From patchwork Thu May 18 19:36:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Judith Mendez X-Patchwork-Id: 13247273 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 BE9A93D389 for ; Thu, 18 May 2023 19:36:49 +0000 (UTC) Received: from fllv0015.ext.ti.com (fllv0015.ext.ti.com [198.47.19.141]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 00BC6E0; Thu, 18 May 2023 12:36:46 -0700 (PDT) Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 34IJaEx4111046; Thu, 18 May 2023 14:36:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1684438574; bh=WNu+0kk84vY5N1ixcyEihltPbCfUf1wV2gQNQmZvxFA=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=HW7S7nc2iHONnG1rkw8Z7QDdwVSEWUWqWA/kF3nKYxQveAXSxzFNX88HwRpXXT5Od njanJQeLi3vHkWk2QBNBf5rdQf1TQtpssOGDeWFG3E2RYUQwMuI8vv23rA401ZB0ih IF1Z+iSJUuNxxkereGwUZLPXxlkqITMBveoqN64I= Received: from DFLE102.ent.ti.com (dfle102.ent.ti.com [10.64.6.23]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 34IJaEZS103785 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 18 May 2023 14:36:14 -0500 Received: from DFLE100.ent.ti.com (10.64.6.21) 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; Thu, 18 May 2023 14:36:13 -0500 Received: from fllv0039.itg.ti.com (10.64.41.19) by DFLE100.ent.ti.com (10.64.6.21) 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; Thu, 18 May 2023 14:36:13 -0500 Received: from a0498204.dal.design.ti.com (ileaxei01-snat.itg.ti.com [10.180.69.5]) by fllv0039.itg.ti.com (8.15.2/8.15.2) with ESMTP id 34IJaDvU053146; Thu, 18 May 2023 14:36:13 -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 , , , Oliver Hartkopp , Conor Dooley Subject: [PATCH v6 1/2] dt-bindings: net: can: Remove interrupt properties for MCAN Date: Thu, 18 May 2023 14:36:12 -0500 Message-ID: <20230518193613.15185-2-jm@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230518193613.15185-1-jm@ti.com> References: <20230518193613.15185-1-jm@ti.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED, SPF_HELO_PASS,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@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. Acked-by: Krzysztof Kozlowski Signed-off-by: Judith Mendez --- Changelog: 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>; + }; + }; + ...