From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756864Ab3A2M7H (ORCPT ); Tue, 29 Jan 2013 07:59:07 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:11062 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756745Ab3A2M65 (ORCPT ); Tue, 29 Jan 2013 07:58:57 -0500 X-PGP-Universal: processed; by hqnvupgp06.nvidia.com on Tue, 29 Jan 2013 04:56:46 -0800 From: Laxman Dewangan To: CC: , , , , Laxman Dewangan Subject: [PATCH 6/7] ARM: DT: tegra114:add aliases and DMA requestor for serial controller Date: Tue, 29 Jan 2013 18:26:22 +0530 Message-ID: <1359464183-6255-7-git-send-email-ldewangan@nvidia.com> X-Mailer: git-send-email 1.7.1.1 In-Reply-To: <1359464183-6255-1-git-send-email-ldewangan@nvidia.com> References: <1359464183-6255-1-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,tegra20-uart and APB DMA based driver will get enabled with compatible nvidia,tegra30-hsuart. Signed-off-by: Laxman Dewangan --- 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 74d18b2..17fd061 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>; @@ -97,35 +104,47 @@ 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,tegra30-uart", "nvidia,tegra20-uart" and to enable + * the APB DMA based serial driver, the comptible is + * "nvidia,tegra30-hsuart", "nvidia,tegra20-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