From patchwork Thu Feb 6 15:06:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chuanhong Guo X-Patchwork-Id: 11368649 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8DE96924 for ; Thu, 6 Feb 2020 15:06:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 68F44217BA for ; Thu, 6 Feb 2020 15:06:40 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="UigLDjPk" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727481AbgBFPGk (ORCPT ); Thu, 6 Feb 2020 10:06:40 -0500 Received: from mail-pg1-f193.google.com ([209.85.215.193]:35699 "EHLO mail-pg1-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727379AbgBFPGj (ORCPT ); Thu, 6 Feb 2020 10:06:39 -0500 Received: by mail-pg1-f193.google.com with SMTP id l24so2893974pgk.2; Thu, 06 Feb 2020 07:06:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=UZFkCGZVwQwduBtZ/3jHg/ruPMYP9eMWaKEsW4KMUwM=; b=UigLDjPkKII20d9oN18ihCRA+NuoxXY3ObqaZ3RjhodSH0/6ueflU0o61aPlfgCwIh KglkR2y2S/Jx8gTz7VHx0B/3vQMbZ61/yPmmNFGOLO6zJediuida0L5lvNLgQyn+7aqJ HfqZs3VpeTq1FRz5YjYJwIRf1za1q5C8cSzCHWnMdR0NxdbjbNuxiny+ZK9obbGHVBgV OEYJB8WYCqHm2zG7aCcKjxGLHc2SHP1NPlncruJd/Ly3NPUXanWA7cmQq0CRtMU5yvup Lyt49IGP7x7afuVLBE+PIWcT8IfXv0rSwioT0FBXNJFzbgKjPhYiMFjit3U2I6yn87St ZFTw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=UZFkCGZVwQwduBtZ/3jHg/ruPMYP9eMWaKEsW4KMUwM=; b=MJeRrkTO9rifDIWhjHe6jgNSkYa28CedvSf5fYEZ77z+hlK/I8NgtsJxr3T0ulnV4h XpLryuwMFnheWKny52OrwCEw63QHkiwSDuAqzwgzsUGO4JX/DhkvgT2J3wpMVCKrN1HZ DkGbZP/o67Jn0g5KsgbKWbhFV5wcNjnijfRvetnhHFr2xPzwDzlhr6FgIExBfR9dqqBB Ziq0c+DVi7SGOXF2gPbChIc9d7TXB5Fb8z6BiKc6jmvldSTVQIsOgwFDkcWw2Q2ZQ08O 5+9BTa4Qye+EEH5z/9LHbVYqEkaOjY9PRMg5ZZsX8C3UYJvMBVNBGIYDWKynbk9rorl5 NyPA== X-Gm-Message-State: APjAAAX+ewA7uJvOqQ7pRd+2to1Vsya68uWhat7KzAoxJmpccKCPVJ2x W3hS7rgN7/B8b1QYkLkz3i4oMdiCc54= X-Google-Smtp-Source: APXvYqyL2WFmNAXlCFyO7pKJgnGP32rmFdvVLLTr21oEjc7gLrKgr9uC/DhbXqHRZ5LRPK397UR/Ow== X-Received: by 2002:a63:778c:: with SMTP id s134mr3964066pgc.451.1581001598790; Thu, 06 Feb 2020 07:06:38 -0800 (PST) Received: from localhost.localdomain ([2001:19f0:7001:2668:5400:1ff:fe62:2bbd]) by smtp.gmail.com with ESMTPSA id 64sm3748157pfd.48.2020.02.06.07.06.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Feb 2020 07:06:38 -0800 (PST) From: Chuanhong Guo To: linux-spi@vger.kernel.org Cc: Mark Brown , linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland , devicetree@vger.kernel.org, Chuanhong Guo Subject: [PATCH v2 0/2] spi: add driver for ar934x spi controller Date: Thu, 6 Feb 2020 23:06:24 +0800 Message-Id: <20200206150626.708649-1-gch981213@gmail.com> X-Mailer: git-send-email 2.24.1 MIME-Version: 1.0 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This controller is a superset of the already supported qca,ar7100-spi. Besides the bit-bang mode in spi-ath79.c, this new controller added a new "shift register" mode, allowing faster spi operations. This mode doesn't need all the bit-bang code in spi-ath79.c and needs a different clock setup, so I decided to write a new driver for it instead of extending current spi-ath79 driver. Changes since v1: 1. change comment at the beginning to C++ style 2. rename ar934x_spi_transfer_one to ar934x_spi_transfer_one_message Chuanhong Guo (2): spi: add driver for ar934x spi controller dt-binding: spi: add bindings for spi-ar934x .../bindings/spi/qca,ar934x-spi.yaml | 40 +++ drivers/spi/Kconfig | 7 + drivers/spi/Makefile | 1 + drivers/spi/spi-ar934x.c | 229 ++++++++++++++++++ 4 files changed, 277 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/qca,ar934x-spi.yaml create mode 100644 drivers/spi/spi-ar934x.c