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 3593948122C; Wed, 6 May 2026 14:08:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778076530; cv=none; b=BUsaLKhaDwfRlHWrQWGcq3ofGCEqaf5T8fOgPT2FxaWgGu28ov9+ji7ybLxcZBPmgGiVCC9uLxE6CiMugqXMRuv7kSHkyYM3+TNAaNxBd31S4hMevvysWBX9ob/yFfOLL85J4sozAau3HG48QyXDRfMBeuy8eeWp7akizZ5S/4Q= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778076530; c=relaxed/simple; bh=qjK/96wtPWMp0JjlmFUPrT3YSGjPCrt3dAcC3zE6Muo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=ajIDGMMhR388F7GRBORtwpaLAKYbAFtshxAVmmLgpV8CZ5ITJS/fE5pekIZeYVhUsdK7w6KO6skwAf0+IYsNcG5SzGbYBVr7PzMq66XMfMWtQHBdmze6bzEkaF6tiAehl2tLX/RHWam7VJKAGu+73Tazu1CJqg7l0GrdOyZiV+k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=c4Fs/DtK; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="c4Fs/DtK" Received: by smtp.kernel.org (Postfix) with ESMTPS id 17546C2BCC9; Wed, 6 May 2026 14:08:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1778076530; bh=qjK/96wtPWMp0JjlmFUPrT3YSGjPCrt3dAcC3zE6Muo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=c4Fs/DtKFN4z8lnFk8vud48aOeze7CPcOO7biLGO4EY68t+Fx6kUQ7fQqcElE+cb1 LYuaWLlDdpZji5T4PX8fZz2fyyhstUn+J5YBCc2KYoOYKCmFnUBde2ibLfmWgXVXxh gp0PhwUimuC02h/SaeA1qqBbPsw9KefK4nEKs0o6APYs8fJVj+uBlnVvuRCZ3rjWVW fLxK3sDRgYLstWYSvwtpr53c43SLTXFm39gT8Dvb9zhGy1kbiI4c8BA36C7ooHxTOD EZ/nRNL5FqeRpy9J46++f24z3+BBX5kn7wKP4xLY00MjolQxJlDMv8mB4LgFGlQpgw vDXyGi7kZezxA== Received: from aws-us-west-2-korg-lkml-1.web.codeaurora.org (localhost.localdomain [127.0.0.1]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0EF15CD3443; Wed, 6 May 2026 14:08:50 +0000 (UTC) From: Rodrigo Alencar via B4 Relay Date: Wed, 06 May 2026 15:08:52 +0100 Subject: [PATCH v11 08/11] iio: frequency: adf41513: handle LE synchronization feature Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260506-adf41513-iio-driver-v11-8-2b7e99cfe8f2@analog.com> References: <20260506-adf41513-iio-driver-v11-0-2b7e99cfe8f2@analog.com> In-Reply-To: <20260506-adf41513-iio-driver-v11-0-2b7e99cfe8f2@analog.com> To: linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-doc@vger.kernel.org Cc: Jonathan Cameron , David Lechner , Andy Shevchenko , Lars-Peter Clausen , Michael Hennerich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Jonathan Corbet , Andrew Morton , Petr Mladek , Steven Rostedt , Andy Shevchenko , Rasmus Villemoes , Sergey Senozhatsky , Shuah Khan , Rodrigo Alencar X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778076527; l=3003; i=rodrigo.alencar@analog.com; s=default; h=from:subject:message-id; bh=EP/JwqYZqK8tuQoGf0rqFsb3nPwHZYuWjSh8sPTpzBo=; b=fIw/DQ5KOAOMhschmvEYH9r6vqpbJ9XOSRClYHc6DmNbRXj5A6zkCgR08Od6Yp51kIFC67wJP vmboWHD9cHlCkawxj2RARVFJRMdlpsdrCJIRppdFTIoYuTFWP1LhNn4 X-Developer-Key: i=rodrigo.alencar@analog.com; a=ed25519; pk=ULeHbgU/OYh/PG/4anHDfLgldFItQHAhOktYRVLMFRo= X-Endpoint-Received: by B4 Relay for rodrigo.alencar@analog.com/default with auth_id=561 X-Original-From: Rodrigo Alencar Reply-To: rodrigo.alencar@analog.com From: Rodrigo Alencar When LE sync is enabled, it must be set after powering up and it must be disabled when powering down. It is recommended when using the PLL as a frequency synthesizer, where reference signal will always be present while the device is being configured. Signed-off-by: Rodrigo Alencar --- drivers/iio/frequency/adf41513.c | 35 ++++++++++++++++++++++++++++++++--- 1 file changed, 32 insertions(+), 3 deletions(-) diff --git a/drivers/iio/frequency/adf41513.c b/drivers/iio/frequency/adf41513.c index 04bb70f8db53..6072ceae9bfb 100644 --- a/drivers/iio/frequency/adf41513.c +++ b/drivers/iio/frequency/adf41513.c @@ -215,6 +215,7 @@ struct adf41513_data { bool phase_detector_polarity; bool logic_lvl_1v8_en; + bool le_sync_en; }; struct adf41513_pll_settings { @@ -627,13 +628,27 @@ static int adf41513_set_frequency(struct adf41513_state *st, u64 freq_uhz, u16 s static int adf41513_suspend(struct adf41513_state *st) { st->regs[ADF41513_REG6] |= FIELD_PREP(ADF41513_REG6_POWER_DOWN_MSK, 1); + st->regs[ADF41513_REG12] &= ~ADF41513_REG12_LE_SELECT_MSK; return adf41513_sync_config(st, ADF41513_SYNC_DIFF); } static int adf41513_resume(struct adf41513_state *st) { + int ret; + st->regs[ADF41513_REG6] &= ~ADF41513_REG6_POWER_DOWN_MSK; - return adf41513_sync_config(st, ADF41513_SYNC_DIFF); + ret = adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + + if (st->data.le_sync_en) { + st->regs[ADF41513_REG12] |= ADF41513_REG12_LE_SELECT_MSK; + ret = adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + } + + return 0; } static ssize_t adf41513_read_resolution(struct iio_dev *indio_dev, @@ -890,6 +905,8 @@ static int adf41513_parse_fw(struct adf41513_state *st) "invalid lock detect count: %u\n", tmp); st->data.lock_detect_count = tmp; + /* load enable sync */ + st->data.le_sync_en = device_property_read_bool(dev, "adi,le-sync-enable"); st->data.freq_resolution_uhz = MICROHZ_PER_HZ; return 0; @@ -897,6 +914,7 @@ static int adf41513_parse_fw(struct adf41513_state *st) static int adf41513_setup(struct adf41513_state *st) { + int ret; u32 tmp; memset(st->regs_hw, 0xFF, sizeof(st->regs_hw)); @@ -930,8 +948,19 @@ static int adf41513_setup(struct adf41513_state *st) st->data.logic_lvl_1v8_en ? 0 : 1); /* perform initialization sequence with power-up frequency */ - return adf41513_set_frequency(st, st->data.power_up_frequency_hz * MICRO, - ADF41513_SYNC_ALL); + ret = adf41513_set_frequency(st, st->data.power_up_frequency_hz * MICRO, + ADF41513_SYNC_ALL); + if (ret) + return ret; + + if (st->data.le_sync_en) { + st->regs[ADF41513_REG12] |= ADF41513_REG12_LE_SELECT_MSK; + ret = adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + } + + return 0; } static void adf41513_power_down(void *data) -- 2.43.0