From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=74.125.82.182 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792506188; b=KL7v206SPOgk3Ghg5jg0tGxH28n/tL5WnISvQZyAs7aG/4mhkzI4v738unoMMWAKUdQa ERK/xfDM+7s9hhzBX0VlPtcStOZE5ZGN0qdxZxvpsPkJzOMGMUfe6zfX50k4sAzwiNjv3 H1+S1312gdERynjvTzVxh2B/wLEs3mhYSxBQDc4t2aLWjiWoS70gL32gYgrcF1r3GPluR ACCpqd1Iw3Ct5QCU8vT2Ge7ZIRx72qT9VC+p0cLeoRg/gylw49E52S8bjukWbmcxeoD+N NjLpFTBQoVrshvoNLJnV4OtWxR0cb3s+rn/VuqSjJEVDC+5GbZx2OSOy4YLjUfh5h3w== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792506188; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: From:To:Cc:Subject:Date:Message-ID:X-Mailer:In-Reply-To:References: MIME-Version:Content-Transfer-Encoding; bh=ED97X6gakA8ucbmLBV/4CVg3kHHt8K/gnR4HvyQCs74=; b=BaVPD3qV8nKmkWXTX4m5OguPzOtiBqBWG/BN2bBGwE9oaI0r2TErnz7o1SwIRCSMRKPJ f9vWJk96VJg3R+qRB8p861JSLJGbgRNwC9tiAGYjpFU8xgf3qaUBNp3ZXbbhWGOt7TTNz WKsd1oexTxcdiE/ca7XOEpXJukPZxPsaCro30R3giPwUtvRkSYGXJ6N8WOp2FryEXV5HC CENLxvXmdkSlIQUb67O/obTbOfUQy2aTXDDyqhiiEQyJ+RvAI1fQTlmeXEWI7PbmfDtMh iI1SMZ+noTrChDqohmGNUvvOWy6FI3YaJJR4Y2vby2tpxNwAWYBPVZ+tL0CyUrxCOZA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=U82LcTqw; arc=none smtp.remote-ip=74.125.82.182 Received: from mail-dy1-f182.google.com (mail-dy1-f182.google.com [74.125.82.182]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1242160A2610 for ; Tue, 20 Oct 2026 14:23:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 1242160A2610 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20251104 header.b=U82LcTqw Received: by mail-dy1-f182.google.com with SMTP id 5a478bee46e88-353804b591eso6218547eec.0 for ; Tue, 20 Oct 2026 07:23:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1792506187; x=1793110987; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ED97X6gakA8ucbmLBV/4CVg3kHHt8K/gnR4HvyQCs74=; b=U82LcTqwBDiVQAWDSiRG5S30IP+Reiqhx29QK7YfsYpkz4tdaHHoYNX1Diov2X266N P7v/K8Tqlri+wY/dmEBMY6NSZmY8C6Sg2hyuyQJrOPY2TWozntWYUGJzAmvKxdO07hD+ Wwfh7j/Th7s/jp4z4j9X6zWtEDLPhQ01XoF9AyEB5oXaHlpnaOTzXwcrD9OcCi9g7RJ6 RW1G1aPhKg3e3FK1i94sOlvksiJrLcd6u7880os5/3CXQf63XGHHEzlqwmy6gnKJMmil XiIBmIq5EBGxzRe8P1vhdSD6+JMyTrR/FbCLYNp3YLB+DFXWQWrmJnglSYVMulPqZp2v CoGw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1792506187; x=1793110987; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=ED97X6gakA8ucbmLBV/4CVg3kHHt8K/gnR4HvyQCs74=; b=QnB02mq4fF4yyMK7EZrnxXmWTBK8wJqISrrmP5LOjLMojGe46/bGHeXwMoepISm455 3qvQ60Eh/1I0mbHRuMLccSEnsPOeM6fvYG5yfPCRXlPmoXy3NH1HZWUTD/vF1x9iE/qv EWkizoQldPK1bRtqPj7ELtq5PfKRM29cpw/LWhGISwcyN1OGW5xVkEEFxh2cvgqOIbyR SMBv3X/oWQBZkpDzLanStAt3s5JPPseCf06UyDe/Wm+MTJaBTwBCy93j4jqMFoJAO2vd HyFhsHhrVJjiGNkjz+958g0W4o1I2CG16ktLq08YwS+kW94/bVUkJb9PSaLljUhTjXm3 eBBA== X-Forwarded-Encrypted: i=1; AKwUvBzliHhk/ZDhAWtv8a+SRHcGkFc+hXgcLx1oY3HdMGwGeIkjxi0H0MJO5Wlsg/EYkeWweVhj8WoJqXk3j7s=@vger.kernel.org X-Gm-Message-State: AFq9FYJjwQ77BEFnP2ez2zfmyi2H6RFb5yHomC/Dd9H4CMlbwTl4lcxo 9Rq56eeF4Y2FJUUaaGepKYgJMZG44ECKyEL+rh0tnptKEjN99oq2MN0Z X-Gm-Gg: AYBFou1wuGBJvXJ1KuMnO7QoBe8phXafFtfddH5zWnwYgoKWkkasElrFvqmwppOYETA pNxpOBnIJfMooVy31L4QTD7zook/uSDUlFNnCq53qNm9sSHv66aPLCFgNBJ5pwqLG9I20s8np+2 5s+1Wh+4tkQEKKvFYFMsSnUGiNFzAnOqTsg2QEULzyRdzc8sjYkdfkofCQXWGK9Mtexeju7oCCQ buZ5c8bhvfXsq4+kALPehhpIfhF6WVTsWQwmghbDtL5AZBz4kOJZS6lSpjt9TA/V11bXchUwJIm D8oSS1SO4Y9k8qtqXGlR79ghtnErE8Gg2XDwXFhFlI5RvzARHXHmxGXanoeeONCc5YmwRmg6yza dOV7CFLv06LPZwkX1ANrymq2UJjOHZg6RuMFTtuhN+G+DgJ7ty+FKYJ+Tsaoq/ARnnAgsyGqiAe f/SfsVzD7gT3lPcxWuTmgmQ8SXIpUEq/tDCzgsgPlHPaC6BPuYqd9hWAHpN/qYY1fUDcNvcK+Dl oHkmxNeFv4= X-Received: by 2002:a05:693c:409c:b0:358:ae07:138e with SMTP id 5a478bee46e88-361a0e85fb6mr17668280eec.8.1792506186522; Tue, 20 Oct 2026 07:23:06 -0700 (PDT) Received: from redducc.localdomain ([183.83.156.125]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-36081ab80f9sm66917444eec.12.2026.10.20.07.22.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Oct 2026 07:23:03 -0700 (PDT) From: Sushmit Singh Rathore To: Bjorn Andersson , Stephen Boyd Cc: Abel Vesa , Abel Vesa , Brian Masney , Jerome Brunet , Vinod Koul , Vladimir Zapolskiy , linux-arm-msm@vger.kernel.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, Sushmit Singh Rathore Subject: [PATCH v2 2/3] clk: qcom: camcc-sm8450: Retain flops across camera GDSC collapse Date: Tue, 20 Oct 2026 14:21:30 +0000 Message-ID: <20261020142157.1749-3-sushmit718@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261020142157.1749-1-sushmit718@gmail.com> References: <20261020142157.1749-1-sushmit718@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The camera GDSCs are collapsed between camera sessions. Without flop retention and with the default clock-disable wait, the IFE GDSC can stay stuck off when it is powered up for the next session. Program the same wait values and set RETAIN_FF_ENABLE as camcc-sm8550 and the downstream camera clock controller driver do for these GDSCs. Tested on the Nothing Phone (2) (SM8475) by running repeated camera sessions. Fixes: 6082037fe62e ("clk: qcom: add camera clock controller driver for SM8450 SoC") Assisted-by: LLM Signed-off-by: Sushmit Singh Rathore --- Changes in v2: - Use full name in From and Signed-off-by. drivers/clk/qcom/camcc-sm8450.c | 45 ++++++++++++++++++++++++++------- 1 file changed, 36 insertions(+), 9 deletions(-) diff --git a/drivers/clk/qcom/camcc-sm8450.c b/drivers/clk/qcom/camcc-sm8450.c index 4025db23d1a9..9f1dd51db0d5 100644 --- a/drivers/clk/qcom/camcc-sm8450.c +++ b/drivers/clk/qcom/camcc-sm8450.c @@ -2930,90 +2930,117 @@ static struct gdsc titan_top_gdsc; static struct gdsc bps_gdsc = { .gdscr = 0x10004, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "bps_gdsc", }, - .flags = HW_CTRL | POLL_CFG_GDSCR, + .flags = HW_CTRL | POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc ipe_0_gdsc = { .gdscr = 0x10078, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "ipe_0_gdsc", }, - .flags = HW_CTRL | POLL_CFG_GDSCR, + .flags = HW_CTRL | POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc sbi_gdsc = { .gdscr = 0x100d0, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "sbi_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc ife_0_gdsc = { .gdscr = 0x11004, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "ife_0_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc ife_1_gdsc = { .gdscr = 0x12004, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "ife_1_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc ife_2_gdsc = { .gdscr = 0x12050, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "ife_2_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc sfe_0_gdsc = { .gdscr = 0x13050, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "sfe_0_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc sfe_1_gdsc = { .gdscr = 0x13098, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "sfe_1_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .parent = &titan_top_gdsc.pd, .pwrsts = PWRSTS_OFF_ON, }; static struct gdsc titan_top_gdsc = { .gdscr = 0x131dc, + .en_rest_wait_val = 0x2, + .en_few_wait_val = 0x2, + .clk_dis_wait_val = 0xf, .pd = { .name = "titan_top_gdsc", }, - .flags = POLL_CFG_GDSCR, + .flags = POLL_CFG_GDSCR | RETAIN_FF_ENABLE, .pwrsts = PWRSTS_OFF_ON, }; -- 2.43.0