From patchwork Fri Jun 6 00:15:42 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Hilman X-Patchwork-Id: 4309271 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id BCB0FBEEAA for ; Fri, 6 Jun 2014 00:15:48 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 016A020222 for ; Fri, 6 Jun 2014 00:15:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DA2D1201F7 for ; Fri, 6 Jun 2014 00:15:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751409AbaFFAPp (ORCPT ); Thu, 5 Jun 2014 20:15:45 -0400 Received: from mail-pb0-f50.google.com ([209.85.160.50]:41586 "EHLO mail-pb0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751384AbaFFAPp (ORCPT ); Thu, 5 Jun 2014 20:15:45 -0400 Received: by mail-pb0-f50.google.com with SMTP id ma3so1819592pbc.23 for ; Thu, 05 Jun 2014 17:15:45 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:user-agent :mime-version:content-type; bh=dyLnEyqG5IIFVZFyL/mTm+Wn/KAQPqiLsWC51jjVsio=; b=BT46lhr6hFhf+Yu9FUVb2yZ+wkHsuWVKiF05QPX1tDNH4yNkded9+Y1YYtzZXR5Ll7 DNt9TadNMMwK++IO8nsFBb4MesbFpFHXwk+TRpeuO0YoJosu7z5Zn0rvV1wljh6swzp7 zf9SXiKWeu8xg8FP4TX2+eB5b4w7Gy49/4oUVUVCfurVt9bMIW+TssrFkdtqEs3Gg7QX WN/cAzL4UT/dVCtBVhv7loi1fMS0ptXQDS/TiEPvR5xfn6Oawi2TuYXDz9UVrI0dVEiW Mf/cPUqJVGKwlGpEXkBbku5NwaOYXseZ9prbjcsnNKIqSypwYB753OxcBss3moy0Qt/F 05Zg== X-Gm-Message-State: ALoCoQm997S1L52+4OeQVt8xmcnhJT2F9IhDDwvFYGR0uVcHuZNXPtqsMuAPhMCbri9LnzXmRrRk X-Received: by 10.68.133.163 with SMTP id pd3mr1998778pbb.166.1402013744970; Thu, 05 Jun 2014 17:15:44 -0700 (PDT) Received: from localhost (c-67-183-17-239.hsd1.wa.comcast.net. [67.183.17.239]) by mx.google.com with ESMTPSA id fx5sm28125274pbb.62.2014.06.05.17.15.43 for (version=TLSv1.2 cipher=RC4-SHA bits=128/128); Thu, 05 Jun 2014 17:15:44 -0700 (PDT) From: Kevin Hilman To: linux-samsung-soc@vger.kernel.org Cc: linux-arm-kernel , dianders@google.com, Olof Johansson , "Turquette\, Mike" , javier.martinez@collabora.co.uk Subject: exynos5420-peach-pi: linux-next boot fails unless mau_epll left enabled? Date: Thu, 05 Jun 2014 17:15:42 -0700 Message-ID: <7hoay6sxjl.fsf@paris.lan> User-Agent: Gnus/5.130008 (Ma Gnus v0.8) Emacs/24.3 (gnu/linux) MIME-Version: 1.0 Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-7.5 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham 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 Hello, I'm trying to boot next-20140605[1] on my recently arrived Chromebook2 (peach-pi) and was not getting to userspace. Comparing notes with Doug Anderson, his was booting just fine, so after some debugging and adding 'clk_ignore_unused' to the command-line, it started booting fine. So then, I tracked it down to which clock was causing the problems and found that it's the mau_epll clock gating that's causing the problem, and leaving it enabled[1] allows me to boot again. Any ideas what's going on here? And in particular, any ideas why it would affect my board and not other boards like Doug's? Thanks, Kevin [1] Using this defconfig: https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/master/eclass/cros-kernel/exynos5_defconfig [2] GATE(CLK_SCLK_UART0, "sclk_uart0", "dout_uart0", --- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c index 61eccf0dd72f..ed175088ee7e 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -911,7 +911,7 @@ static struct samsung_gate_clock exynos5x_gate_clks[] __initdata = { SRC_MASK_TOP2, 24, 0, 0), GATE(CLK_MAU_EPLL, "mau_epll", "mout_mau_epll_clk", - SRC_MASK_TOP7, 20, 0, 0), + SRC_MASK_TOP7, 20, CLK_IGNORE_UNUSED, 0), /* sclk */