From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C68EC48BC2 for ; Wed, 23 Jun 2021 21:02:40 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F1BA5610C7 for ; Wed, 23 Jun 2021 21:02:39 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F1BA5610C7 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=libero.it Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=9Okl75VlVoKTCuAXLyzJHj0JNO7bWKwBuD9VrAXEXnQ=; b=V/FOhdnGF+vj9B QHbsmMOCMPztC0jGGJSpChPzvPltLZWEE0ATejLkb79d9Rlea0A4EXEgWJ+T724map0rDocfrtCwY mGtxH9l1Xw3Q0/fn1VtJPCKIEmSUl0RHFsxZPrh1S1hPD02EcTte4ssmonHPmeg24LgB8Kmy3hcwW +V9WoKdru/NHOOP/WPrr8gwQYVHGdsHdsb4rV2pvIDjjyoq6lRuzuJuh+oGxOauSg2GvSjw5E8zdd 0bgKA+w4ozhyxYPR7k1Dp8cAr0Idziy7S5UQpwL9j++8h5GMR9Ff+ZBdZx7kNIdfeNtg1lCrOXKQA lWhPpsXbdnV0mPXxs4AA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lw9zT-00Bx1W-Ey; Wed, 23 Jun 2021 21:00:55 +0000 Received: from smtp-35.italiaonline.it ([213.209.10.35] helo=libero.it) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lw9zP-00Bx0U-E8 for linux-arm-kernel@lists.infradead.org; Wed, 23 Jun 2021 21:00:53 +0000 Received: from passgat-Modern-14-A10M.homenet.telecomitalia.it ([79.17.119.101]) by smtp-35.iol.local with ESMTPA id w9zGldO2dsptiw9zLlZNPm; Wed, 23 Jun 2021 23:00:48 +0200 x-libjamoibt: 1601 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=libero.it; s=s2021; t=1624482048; bh=ZGSmRoFXZ8qDZOFZuNx5T8XiAvYHeA24TOLTUmvi9KA=; h=From; b=HlnrKS8OR53BTgQ5RXUOwsEtbEV3TtqKRZE2MV9zqLj9XT8XTytclCsiaaKa9Lq70 h/AODGpbK9/dglndo8D2Sxpw1egroGspjPC+nI79V2QE1xOzX/zzcvz+PqabAGgbXd jHC1o2kS5I79IOx9KWwOltMR7hEkOaJzw3l6QibYD5UJUGtqYil5qQ5eKPAeYFKNQN I9B8qZH0jrCiw/whneto7GRtKToOnCob151aZhzWO6dtmnr01BewF7zazJi2BsWIOm b3xCSngHLZUEO9XH3tnixafQlDNs8V/aWxaBDfITLQgOcp/f3c1uMdt7DArLrLSRGe yk6FIC6AqdMsA== X-CNFS-Analysis: v=2.4 cv=Bo1Yfab5 c=1 sm=1 tr=0 ts=60d3a100 cx=a_exe a=do1bHx4A/kh2kuTIUQHSxQ==:117 a=do1bHx4A/kh2kuTIUQHSxQ==:17 a=wSIzyl8AIrrWyGTfDxQA:9 From: Dario Binacchi To: linux-clk@vger.kernel.org Cc: Dario Binacchi , Alexandre Torgue , Gabriel Fernandez , Maxime Coquelin , Michael Turquette , Stephen Boyd , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com Subject: [PATCH v2] clk: stm32f4: fix post divisor setup for I2S/SAI PLLs Date: Wed, 23 Jun 2021 23:00:39 +0200 Message-Id: <20210623210039.19494-1-dariobin@libero.it> X-Mailer: git-send-email 2.17.1 X-CMAE-Envelope: MS4xfM514amN4bhnkNihBFRmnPokG3YHEb1br53n59dTy/IwfAJJkYISTe7KYo2ugKKRfik9RU7nvNajiQbHgycxgwd7LeRERYhNYl9+i+NbcoGyD/O5Qg1a aSuOGCQbwneLs/9z9C8rTwxebXeAFhqzs72nDE11LwA32CNEO8SO3lFMsekQfvIg9q/BIKOu8EIkGkYX7SLUnKtaHlUtIUBENQpKTStlq4Lvu8VxlmpUIls2 uTTdOMCgHeHhZAcrAIsHLhAe+BHKoi2ulwkmjpU7kNAY2aku80EqiOS5c+q2u7PuSwC/J7J9w2xCd+IzB+TLm9MHd1X/lUCnjMVBqKMYswyefkXpnhJXt8Yn wFI/lS+He45zCignNnsu2THsC3vZ6XhPNGyxsDa/gCgBEbrlPKhnMu5t9mMWHP5Gag2+4g59EN9DjRtgDQWwQbJGyweisFD5z30zrFS1rIPLF02ZAYFEprvB S98XK05zuNsFfj7X3dUFv5+zwXXWnHLQGRtJCQqX/Omvpejg36nYOPNiiG3gVVr5Wl8HhJucbeCyLVmlhCdVjZoxwd1FuopgDqMuXBSanYkdeC2CEMU6TxR9 phSK6Ua8KdWGijNjr7MEKrX2 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210623_140051_671776_76236995 X-CRM114-Status: GOOD ( 12.14 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Enabling the framebuffer leads to a system hang. Running, as a debug hack, the store_pan() function in drivers/video/fbdev/core/fbsysfs.c without taking the console_lock, allows to see the crash backtrace on the serial line. ~ # echo 0 0 > /sys/class/graphics/fb0/pan [ 9.719414] Unhandled exception: IPSR = 00000005 LR = fffffff1 [ 9.726937] CPU: 0 PID: 49 Comm: sh Not tainted 5.13.0-rc5 #9 [ 9.733008] Hardware name: STM32 (Device Tree Support) [ 9.738296] PC is at clk_gate_is_enabled+0x0/0x28 [ 9.743426] LR is at stm32f4_pll_div_set_rate+0xf/0x38 [ 9.748857] pc : [<0011e4be>] lr : [<0011f9e3>] psr: 0100000b [ 9.755373] sp : 00bc7be0 ip : 00000000 fp : 001f3ac4 [ 9.760812] r10: 002610d0 r9 : 01efe920 r8 : 00540560 [ 9.766269] r7 : 02e7ddb0 r6 : 0173eed8 r5 : 00000000 r4 : 004027c0 [ 9.773081] r3 : 0011e4bf r2 : 02e7ddb0 r1 : 0173eed8 r0 : 1d3267b8 [ 9.779911] xPSR: 0100000b [ 9.782719] CPU: 0 PID: 49 Comm: sh Not tainted 5.13.0-rc5 #9 [ 9.788791] Hardware name: STM32 (Device Tree Support) [ 9.794120] [<0000afa1>] (unwind_backtrace) from [<0000a33f>] (show_stack+0xb/0xc) [ 9.802421] [<0000a33f>] (show_stack) from [<0000a8df>] (__invalid_entry+0x4b/0x4c) The `pll_num' field in the post_div_data configuration contained a wrong value which also referenced an uninitialized hardware clock when clk_register_pll_div() was called. Fixes: 517633ef630e ("clk: stm32f4: Add post divisor for I2S & SAI PLLs") Signed-off-by: Dario Binacchi --- Changes in v2: - Change 'u8 pll_num' from 'stm32f4_pll_post_div_data' structure into 'int pll_idx'. drivers/clk/clk-stm32f4.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/clk/clk-stm32f4.c b/drivers/clk/clk-stm32f4.c index 18117ce5ff85..5c75e3d906c2 100644 --- a/drivers/clk/clk-stm32f4.c +++ b/drivers/clk/clk-stm32f4.c @@ -526,7 +526,7 @@ struct stm32f4_pll { struct stm32f4_pll_post_div_data { int idx; - u8 pll_num; + int pll_idx; const char *name; const char *parent; u8 flag; @@ -557,13 +557,13 @@ static const struct clk_div_table post_divr_table[] = { #define MAX_POST_DIV 3 static const struct stm32f4_pll_post_div_data post_div_data[MAX_POST_DIV] = { - { CLK_I2SQ_PDIV, PLL_I2S, "plli2s-q-div", "plli2s-q", + { CLK_I2SQ_PDIV, PLL_VCO_I2S, "plli2s-q-div", "plli2s-q", CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 0, 5, 0, NULL}, - { CLK_SAIQ_PDIV, PLL_SAI, "pllsai-q-div", "pllsai-q", + { CLK_SAIQ_PDIV, PLL_VCO_SAI, "pllsai-q-div", "pllsai-q", CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 8, 5, 0, NULL }, - { NO_IDX, PLL_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT, + { NO_IDX, PLL_VCO_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 16, 2, 0, post_divr_table }, }; @@ -1774,7 +1774,7 @@ static void __init stm32f4_rcc_init(struct device_node *np) post_div->width, post_div->flag_div, post_div->div_table, - clks[post_div->pll_num], + clks[post_div->pll_idx], &stm32f4_clk_lock); if (post_div->idx != NO_IDX) -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel