From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B805C00140 for ; Mon, 8 Aug 2022 09:01:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236621AbiHHJBj (ORCPT ); Mon, 8 Aug 2022 05:01:39 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44344 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234370AbiHHJBf (ORCPT ); Mon, 8 Aug 2022 05:01:35 -0400 Received: from mail-lf1-x12f.google.com (mail-lf1-x12f.google.com [IPv6:2a00:1450:4864:20::12f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9A54A11C26 for ; Mon, 8 Aug 2022 02:01:32 -0700 (PDT) Received: by mail-lf1-x12f.google.com with SMTP id z6so4254175lfu.9 for ; Mon, 08 Aug 2022 02:01:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=message-id:date:mime-version:user-agent:subject:content-language:to :cc:references:from:in-reply-to:content-transfer-encoding; bh=tAR6MlMDHmDQO73lbvVKnLotbZsWUuiG6QGGNmumCB8=; b=gWVR2Kps4D8nn0alN5B/hZGj94MWs7kU7Gwqnnl2BvuVMokaEcekKRrxTI5hOCdM7K PhgHi4f15Zc1B7KE8+KVwzj6YPXUPs4qDSzBYRNmcEhc0d1FG3Ay90Dh3A6U70M/4mm2 SP3fmkuUL1t/hD4oHqurrdKK+bN3wDgIx7b7HS0vy+/Hpo95vdj6sK6rey97Jf022eDq wol4+vnqdptvdGx0D4jEZTmFdLSe5VPfWINbZAAa7nM/tLL6+tXSQocSdFli84RofZ5j LZM5IefgJuEsPr7IG3MV+NXR8Artn3/kDPgFGBKdpu6BWQeBB/v9MbPySJctKuwK2Dp+ tRcA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=tAR6MlMDHmDQO73lbvVKnLotbZsWUuiG6QGGNmumCB8=; b=3rZMpsP64MENaTmEPs3ChK65z8MQxK1YYKmxMNckt6Ga+cBah8y2lsRLYaeMQq+Tyb F9fQMwyfBKQi4ugFQKs1RXJ8kCk/EE2+9w2Q/DXNb2FYuWr7q5FrI9oWmb4srMv2q54O w9IOFKEjS974Wn/C1MQAMvUSnGi34ougL7Y4gNpsY8arMysUUoNfarnI9+zFU3+N5mtc pfzjC9Sch6NhWKnHVO052hoeG6wM/If3YYhivF20eULCMvy494jZFirvaMzkdFhH6piL 0l7Edqxi/Yi1WbVegVseHkKaAW/baxB6TixpmFBFIr38OZ2Q9c4u8rBFq4yxbCCpD/PC l6RQ== X-Gm-Message-State: ACgBeo0lIukBBq/vWzE06HEgATWYOzqvDgfM72cVCN8VixOaTdpowi2v reGnxM8C/fm92BASEcth39LKxA== X-Google-Smtp-Source: AA6agR6JGWYSid7rm3XtqM4yDPbb3OxW1R/HkQ9bGdK161ybakPEk9MBDB6c00tdGP8rOZd5G05GEA== X-Received: by 2002:a05:6512:2201:b0:48a:7440:aaf6 with SMTP id h1-20020a056512220100b0048a7440aaf6mr6169290lfu.472.1659949290876; Mon, 08 Aug 2022 02:01:30 -0700 (PDT) Received: from [192.168.1.39] ([83.146.140.105]) by smtp.gmail.com with ESMTPSA id 201-20020a2e09d2000000b0025e5fd96bf6sm1281379ljj.15.2022.08.08.02.01.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 08 Aug 2022 02:01:30 -0700 (PDT) Message-ID: <9ad4b4a8-988e-f185-f80c-6f15f341ce8c@linaro.org> Date: Mon, 8 Aug 2022 12:01:28 +0300 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.12.0 Subject: Re: [PATCH 1/3] dt-bindings: spi: stm32: Add st,dual-flash property in st,stm32-qspi.yaml Content-Language: en-US To: patrice.chotard@foss.st.com, Mark Brown , Alexandre Torgue , robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org Cc: linux-spi@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, christophe.kerello@foss.st.com, devicetree@vger.kernel.org References: <20220808074051.44736-1-patrice.chotard@foss.st.com> <20220808074051.44736-2-patrice.chotard@foss.st.com> From: Krzysztof Kozlowski In-Reply-To: <20220808074051.44736-2-patrice.chotard@foss.st.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On 08/08/2022 10:40, patrice.chotard@foss.st.com wrote: > From: Patrice Chotard > > Add new property st,dual-flash which allows to use the QSPI interface as a > communication channel using up to 8 qspi line. > This mode can only be used if cs-gpios property is defined. > > Signed-off-by: Patrice Chotard > --- > Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml | 8 ++++++++ > 1 file changed, 8 insertions(+) > > diff --git a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml > index 6ec6f556182f..5e4f9109799e 100644 > --- a/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml > +++ b/Documentation/devicetree/bindings/spi/st,stm32-qspi.yaml > @@ -46,6 +46,14 @@ properties: > - const: tx > - const: rx > > + st,dual-flash: > + type: boolean > + description: > + Allows to use 8 data lines in case cs-gpios property is defined. It's named dual-flash, but what if you want to use QSPI to connect for example to FPGA? Also how is this related to parallel-memories property? Best regards, Krzysztof