From mboxrd@z Thu Jan 1 00:00:00 1970 From: Suman Tripathi Subject: [PATCH v6 2/2] mmc: sdhci: Add support to disable SDR104/SDR50/DDR50 based on capability register 0. Date: Wed, 6 May 2015 19:12:11 +0530 Message-ID: <1430919731-9016-3-git-send-email-stripathi@apm.com> References: <1430919731-9016-1-git-send-email-stripathi@apm.com> Return-path: Received: from denmail01-v4020.amcc.com ([192.195.68.30]:36948 "EHLO denmail01.amcc.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S1750737AbbEFNna (ORCPT ); Wed, 6 May 2015 09:43:30 -0400 In-Reply-To: <1430919731-9016-1-git-send-email-stripathi@apm.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: chris@printf.net, anton@enomsg.org, arnd@arndb.de, michal.simek@xilinx.com Cc: linux-mmc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, ddutile@redhat.com, jcm@redhat.com, mlangsdo@redhat.com, patches@apm.com, Suman Tripathi The sdhci framework disables SDR104/SDR50/DDR50 based on only quirk. This patch adds the support to disable SDR104/SDR50/DDR50 based on reading the capability register 0. Signed-off-by: Suman Tripathi --- drivers/mmc/host/sdhci.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index c80287a..e024c64 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -3199,7 +3199,8 @@ int sdhci_add_host(struct sdhci_host *host) } } - if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V) + if (host->quirks2 & SDHCI_QUIRK2_NO_1_8_V || + !(caps[0] & SDHCI_CAN_VDD_180)) caps[1] &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 | SDHCI_SUPPORT_DDR50); -- 1.8.2.1