From patchwork Thu Sep 13 23:31:27 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Hunter, Jon" X-Patchwork-Id: 1454821 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (unknown [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 0C8B04025E for ; Thu, 13 Sep 2012 23:48:01 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TCItC-0002eN-Fu; Thu, 13 Sep 2012 23:32:06 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TCIsv-0002bO-IW for linux-arm-kernel@lists.infradead.org; Thu, 13 Sep 2012 23:31:50 +0000 Received: from dlelxv30.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id q8DNVmfU000829; Thu, 13 Sep 2012 18:31:48 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv30.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8DNVm6T002992; Thu, 13 Sep 2012 18:31:48 -0500 Received: from dlelxv24.itg.ti.com (172.17.1.199) by dfle73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.1.323.3; Thu, 13 Sep 2012 18:31:48 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlelxv24.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8DNVmiG023519; Thu, 13 Sep 2012 18:31:48 -0500 Received: from localhost (ula0741266.am.dhcp.ti.com [192.157.144.139]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id q8DNVlw08230; Thu, 13 Sep 2012 18:31:47 -0500 (CDT) From: Jon Hunter To: Benoit Cousson , Tony Lindgren , Paul Walmsley , Rob Herring , Grant Likely Subject: [PATCH V2 3/7] ARM: OMAP4: Add timer clock aliases for device-tree Date: Thu, 13 Sep 2012 18:31:27 -0500 Message-ID: <1347579091-3794-4-git-send-email-jon-hunter@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1347579091-3794-1-git-send-email-jon-hunter@ti.com> References: <1347579091-3794-1-git-send-email-jon-hunter@ti.com> MIME-Version: 1.0 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -7.4 (-------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-7.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [198.47.26.153 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: device-tree , linux-omap , Jon Hunter , linux-arm 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: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org For OMAP4, the dmtimers are located in the Wake-up, ABE and Peripheral (PER) power domains. Hence, when the dmtimer is configured to use the "timer_sys_ck" as its functional clock the actual clock used is different depending on whether the clock is in the Wake-up, ABE or PER domain. So when we look-up the dmtimer's "timer_sys_ck" we need to specify the timer device name as well as clock alias to find the right clock. Currently, the device names for the timers have the format "omap_timer.X" where X is the timer instance number. When using to device tree, the format of the device name created by device-tree is different and has the format "." (this is assuming that the device-tree "reg" property is specified). This causes the look-up for the OMAP4 "timer_sys_ck" to fail. To fix this add new timer clock alias for using device-tree. Please note that adding a 2nd set of clock aliases for the same clocks to only temporary until device-tree migration is complete. Then we can remove the legacy aliases. Hence, I have marked the legacy aliases with a "TODO" to remove them. Signed-off-by: Jon Hunter --- arch/arm/mach-omap2/clock44xx_data.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/mach-omap2/clock44xx_data.c b/arch/arm/mach-omap2/clock44xx_data.c index d7f55e4..7dfeaf0 100644 --- a/arch/arm/mach-omap2/clock44xx_data.c +++ b/arch/arm/mach-omap2/clock44xx_data.c @@ -3314,6 +3314,7 @@ static struct omap_clk omap44xx_clks[] = { CLK("usbhs_omap", "usbtll_fck", &dummy_ck, CK_443X), CLK("omap_wdt", "ick", &dummy_ck, CK_443X), CLK(NULL, "timer_32k_ck", &sys_32k_ck, CK_443X), + /* TODO: Remove "omap_timer.X" aliases once DT migration is complete */ CLK("omap_timer.1", "timer_sys_ck", &sys_clkin_ck, CK_443X), CLK("omap_timer.2", "timer_sys_ck", &sys_clkin_ck, CK_443X), CLK("omap_timer.3", "timer_sys_ck", &sys_clkin_ck, CK_443X), @@ -3325,6 +3326,17 @@ static struct omap_clk omap44xx_clks[] = { CLK("omap_timer.6", "timer_sys_ck", &syc_clk_div_ck, CK_443X), CLK("omap_timer.7", "timer_sys_ck", &syc_clk_div_ck, CK_443X), CLK("omap_timer.8", "timer_sys_ck", &syc_clk_div_ck, CK_443X), + CLK("4a318000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("48032000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("48034000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("48036000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("4803e000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("48086000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("48088000.timer", "timer_sys_ck", &sys_clkin_ck, CK_443X), + CLK("49038000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), + CLK("4903a000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), + CLK("4903c000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), + CLK("4903e000.timer", "timer_sys_ck", &syc_clk_div_ck, CK_443X), }; int __init omap4xxx_clk_init(void)