310 for ; Mon, 5 Oct 2026 07:47:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791186453; cv=none; b=bX5A86Cp+za/9Tkxb5PRL2gdgoKfhPe+OmMHRKEG6ZzyhX4h7O4a2L6SKDcoSkrKi84AfmX8T6NL5b5MRbin1ew0pQlm+sal5iCUMZuTdshglipp5qZyipRA2muXtj9R+8TEJ3PCKeX7F7rgr6foF/leCa0nwKO73PH3yE3mBNU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791186453; c=relaxed/simple; bh=TqM8zbKN8T61p5b/PN1xTYoB386eN8l+jAQ/Coow/NQ=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=evuG0pwOdu77wTPBOS519ByPGK2BXXEESPO29NBsfs31jUKUVET0mLdZFMuXh88X2l4CnfvGW86Po/AC5LG6mlzhnIru2lU/Wmldvl6d73BUYfaquhP/B/IHS0f/k+UJE4yvfnHXqhYAt1lPS6EZcRMfteOC8bVy93FWL+GdYEA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=oWlztjsy; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=OD+sZ70V; arc=none smtp.client-ip=205.220.180.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="oWlztjsy"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="OD+sZ70V" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 69510YTZ093943 for ; Mon, 5 Oct 2026 07:47:29 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= a9Q2PJEzfcPJVGlDIk+ValG1ScMx1NsHq3SmgOoVq+U=; b=oWlztjsywJRAJj/L uUf4Olh1d06x8cVE/2OfxO5PywMEcVdfTmMNBGMmUSVpzPoaNb5S8q8PCW4qdTwd W8vwMEqOhK1ZUb+qPeBzsjO+ClLVRRNpOj3OR0SyOq6S9LJIjh/F4R1vD8diHwyv VPT7vd/hV0QLEmzLuSC/nswPPjbuZfkJVUQVZV6NKzg4xhwWF61ceBRSZ1RYBRaw l0A/mbmDNRBBwKPpWvSPNDzBDvIBotNh6m4Co3XuW/t70Gl6zLLSJ/iJ1PIu+pmj CBt+tnAxFRgacvIL/yJiKnKqGXRj7zHktvQ3o6beFRM/8oeltnHTavLLfzaoE0Ic GRhfVg== Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4h2ssu4x49-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 05 Oct 2026 07:47:29 +0000 (GMT) Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-2e2e064b7a6so14054795ad.0 for ; Mon, 05 Oct 2026 00:47:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1791186449; x=1791791249; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=a9Q2PJEzfcPJVGlDIk+ValG1ScMx1NsHq3SmgOoVq+U=; b=OD+sZ70V1L1hJOwn7e86RD2YkhAVzYeMg16cmQGPDjawHo7b3hX1NLAjtB+DDxCkNP leTL99Dg64oVhcmyBgOz7m/NKZU2cYcltN1rqnZ7n4QdZR1+UyjWyC+qrAg2wpLYQLiO tzAnRxz7cMDm09LurRTu8+Nc8P+44R8XptbqtkRtTzINLEG9gkmxWu4QxfNF0F2TjL2Z M2+xah6/RuarfIdpFyUuwAnywyEFOxNXblaQaBgJdPsj3BwDts/cRxyYJ29chdYwSWSe 0c2RcE2S22vedRx7dmB/1cWKmetO3AVnElUbj16lF5LydmwxZ6GFcXLC5svtWrO8ZbXW DADw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791186449; x=1791791249; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=a9Q2PJEzfcPJVGlDIk+ValG1ScMx1NsHq3SmgOoVq+U=; b=wHXOHdpuUtMiAKWTgEqJEiL+ohS+8R5J5x1c9EVwfvaf3NcRk4crLig8xP75zktS1b Qet/9OTdRB8C6z3/9Pxu64mKzS0OusfsrdbTUyxqihlOmudAvGXJEeC/yTGzVbZbgkc0 YN7TDmUNiyeQjjLroxdIpphS8t4Ws/g8/8R8Nffmb/StnCuL+97SHJX9MmVBQrggcRKU Mireq+ZvmH0caj4ekwRCd7IaCFnQ7dasOBSAbGcqNjgHIUh+jkyma4adRQeAMc5e47EX NYVEdMDYJonj6au/SzLdGpOSeEsTD3gmaRQSoE7vJobEHC6RKJgLA5pwaC85K9W5N/Ir szeQ== X-Forwarded-Encrypted: i=1; AKwUvBx1if/r2acDy+PIQefRkCGP8CR8v6RTAkFTeejrLbl1lLUCSbXCiaypW75WfbZNpAoRNGLTcD87f1w=@vger.kernel.org X-Gm-Message-State: AFq9FYIaQYYJX3R6rpZM+//p+Gm3G6Odl1skv4YFF2CMgGbnIATf1u7A oVF4JhBT1IVQvsq4Jim4fqpki+H2EF+BT07Ua0ksyha/JODPiL0HpMzcwFRLPOI/yaEATe+hJHd zXLIS3gsDj7BcbnJ04zufA60Oxt9N/iYhlbM2euOLA2cQ5rr07zRZqlHmm6eh9lBo5YsY5p8= X-Gm-Gg: AYBFou0eteW5wZRvF7JN3aBje+O2a9niaFXlrLAPJbjEvHvkI9fBA8FEYNJkLk8djvK HxQao8ns9mLrjdokB7qRF5nBXH31eCxJiqNzkg3Ju4WBKiEI8mBXnkUkTuesD2QVLWPErITuhgz IYN16IMYstdEoGp8jXphpQDlU8aqgCjyYrbF2WzoUpPfgCru2/6Qa1d3N5Uo5Q/6RJHTBl6GLJE 6M/RLWe4sLeePF7/LNzhsKRcfIE0I8nB3ta/j22BjX/jF2SMZHcQE+fv63vFA2FP+o4Se0Pyvsj THwdp7nlEl1pSwlP5dqftDuAvHFvIcRdpP5l5SAtbSwyMMIMWR6WND2khWQ6hGloFRK5He6gfyC nyuwfJ/lQhFUrOza+Hte7K/PjYGs= X-Received: by 2002:a17:903:fa6:b0:2e5:334f:f47e with SMTP id d9443c01a7336-2e5334ff6aamr58115175ad.21.1791186448782; Mon, 05 Oct 2026 00:47:28 -0700 (PDT) X-Received: by 2002:a17:903:fa6:b0:2e5:334f:f47e with SMTP id d9443c01a7336-2e5334ff6aamr58114905ad.21.1791186448296; Mon, 05 Oct 2026 00:47:28 -0700 (PDT) Received: from [10.217.217.179] ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2e5a5cae50fsm3608305ad.25.2026.10.05.00.47.23 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 05 Oct 2026 00:47:27 -0700 (PDT) Message-ID: <92f75bff-47aa-401f-b232-edaba8fa2061@oss.qualcomm.com> Date: Mon, 5 Oct 2026 13:17:22 +0530 Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] clk: qcom: mmcc-sdm660: enable the parents of the pixel clock sources To: fabricioakio@gmail.com, Bjorn Andersson , Abel Vesa , Stephen Boyd , Brian Masney , Jerome Brunet , Konrad Dybcio , AngeloGioacchino Del Regno , Martin Botka Cc: Dmitry Baryshkov , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org References: <20261002-sdm660-pclk0-parent-enable-v2-1-b07f6c33e96f@gmail.com> Content-Language: en-US From: Taniya Das In-Reply-To: <20261002-sdm660-pclk0-parent-enable-v2-1-b07f6c33e96f@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA1MDAzMCBTYWx0ZWRfX7kKQzIpjTJIZ 14UYRaZkiWZHhkAPnjXxUi7qQ9jbaXOLvTM1vxr9NrGEpAWmglIoivZbp2tu3XpHyMORNlVs/qH 2NOhKip+Mc48hfB1UM0ffpB0UeDHGyXetRcTJNhXzqzE7Weom2yojru1rII+T/Z4I+DKrDLyK4a ytSOL7S2cGe8m72Xk89PSHNtZBJO+bDdJtj4kOhRH1+h2T436424ojLdxHbfpT85oYYBW1WvhkO bQ8/4XhVlQuqSubvJaHQ2hcoi4c9d2Ts3fpvoUpkoNrcRP6F1ME0uskEMc4d1Ud6BRN95PB+hOl 1JsWgNCBwyZWN8C5OTtmA0Vz5nW8p2q3iMDAD8Sp6wNBwsjjM6Jc8l5Dr03P5RvVk2FkC8OZjQ1 nehm91/EhVAm3kHSSoueSGvbQQN2kFnJYnWPTKDfdNU5+qlPv56wKP9GkLZBJEcFYp0H8fRY6XK Vu7YB/kJpgcqmr3WEkg== X-Proofpoint-ORIG-GUID: ysFljZHrbQ3ORlc1SjEsBukU0PcVIVco X-Proofpoint-GUID: ysFljZHrbQ3ORlc1SjEsBukU0PcVIVco X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA1MDAzMCBTYWx0ZWRfX6dICJarH1W39 gLh7mleHTHbBQxhBcDTrsQ7P1cQWZrijSrQr1pyECD3hmFul1t/Pe9LL4gIQxZxXn9GPEXC7bBU J9D/0edSx5Z/iF5mAbCjTnSpO0OnU/Y= X-Authority-Analysis: v=2.4 cv=XPSl2ghE c=1 sm=1 tr=0 ts=6ac35611 cx=c_pps a=IZJwPbhc+fLeJZngyXXI0A==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=ZpdpYltYx_vBUK5n70dp:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=V8gMRo3A-47TgN-c6xAA:9 a=QEXdDO2ut3YA:10 a=uG9DUKGECoFWVXl0Dc02:22 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-05_01,2026-10-02_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 adultscore=0 malwarescore=0 spamscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 phishscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610050030 On 10/2/2026 10:16 PM, Fabricio Akio via B4 Relay wrote: > From: Fabricio Akio > > pclk0_clk_src and pclk1_clk_src are fed by the DSI PHY PLLs, which > dsi_pll_14nm_vco_set_rate() resets and only clk_prepare() restarts. The > DSI host sets the link rates before it prepares the PLL, so the RCG is > updated against a stopped source, and if it is enabled at that point > the update times out: > > pclk0_clk_src: rcg didn't update its configuration. > > Seen on a board whose simple-framebuffer node lists the pixel clock: > the RCG then reads enabled at msm's first modeset. > > Set CLK_OPS_PARENT_ENABLE on both so the core prepares the PLL around > the rate change, as dispcc-sm8250 does for its pixel clock sources since > commit acf7a91d0b0e ("clk: qcom: dispcc-sm8250: Enable parents for pixel > clocks"). > > Fixes: 5db3ae8b33de ("clk: qcom: Add SDM660 Multimedia Clock Controller (MMCC) driver") > Signed-off-by: Fabricio Akio Reviewed-by: Taniya Das -- Thanks, Taniya Das