From patchwork Mon Oct 5 23:28:22 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Suman Anna X-Patchwork-Id: 7332261 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id EF01ABEEA4 for ; Mon, 5 Oct 2015 23:31:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 0427B20634 for ; Mon, 5 Oct 2015 23:31:31 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 2CAFD20622 for ; Mon, 5 Oct 2015 23:31:30 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZjFC1-0005MV-Ec; Mon, 05 Oct 2015 23:29:17 +0000 Received: from devils.ext.ti.com ([198.47.26.153]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZjFBb-0005AV-LV for linux-arm-kernel@lists.infradead.org; Mon, 05 Oct 2015 23:28:53 +0000 Received: from dlelxv90.itg.ti.com ([172.17.2.17]) by devils.ext.ti.com (8.13.7/8.13.7) with ESMTP id t95NSQi1014728; Mon, 5 Oct 2015 18:28:26 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dlelxv90.itg.ti.com (8.14.3/8.13.8) with ESMTP id t95NSQj7028125; Mon, 5 Oct 2015 18:28:26 -0500 Received: from dlep32.itg.ti.com (157.170.170.100) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.224.2; Mon, 5 Oct 2015 18:28:26 -0500 Received: from legion.dal.design.ti.com (legion.dal.design.ti.com [128.247.22.53]) by dlep32.itg.ti.com (8.14.3/8.13.8) with ESMTP id t95NSP9j009884; Mon, 5 Oct 2015 18:28:25 -0500 Received: from localhost (irmo.am.dhcp.ti.com [128.247.9.166]) by legion.dal.design.ti.com (8.11.7p1+Sun/8.11.7) with ESMTP id t95NSP908799; Mon, 5 Oct 2015 18:28:25 -0500 (CDT) From: Suman Anna To: Tony Lindgren Subject: [PATCH v2 2/4] ARM: OMAP2+: timer: Remove secure timer for DRA7xx HS devices Date: Mon, 5 Oct 2015 18:28:22 -0500 Message-ID: <1444087704-1429-3-git-send-email-s-anna@ti.com> X-Mailer: git-send-email 2.6.0 In-Reply-To: <1444087704-1429-1-git-send-email-s-anna@ti.com> References: <1444087704-1429-1-git-send-email-s-anna@ti.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151005_162851_873421_31CD39FF X-CRM114-Status: GOOD ( 12.49 ) X-Spam-Score: -6.9 (------) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Paul Walmsley , linux-omap@vger.kernel.org, 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-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Timer 12 on DRA7 SoCs is reserved for secure usage on high-secure (HS) devices. The timer cannot be used by the kernel on HS devices, but is available on regular general purpose (GP) devices. This is similar to the behavior on OMAP3 devices, so extend the logic used in commit ad24bde8f102 ("ARM: OMAP3: Dynamically disable secure timer nodes for secure devices") to remove the secure timer on DRA7xx SoCs at run-time based on the SoC device type. Signed-off-by: Suman Anna --- arch/arm/mach-omap2/timer.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/mach-omap2/timer.c b/arch/arm/mach-omap2/timer.c index a55655127ef2..1e346aa0a687 100644 --- a/arch/arm/mach-omap2/timer.c +++ b/arch/arm/mach-omap2/timer.c @@ -193,8 +193,8 @@ static struct device_node * __init omap_get_timer_dt(const struct of_device_id * /** * omap_dmtimer_init - initialisation function when device tree is used * - * For secure OMAP3 devices, timers with device type "timer-secure" cannot - * be used by the kernel as they are reserved. Therefore, to prevent the + * For secure OMAP3/DRA7xx devices, timers with device type "timer-secure" + * cannot be used by the kernel as they are reserved. Therefore, to prevent the * kernel registering these devices remove them dynamically from the device * tree on boot. */ @@ -202,7 +202,7 @@ static void __init omap_dmtimer_init(void) { struct device_node *np; - if (!cpu_is_omap34xx()) + if (!cpu_is_omap34xx() && !soc_is_dra7xx()) return; /* If we are a secure device, remove any secure timer nodes */