From patchwork Fri May 23 07:51:06 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 4228651 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 [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 5AD2CBF90B for ; Fri, 23 May 2014 08:01:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 7FE0E20398 for ; Fri, 23 May 2014 08:01:25 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id AEC4D2037E for ; Fri, 23 May 2014 08:01:24 +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 1WnkNX-0006Bf-73; Fri, 23 May 2014 07:58:59 +0000 Received: from merlin.infradead.org ([2001:4978:20e::2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WnkHT-0000RO-Np for linux-arm-kernel@bombadil.infradead.org; Fri, 23 May 2014 07:52:43 +0000 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]) by merlin.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WnkHK-0002o6-Ts for linux-arm-kernel@lists.infradead.org; Fri, 23 May 2014 07:52:42 +0000 Received: from wens by mirror2.csie.ntu.edu.tw with local (Exim 4.82) (envelope-from ) id 1WnkGU-0007S3-EL; Fri, 23 May 2014 15:51:42 +0800 From: Chen-Yu Tsai To: Greg Kroah-Hartman , Samuel Ortiz , Lee Jones , Maxime Ripard , Rob Herring , Mike Turquette , Emilio Lopez , Linus Walleij Subject: [PATCH 03/22] clk: sunxi: add "pll6" to sun6i protected clock list Date: Fri, 23 May 2014 15:51:06 +0800 Message-Id: <1400831485-28576-4-git-send-email-wens@csie.org> X-Mailer: git-send-email 2.0.0.rc2 In-Reply-To: <1400831485-28576-1-git-send-email-wens@csie.org> References: <1400831485-28576-1-git-send-email-wens@csie.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20140523_035235_327003_7573FC28 X-CRM114-Status: UNSURE ( 8.86 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -2.6 (--) Cc: devicetree@vger.kernel.org, Boris BREZILLON , Luc Verhaegen , linux-kernel@vger.kernel.org, Hans de Goede , Chen-Yu Tsai , linux-serial@vger.kernel.org, linux-arm-kernel@lists.infradead.org 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-2.5 required=5.0 tests=BAYES_00,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 PLL6 is used by some important but undocumented module, most likely memory related, such as mbus or the actual memory controller. As we do not have a driver for that, add pll6 to the list of protected clocks, so that it won't be disabled and leave us with a non-responsive system. Signed-off-by: Chen-Yu Tsai --- drivers/clk/sunxi/clk-sunxi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/sunxi/clk-sunxi.c b/drivers/clk/sunxi/clk-sunxi.c index e0e24d5..3e33bc1 100644 --- a/drivers/clk/sunxi/clk-sunxi.c +++ b/drivers/clk/sunxi/clk-sunxi.c @@ -1229,6 +1229,7 @@ CLK_OF_DECLARE(sun7i_a20_clk_init, "allwinner,sun7i-a20", sun5i_init_clocks); static const char *sun6i_critical_clocks[] __initdata = { "cpu", + "pll6", /* something we don't know about uses pll6 */ "ahb1_sdram", };