From patchwork Mon Feb 29 12:37:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ramesh Shanmugasundaram X-Patchwork-Id: 589904 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id E30E5140AF3 for ; Mon, 29 Feb 2016 23:42:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754092AbcB2MmB (ORCPT ); Mon, 29 Feb 2016 07:42:01 -0500 Received: from relmlor4.renesas.com ([210.160.252.174]:25372 "EHLO relmlie3.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752150AbcB2MmA (ORCPT ); Mon, 29 Feb 2016 07:42:00 -0500 Received: from unknown (HELO relmlir2.idc.renesas.com) ([10.200.68.152]) by relmlie3.idc.renesas.com with ESMTP; 29 Feb 2016 21:41:57 +0900 Received: from relmlac4.idc.renesas.com (relmlac4.idc.renesas.com [10.200.69.24]) by relmlir2.idc.renesas.com (Postfix) with ESMTP id AC7814E1B1; Mon, 29 Feb 2016 21:41:57 +0900 (JST) Received: by relmlac4.idc.renesas.com (Postfix, from userid 0) id 97B26480A4; Mon, 29 Feb 2016 21:41:57 +0900 (JST) Received: from relmlac4.idc.renesas.com (localhost [127.0.0.1]) by relmlac4.idc.renesas.com (Postfix) with ESMTP id 92AA6480A3; Mon, 29 Feb 2016 21:41:57 +0900 (JST) Received: from relmlii1.idc.renesas.com [10.200.68.65] by relmlac4.idc.renesas.com with ESMTP id XAB07751; Mon, 29 Feb 2016 21:41:57 +0900 X-IronPort-AV: E=Sophos;i="5.22,520,1449500400"; d="scan'208";a="205390927" Received: from unknown (HELO localhost.localdomain) ([172.29.43.62]) by relmlii1.idc.renesas.com with ESMTP; 29 Feb 2016 21:41:53 +0900 From: Ramesh Shanmugasundaram To: mkl@pengutronix.de, wg@grandegger.com, robh+dt@kernel.org, pawel.moll@arm.com, mark.rutland@arm.com, ijc+devicetree@hellion.org.uk, galak@codeaurora.org Cc: linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-can@vger.kernel.org, netdev@vger.kernel.org, geert+renesas@glider.be, horms+renesas@verge.net.au, chris.paterson2@renesas.com, Ramesh Shanmugasundaram Subject: [PATCH] can: rcar_can: Add r8a7795 support Date: Mon, 29 Feb 2016 12:37:25 +0000 Message-Id: <1456749445-50766-1-git-send-email-ramesh.shanmugasundaram@bp.renesas.com> X-Mailer: git-send-email 1.9.1 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Added r8a7795 SoC support. Signed-off-by: Ramesh Shanmugasundaram Acked-by: Rob Herring --- Hi All, This patch is based on linux-can-next (tag:linux-can-next-for-4.6-20160226) Pinctrl & Clock related to the controller are already submitted as below: https://lkml.org/lkml/2016/2/25/546 https://lkml.org/lkml/2016/2/26/452 http://www.spinics.net/lists/arm-kernel/msg487238.html Changes since v1: * Rebased from linux-next to linux-can-next * Removed clock rounding hack (http://www.spinics.net/lists/netdev/msg366611.html) * CAN dtsi changes will be submitted separately based on linux-next (http://marc.info/?l=linux-can&m=145674764815430&w=2) Documentation/devicetree/bindings/net/can/rcar_can.txt | 11 +++++++++++ drivers/net/can/Kconfig | 2 +- drivers/net/can/rcar_can.c | 1 + 3 files changed, 13 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/can/rcar_can.txt b/Documentation/devicetree/bindings/net/can/rcar_can.txt index 65edc05..8d40ab2 100644 --- a/Documentation/devicetree/bindings/net/can/rcar_can.txt +++ b/Documentation/devicetree/bindings/net/can/rcar_can.txt @@ -9,8 +9,10 @@ Required properties: "renesas,can-r8a7792" if CAN controller is a part of R8A7792 SoC. "renesas,can-r8a7793" if CAN controller is a part of R8A7793 SoC. "renesas,can-r8a7794" if CAN controller is a part of R8A7794 SoC. + "renesas,can-r8a7795" if CAN controller is a part of R8A7795 SoC. "renesas,rcar-gen1-can" for a generic R-Car Gen1 compatible device. "renesas,rcar-gen2-can" for a generic R-Car Gen2 compatible device. + "renesas,rcar-gen3-can" for a generic R-Car Gen3 compatible device. When compatible with the generic version, nodes must list the SoC-specific version corresponding to the platform first followed by the generic version. @@ -22,6 +24,15 @@ Required properties: - pinctrl-0: pin control group to be used for this controller. - pinctrl-names: must be "default". +Required properties for "renesas,can-r8a7795" compatible: +In R8A7795 SoC, "clkp2" can be CANFD clock. This is a div6 clock and can be +used by both CAN and CAN FD controller at the same time. It needs to be scaled +to maximum frequency if any of these controllers use it. This is done using +the below properties. + +- assigned-clocks: phandle of clkp2(CANFD) clock. +- assigned-clock-rates: maximum frequency of this clock. + Optional properties: - renesas,can-clock-select: R-Car CAN Clock Source Select. Valid values are: <0x0> (default) : Peripheral clock (clkp1) diff --git a/drivers/net/can/Kconfig b/drivers/net/can/Kconfig index 164ccde..0d40aef 100644 --- a/drivers/net/can/Kconfig +++ b/drivers/net/can/Kconfig @@ -106,7 +106,7 @@ config CAN_JANZ_ICAN3 config CAN_RCAR tristate "Renesas R-Car CAN controller" - depends on ARM + depends on ARCH_RENESAS || ARM ---help--- Say Y here if you want to use CAN controller found on Renesas R-Car SoCs. diff --git a/drivers/net/can/rcar_can.c b/drivers/net/can/rcar_can.c index ad3d2e0..788459f 100644 --- a/drivers/net/can/rcar_can.c +++ b/drivers/net/can/rcar_can.c @@ -906,6 +906,7 @@ static const struct of_device_id rcar_can_of_table[] __maybe_unused = { { .compatible = "renesas,can-r8a7791" }, { .compatible = "renesas,rcar-gen1-can" }, { .compatible = "renesas,rcar-gen2-can" }, + { .compatible = "renesas,rcar-gen3-can" }, { } }; MODULE_DEVICE_TABLE(of, rcar_can_of_table);