From patchwork Mon Jun 25 17:22:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Radu Pirea X-Patchwork-Id: 10487073 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 641DD60230 for ; Mon, 25 Jun 2018 17:32:31 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4CAC42841D for ; Mon, 25 Jun 2018 17:32:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 410B12842E; Mon, 25 Jun 2018 17:32:31 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=unavailable version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E112F2858B for ; Mon, 25 Jun 2018 17:32:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=z1LN5b3Ht4XxWndIZHeCURUFKJg2Zabay50lnvavygE=; b=civLBCKDpwImOz Fj7AnyHB+55KIe807g88KkIsR9mKXy5QFzG/vgfzkhRvWFlFpNZLNlwcCghBd6S9OKsf0+WkMjvDl FXaQd7KzhTwzS5dlrUCVcA3QqjLgWHP6OnQESRRbv+v+gOJEqOpi2uMKqo+ZEpAEoP8hsn2rfYlVy TTF3POoj9hwVwSQba1LaOM69OwoPRblDbaCKWKcs6CQgsNT2Fr5bOwboqDRr/i3B0lKeH2QjmQdgb Rg+g/US6XD/7rr3S4ewqg6dnOfQ/KPRYUUAx7DxeqVdJ6TyaJKgFr7LmRdmd+ruUhDvKuTeE36Boj GJgmR35JmwcQZYJ94PoQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fXVLi-00007i-Dy; Mon, 25 Jun 2018 17:32:22 +0000 Received: from esa4.microchip.iphmx.com ([68.232.154.123]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fXVB8-0001f3-Uw for linux-arm-kernel@lists.infradead.org; Mon, 25 Jun 2018 17:21:34 +0000 X-IronPort-AV: E=Sophos;i="5.51,271,1526367600"; d="scan'208";a="15327078" Received: from smtpout.microchip.com (HELO email.microchip.com) ([198.175.253.82]) by esa4.microchip.iphmx.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 25 Jun 2018 10:21:15 -0700 Received: from m19893.microchip.com (10.10.76.4) by chn-sv-exch06.mchp-main.com (10.10.76.107) with Microsoft SMTP Server id 14.3.352.0; Mon, 25 Jun 2018 10:21:14 -0700 From: Radu Pirea To: , , , , , , , Subject: [PATCH v10 2/6] dt-bindings: add binding for atmel-usart in SPI mode Date: Mon, 25 Jun 2018 20:22:26 +0300 Message-ID: <20180625172230.29686-3-radu.pirea@microchip.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180625172230.29686-1-radu.pirea@microchip.com> References: <20180625172230.29686-1-radu.pirea@microchip.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180625_102127_068329_74DA91F3 X-CRM114-Status: GOOD ( 11.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-serial@vger.kernel.org, Radu Pirea , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP This patch moves the bindings for serial from serial/atmel-usart.txt to mfd/atmel-usart.txt and adds bindings for USART in SPI mode. Signed-off-by: Radu Pirea Reviewed-by: Rob Herring --- .../bindings/{serial => mfd}/atmel-usart.txt | 25 +++++++++++++++++-- include/dt-bindings/mfd/at91-usart.h | 17 +++++++++++++ 2 files changed, 40 insertions(+), 2 deletions(-) rename Documentation/devicetree/bindings/{serial => mfd}/atmel-usart.txt (76%) create mode 100644 include/dt-bindings/mfd/at91-usart.h diff --git a/Documentation/devicetree/bindings/serial/atmel-usart.txt b/Documentation/devicetree/bindings/mfd/atmel-usart.txt similarity index 76% rename from Documentation/devicetree/bindings/serial/atmel-usart.txt rename to Documentation/devicetree/bindings/mfd/atmel-usart.txt index 7c0d6b2f53e4..0348fef0f497 100644 --- a/Documentation/devicetree/bindings/serial/atmel-usart.txt +++ b/Documentation/devicetree/bindings/mfd/atmel-usart.txt @@ -1,6 +1,6 @@ * Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART) -Required properties: +Required properties for USART: - compatible: Should be "atmel,-usart" or "atmel,-dbgu" The compatible indicated will be the first SoC to support an additional mode or an USART new feature. @@ -11,7 +11,13 @@ Required properties: Required elements: "usart" - clocks: phandles to input clocks. -Optional properties: +Required properties for USART in SPI mode: +- #size-cells : Must be <0> +- #address-cells : Must be <1> +- cs-gpios: chipselects (internal cs not supported) +- atmel,usart-mode : Must be (found in dt-bindings/mfd/at91-usart.h) + +Optional properties in serial mode: - atmel,use-dma-rx: use of PDC or DMA for receiving data - atmel,use-dma-tx: use of PDC or DMA for transmitting data - {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD line respectively. @@ -62,3 +68,18 @@ Example: dma-names = "tx", "rx"; atmel,fifo-size = <32>; }; + +- SPI mode: + #include + + spi0: spi@f001c000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "atmel,at91rm9200-usart", "atmel,at91sam9260-usart"; + atmel,usart-mode = ; + reg = <0xf001c000 0x100>; + interrupts = <12 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&usart0_clk>; + clock-names = "usart"; + cs-gpios = <&pioB 3 0>; + }; diff --git a/include/dt-bindings/mfd/at91-usart.h b/include/dt-bindings/mfd/at91-usart.h new file mode 100644 index 000000000000..2de5bc312e1e --- /dev/null +++ b/include/dt-bindings/mfd/at91-usart.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides macros for AT91 USART DT bindings. + * + * Copyright (C) 2018 Microchip Technology + * + * Author: Radu Pirea + * + */ + +#ifndef __DT_BINDINGS_AT91_USART_H__ +#define __DT_BINDINGS_AT91_USART_H__ + +#define AT91_USART_MODE_SERIAL 0 +#define AT91_USART_MODE_SPI 1 + +#endif /* __DT_BINDINGS_AT91_USART_H__ */