From patchwork Mon Mar 4 07:29:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Oltmanns X-Patchwork-Id: 13580138 Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [80.241.56.171]) (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 7FE6D14013; Mon, 4 Mar 2024 07:30:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.171 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709537418; cv=none; b=Do5Ao4BADEL1X/y9JjUl/vIdJGhVYXEV6pC4RD2tAS064YZCDl1YSgkoW9PC/BUtQETRgui9lIYYKstOw7EvWQUFlLtBjdPxkyYiDLLFLTxkjSR9/9hNG6L2QktMpwjnw8DcldghkENtPUAaQwhxFm2e/Aehg7cmwCeUoALeUx0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709537418; c=relaxed/simple; bh=kDpws4iby8ib+0jukh7K9mXcEL8OMyePEolpMUL5c7o=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; 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Mon, 4 Mar 2024 08:30:12 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oltmanns.dev; s=MBO0001; t=1709537412; 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=UgpgzV2Q/GbIWREFNI+aQD05ef1VFT6JlXRe9heDTVQ=; b=l8NQhouHHw02zPiTPi8CTZt2BeXjrl2oCRomvK5kD34eSkkb7kG1pZQzb6XkyYNJfWrQDg 4eBe0rijvramhPIZKQXWJZxYusiy2oGxBjEtRySfBvmXvlrb03fhZtY6h+MQSxM2M9c4RB fo2eGErHtXOpSXtV9NQauTzBIkQPezQrbzQqac43IjSENN9kSbyw5zRSO5+H7uSZ/rvNDN DdLMpSG1q8i8bKprRsfAJHwDvVpBLiUTFK37W+fGR8KjomsoOA1iNbn3lL6fN2ID8LeyP7 toYasuIckywR9/yEi91m/ikvhHwSuaavJ9XjgKKPxzLU9y+CFyw7bm9r0iW3+w== From: Frank Oltmanns Date: Mon, 04 Mar 2024 08:29:18 +0100 Subject: [PATCH v3 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: <20240304-pinephone-pll-fixes-v3-2-94ab828f269a@oltmanns.dev> References: <20240304-pinephone-pll-fixes-v3-0-94ab828f269a@oltmanns.dev> In-Reply-To: <20240304-pinephone-pll-fixes-v3-0-94ab828f269a@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=1471; i=frank@oltmanns.dev; h=from:subject:message-id; bh=kDpws4iby8ib+0jukh7K9mXcEL8OMyePEolpMUL5c7o=; b=owEB7QES/pANAwAIAZppogiUStPHAcsmYgBl5XhwgX3a4/s+n5hG05HBi6whjKEoqn9VxH3hT kU0ltspgoWJAbMEAAEIAB0WIQQC/SV7f5DmuaVET5aaaaIIlErTxwUCZeV4cAAKCRCaaaIIlErT x4QCC/9XbbJOFIoX2zdz6xo2rY0S6JXjrsQNk3zEBcedF7tVA3C9NOEGeThCxeRGBwyEM0G1Jm/ 6b9GqpMRi0NcAEpIiaVMK71o59Z/S0DXxbkPTa9oYkpkq1KzehEcGS0K7dNtE5LfwRYFPUVYjyi gDEGQkO+ncjBo9uXbdpFNHeLg/j0Hah4k8lFJfSoQwK3m4/Dz7nZ3tC1Ul/iDHluuchD/3F0Fu8 q/4Due10vh8EHiDO7K0lZpbE6a2oL4EZXSL/YWlJo3EPufvOQzVNmX0dEsEbf/0Cv3bdDylPsPT m2Rw0gzhMjLvudqz96hBz30qgVA+bmUyx2ENM9ME7jhu0wmgwqww2PCFJwTUtaYyq5v+R5LbxzC 6dMobEI5ahAEJZypeV5yc+kZGa+uok8d6f0qGs7ZVOlWfjeob8vzEgv1GqLkRkA6Fn5W17vOuya 8rKnEmKvmA1XVqI1XacEtkXDFpLjYF1+Ab4b51STuQCNx+POYQWvRTh4dCrS7C9hdLoQU= 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 Signed-off-by: Frank Oltmanns Tested-by: Diego Roversi Cc: stable@vger.kernel.org Reviewed-by: Maxime Ripard --- 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, }, };