From patchwork Mon May 22 06:31:54 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jai Luthra X-Patchwork-Id: 13249813 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23CF4C7EE29 for ; Mon, 22 May 2023 06:32:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230357AbjEVGcX (ORCPT ); Mon, 22 May 2023 02:32:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47242 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229621AbjEVGcW (ORCPT ); Mon, 22 May 2023 02:32:22 -0400 Received: from lelv0143.ext.ti.com (lelv0143.ext.ti.com [198.47.23.248]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A9982CF; Sun, 21 May 2023 23:32:17 -0700 (PDT) Received: from lelv0265.itg.ti.com ([10.180.67.224]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 34M6Vwcl087174; Mon, 22 May 2023 01:31:58 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1684737118; bh=Y1PgBFAW58oQQelrLWGs2ihl4Rz/2sGaWxADqzqTSGU=; h=From:Subject:Date:To:CC; b=L1TV4L3zw4Bs6wZFDIPS/7eC0hB/RaviAvzD0mI3pAThPQpwnRrAujSLbbLdHvsit YcXhFPLIOu9MGeq72RN3L7dTLQL1frC8CcHbzvvLDhTiyrpabXn3iiuBrkvOi7S0cs R9AfnGGRB/xVMgn6os/SvglgrpwNagXB23FebX7g= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 34M6VweZ027528 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 22 May 2023 01:31:58 -0500 Received: from DFLE110.ent.ti.com (10.64.6.31) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Mon, 22 May 2023 01:31:58 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE110.ent.ti.com (10.64.6.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Mon, 22 May 2023 01:31:58 -0500 Received: from localhost (ileaxei01-snat.itg.ti.com [10.180.69.5]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id 34M6VvXb086761; Mon, 22 May 2023 01:31:58 -0500 From: Jai Luthra Subject: [PATCH v2 0/2] clk: keystone: syscon-clk: Enable audio reference clock Date: Mon, 22 May 2023 12:01:54 +0530 Message-ID: <20230515-refclk-v2-0-fc9ff08826f5@ti.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIAFoMa2QC/2WNyw6CMBBFf4XM2po+fbDyPwwLaAeZqK1pCcGQ/ rstW5fn5uTcDRJGwgRts0HEhRIFX0AeGrBT7x/IyBUGyaXiRhgWcbSvJzOD0dopoa1UUOShT8i G2Hs7Vd3jOtf5U3Ra9/69KzxRmkP87neLqOtfeRGMM4OX68iFO52Vus10tOENXc75BypTDkuwA AAA To: Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Santosh Shilimkar CC: Vignesh Raghavendra , Andrew Davis , , , , Jai Luthra X-Mailer: b4 0.12.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2633; i=j-luthra@ti.com; h=from:subject:message-id; bh=00+PDpG4Jh6Ip7rfWxUl0DcfQvjrKR/hkRa7/qnO7QY=; b=owEBbQKS/ZANAwAIAUPekfkkmnFFAcsmYgBkawxbG16yp1rV4j7+lfvIbmXvUHA3Kg9cA3QcM SsXiQhv+hCJAjMEAAEIAB0WIQRN4NgY5dV16NRar8VD3pH5JJpxRQUCZGsMWwAKCRBD3pH5JJpx Rf5REAC5+mNi8dliL12u8XTdPamsw72iVxGm2JblwiDvBw5acWQnWZnHnkE9IkwMrQd8ClSlgBI zWPXCstQqylbVElX2llbgs8I9KuXjkb2mHvTXsiFaQSlKJJCabsy7A0qVlsk6mf/09DMb6AKVCv T6OwTGIOFta74gzsHEu7wOFDzGVQXynVbXa5HPYwogx/CNwBdl/k/h1qbbpw8LVunW5wXz5qRxs 6jsXMAn02mABr+jmS38Unk6TSeFB9+rL2ySl1TNK+Ak/Pgh4zRrDe8NZ72Vdt0waQgys+SBhWuj 1QlYs2/EJaQGZJFIqImj82yj6QwyBOJ1EAb8ec2Kd5tcxUTjmKDJUz0SwGuK98rOHg/x5cbOeOn mS/BOUVVRMnf57TzS8bcXUZTTtjVM1/ffz/ADMeXYcDlaxaIPRa3RfAi5ilTKENu0mFtLJ8MMG4 9EtpsT7NRf6L3ozFeVJJJU5+Szuu7g/FW7JyvJbcr9P7u7j1bgurRvvDTS/q3unzUdYQXrVXRcz 2ELTuSGZ/oDSIIT9qT4ptdxQRxLkrh9HTe9mDQmCqHDdO9Vf2IhPsObs+T8AmZIITC5TtMImNQR xPl5Gb2ltbYPxGgd1IDRGnkEtouUXaQfMILWU36ba6CrGzqLao9HedNU04/k9npqjQdlcnaywDM GhXAGk2vT5oK0QQ== X-Developer-Key: i=j-luthra@ti.com; a=openpgp; fpr=4DE0D818E5D575E8D45AAFC543DE91F9249A7145 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-clk@vger.kernel.org TI's AM62 SoC can optionally provide two audio reference clocks (AUDIO_REFCLKx) to external peripherals. By default the reference clock is looped-back inside the SoC to a mux that goes to McASP AHCLK, but can optionally be enabled as an output to peripherals outside the SoC by setting a bit through CTRL_MMR registers. This patch series extends the existing syscon-clk driver to support the audio reference clock, and also adds new device tree bindings documentation. Please apply this on-top-of Andrew's series [1] removing the unnecessary dependency on syscon compatible. Signed-off-by: Jai Luthra --- Changes in v2: - Removed "syscon" compatible and rebased on top of [1] - Moved reg above other properties in bindings yaml - Link to v1: https://lore.kernel.org/r/20230515-refclk-v1-0-5e89f01d6733@ti.com [1]: https://lore.kernel.org/linux-clk/20230516184626.154892-1-afd@ti.com/#t Range-diff from v1: 1: 8107cb140f7d ! 1: a690c2044971 dt-bindings: clock: Add binding documentation for TI Audio REFCLK @@ Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml (new) + compatible: + items: + - const: ti,am62-audio-refclk -+ - const: syscon -+ -+ "#clock-cells": -+ const: 0 + + reg: + maxItems: 1 + ++ "#clock-cells": ++ const: 0 ++ + clocks: + maxItems: 1 + +required: + - compatible -+ - "#clock-cells" + - reg ++ - "#clock-cells" + - clocks + +additionalProperties: false @@ Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml (new) +examples: + - | + audio_refclk0: clock@82e0 { -+ compatible = "ti,am62-audio-refclk", "syscon"; ++ compatible = "ti,am62-audio-refclk"; + reg = <0x82e0 0x4>; + clocks = <&k3_clks 157 0>; + assigned-clocks = <&k3_clks 157 0>; 2: 5a555757fe42 = 2: 854166d4305f clk: keystone: syscon-clk: Add support for audio refclk --- Jai Luthra (2): dt-bindings: clock: Add binding documentation for TI Audio REFCLK clk: keystone: syscon-clk: Add support for audio refclk .../bindings/clock/ti,am62-audio-refclk.yaml | 43 ++++++++++++++++++++++ drivers/clk/keystone/syscon-clk.c | 43 +++++++++++++++++++--- 2 files changed, 81 insertions(+), 5 deletions(-) --- base-commit: 62f117ff3cbc8ea2bf9be36f019eba60369b6a81 change-id: 20230515-refclk-5b544d314c23 Best regards,