From mboxrd@z Thu Jan 1 00:00:00 1970 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 59AA5C7EE31 for ; Tue, 23 May 2023 02:38:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234742AbjEWCiW (ORCPT ); Mon, 22 May 2023 22:38:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49888 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234721AbjEWCiU (ORCPT ); Mon, 22 May 2023 22:38:20 -0400 Received: from lelv0142.ext.ti.com (lelv0142.ext.ti.com [198.47.23.249]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8CE39CA; Mon, 22 May 2023 19:38:19 -0700 (PDT) Received: from fllv0034.itg.ti.com ([10.64.40.246]) by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 34N2bpRA096282; Mon, 22 May 2023 21:37:51 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1684809471; bh=JBfvNxVE/qLOsGVroHH8hujUwwjvB38Vr4pscuPer/w=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=UlgxJ4uKQvMbVMQIh3SJ7PFtesixKtB69F1O7CED/FPkreOyS+h43Htv+pqmTHxpY 7wfWDTBHVBqRJ/L+LLIzM95Y97rAU1UTFIhwbPSt9h7yqsmVguQmrbdaJsg7tqB89s 9bwgYxt0wW6RQKqjVn55iI9kaq10OvZSgVFP8MsA= Received: from DFLE102.ent.ti.com (dfle102.ent.ti.com [10.64.6.23]) by fllv0034.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 34N2bo5O074799 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Mon, 22 May 2023 21:37:50 -0500 Received: from DFLE106.ent.ti.com (10.64.6.27) by DFLE102.ent.ti.com (10.64.6.23) 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 21:37:50 -0500 Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE106.ent.ti.com (10.64.6.27) 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 21:37:50 -0500 Received: from a0498204.dal.design.ti.com (ileaxei01-snat2.itg.ti.com [10.180.69.6]) by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 34N2bnsX031957; Mon, 22 May 2023 21:37:50 -0500 From: Judith Mendez To: Chandrasekar Ramakrishnan , CC: Wolfgang Grandegger , Marc Kleine-Budde , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , , , Schuyler Patton , Tero Kristo , Rob Herring , Krzysztof Kozlowski , Conor Dooley , , Oliver Hartkopp , Tony Lindgren Subject: [PATCH v7 1/2] dt-bindings: net: can: Remove interrupt properties for MCAN Date: Mon, 22 May 2023 21:37:48 -0500 Message-ID: <20230523023749.4526-2-jm@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230523023749.4526-1-jm@ti.com> References: <20230523023749.4526-1-jm@ti.com> MIME-Version: 1.0 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Precedence: bulk List-ID: X-Mailing-List: linux-can@vger.kernel.org On AM62x SoC, MCANs on MCU domain do not have hardware interrupt routed to A53 Linux, instead they will use software interrupt by timer polling. To enable timer polling method, interrupts should be optional so remove interrupts property from required section and add an example for MCAN node with timer polling enabled. Signed-off-by: Judith Mendez --- Changelog: v7: 1. No changes v6: 1. No changes v5: 1. Remove poll-interval 2. Remove oneOf that selects interrupts/interrupt-names or poll-interval v3: 1. Update binding poll-interval description 2. Add oneOf to select interrupts/interrupt-names or poll-interval v2: 1. Add poll-interval property to enable timer polling method 2. Add example using poll-interval property --- .../bindings/net/can/bosch,m_can.yaml | 20 +++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml index 67879aab623b..bb518c831f7b 100644 --- a/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml +++ b/Documentation/devicetree/bindings/net/can/bosch,m_can.yaml @@ -122,8 +122,6 @@ required: - compatible - reg - reg-names - - interrupts - - interrupt-names - clocks - clock-names - bosch,mram-cfg @@ -132,6 +130,7 @@ additionalProperties: false examples: - | + // Example with interrupts #include can@20e8000 { compatible = "bosch,m_can"; @@ -149,4 +148,21 @@ examples: }; }; + - | + // Example with timer polling + #include + can@20e8000 { + compatible = "bosch,m_can"; + reg = <0x020e8000 0x4000>, <0x02298000 0x4000>; + reg-names = "m_can", "message_ram"; + clocks = <&clks IMX6SX_CLK_CANFD>, + <&clks IMX6SX_CLK_CANFD>; + clock-names = "hclk", "cclk"; + bosch,mram-cfg = <0x0 0 0 32 0 0 0 1>; + + can-transceiver { + max-bitrate = <5000000>; + }; + }; + ... -- 2.17.1