From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:40916 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751745AbbJRAdc (ORCPT ); Sat, 17 Oct 2015 20:33:32 -0400 Subject: Patch "mmc: sdhci-pxav3: disable clock inversion for HS MMC cards" has been added to the 4.2-stable tree To: nadavh@marvell.com, gregkh@linuxfoundation.org, gregory.clement@free-electrons.com, ulf.hansson@linaro.org Cc: , From: Date: Sat, 17 Oct 2015 17:33:31 -0700 Message-ID: <1445128411228103@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled mmc: sdhci-pxav3: disable clock inversion for HS MMC cards to the 4.2-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: mmc-sdhci-pxav3-disable-clock-inversion-for-hs-mmc-cards.patch and it can be found in the queue-4.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From fa7964147da57b2d40c2db2b6ed98fb7dc934bff Mon Sep 17 00:00:00 2001 From: Nadav Haklai Date: Tue, 6 Oct 2015 03:22:36 +0200 Subject: mmc: sdhci-pxav3: disable clock inversion for HS MMC cards From: Nadav Haklai commit fa7964147da57b2d40c2db2b6ed98fb7dc934bff upstream. According to 'FE-2946959' erratum the clock inversion option is needed to support slow frequencies when the card input hold time requirement is high. This setting is not required for high speed MMC and might cause timing violation. Signed-off-by: Nadav Haklai Reviewed-by: Gregory CLEMENT Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman diff --git a/drivers/mmc/host/sdhci-pxav3.c b/drivers/mmc/host/sdhci-pxav3.c index 976cddd6d157..89a9e49e2ea8 100644 --- a/drivers/mmc/host/sdhci-pxav3.c +++ b/drivers/mmc/host/sdhci-pxav3.c @@ -291,6 +291,9 @@ static void pxav3_set_uhs_signaling(struct sdhci_host *host, unsigned int uhs) uhs == MMC_TIMING_UHS_DDR50) { reg_val &= ~SDIO3_CONF_CLK_INV; reg_val |= SDIO3_CONF_SD_FB_CLK; + } else if (uhs == MMC_TIMING_MMC_HS) { + reg_val &= ~SDIO3_CONF_CLK_INV; + reg_val &= ~SDIO3_CONF_SD_FB_CLK; } else { reg_val |= SDIO3_CONF_CLK_INV; reg_val &= ~SDIO3_CONF_SD_FB_CLK; Patches currently in stable-queue which might be from nadavh@marvell.com are queue-4.2/mmc-sdhci-pxav3-disable-clock-inversion-for-hs-mmc-cards.patch queue-4.2/mmc-sdhci-pxav3-remove-broken-clock-base-quirk-for-armada-38x-sdhci-driver.patch