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 Received: from phobos.denx.de (phobos.denx.de [85.214.62.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CD81BC04A95 for ; Wed, 28 Sep 2022 09:26:49 +0000 (UTC) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id 03D0B844E4; Wed, 28 Sep 2022 11:26:47 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="PkbUXQ/6"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id B95E88491C; Wed, 28 Sep 2022 11:26:44 +0200 (CEST) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id 4E7DB803D2 for ; Wed, 28 Sep 2022 11:26:42 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kernel.org Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=lee@kernel.org Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id D051CB8201A; Wed, 28 Sep 2022 09:26:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 19BBBC433D7; Wed, 28 Sep 2022 09:26:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1664357200; bh=e81iQ9V2NwHaewXUiJsuad6M7+ApuEP//xSh2XuG0Kc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=PkbUXQ/6Y46vXd5RSu7TUsZ0DeyzIKTm/q/qPtOVxbQchVprW3MDB6aW1OSLSfUgA t0TTTqj0BBTdFELcl9ff2q4aR8MtrFbKWH23pm90lPzqoy1S7kkLiHHqqkl5AQuHz1 bGjz76StZeW1wXtI2XBNT1B899GLWDu5fNC2/j9zsT3Rl5rxra7EquR29jrYKAoRE8 Ey+n7bYNSQO37o8IRVbrzU9VdZGeP1raV75SD/viBEaTtXdn0T523Ebz7RWI6a/gOE o12z0qCcS+TRtWVH/2BTfCIUXImvJGlxWfo73FIPPY45pMIEGd6xgQ0MFmSVP/VO0a 9o14dIeFcjfLg== Date: Wed, 28 Sep 2022 10:26:35 +0100 From: Lee Jones To: Kever Yang Cc: u-boot@lists.denx.de, sjg@chromium.org, philipp.tomsich@vrull.eu Subject: Re: [RESEND 0/3] rockchip: Fix RAM training on RK3399 based platforms (Rock Pi 4) Message-ID: References: <20220811110903.1836958-1-lee@kernel.org> <25cee693-b3aa-a663-5208-84776a742f15@rock-chips.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <25cee693-b3aa-a663-5208-84776a742f15@rock-chips.com> X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.6 at phobos.denx.de X-Virus-Status: Clean On Fri, 09 Sep 2022, Kever Yang wrote: > Hi Lee Jones, > > On 2022/9/8 15:44, Lee Jones wrote: > > On Thu, 11 Aug 2022, Lee Jones wrote: > > > > > This set fixes several issues found on the Rock Pi 4. > > > > > > For full context, please see this initial bug report: > > > > > > "There appear to be a number of issues with the Rockchip rk3399 DDR RAM > > > initialisation sequence in Mainline. Specifically, I'm seeing > > > consistent failures on the Rock Pi 4+ during early boot. A typical > > > failure looks something like this: > > > U-Boot TPL 2022.07-rc3-00005-g1b04a961c6 (May 25 2022 - 11:09:19) > > > Channel 0: LPDDR4, 50MHz > > > BW=32 Col=10 Bk=8 CS0 Row=16/15 CS=1 Die BW=16 Size=2048MB > > > Channel 1: col error > > > Cap error! > > > 256B stride > > > lpddr4_set_rate: change freq to 400000000 mhz 0, 1 > > > lpddr4_set_rate: change freq to 800000000 mhz 1, 0 > > > Trying to boot from BOOTROM > > > Returning to boot ROM... > > > Even when the system boots to a terminal, which happens very > > > infrequently, the LPDDR4 RAM chip at Channel 1 can have conflicting > > > discovery information printed during TPL. The following 3 lines were > > > printed during successive reboots using the same SD card with no > > > changes: > > > # Boot 1: > > > BW=32 Col=9 Bk=4 CS0 Row=16/15 CS=1 Die BW=16 Size=384MB > > > # Boot 2: > > > BW=32 Col=10 Bk=4 CS0 Row=16/15 CS=1 Die BW=16 Size=768MB > > > # Boot 3: > > > BW=32 Col=10 Bk=4 CS0 Row=15 CS=1 Die BW=16 Size=512MB > > > The story changes when I build the idbloader.img image with Rockchip's > > > TBL (?) binary blob [0]. With that built in, presumably in place of > > > the upstream TBL, both RAM chips are successfully enumerated and boot > > > succeeds with 100% success rate: > > > tools/mkimage -n rk3399 -T rksd -d \ > > > rk3399_ddr_933MHz_v1.25.bin:spl/u-boot-spl.bin idbloader.img > > > Another thing that is very different between the 2 is the initial > > > frequency the LPDDR4 chips are clocked at. Using the upstream TBL > > > version, the default is 50Mhz, which seems very low. If using the > > > Rockchip supplied binary blob file, this is increased to a respectable > > > 416MHz: > > > # Mainline > > > Channel 0: LPDDR4, 50MHz > > > # Rockchip TBL blob > > > Channel 0: LPDDR4,416MHz > > > One thing I did try was to load in the 400Mhz configuration settings > > > from drivers/ram/rockchip/sdram-rk3399-lpddr4-400.inc as the default > > > initial values, instead of the 50MHz default taken from > > > arch/arm/dts/rk3399-sdram-lpddr4-100.dtsi, but this failed in a number > > > of ways: > > > Setting clock: Freq: 400MHz (400000000) > > > Calling SDRAM init: 2 Channels > > > Starting SDRAM initialization... > > > mr5:0 mr12:0 mr14:0 > > > Training failed for rank 2, ch 0 (ret: -22) > > > mr5:0 mr12:0 mr14:0 > > > Training failed for rank 1, ch 0 (ret: -22) > > > mr5:0 mr12:0 mr14:0 > > > Training failed for rank 2, ch 1 (ret: -22) > > > mr5:0 mr12:0 mr14:0 > > > Training failed for rank 1, ch 1 (ret: -22) > > > Rank for Channel 1 is 0x0 > > > Rank for Channel 0 is 0x0 > > > Rank for Channel 1 is 0x0 > > > sdram_init: LPDDR4 - 400MHz failed! > > > rk3399_dmc_init DRAM init failed -22 > > > So my question is; does Rockchip, or anyone else for that matter, have > > > any plans on updating Mainline U-Boot with the upgraded/working LPDDR4 > > > initialisation sequence?" > > > > > > Lee Jones (3): > > > ram: rk3399: Fix .set_rate_index() error handling > > > ram: rk3399: Fix faulty frequency change reports > > > ram: rk3399: Conduct memory training at 400MHz > > > > > > drivers/ram/rockchip/sdram_rk3399.c | 38 +++++++++++++++++------------ > > > 1 file changed, 23 insertions(+), 15 deletions(-) > > Looks as though we have all the Reviews we need. > > > > Would someone be kind enough to merge these patches please? > > Yes, I will merge this patch set soon. Any luck with this Kever? -- Lee Jones [李琼斯]