From nobody Thu Apr 2 20:28:25 2026 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 297AB3D1713; Fri, 20 Mar 2026 16:27:33 +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=1774024053; cv=none; b=dHKd0Jl2VZ4limKZIcubZGTfA3/euTY8rqlDabcT9G59OPPjw10EQVLEyH+ZGNq8VJCYdiyQYMqCwzpFdszix9l6uTMhTfCyo1HtH50jwY/s65JfY6XaHTgrP4aBXqbGwjgewjP0Jka2o+9GttWO0wEezUqrHiob6uXIM2B9xg4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774024053; c=relaxed/simple; bh=UUGqq6KuJ9zIG0X2o0ubuPGPMlCBeEdzgPCnCWv6v00=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=K3nt+ErTwtf3DDeS79jIrF71twKO+eoWe8n87Rn0ODhKd3QBEMoa+048Ed7feIPNMPsLX1y2VzDVBwBaQRnq6ry0/MX6LImateaAEYl9Yiv/JmZPOx0hbH+id8MRTDWXeCh/HOwadw/AHJOam0U9qa4SEG/QRXMa1sgMH/OqvvQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=q/BGTgzV; 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="q/BGTgzV" Received: by smtp.kernel.org (Postfix) with ESMTPS id 02723C2BCB0; Fri, 20 Mar 2026 16:27:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774024053; bh=UUGqq6KuJ9zIG0X2o0ubuPGPMlCBeEdzgPCnCWv6v00=; h=From:Date:Subject:References:In-Reply-To:To:Cc:Reply-To:From; b=q/BGTgzVzoC+HBPai968S5R5Qhq42xxOmUg+QGFHlWuKog705U3l5zQ6+JhhEVocZ nkhzKIF77ufGJn/u+E8qFNav8OoVIiR2o09QExptl1A/ZfvXKsKhyK939uXitvhQDV NWTstxXuqkUmUzYrFHYlxWgHYH/wux4lhMAXIkQZYFzXx2yVaMWwKJmlhiyRxFXsV+ 54LUBF5TlC6t1BEon7zVNnE+6bA3bVHTVmqIfA7ZlQS98135Gj2tO1OkFhGgiT9LIT g7Em1qY2lDnUhmplDOkpeonhJyc/yTlZ2tuKkj4Nj0sGK3/eaN4q2UhJrhe4h8RVuI 9370hecuGtbeA== 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 E737E10987AA; Fri, 20 Mar 2026 16:27:32 +0000 (UTC) From: Rodrigo Alencar via B4 Relay Date: Fri, 20 Mar 2026 16:27:31 +0000 Subject: [PATCH v9 6/9] iio: frequency: adf41513: handle LE synchronization feature Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20260320-adf41513-iio-driver-v9-6-132f0d076374@analog.com> References: <20260320-adf41513-iio-driver-v9-0-132f0d076374@analog.com> In-Reply-To: <20260320-adf41513-iio-driver-v9-0-132f0d076374@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=1774024051; l=2998; i=rodrigo.alencar@analog.com; s=default; h=from:subject:message-id; bh=La2NnbCEmWKuh8TItMnd816K8WFyfx5bTjA0xtRndnc=; b=wwLZTRpVdSazqB5KW8wHgh/C/CmjvkjOtYA83WtQmKUfaEyb3nBDrFSgxiCpkEZmZ3W2Z+6jJ T1iR37lbKR4ADl0YZljqD33+PDLwp23rroNm7OtQX2xU/WDeCgvpOLp 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 is must be set after powering up and 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/adf41= 513.c index 5a0682667d1f..caae9d53c3e2 100644 --- a/drivers/iio/frequency/adf41513.c +++ b/drivers/iio/frequency/adf41513.c @@ -222,6 +222,7 @@ struct adf41513_data { bool phase_detector_polarity; =20 bool logic_lvl_1v8_en; + bool le_sync_en; }; =20 struct adf41513_pll_settings { @@ -634,13 +635,27 @@ static int adf41513_set_frequency(struct adf41513_sta= te *st, u64 freq_uhz, u16 s static int adf41513_suspend(struct adf41513_state *st) { st->regs[ADF41513_REG6] |=3D FIELD_PREP(ADF41513_REG6_POWER_DOWN_MSK, 1); + st->regs[ADF41513_REG12] &=3D ~ADF41513_REG12_LE_SELECT_MSK; return adf41513_sync_config(st, ADF41513_SYNC_DIFF); } =20 static int adf41513_resume(struct adf41513_state *st) { + int ret; + st->regs[ADF41513_REG6] &=3D ~ADF41513_REG6_POWER_DOWN_MSK; - return adf41513_sync_config(st, ADF41513_SYNC_DIFF); + ret =3D adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + + if (st->data.le_sync_en) { + st->regs[ADF41513_REG12] |=3D ADF41513_REG12_LE_SELECT_MSK; + ret =3D adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + } + + return ret; } =20 static ssize_t adf41513_read_uhz(struct iio_dev *indio_dev, @@ -933,6 +948,8 @@ static int adf41513_parse_fw(struct adf41513_state *st) "invalid lock detect count: %u\n", tmp); st->data.lock_detect_count =3D tmp; =20 + /* load enable sync */ + st->data.le_sync_en =3D device_property_read_bool(dev, "adi,le-sync-enabl= e"); st->data.freq_resolution_uhz =3D MICROHZ_PER_HZ; =20 return 0; @@ -940,6 +957,7 @@ static int adf41513_parse_fw(struct adf41513_state *st) =20 static int adf41513_setup(struct adf41513_state *st) { + int ret; u32 tmp; =20 memset(st->regs_hw, 0xFF, sizeof(st->regs_hw)); @@ -973,8 +991,19 @@ static int adf41513_setup(struct adf41513_state *st) st->data.logic_lvl_1v8_en ? 0 : 1); =20 /* perform initialization sequence with power-up frequency */ - return adf41513_set_frequency(st, st->data.power_up_frequency_hz * MICRO, - ADF41513_SYNC_ALL); + ret =3D 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] |=3D ADF41513_REG12_LE_SELECT_MSK; + ret =3D adf41513_sync_config(st, ADF41513_SYNC_DIFF); + if (ret) + return ret; + } + + return 0; } =20 static void adf41513_power_down(void *data) --=20 2.43.0