From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934245Ab3CMTwL (ORCPT ); Wed, 13 Mar 2013 15:52:11 -0400 Received: from hqemgate04.nvidia.com ([216.228.121.35]:10343 "EHLO hqemgate04.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933288Ab3CMTwE (ORCPT ); Wed, 13 Mar 2013 15:52:04 -0400 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Wed, 13 Mar 2013 12:45:25 -0700 From: Laxman Dewangan To: CC: , , , Laxman Dewangan 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 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.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"; }; -- 1.7.1.1