From patchwork Wed Mar 13 19:49:52 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Laxman Dewangan X-Patchwork-Id: 2264851 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id B8E933FD8C for ; Wed, 13 Mar 2013 19:55:31 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UFrjL-0004qF-Ps; Wed, 13 Mar 2013 19:52:55 +0000 Received: from hqemgate04.nvidia.com ([216.228.121.35]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UFriX-0004eZ-II for linux-arm-kernel@lists.infradead.org; Wed, 13 Mar 2013 19:52:07 +0000 Received: from hqnvupgp08.nvidia.com (Not Verified[216.228.121.13]) by hqemgate04.nvidia.com id ; Wed, 13 Mar 2013 12:52:00 -0700 Received: from hqemhub02.nvidia.com ([172.17.108.22]) by hqnvupgp08.nvidia.com (PGP Universal service); Wed, 13 Mar 2013 12:45:25 -0700 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Wed, 13 Mar 2013 12:45:25 -0700 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by hqemhub02.nvidia.com (172.20.150.31) with Microsoft SMTP Server id 8.3.298.1; Wed, 13 Mar 2013 12:52:03 -0700 Received: from daphne.nvidia.com (Not Verified[172.16.212.96]) by hqnvemgw01.nvidia.com with MailMarshal (v7,1,2,5326) id ; Wed, 13 Mar 2013 12:52:03 -0700 Received: from ldewangan-ubuntu.nvidia.com ([10.19.65.30]) by daphne.nvidia.com (8.13.8+Sun/8.8.8) with ESMTP id r2DJprmo011912; Wed, 13 Mar 2013 12:52:01 -0700 (PDT) From: Laxman Dewangan To: Subject: [PATCH V3 3/5] ARM: tegra:add aliases and DMA requestor for serial nodes of Tegra114 Date: Thu, 14 Mar 2013 01:19:52 +0530 Message-ID: <1363204194-19487-4-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1363204194-19487-1-git-send-email-ldewangan@nvidia.com> References: <1363204194-19487-1-git-send-email-ldewangan@nvidia.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130313_155205_777911_730D5A16 X-CRM114-Status: GOOD ( 10.98 ) X-Spam-Score: -9.3 (---------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-9.3 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [216.228.121.35 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -2.4 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-tegra@vger.kernel.org, Laxman Dewangan , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Add APB DMA requestor and serial aliases for serial controller. There will be two serial driver i.e. 8250 based simple serial driver and APB DMA based serial driver for higher baudrate and performace. The simple serial driver get enabled with compatible "nvidia,tegra114-uart", "nvidia,tegra20-uart" and APB DMA based driver will get enabled with compatible "nvidia,tegra114-hsuart", "nvidia,tegra30-hsuart". Signed-off-by: Laxman Dewangan --- Changes from V1: - Remove UARTB car id correction. Make the compatible with tegra114 and tegra30 for hsuart and tegra20 for simple uart driver. Changes from V2: - Rebase to for-3.10/dt of Stephen's tegra tree. arch/arm/boot/dts/tegra114.dtsi | 27 +++++++++++++++++++++++---- 1 files changed, 23 insertions(+), 4 deletions(-) diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra114.dtsi index ce44938..5a41d04 100644 --- a/arch/arm/boot/dts/tegra114.dtsi +++ b/arch/arm/boot/dts/tegra114.dtsi @@ -4,6 +4,13 @@ compatible = "nvidia,tegra114"; interrupt-parent = <&gic>; + aliases { + serial0 = &uarta; + serial1 = &uartb; + serial2 = &uartc; + serial3 = &uartd; + }; + gic: interrupt-controller { compatible = "arm,cortex-a15-gic"; #interrupt-cells = <3>; @@ -98,35 +105,47 @@ 0x70003000 0x40c>; /* Mux registers */ }; - serial@70006000 { + /* + * There are two serial driver i.e. 8250 based simple serial + * driver and APB DMA based serial driver for higher baudrate + * and performace. To enable the 8250 based driver, the compatible + * is "nvidia,tegra114-uart", "nvidia,tegra20-uart" and to enable + * the APB DMA based serial driver, the comptible is + * "nvidia,tegra114-hsuart", "nvidia,tegra30-hsuart". + */ + uarta: serial@70006000 { compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart"; reg = <0x70006000 0x40>; reg-shift = <2>; interrupts = <0 36 0x04>; + nvidia,dma-request-selector = <&apbdma 8>; status = "disabled"; }; - serial@70006040 { + uartb: serial@70006040 { compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart"; reg = <0x70006040 0x40>; reg-shift = <2>; interrupts = <0 37 0x04>; + nvidia,dma-request-selector = <&apbdma 9>; status = "disabled"; }; - serial@70006200 { + uartc: serial@70006200 { compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart"; reg = <0x70006200 0x100>; reg-shift = <2>; interrupts = <0 46 0x04>; + nvidia,dma-request-selector = <&apbdma 10>; status = "disabled"; }; - serial@70006300 { + uartd: serial@70006300 { compatible = "nvidia,tegra114-uart", "nvidia,tegra20-uart"; reg = <0x70006300 0x100>; reg-shift = <2>; interrupts = <0 90 0x04>; + nvidia,dma-request-selector = <&apbdma 19>; status = "disabled"; };