From 4b5aaed68cacd20c49271155245a349562a4164a Mon Sep 17 00:00:00 2001 From: Peter Robinson Date: Tue, 3 Nov 2020 17:05:25 +0000 Subject: arm fixes for 5.9 --- ...-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch | 98 ++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 mmc-sdhci-iproc-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch (limited to 'mmc-sdhci-iproc-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch') diff --git a/mmc-sdhci-iproc-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch b/mmc-sdhci-iproc-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch new file mode 100644 index 000000000..6f5cf820b --- /dev/null +++ b/mmc-sdhci-iproc-Enable-eMMC-DDR-3.3V-support-for-bcm2711.patch @@ -0,0 +1,98 @@ +From patchwork Fri Aug 28 21:47:14 2020 +Content-Type: text/plain; charset="utf-8" +MIME-Version: 1.0 +Content-Transfer-Encoding: 7bit +X-Patchwork-Submitter: Stefan Wahren +X-Patchwork-Id: 11743769 +Return-Path: +Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org + [172.30.200.123]) + by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9294E913 + for ; + Fri, 28 Aug 2020 21:48:59 +0000 (UTC) +Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) + by mail.kernel.org (Postfix) with ESMTP id 83F242078A + for ; + Fri, 28 Aug 2020 21:48:59 +0000 (UTC) +Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand + id S1726418AbgH1Vs7 (ORCPT + ); + Fri, 28 Aug 2020 17:48:59 -0400 +Received: from mout.kundenserver.de ([217.72.192.73]:41343 "EHLO + mout.kundenserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org + with ESMTP id S1726379AbgH1Vs5 (ORCPT + ); Fri, 28 Aug 2020 17:48:57 -0400 +Received: from localhost.localdomain ([37.4.249.236]) by + mrelayeu.kundenserver.de (mreue107 [212.227.15.183]) with ESMTPSA (Nemesis) + id 1MzQTm-1kXpKC3Jq4-00vObT; Fri, 28 Aug 2020 23:48:40 +0200 +From: Stefan Wahren +To: Adrian Hunter , + Ulf Hansson , + Ray Jui , + Scott Branden +Cc: Florian Fainelli , + Nicolas Saenz Julienne , + Matthias Brugger , + bcm-kernel-feedback-list@broadcom.com, linux-mmc@vger.kernel.org, + linux-arm-kernel@lists.infradead.org, + Stefan Wahren +Subject: [PATCH] mmc: sdhci-iproc: Enable eMMC DDR 3.3V support for bcm2711 +Date: Fri, 28 Aug 2020 23:47:14 +0200 +Message-Id: <1598651234-29826-1-git-send-email-stefan.wahren@i2se.com> +X-Mailer: git-send-email 2.7.4 +X-Provags-ID: V03:K1:kiziRvARXQvcShivifQ3e8jFQc5NDvS/jk5DcBO1+kY24pjuxcW + pNMzHbKjpwEkD+6H3B4dmClTpiU+4kjeXUo3zfO/VqTahci/RQgw2Jjg5ClfAO20vRj4cmp + eqHXUd9TKy5yr6xa9AzDep/tDWw/ZAMYe72C6NEC+QVodXdoe7JDC+duHvIEy7khM7PY+GF + NzqIu6pdSVbj1v16NZ+sA== +X-Spam-Flag: NO +X-UI-Out-Filterresults: notjunk:1;V03:K0:eelQECZEP/o=:AtkwbFez+YK2lUaKrnCAex + dIlTU0COpkkpKB5Qb0bMKrb8/w/SPJ2rMBPQOKwEd9/tUzoKWo+ZbAPQPpEnEcUM5QKbnzw+7 + qB1kFvhlFgAjX6S2VYE4TsPxy/Dk93b1KLbB3TpK4iOUqvcYMDP11kGtwphrPqzjB+yWqwO6y + KgxT+VLe4SNkCYaD9JES6M1Hj770HNy3DMUeor3ZbWVQqJsm02Xd9jnX8ThCwNQM0x9NSolVQ + 25RoD6I8fehNYcceOQKKGQTSKFw5NMv66cwKfnVYhvG9mj1Fix4xF1ssUx+PIaAKz9IPtf88l + ls9Dj7R5z6+Jfpg2yCxV8pPeg1/NewyDH1Bmv2XVIVVZa3o3Ffms2jaDcGuRIJzYvAGzwhj+z + G+spv31CNuWsBbUeimVwPoWruWAapA+EIOp57iNo95TYAamLRoBF+aIc4DiCyoVKiHvWl7mOh + iDs2nI+sgIn+GWEfuSGJNNmNXiOSRr8PyVRuQELwCvbnkr1JmZqzYOdiYlIdE60pjRs0VVnSZ + xYhbUBsbEC/lXnNUb5fF1o3qlK742HPj1nJQ3lQOdh1rcqOG20kRgACUeVAbq1NMG3DNsuHRS + xsYTKTMMWPPeSrsGrGwEWQurcjWiskZ8QvmiCkaJHzyxpEWZfmqH30xnyIVdeVakqbob0ddv6 + VLEnvtryHj/lA4fHtioyBJ4A5CpKR2At7wnlKOICKyaHniUfMlssMuxexvZkbh5Tk/TR7aW7A + krPi5wigbGYz2Pf0BiIjJOix9EDYS3+e2oyn6oFZX2gJcfDBT48tMcVYK3IOk6vnwvvmszY/k + jexjMPuNFqHptYGNN/TyrXxKulWcZQdCYcksDfKHCrY0TIrxu44YkbhUl22nDy4LRXZQU6h +Sender: linux-mmc-owner@vger.kernel.org +Precedence: bulk +List-ID: +X-Mailing-List: linux-mmc@vger.kernel.org + +The emmc2 interface on the bcm2711 supports DDR modes for eMMC devices +running at 3.3V. This allows to run eMMC module with 3.3V signaling voltage +at DDR52 mode on the Raspberry Pi 4 using a SD adapter: + + clock: 52000000 Hz + actual clock: 50000000 Hz + vdd: 21 (3.3 ~ 3.4 V) + bus mode: 2 (push-pull) + chip select: 0 (don't care) + power mode: 2 (on) + bus width: 2 (4 bits) + timing spec: 8 (mmc DDR52) + signal voltage: 0 (3.30 V) + driver type: 0 (driver type B) + +Link: https://github.com/raspberrypi/linux/issues/3802 +Signed-off-by: Stefan Wahren +--- + drivers/mmc/host/sdhci-iproc.c | 1 + + 1 file changed, 1 insertion(+) + +diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c +index e2d8dfe..b540aa6 100644 +--- a/drivers/mmc/host/sdhci-iproc.c ++++ b/drivers/mmc/host/sdhci-iproc.c +@@ -283,6 +283,7 @@ static const struct sdhci_pltfm_data sdhci_bcm2711_pltfm_data = { + + static const struct sdhci_iproc_data bcm2711_data = { + .pdata = &sdhci_bcm2711_pltfm_data, ++ .mmc_caps = MMC_CAP_3_3V_DDR, + }; + + static const struct of_device_id sdhci_iproc_of_match[] = { -- cgit