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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED 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 74065C433DF for ; Fri, 3 Jul 2020 19:37:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61AD72073E for ; Fri, 3 Jul 2020 19:37:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726645AbgGCTgz (ORCPT ); Fri, 3 Jul 2020 15:36:55 -0400 Received: from asavdk4.altibox.net ([109.247.116.15]:51528 "EHLO asavdk4.altibox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726236AbgGCTgz (ORCPT ); Fri, 3 Jul 2020 15:36:55 -0400 Received: from ravnborg.org (unknown [188.228.123.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by asavdk4.altibox.net (Postfix) with ESMTPS id 016FA804F9; Fri, 3 Jul 2020 21:36:49 +0200 (CEST) Date: Fri, 3 Jul 2020 21:36:48 +0200 From: Sam Ravnborg To: Tomi Valkeinen Cc: Adam Ford , linux-fbdev@vger.kernel.org, Bartlomiej Zolnierkiewicz , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, stable@vger.kernel.org, linux-omap@vger.kernel.org Subject: Re: [PATCH] omapfb: dss: Fix max fclk divider for omap36xx Message-ID: <20200703193648.GA373653@ravnborg.org> References: <20200630182636.439015-1-aford173@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-CMAE-Score: 0 X-CMAE-Analysis: v=2.3 cv=aP3eV41m c=1 sm=1 tr=0 a=S6zTFyMACwkrwXSdXUNehg==:117 a=S6zTFyMACwkrwXSdXUNehg==:17 a=kj9zAlcOel0A:10 a=VwQbUJbxAAAA:8 a=pGLkceISAAAA:8 a=sozttTNsAAAA:8 a=P1BnusSwAAAA:8 a=7gkXJVJtAAAA:8 a=hD80L64hAAAA:8 a=i0EeH86SAAAA:8 a=e5mUnYsNAAAA:8 a=0HEiEkm5zgkht_cWyOUA:9 a=CjuIK1q_8ugA:10 a=AjGcO6oz07-iQ99wixmX:22 a=aeg5Gbbo78KNqacMgKqU:22 a=D0XLA9XvdZm18NrgonBM:22 a=E9Po1WZjFZOl8hwRPBS3:22 a=Vxmtnl_E_bksehYqCbjh:22 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org Hi Tomi. On Fri, Jul 03, 2020 at 10:17:29AM +0300, Tomi Valkeinen wrote: > On 30/06/2020 21:26, Adam Ford wrote: > > The drm/omap driver was fixed to correct an issue where using a > > divider of 32 breaks the DSS despite the TRM stating 32 is a valid > > number. Through experimentation, it appears that 31 works, and > > it is consistent with the value used by the drm/omap driver. > > > > This patch fixes the divider for fbdev driver instead of the drm. > > > > Fixes: f76ee892a99e ("omapfb: copy omapdss & displays for omapfb") > > > > Cc: #4.9+ > > Signed-off-by: Adam Ford > > --- > > Linux 4.4 will need a similar patch, but it doesn't apply cleanly. > > > > The DRM version of this same fix is: > > e2c4ed148cf3 ("drm/omap: fix max fclk divider for omap36xx") > > > > > > diff --git a/drivers/video/fbdev/omap2/omapfb/dss/dss.c b/drivers/video/fbdev/omap2/omapfb/dss/dss.c > > index 7252d22dd117..bfc5c4c5a26a 100644 > > --- a/drivers/video/fbdev/omap2/omapfb/dss/dss.c > > +++ b/drivers/video/fbdev/omap2/omapfb/dss/dss.c > > @@ -833,7 +833,7 @@ static const struct dss_features omap34xx_dss_feats = { > > }; > > static const struct dss_features omap3630_dss_feats = { > > - .fck_div_max = 32, > > + .fck_div_max = 31, > > .dss_fck_multiplier = 1, > > .parent_clk_name = "dpll4_ck", > > .dpi_select_source = &dss_dpi_select_source_omap2_omap3, > > > > Reviewed-by: Tomi Valkeinen Will you apply to drm-misc? Note following output from "dim fixes": $ dim fixes f76ee892a99e Fixes: f76ee892a99e ("omapfb: copy omapdss & displays for omapfb") Cc: Tomi Valkeinen Cc: Dave Airlie Cc: Rob Clark Cc: Laurent Pinchart Cc: Sam Ravnborg Cc: Bartlomiej Zolnierkiewicz Cc: Jason Yan Cc: "Andrew F. Davis" Cc: YueHaibing Cc: # v4.5+ Here it says the fix is valid from v4.5 onwards. Sam > > Tomi > > -- > Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. > Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki > _______________________________________________ > dri-devel mailing list > dri-devel@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/dri-devel