From patchwork Sun Mar 10 13:21:11 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13588118 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (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 0EB3029411; Sun, 10 Mar 2024 13:30:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.152 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710077423; cv=none; b=So8/TOZZCluEbsSqM6CLk8TByiC35U/N0DEPb35nilbu/SVuH6CPCeqP5rRb49Y2HlJ1FE3Fp69AbZbsinLDFGLWvFZks+UsznVl95OsV6mXaeHRGuuFUBeVUAEaaq2isWdgazaFCf4zq/ZUKPQXpRzrnNIkgzKN/WXYc8I44kg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710077423; c=relaxed/simple; bh=CqzJhF4o2XVhzVlKqVuKVOUwZQAnduWDJhne+0nY6oQ=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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Sun, 10 Mar 2024 14:22:14 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1710076934; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=iuVCUppc+ddFR8UUDWGyNuWRGBDXVACD/i0UBw2FfT0=; b=jL1TKCmJxkYKSofV18GqqZidtQ6dBS0RSdbNryORV2eglYdk8CpD9Nl6NSPIuMKvcba6gL VczhR8HuAoPuf57nciEQdJX7aGSHGaq0o4vzG1E4gd2EcTGF7kdpeyfIxpD1EB7ogSFbL3 BbmtwgkbdDBOJQYXEmncAWexysEWh4SwpbhG1+QD0sMWZQSys4mMHxmkJZ653zRJivGHqW D9p4WWXPNh5uShxkZT1GxlQSZ/BP8hIZpiCm+Bn6K3EuYd9CA6NGdJh80SUt548YDQi7+b 2a6GKhWXuOriRWixcOXSmJ45B0LDxVKC50YcSNotAN4hKJHSktMB1QZPJxKfbw== From: Frank Oltmanns Date: Sun, 10 Mar 2024 14:21:11 +0100 Subject: [PATCH v4 1/5] clk: sunxi-ng: common: Support minimum and maximum rate Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240310-pinephone-pll-fixes-v4-1-46fc80c83637@oltmanns.dev> References: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> In-Reply-To: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> To: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , =?utf-8?q?Guido_G=C3=BCnther?= , Purism Kernel Team , Ondrej Jirman , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Frank Oltmanns , stable@vger.kernel.org X-Developer-Signature: v=1; a=openpgp-sha256; l=2480; i=frank@oltmanns.dev; h=from:subject:message-id; bh=CqzJhF4o2XVhzVlKqVuKVOUwZQAnduWDJhne+0nY6oQ=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBl7bP5kCr8X0Jr9HHd3T424gfP8km/HgWZfPQml DbUiRGKwIqJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZe2z+QAKCRCaaaIIlErT x06dDACAZf8e15F20tsk2AJ2y+vPgbtV7PitDHlG2/P3dLpBvPQ4GJAHi7ReDu+fsWJn/0bmkxO 8u0uLux/EGhhpuxCa0o5NP0w9tzUvTo+1XYDZ9cAhXXbDkraBMnYff7BXutewjjbj8HjDXV6Z2p CrYYT/22bbb00DY0KVjqTHRWq5dDzyO8ymWvdkfG28vBpEeHYOoG/Zyp45EG6p2zf1Gqp0ew9Bz pPDqdYka3MQovp53e7GHFeOD8/0sVBvAXJGripG1awS/rVsT7Hq0GY6XKTVZNEY69+dR4u4mYgv qc/x+lx9MhMDvTfwv9MH72Y/yCIs1xJ1ulmUPS8rpdrO71f3lYJe7zBFYgLzsG0dyiFRBwNPIP0 /EBfNGpeLQkenimONtJE9B/BrWWCs7C8OM22CNYbQVGKsIiH+JWW9xHU0WUJivrSr1nV4bqYE6A IyeFmD0oXLGrt/liRNxEWvMYOoM/xskY+oKeMve6o0RhihHV5ljc2jEHSb+6dxd5AreAE= X-Developer-Key: i=frank@oltmanns.dev; a=openpgp; fpr=02FD257B7F90E6B9A5444F969A69A208944AD3C7 The Allwinner SoC's typically have an upper and lower limit for their clocks' rates. Up until now, support for that has been implemented separately for each clock type. Implement that functionality in the sunxi-ng's common part making use of the CCF rate liming capabilities, so that it is available for all clock types. Suggested-by: Maxime Ripard Signed-off-by: Frank Oltmanns Cc: stable@vger.kernel.org Reviewed-by: Jernej Skrabec Acked-by: Maxime Ripard --- drivers/clk/sunxi-ng/ccu_common.c | 19 +++++++++++++++++++ drivers/clk/sunxi-ng/ccu_common.h | 3 +++ 2 files changed, 22 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_common.c b/drivers/clk/sunxi-ng/ccu_common.c index 8babce55302f..ac0091b4ce24 100644 --- a/drivers/clk/sunxi-ng/ccu_common.c +++ b/drivers/clk/sunxi-ng/ccu_common.c @@ -44,6 +44,16 @@ bool ccu_is_better_rate(struct ccu_common *common, unsigned long current_rate, unsigned long best_rate) { + unsigned long min_rate, max_rate; + + clk_hw_get_rate_range(&common->hw, &min_rate, &max_rate); + + if (current_rate > max_rate) + return false; + + if (current_rate < min_rate) + return false; + if (common->features & CCU_FEATURE_CLOSEST_RATE) return abs(current_rate - target_rate) < abs(best_rate - target_rate); @@ -122,6 +132,7 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, for (i = 0; i < desc->hw_clks->num ; i++) { struct clk_hw *hw = desc->hw_clks->hws[i]; + struct ccu_common *common = hw_to_ccu_common(hw); const char *name; if (!hw) @@ -136,6 +147,14 @@ static int sunxi_ccu_probe(struct sunxi_ccu *ccu, struct device *dev, pr_err("Couldn't register clock %d - %s\n", i, name); goto err_clk_unreg; } + + if (common->max_rate) + clk_hw_set_rate_range(hw, common->min_rate, + common->max_rate); + else + WARN(common->min_rate, + "No max_rate, ignoring min_rate of clock %d - %s\n", + i, name); } ret = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, diff --git a/drivers/clk/sunxi-ng/ccu_common.h b/drivers/clk/sunxi-ng/ccu_common.h index 942a72c09437..329734f8cf42 100644 --- a/drivers/clk/sunxi-ng/ccu_common.h +++ b/drivers/clk/sunxi-ng/ccu_common.h @@ -31,6 +31,9 @@ struct ccu_common { u16 lock_reg; u32 prediv; + unsigned long min_rate; + unsigned long max_rate; + unsigned long features; spinlock_t *lock; struct clk_hw hw; From patchwork Sun Mar 10 13:21:12 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13588115 Received: from mout-p-202.mailbox.org (mout-p-202.mailbox.org [80.241.56.172]) (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 B23D729411; Sun, 10 Mar 2024 13:22:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710076951; cv=none; b=pW6UJHIQzDbOsGc+nPNIo5/51WiVPQMS6EXg6A5MbNFDrL1a30TuFxMwVoe54GjwrmDM75NqQ052iqxw3vbTvoTc22msN0GsmEOG/GIxYZlk8C8DgFpXgbvRGzfUYjjA0N71hjK+urqG3Bt3wzhg3W4vA2XIkwLXmBUuCy+ZFVY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710076951; c=relaxed/simple; bh=cWJvD4kuynMAtMT5uLtxnwY8oLH1NsilC8b3ZEB8+cU=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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Sun, 10 Mar 2024 14:22:20 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1710076940; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=tUAFtRbxGvc8iX6JY0PD4/Rc4PD2SEcW1+r17X7Ljv4=; b=PtV2RTRTPN8N2u0CbqIk/J2x29QlvCvhfSqZ9jvdnx5h1KlTJUgOsv9FPD36tVuGM8Ll7r ufXYBil6l95z/DoPr6cQX09Bk6e8YxJWcxXlTMkw3Sef8rEFkym5vtzKN7bz+70XohTV0q SaFw21g+kDqtvvXdP52avUU4Z72gbVev9WNLLj03M2Rig9ucpwGOt7rnk3Xu7ZdGDwENDJ SLCCZ4aTADDyJRNxowwriiA3lIUcNsJ9jDIB/IFa2Nm7c/nmc1GGq545htNocfQEpikZoF NOZ+c+akJRL5myjHnxqyErHyC2TjrTVAgX2e0CecgRNieiADS3BAAvoLrWcm1Q== From: Frank Oltmanns Date: Sun, 10 Mar 2024 14:21:12 +0100 Subject: [PATCH v4 2/5] clk: sunxi-ng: a64: Set minimum and maximum rate for PLL-MIPI Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240310-pinephone-pll-fixes-v4-2-46fc80c83637@oltmanns.dev> References: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> In-Reply-To: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> To: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , =?utf-8?q?Guido_G=C3=BCnther?= , Purism Kernel Team , Ondrej Jirman , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Frank Oltmanns , Diego Roversi , stable@vger.kernel.org X-Developer-Signature: v=1; a=openpgp-sha256; l=1520; i=frank@oltmanns.dev; h=from:subject:message-id; bh=cWJvD4kuynMAtMT5uLtxnwY8oLH1NsilC8b3ZEB8+cU=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBl7bP53Lez98R5l+BpPUkN4t68Hnq58iOfjCT0n da5fIrwczOJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZe2z+QAKCRCaaaIIlErT x5S3C/0ZYTeWiGBr+WsKmwU0bXaq4u1nkNKkN86DZhDhY7+qYYBhUS1VUprNX6a539W+8/J60UM X4E3yj8ku48Mr7w1+9dZC9H7bnzZEf6YMrdGrL2tg883LIKMgsvSyn+JgapZrTE+vG6USzZMDzc ptH9ALrIIN2f9Ih8D9drPECcKXhRzEweBhUpWoff18M5C25xew2/rJWqNebefGMwSoVEm/28h0i ECegQwZDItrOLlTeeYvmrXnURm71z2cIPB3QdUMYkB8z3CSZNvgSFuHykY4aJGJvZUsnR4/TNzy jhGXSXTF7dRShqnvO1C4xK5ZnRkya1xgOOe04U/k2sLekzL5y7VChTCnYZjiITZ79tb24Go/NDa LkTYoZIr0glgk8Zk8p4Pvp2lfs7xlxBR5Dr69ZnVvr62LNhKFGTy2gJy3w7MSn3bwwlTh9j7VTb ORbor/d01S4sFolpZHe7vMfLPIpsRxlh3KDWrfdMrxij9YdnKi1S/nrzhBTGfftAJPNos= X-Developer-Key: i=frank@oltmanns.dev; a=openpgp; fpr=02FD257B7F90E6B9A5444F969A69A208944AD3C7 When the Allwinner A64's TCON0 searches the ideal rate for the connected panel, it may happen that it requests a rate from its parent PLL-MIPI which PLL-MIPI does not support. This happens for example on the Olimex TERES-I laptop where TCON0 requests PLL-MIPI to change to a rate of several GHz which causes the panel to stay blank. It also happens on the pinephone where a rate of less than 500 MHz is requested which causes instabilities on some phones. Set the minimum and maximum rate of Allwinner A64's PLL-MIPI according to the Allwinner User Manual. Fixes: ca1170b69968 ("clk: sunxi-ng: a64: force select PLL_MIPI in TCON0 mux") Reported-by: Diego Roversi Closes: https://groups.google.com/g/linux-sunxi/c/Rh-Uqqa66bw Tested-by: Diego Roversi Cc: stable@vger.kernel.org Reviewed-by: Maxime Ripard Signed-off-by: Frank Oltmanns Reviewed-by: Jernej Skrabec --- drivers/clk/sunxi-ng/ccu-sun50i-a64.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c index 8951ffc14ff5..6a4b2b9ef30a 100644 --- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c @@ -182,6 +182,8 @@ static struct ccu_nkm pll_mipi_clk = { &ccu_nkm_ops, CLK_SET_RATE_UNGATE | CLK_SET_RATE_PARENT), .features = CCU_FEATURE_CLOSEST_RATE, + .min_rate = 500000000, + .max_rate = 1400000000, }, }; From patchwork Sun Mar 10 13:21:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13588114 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (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 433762943F; 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bh=ugKhzTVt1AcqmTVj4/zhKrifJsgXqt3bG4BPHQ/PtEk=; b=AnZC+e2aF9e/e3raZ/HmFBI4rZRzDxjSUpTqCLeG4rYtcC5y+uQRv0VBaHDuFvWyVgBGEt 13ZjpOSpnsEblHujKJi0Df8cjDegZrSVOBa4QGQTRJKyCxnjEAsrl8CuJj2s7jpdH6j7rH HLKxss97dZkioiI2Epp6WoXokXv8BcXgxAYKNApVmMQeJY2BB+jxgFf6/AE7IufSyFZ7dm Z7PElD3n0t9L077DNF62pyIFKBc7Ep6lFHpb9x7hPnV1T3O73LLb3KkzkyHbhITkmfRNB7 bneU5+OVIFnPEvIsJlCjxlRbh8txufGpI8koVFI6vN4jXSEOhmmwztby2LkWVg== From: Frank Oltmanns Date: Sun, 10 Mar 2024 14:21:13 +0100 Subject: [PATCH v4 3/5] clk: sunxi-ng: nkm: Support constraints on m/n ratio and parent rate Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240310-pinephone-pll-fixes-v4-3-46fc80c83637@oltmanns.dev> References: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> In-Reply-To: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> To: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , =?utf-8?q?Guido_G=C3=BCnther?= , Purism Kernel Team , Ondrej Jirman , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Frank Oltmanns X-Developer-Signature: v=1; a=openpgp-sha256; l=2581; i=frank@oltmanns.dev; h=from:subject:message-id; bh=sz8/RCE/mblTN6+mQB7r6nXbctInrDxt2wSc2tr+a2Q=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBl7bP5Pva37Lqxh7aeU4Ge0T48bdNaev/Ytwhzh xTIwi0Pf9OJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZe2z+QAKCRCaaaIIlErT x47kC/0bWCWj4UUKuy1/lJZ2Qaz5o9QjWH//p6UhSvRoMO0PW67MWT5weXPqpq0fdxfkTHVM/S8 9vM1SBGW/C7VN/eVTeIvfsCBGlk3IGMMyJ7uVnUSrPJQD+fgw6dexD5qI2hNQRy5mgVAqUv5SZ2 kPf6MemGxZfwsI0fxaavcUiQARZWRtcNar3ybbnoIIb0BWzVeaXCuLWyKcNYjbph6pETDAJFSLF /0sBarC6qWNPJAeFEc0I7hSXc8ysA5ws9MSADrZDxQFtQbOBDCqGwW+jPf9+L/9jDaLLtWNQDsh aPwY3HPk4T3yaYefRX5idT6w0M0qy7lkB1d5mZb6ArQOZ/sKv01aNs6PfJy4bJQzyJi8ZpR8wqk Yv0gV5EEHLz3goA/nReyrB4xtxxGwuwwOotKrXOoLmACBbNy2iB/KztRCdbIvrnx59ZqQ2AZmsq fXlbL1/lDQrwjeNt8J2vrPQ4twmiZPPELa81VB0jmGBACqkE6btneLjYRmhnCSb/kQj0I= X-Developer-Key: i=frank@oltmanns.dev; a=openpgp; fpr=02FD257B7F90E6B9A5444F969A69A208944AD3C7 X-Rspamd-Queue-Id: 4Tt0v45hX5z9sps The Allwinner A64 manual lists the following constraints for the PLL-MIPI clock: - M/N <= 3 - (PLL_VIDEO0)/M >= 24MHz The PLL-MIPI clock is implemented as ccu_nkm. Therefore, add support for these constraints. Reviewed-by: Jernej Skrabec Signed-off-by: Frank Oltmanns --- drivers/clk/sunxi-ng/ccu_nkm.c | 21 +++++++++++++++++++++ drivers/clk/sunxi-ng/ccu_nkm.h | 2 ++ 2 files changed, 23 insertions(+) diff --git a/drivers/clk/sunxi-ng/ccu_nkm.c b/drivers/clk/sunxi-ng/ccu_nkm.c index 853f84398e2b..1168d894d636 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.c +++ b/drivers/clk/sunxi-ng/ccu_nkm.c @@ -16,6 +16,20 @@ struct _ccu_nkm { unsigned long m, min_m, max_m; }; +static bool ccu_nkm_is_valid_rate(struct ccu_common *common, unsigned long parent, + unsigned long n, unsigned long m) +{ + struct ccu_nkm *nkm = container_of(common, struct ccu_nkm, common); + + if (nkm->max_m_n_ratio && (m > nkm->max_m_n_ratio * n)) + return false; + + if (nkm->min_parent_m_ratio && (parent < nkm->min_parent_m_ratio * m)) + return false; + + return true; +} + static unsigned long ccu_nkm_find_best_with_parent_adj(struct ccu_common *common, struct clk_hw *parent_hw, unsigned long *parent, unsigned long rate, @@ -31,6 +45,10 @@ static unsigned long ccu_nkm_find_best_with_parent_adj(struct ccu_common *common unsigned long tmp_rate, tmp_parent; tmp_parent = clk_hw_round_rate(parent_hw, rate * _m / (_n * _k)); + + if (!ccu_nkm_is_valid_rate(common, tmp_parent, _n, _m)) + continue; + tmp_rate = tmp_parent * _n * _k / _m; if (ccu_is_better_rate(common, rate, tmp_rate, best_rate) || @@ -64,6 +82,9 @@ static unsigned long ccu_nkm_find_best(unsigned long parent, unsigned long rate, for (_k = nkm->min_k; _k <= nkm->max_k; _k++) { for (_n = nkm->min_n; _n <= nkm->max_n; _n++) { for (_m = nkm->min_m; _m <= nkm->max_m; _m++) { + if (!ccu_nkm_is_valid_rate(common, parent, _n, _m)) + continue; + unsigned long tmp_rate; tmp_rate = parent * _n * _k / _m; diff --git a/drivers/clk/sunxi-ng/ccu_nkm.h b/drivers/clk/sunxi-ng/ccu_nkm.h index 6601defb3f38..c409212ee40e 100644 --- a/drivers/clk/sunxi-ng/ccu_nkm.h +++ b/drivers/clk/sunxi-ng/ccu_nkm.h @@ -27,6 +27,8 @@ struct ccu_nkm { struct ccu_mux_internal mux; unsigned int fixed_post_div; + unsigned long max_m_n_ratio; + unsigned long min_parent_m_ratio; struct ccu_common common; }; From patchwork Sun Mar 10 13:21:14 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13588116 Received: from mout-p-102.mailbox.org (mout-p-102.mailbox.org [80.241.56.152]) (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 7B5CB34CD5; Sun, 10 Mar 2024 13:22:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.152 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710076954; cv=none; b=dpuJWGwx5fnXVMQqg0FB51JafFw0c+s0/vOFsj6Up2VBmARB0fvdHarAKpf3O4VkuTBojnITx7Kj269rK4uY+skHvQcHQPPIXhIB3bTJYs34aRhda1cDsveLqrUfwng5Iig+1QekabVfkzKQY2/Qfarks69uXaHpDaoy6XjJuhI= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710076954; c=relaxed/simple; bh=ZV5lBxre/6M2MuCOOKXnH1cRS8cfBKGM9w8C16rRn4M=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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Sun, 10 Mar 2024 14:22:29 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1710076949; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=mSwEbrk7HLbiVNg/S8Upg2syVPjC3LO4YtPCBym8jns=; b=X+LJ+PCXGwxG9G4WS/TRRQQWedm3WrIvjNGcf3IyPuDYlUdkiR8+aKGzow9mcas8qKnQRc YGAWtICRa3gwaSG28TKplt4sqEY+4NUQmZ0zL+6hYrWsIWUtn91n5bqKyqg2Wjd1mQXvBL adkL/gXYJtM6gtLySg6aq4Ut0PxfzncW71dPvTN5I8wlyeutdRULyOCh6mRDQZJAXyeCni 4GFFGLolP9o/Ouaog8EbHezhjNKSdGhE0vDOe+xPOOfrSr2GrUqJfB3tyy7cmzKo4fjzwG NiwFP9RBa/Et2VvysOvVi9wnvUOaU3baDGHcIoqF2ihzLO2IaBWLZDMIXpSV5Q== From: Frank Oltmanns Date: Sun, 10 Mar 2024 14:21:14 +0100 Subject: [PATCH v4 4/5] clk: sunxi-ng: a64: Add constraints on PLL-MIPI's n/m ratio and parent rate Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240310-pinephone-pll-fixes-v4-4-46fc80c83637@oltmanns.dev> References: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> In-Reply-To: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> To: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , =?utf-8?q?Guido_G=C3=BCnther?= , Purism Kernel Team , Ondrej Jirman , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Frank Oltmanns X-Developer-Signature: v=1; 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Reviewed-by: Jernej Skrabec Signed-off-by: Frank Oltmanns --- drivers/clk/sunxi-ng/ccu-sun50i-a64.c | 12 +++++++----- 1 file changed, 7 insertions(+), 5 deletions(-) diff --git a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c index 6a4b2b9ef30a..07796c79a23e 100644 --- a/drivers/clk/sunxi-ng/ccu-sun50i-a64.c +++ b/drivers/clk/sunxi-ng/ccu-sun50i-a64.c @@ -171,11 +171,13 @@ static struct ccu_nkm pll_mipi_clk = { * user manual, and by experiments the PLL doesn't work without * these bits toggled. */ - .enable = BIT(31) | BIT(23) | BIT(22), - .lock = BIT(28), - .n = _SUNXI_CCU_MULT(8, 4), - .k = _SUNXI_CCU_MULT_MIN(4, 2, 2), - .m = _SUNXI_CCU_DIV(0, 4), + .enable = BIT(31) | BIT(23) | BIT(22), + .lock = BIT(28), + .n = _SUNXI_CCU_MULT(8, 4), + .k = _SUNXI_CCU_MULT_MIN(4, 2, 2), + .m = _SUNXI_CCU_DIV(0, 4), + .max_m_n_ratio = 3, + .min_parent_m_ratio = 24000000, .common = { .reg = 0x040, .hw.init = CLK_HW_INIT("pll-mipi", "pll-video0", From patchwork Sun Mar 10 13:21:15 2024 Content-Type: text/plain; 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Sun, 10 Mar 2024 14:22:33 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1710076953; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=XhGwFTOxsp8TA925vZCjt+JcQqgJocjoqK3BssOmRYM=; b=yqpB/ZFsIC3kVJiHYJxsIUj+zkEdsrbwWRpoL3s3LJXI5NXAT7uCqBmYJynZrZvLl9pG8L 6Lf3AiIu71PVNlRQ+byBfX2w5xMsh44hiyxEqL1EgviV57n1HO7SxCwMJC7nU0l4IemOnT RrgNw4P9jbLAs0TbBFnqURRsmlFipUNhVn5S4doXCmEOhZm/oSXdrr1vjURggphMfKkvQC 5dpf5rQfqOhf+emT9gpdPE3El/+kMKAt1LpILKsR3l49okaMcqcMlZNVVwjrCyXNXwxrdm PycJixMcrT0d1HVm7iYFxB74VZA1c+dD7Yza54IEYi2w6i6csV3XqrYbMO7WTw== From: Frank Oltmanns Date: Sun, 10 Mar 2024 14:21:15 +0100 Subject: [PATCH v4 5/5] arm64: dts: allwinner: a64: Run GPU at 432 MHz Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240310-pinephone-pll-fixes-v4-5-46fc80c83637@oltmanns.dev> References: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> In-Reply-To: <20240310-pinephone-pll-fixes-v4-0-46fc80c83637@oltmanns.dev> To: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , =?utf-8?q?Guido_G=C3=BCnther?= , Purism Kernel Team , Ondrej Jirman , Neil Armstrong , Jessica Zhang , Sam Ravnborg , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, Frank Oltmanns , Erico Nunes X-Developer-Signature: v=1; a=openpgp-sha256; l=1257; i=frank@oltmanns.dev; h=from:subject:message-id; bh=kvvIkTmfQMw8UxSyDxPC93rn0oSCr/Quea9RAybNOn8=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBl7bP6p2D/0yVAajHJzxsF2A2zeZMiqWXbGyGZ0 py+R4ILTJuJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZe2z+gAKCRCaaaIIlErT xzQeC/9jShpjnftS4GkyabYSB2tpbtKkzT+oFr9HD819N1UtksrEvwfmCRDtWbZkHg+E+Id2EFl 5cwQX+IXyN5BYzWsPCCw/Jxf3LqYdbEmmwYWS7YMLBE8VVjpycE3jloPFsYVc4yOxjRW7+MCJxl 5/29M0HefgdbSERNfRe40HeZZGjZHUu4KdUa69QIixrQTZLrLsCFm42Z/UqQJ3VkPn5NiiyJr6E z40Tg+9Ga/rU2uaDcforPsLl/l0y9ayLBoK0UA9C3LijM2DxATNpeWz3iWPwg/YIRp6MvTKNW18 YiHtgkixh18DiLRJBl2Z3G0dhWGU3g9e6EfYoV93t/YeHSmXCxp91JSM+cwxNsgHLKCoZ1jIWsP 82JDNAdA0LyExvZXF5171VphDgB353vTAiSQlb0BlupDKjDFbKCbOfIpcJTDS63WGJ+pBlEi0Xa t/JoCa19Y8thObe2+u87zj51in6LJCujRj8DHXUmwhVWJgMTIO93b65RqRGapzoBPecpg= X-Developer-Key: i=frank@oltmanns.dev; a=openpgp; fpr=02FD257B7F90E6B9A5444F969A69A208944AD3C7 The Allwinner A64's GPU has currently three operating points. However, the BSP runs the GPU fixed at 432 MHz. In addition, at least one of the devices using that SoC - the pinephone - shows unstabilities (see link) that can be circumvented by running the GPU at a fixed rate. Therefore, remove the other two operating points from the GPU OPP table, so that the GPU runs at a fixed rate of 432 MHz. Link: https://gitlab.com/postmarketOS/pmaports/-/issues/805 Acked-by: Erico Nunes Signed-off-by: Frank Oltmanns Acked-by: Jernej Skrabec --- arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi | 8 -------- 1 file changed, 8 deletions(-) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi index 57ac18738c99..c810380aab6d 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a64.dtsi @@ -107,14 +107,6 @@ de: display-engine { gpu_opp_table: opp-table-gpu { compatible = "operating-points-v2"; - opp-120000000 { - opp-hz = /bits/ 64 <120000000>; - }; - - opp-312000000 { - opp-hz = /bits/ 64 <312000000>; - }; - opp-432000000 { opp-hz = /bits/ 64 <432000000>; };