From patchwork Sun Jul 10 11:52:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Biju Das X-Patchwork-Id: 12912514 X-Patchwork-Delegate: kuba@kernel.org 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 98138CCA479 for ; Sun, 10 Jul 2022 11:53:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229622AbiGJLxM (ORCPT ); Sun, 10 Jul 2022 07:53:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40482 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229521AbiGJLxL (ORCPT ); Sun, 10 Jul 2022 07:53:11 -0400 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 17BF911C07; Sun, 10 Jul 2022 04:53:08 -0700 (PDT) X-IronPort-AV: E=Sophos;i="5.92,260,1650898800"; d="scan'208";a="127337592" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 10 Jul 2022 20:53:08 +0900 Received: from localhost.localdomain (unknown [10.226.92.4]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 11BC74005E08; Sun, 10 Jul 2022 20:53:02 +0900 (JST) From: Biju Das To: Wolfgang Grandegger , Marc Kleine-Budde , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski Cc: Biju Das , linux-can@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, =?utf-8?q?Uwe_Kleine-K?= =?utf-8?q?=C3=B6nig?= , Geert Uytterhoeven , Chris Paterson , Biju Das , linux-renesas-soc@vger.kernel.org Subject: [PATCH v4 2/6] dt-bindings: can: nxp,sja1000: Document RZ/N1{D,S} support Date: Sun, 10 Jul 2022 12:52:44 +0100 Message-Id: <20220710115248.190280-3-biju.das.jz@bp.renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220710115248.190280-1-biju.das.jz@bp.renesas.com> References: <20220710115248.190280-1-biju.das.jz@bp.renesas.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org Add CAN binding documentation for Renesas RZ/N1 SoC. The SJA1000 CAN controller on RZ/N1 SoC has some differences compared to others like it has no clock divider register (CDR) support and it has no HW loopback (HW doesn't see tx messages on rx), so introduced a new compatible 'renesas,rzn1-sja1000' to handle these differences. Signed-off-by: Biju Das Reviewed-by: Krzysztof Kozlowski --- v3->v4: * Removed clock-names * Fixed indentation and added extra space in example. v2->v3: * Added reg-io-width is required property for renesas,rzn1-sja1000. v1->v2: * Updated commit description. * Added an example for RZ/N1D SJA1000 usage --- .../bindings/net/can/nxp,sja1000.yaml | 39 +++++++++++++++++-- 1 file changed, 35 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/net/can/nxp,sja1000.yaml b/Documentation/devicetree/bindings/net/can/nxp,sja1000.yaml index ca9bfdfa50ab..b1327c5b86cf 100644 --- a/Documentation/devicetree/bindings/net/can/nxp,sja1000.yaml +++ b/Documentation/devicetree/bindings/net/can/nxp,sja1000.yaml @@ -11,9 +11,15 @@ maintainers: properties: compatible: - enum: - - nxp,sja1000 - - technologic,sja1000 + oneOf: + - enum: + - nxp,sja1000 + - technologic,sja1000 + - items: + - enum: + - renesas,r9a06g032-sja1000 # RZ/N1D + - renesas,r9a06g033-sja1000 # RZ/N1S + - const: renesas,rzn1-sja1000 # RZ/N1 reg: maxItems: 1 @@ -21,6 +27,9 @@ properties: interrupts: maxItems: 1 + clocks: + maxItems: 1 + reg-io-width: $ref: /schemas/types.yaml#/definitions/uint32 description: I/O register width (in bytes) implemented by this device @@ -82,10 +91,20 @@ allOf: properties: compatible: contains: - const: technologic,sja1000 + enum: + - technologic,sja1000 + - renesas,rzn1-sja1000 then: required: - reg-io-width + - if: + properties: + compatible: + contains: + const: renesas,rzn1-sja1000 + then: + required: + - clocks unevaluatedProperties: false @@ -99,3 +118,15 @@ examples: nxp,tx-output-config = <0x06>; nxp,external-clock-frequency = <24000000>; }; + + - | + #include + #include + + can@52104000 { + compatible = "renesas,r9a06g032-sja1000", "renesas,rzn1-sja1000"; + reg = <0x52104000 0x800>; + reg-io-width = <4>; + interrupts = ; + clocks = <&sysctrl R9A06G032_HCLK_CAN0>; + };