From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from va3outboundpool.messaging.microsoft.com (va3ehsobe001.messaging.microsoft.com [216.32.180.11]) (using TLSv1 with cipher AES128-SHA (128/128 bits)) (Client CN "mail.global.frontbridge.com", Issuer "Microsoft Secure Server Authority" (not verified)) by ozlabs.org (Postfix) with ESMTPS id B1B742C008A for ; Thu, 22 Nov 2012 19:13:56 +1100 (EST) From: Chunhe Lan To: Subject: [PATCH] mmc: esdhi: Add SDHCI_QUIRK_QORIQ_CIRCUIT_SUPPORT_VS33 quirk support Date: Thu, 22 Nov 2012 16:14:44 +0800 Message-ID: <1353572084-3196-1-git-send-email-Chunhe.Lan@freescale.com> MIME-Version: 1.0 Content-Type: text/plain Cc: kumar.gala@freescale.com, cjb@laptop.org, linuxppc-dev@lists.ozlabs.org, Chunhe Lan List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On the some platforms of Freescale, sdhci controller can only support 1.8V voltage, but the peripheral hardware circuit has capability to support 3.3V voltage. Signed-off-by: Chunhe Lan --- drivers/mmc/host/sdhci.c | 3 +++ include/linux/mmc/sdhci.h | 4 ++++ 2 files changed, 7 insertions(+), 0 deletions(-) diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 4fe2de8..e4a537d 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2682,6 +2682,9 @@ int sdhci_add_host(struct sdhci_host *host) host->caps1 : sdhci_readl(host, SDHCI_CAPABILITIES_1); + if (host->quirks & SDHCI_QUIRK_QORIQ_CIRCUIT_SUPPORT_VS33) + caps[0] = caps[0] | SDHCI_CAN_VDD_330; + if (host->quirks & SDHCI_QUIRK_FORCE_DMA) host->flags |= SDHCI_USE_SDMA; else if (!(caps[0] & SDHCI_CAN_DO_SDMA)) diff --git a/include/linux/mmc/sdhci.h b/include/linux/mmc/sdhci.h index 1edcb4d..78eced5 100644 --- a/include/linux/mmc/sdhci.h +++ b/include/linux/mmc/sdhci.h @@ -87,6 +87,10 @@ struct sdhci_host { #define SDHCI_QUIRK_BROKEN_ADMA_ZEROLEN_DESC (1<<30) /* The read-only detection via SDHCI_PRESENT_STATE register is unstable */ #define SDHCI_QUIRK_UNSTABLE_RO_DETECT (1<<31) +/* Controller can only supports 1.8V, but the peripheral hardware + * circuit has capability to support 3.3V + */ +#define SDHCI_QUIRK_QORIQ_CIRCUIT_SUPPORT_VS33 (1U<<32) unsigned int quirks2; /* More deviations from spec. */ -- 1.7.6.5