From patchwork Thu Jul 11 09:15:29 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wei Ni X-Patchwork-Id: 258393 Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from ozlabs.org (localhost [IPv6:::1]) by ozlabs.org (Postfix) with ESMTP id 50FD72C037E for ; Thu, 11 Jul 2013 19:54:56 +1000 (EST) Received: from hqemgate03.nvidia.com (hqemgate03.nvidia.com [216.228.121.140]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id 37AD42C02FE; Thu, 11 Jul 2013 19:16:36 +1000 (EST) Received: from hqnvupgp07.nvidia.com (Not Verified[216.228.121.13]) by hqemgate03.nvidia.com id ; Thu, 11 Jul 2013 02:24:01 -0700 Received: from hqemhub01.nvidia.com ([172.20.12.94]) by hqnvupgp07.nvidia.com (PGP Universal service); Thu, 11 Jul 2013 02:17:21 -0700 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Thu, 11 Jul 2013 02:17:21 -0700 Received: from hkemhub02.nvidia.com (10.18.67.13) by hqemhub01.nvidia.com (172.20.150.30) with Microsoft SMTP Server (TLS) id 8.3.298.1; Thu, 11 Jul 2013 02:16:26 -0700 Received: from niwei-ubuntu.nvidia.com (10.18.67.5) by hkemhub02.nvidia.com (10.18.67.13) with Microsoft SMTP Server id 8.3.298.1; Thu, 11 Jul 2013 17:16:24 +0800 From: Wei Ni To: , , , Subject: [PATCH] mmc: dt: add host-off-card-on dt property Date: Thu, 11 Jul 2013 17:15:29 +0800 Message-ID: <1373534129-9017-1-git-send-email-wni@nvidia.com> X-Mailer: git-send-email 1.7.9.5 X-NVConfidentiality: public MIME-Version: 1.0 X-Mailman-Approved-At: Thu, 11 Jul 2013 19:54:31 +1000 Cc: Wei Ni , linux-doc@vger.kernel.org, devicetree-discuss@lists.ozlabs.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: linuxppc-dev-bounces+patchwork-incoming=ozlabs.org@lists.ozlabs.org Sender: "Linuxppc-dev" Add "host-off-card-on" dt property and parse it to support the quirk SDHCI_QUIRK2_HOST_OFF_CARD_ON. Signed-off-by: Wei Ni --- Documentation/devicetree/bindings/mmc/mmc.txt | 2 ++ drivers/mmc/host/sdhci-pltfm.c | 3 +++ 2 files changed, 5 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 85aada2..95ebe3e 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -28,6 +28,8 @@ Optional properties: - cap-mmc-highspeed: MMC high-speed timing is supported - cap-power-off-card: powering off the card is safe - cap-sdio-irq: enable SDIO IRQ signalling on this interface +- host-off-card-on: when resume, denote that card keeps power + but host controller does not, so that it will reset sdhci all. *NOTE* on CD and WP polarity. To use common for all SD/MMC host controllers line polarity properties, we have to fix the meaning of the "normal" and "inverted" diff --git a/drivers/mmc/host/sdhci-pltfm.c b/drivers/mmc/host/sdhci-pltfm.c index cd0f1f6..b3730cc 100644 --- a/drivers/mmc/host/sdhci-pltfm.c +++ b/drivers/mmc/host/sdhci-pltfm.c @@ -89,6 +89,9 @@ void sdhci_get_of_property(struct platform_device *pdev) if (of_get_property(np, "no-1-8-v", NULL)) host->quirks2 |= SDHCI_QUIRK2_NO_1_8_V; + if (of_get_property(np, "host-off-card-on", NULL)) + host->quirks2 |= SDHCI_QUIRK2_HOST_OFF_CARD_ON; + if (of_device_is_compatible(np, "fsl,p2020-rev1-esdhc")) host->quirks |= SDHCI_QUIRK_BROKEN_DMA;