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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 219E8C52D6F for ; Wed, 21 Aug 2024 11:12:59 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:CC:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=m5dSbMkXiUKXyGMq2DZiV57p5tXBDfaI3mEs22KkMGo=; b=sKq+M5ZEpR4E+kUgfPIbNT47lm hei526DhqetYZtJNdriKl2SHwEpP2H08rE9i0WxNtGl3l9L0whEDsJKSFofqoMWrAbjI6NZG+4Vw/ nmXfY4Akv1ubcMwWQYzsXheXOjTW34zB4i2buKd9YEW0oUKvGKR3dozI0Am7OliyXhAfpPtQXYf05 i9YbZ8p0/mRnik0ITeCskutS85waQEgJt4Btq86T73KLQZlCMii1DAmCwZNb5gzFpvoydHUeszLQI jIaeKYCpQ214K2GoYtrdTvXLuvxQlePwPRDA9cAAf7NMHIZcGpNkd+Prnsltw/qnSXXKEfE3QazEg 3ycyrwMg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgjGc-00000008cI6-1ikB; Wed, 21 Aug 2024 11:12:42 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sgjDs-00000008bGh-2ofy for linux-arm-kernel@lists.infradead.org; Wed, 21 Aug 2024 11:09:55 +0000 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id 47LB9fcc098519; Wed, 21 Aug 2024 06:09:41 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1724238581; bh=m5dSbMkXiUKXyGMq2DZiV57p5tXBDfaI3mEs22KkMGo=; h=Date:From:To:CC:Subject:References:In-Reply-To; b=WezmwKM4nsVbUm7X4ezUgsXvYcKfj8FhOuc6cwx3toFAJEHCMTotf9ecEpaYvvglB 8h71OIhBTVWXLWqewQiY2KcZH6mez1h/bg+nALupEF2DTxLfsKvl4ZZh+U+ctBIMaX 68ZgbTZMTfqFrlUyyathZtf522XcXkHjQn8bm2P0= Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 47LB9fNx070162 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 21 Aug 2024 06:09:41 -0500 Received: from DFLE104.ent.ti.com (10.64.6.25) by DFLE114.ent.ti.com (10.64.6.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Wed, 21 Aug 2024 06:09:40 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DFLE104.ent.ti.com (10.64.6.25) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Wed, 21 Aug 2024 06:09:40 -0500 Received: from localhost (uda0133052.dhcp.ti.com [128.247.81.232]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 47LB9ecf000669; Wed, 21 Aug 2024 06:09:40 -0500 Date: Wed, 21 Aug 2024 06:09:40 -0500 From: Nishanth Menon To: Bjorn Andersson CC: Judith Mendez , Catalin Marinas , Will Deacon , Geert Uytterhoeven , Dmitry Baryshkov , Krzysztof Kozlowski , Neil Armstrong , , , Vignesh Raghavendra , Bryan Brattlof Subject: Re: [RFC PATCH] arm64: defconfig: Set MFD_TPS6594_I2C as built-in Message-ID: <20240821110940.s5ubbcozk2bouklh@chaps> References: <20240819204352.1423727-1-jm@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240821_040952_833121_51EAC05C X-CRM114-Status: GOOD ( 34.15 ) 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 09:42-20240820, Bjorn Andersson wrote: > On Mon, Aug 19, 2024 at 03:43:52PM -0500, Judith Mendez wrote: > > SK-AM62A-LP is a device targeting automotive front-camera applications > > among other use-cases. It utilizes the TPS6593x PMIC (interfaced over I2C) > > to power the SoC and various other peripherals on the board [1]. > > > > MMCSD requires the PMIC to be setup correctly before setting the bus > > pins to 1.8V using the TPS6594 driver interfaced over i2c. > > > > Currently, the following could be seen when booting the am62ax platform: > > > > "platform fa00000.mmc: deferred probe pending: platform: supplier regulator-5 not ready" > > "vdd_mmc1: disabling" > > Is this the regulator framework disabling the "unused" vdd_mmc1 while > you still have a probe deferred client? > > That's not right. I think context of the full log might be missing, hence misleading - but if this is correct, regulator framework might have a problem as well - it does not change the fact that we will need regulator driver to support switch from 3.3v to 1.8v to enable UHS (which is another topic as well - do not trust the bootloader either for the default voltage enabled in the system). Judith: This is why providing links to previous versions of patches AND providing links to the full before and after logs in the diffstat section helps reviewers - please do that in the next revision. > > > > > and a failure to boot the SK-AM62A-LP. > > > > One solution is to use initramfs [2], but using initramfs increases the > > boot time for this automotive solution which requires faster boot time > > parameters. > > > > Another solution is to change MFD_TPS6594_I2C to built-in, that way the > > PMIC is setup and the regulators are ready before MMCSD switches to UHS > > mode, this is the preferred solution since it does not increase boot time > > like the initramfs solution does. What is the adder in cost? bloat-o-meter report summary should have been part of commits that increase vmlinux > > > > [1] https://www.ti.com/lit/zip/sprr459 > > [2] https://lore.kernel.org/linux-devicetree/5f03207b-c29b-4d16-92b0-d14eef77bf17@linaro.org/ > > Fixes: f9010eb938be ("arm64: defconfig: Enable TPS6593 PMIC for SK-AM62A") > > > > Signed-off-by: Judith Mendez > > --- > > arch/arm64/configs/defconfig | 2 +- > > 1 file changed, 1 insertion(+), 1 deletion(-) > > > > diff --git a/arch/arm64/configs/defconfig b/arch/arm64/configs/defconfig > > index 7d32fca649965..61f767246d3a5 100644 > > --- a/arch/arm64/configs/defconfig > > +++ b/arch/arm64/configs/defconfig > > @@ -756,7 +756,7 @@ CONFIG_RZ_MTU3=y > > CONFIG_MFD_TI_AM335X_TSCADC=m > > CONFIG_MFD_TI_LP873X=m > > CONFIG_MFD_TPS65219=y > > -CONFIG_MFD_TPS6594_I2C=m > > +CONFIG_MFD_TPS6594_I2C=y > > These things should work with =m, and then you can make them =y in your > product config to avoid the probe deferral. I think this is inline with the discussion with Krystoff on the topic as well Judith: you just need the regulator, for sd/mmc to work. Why is there half a dozen unrelated stuff coming with it [1] report from bloat-o-meter? Please fix the driver dependencies before adding un-necessary stuff to the kernel Image file. [1] https://gist.github.com/nmenon/0caff032a430bbf649ad1107e6f12f9a -- Regards, Nishanth Menon Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3 1A34 DDB5 849D 1736 249D