From patchwork Sun Oct 7 01:53:04 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Domenico Andreoli X-Patchwork-Id: 1560231 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id C53F940D2D for ; Sun, 7 Oct 2012 01:56:51 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TKg4z-0007kg-TM; Sun, 07 Oct 2012 01:54:53 +0000 Received: from mail-wi0-f171.google.com ([209.85.212.171]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TKg4L-0007el-V8 for linux-arm-kernel@lists.infradead.org; Sun, 07 Oct 2012 01:54:18 +0000 Received: by mail-wi0-f171.google.com with SMTP id hj13so1767679wib.0 for ; Sat, 06 Oct 2012 18:54:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=sender:message-id:user-agent:date:from:to:cc:subject:references :content-disposition; bh=70syHnGHbx/XoculPu5lM6CuGJi783xD0GDqYpU90pw=; b=TvOZef8eQilK3Mm7N1EgSVyw5qparkxBnXNbBqrntD3Y4Z/7eu0LxrqX//8Ghue4u6 sdOcOwx3PeYhhqw8qmiFY7nqXBxO3M0hUZt+PqjH6iqoZuerXXexiOUvUZKKFeC7Af7m EZkO1F/pW2bPWvI2yjm58wLo7nCvHqhJ8nWByJEfN/AMdjpgWJMLuorPArKgdCQHpYaN C9HmwHBhobefEgLWH/+MjoI2PRexUocsGroIMiUBfashBHEp8NJoucgcAsXGs9JNMyII gZNw2SMovx50uWOEcNCCn0GURmYdoGxKLQ1YMcF3YPUOq9yTBs7UmJxMDuCWJgUuT349 vxKQ== Received: by 10.180.86.202 with SMTP id r10mr12082749wiz.12.1349574849565; Sat, 06 Oct 2012 18:54:09 -0700 (PDT) Received: from raptus.dandreoli.com (178-85-163-250.dynamic.upc.nl. [178.85.163.250]) by mx.google.com with ESMTPS id dm3sm12732980wib.3.2012.10.06.18.54.07 (version=TLSv1/SSLv3 cipher=OTHER); Sat, 06 Oct 2012 18:54:08 -0700 (PDT) Received: by raptus.dandreoli.com (Postfix, from userid 1000) id 7975B3AB0D; Sun, 7 Oct 2012 03:54:07 +0200 (CEST) Message-Id: <20121007015407.154476821@gmail.com> User-Agent: quilt/0.60-1 Date: Sun, 07 Oct 2012 03:53:04 +0200 From: Domenico Andreoli To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 4/6] ARM: bcm476x: Add stub clock driver References: <20121007015300.828366635@gmail.com> Content-Disposition: inline; filename=arm-bcm476x-add-stub-clock-driver.patch X-Spam-Note: CRM114 invocation failed X-Spam-Score: -2.7 (--) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-2.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [209.85.212.171 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (cavokz[at]gmail.com) -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature Cc: Domenico Andreoli , devicetree-discuss@lists.ozlabs.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org From: Domenico Andreoli This is the minimal clock support required for the boot, a more complete implementation will follow (shortly). Signed-off-by: Domenico Andreoli --- arch/arm/mach-bcm476x/bcm476x.c | 3 ++ drivers/clk/Makefile | 1 + drivers/clk/clk-bcm476x.c | 52 ++++++++++++++++++++++++++++++++++++++++ include/linux/clk/bcm476x.h | 22 +++++++++++++++++ 4 files changed, 78 insertions(+) create mode 100644 drivers/clk/clk-bcm476x.c create mode 100644 include/linux/clk/bcm476x.h Index: b/arch/arm/mach-bcm476x/bcm476x.c =================================================================== --- a/arch/arm/mach-bcm476x/bcm476x.c +++ b/arch/arm/mach-bcm476x/bcm476x.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include @@ -43,6 +44,8 @@ void __init bcm476x_init(void) { int ret; + bcm476x_init_clocks(); + ret = of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); if (ret) { pr_err("of_platform_populate failed: %d\n", ret); Index: b/drivers/clk/Makefile =================================================================== --- a/drivers/clk/Makefile +++ b/drivers/clk/Makefile @@ -5,6 +5,7 @@ obj-$(CONFIG_COMMON_CLK) += clk.o clk-fi clk-mux.o clk-divider.o clk-fixed-factor.o # SoCs specific obj-$(CONFIG_ARCH_BCM2835) += clk-bcm2835.o +obj-$(CONFIG_ARCH_BCM476X) += clk-bcm476x.o obj-$(CONFIG_ARCH_NOMADIK) += clk-nomadik.o obj-$(CONFIG_ARCH_HIGHBANK) += clk-highbank.o obj-$(CONFIG_ARCH_MXS) += mxs/ Index: b/drivers/clk/clk-bcm476x.c =================================================================== --- /dev/null +++ b/drivers/clk/clk-bcm476x.c @@ -0,0 +1,52 @@ +/* + * Broadcom BCM476x SoCs clocks + * + * Copyright (C) 2011-2012 Domenico Andreoli + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include +#include +#include +#include +#include + +/* + * These are fixed clocks (and device tree doesn't support clk!). + * + * They're probably not all root clocks and it may be possible to + * turn them on and off but until this is mapped out better it's + * the only way they can be used. + */ +DEFINE_CLK_FIXED_RATE(sys_pclk, CLK_IS_ROOT, 312000000, 0); +DEFINE_CLK_FIXED_RATE(apb_pclk, CLK_IS_ROOT, 156000000, 0); +DEFINE_CLK_FIXED_RATE(uart0_pclk, CLK_IS_ROOT, 78000000, 0); +DEFINE_CLK_FIXED_RATE(uart1_pclk, CLK_IS_ROOT, 78000000, 0); +DEFINE_CLK_FIXED_RATE(uart2_pclk, CLK_IS_ROOT, 78000000, 0); + +static struct clk_lookup lookups[] = { + { .con_id = "sys_pclk", .clk = &sys_pclk }, + { .con_id = "apb_pclk", .clk = &apb_pclk }, + { .dev_id = "c0000.uart0", .clk = &uart0_pclk }, + { .dev_id = "c1000.uart1", .clk = &uart1_pclk }, + { .dev_id = "b2000.uart2", .clk = &uart2_pclk }, +}; + +void __init bcm476x_init_clocks(void) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(lookups); i++) { + __clk_init(NULL, lookups[i].clk); + clkdev_add(&lookups[i]); + } +} Index: b/include/linux/clk/bcm476x.h =================================================================== --- /dev/null +++ b/include/linux/clk/bcm476x.h @@ -0,0 +1,22 @@ +/* + * Broadcom BCM476x SoCs clocks + * + * Copyright (C) 2011-2012 Domenico Andreoli + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_CLK_BCM476X_H_ +#define __LINUX_CLK_BCM476X_H_ + +void __init bcm476x_init_clocks(void); + +#endif