From patchwork Mon May 20 10:39:26 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joseph Lo X-Patchwork-Id: 2592731 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from casper.infradead.org (casper.infradead.org [85.118.1.10]) by patchwork1.kernel.org (Postfix) with ESMTP id 4C2B13FE81 for ; Mon, 20 May 2013 13:04:03 +0000 (UTC) Received: from merlin.infradead.org ([2001:4978:20e::2]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UePku-0002FV-W9; Mon, 20 May 2013 13:04:01 +0000 Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1UeNVz-0002OT-8F; Mon, 20 May 2013 10:40:27 +0000 Received: from hqemgate03.nvidia.com ([216.228.121.140]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1UeNVh-0002LQ-L3 for linux-arm-kernel@lists.infradead.org; Mon, 20 May 2013 10:40:12 +0000 Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate03.nvidia.com id ; Mon, 20 May 2013 03:46:21 -0700 Received: from hqemhub03.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Mon, 20 May 2013 03:35:46 -0700 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Mon, 20 May 2013 03:35:46 -0700 Received: from jlo-ubuntu-64.nvidia.com (172.20.144.16) by hqemhub03.nvidia.com (172.20.150.15) with Microsoft SMTP Server (TLS) id 8.3.298.1; Mon, 20 May 2013 03:39:47 -0700 From: Joseph Lo To: Stephen Warren Subject: [PATCH V2 3/6] ARM: tegra: make tegra_resume can work for Tegra114 Date: Mon, 20 May 2013 18:39:26 +0800 Message-ID: <1369046369-12489-4-git-send-email-josephl@nvidia.com> X-Mailer: git-send-email 1.8.2.2 In-Reply-To: <1369046369-12489-1-git-send-email-josephl@nvidia.com> References: <1369046369-12489-1-git-send-email-josephl@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20130520_064010_109517_DCEB4DB5 X-CRM114-Status: UNSURE ( 8.84 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -8.0 (--------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-8.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [216.228.121.140 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -1.1 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: linux-tegra@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Joseph Lo X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Tegra114 had a newer flow controller hardware that makes its behavior and configurations are different with other Tegra series. We fix the common resume function of tegra_resume to make it can work on Tegra114 by checking SoC ID. And also checking CPU primary part number to isolate the support code for Cortex A9 and A15. Signed-off-by: Joseph Lo --- V2: * update the commit message * update the comment message for the CSR flags --- arch/arm/mach-tegra/reset-handler.S | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/arm/mach-tegra/reset-handler.S b/arch/arm/mach-tegra/reset-handler.S index 40af405..424e01f 100644 --- a/arch/arm/mach-tegra/reset-handler.S +++ b/arch/arm/mach-tegra/reset-handler.S @@ -47,23 +47,27 @@ ENTRY(tegra_resume) THUMB( it ne ) bne cpu_resume @ no -#ifdef CONFIG_ARCH_TEGRA_3x_SOC +#ifndef CONFIG_ARCH_TEGRA_2x_SOC /* Are we on Tegra20? */ tegra_get_soc_id TEGRA_APB_MISC_BASE, r6 cmp r6, #TEGRA20 beq 1f @ Yes /* Clear the flow controller flags for this CPU. */ - mov32 r2, TEGRA_FLOW_CTRL_BASE + FLOW_CTRL_CPU0_CSR @ CPU0 CSR - ldr r1, [r2] + cpu_to_csr_req r1, r0 + mov32 r2, TEGRA_FLOW_CTRL_BASE + ldr r1, [r2, r1] /* Clear event & intr flag */ orr r1, r1, \ #FLOW_CTRL_CSR_INTR_FLAG | FLOW_CTRL_CSR_EVENT_FLAG - movw r0, #0x0FFD @ enable, cluster_switch, immed, & bitmaps + movw r0, #0x3FFD @ enable, cluster_switch, immed, bitmaps + @ & ext flags for CPU power mgnt bic r1, r1, r0 str r1, [r2] 1: #endif + check_cpu_part_num 0xc09, r8, r9 + bne not_ca9 #ifdef CONFIG_HAVE_ARM_SCU /* enable SCU */ mov32 r0, TEGRA_ARM_PERIF_BASE @@ -74,6 +78,7 @@ ENTRY(tegra_resume) /* L2 cache resume & re-enable */ l2_cache_resume r0, r1, r2, l2x0_saved_regs_addr +not_ca9: b cpu_resume ENDPROC(tegra_resume)