From patchwork Tue Oct 20 09:13:03 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chaotian Jing X-Patchwork-Id: 7444431 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 0910D9F37F for ; Tue, 20 Oct 2015 09:16:21 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id E61F620844 for ; Tue, 20 Oct 2015 09:16:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 1D17420842 for ; Tue, 20 Oct 2015 09:16:18 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZoT0A-00086M-BN; Tue, 20 Oct 2015 09:14:38 +0000 Received: from [210.61.82.183] (helo=mailgw01.mediatek.com) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1ZoSzp-0007Es-LW; Tue, 20 Oct 2015 09:14:20 +0000 X-Listener-Flag: 11101 Received: from mtkhts09.mediatek.inc [(172.21.101.70)] by mailgw01.mediatek.com (envelope-from ) (mhqrelay.mediatek.com ESMTP with TLS) with ESMTP id 974079467; Tue, 20 Oct 2015 17:13:51 +0800 Received: from localhost.localdomain (10.17.3.153) by mtkhts09.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 14.3.181.6; Tue, 20 Oct 2015 17:13:49 +0800 From: Chaotian Jing To: Ulf Hansson Subject: [PATCH v2 1/9] mmc: core: Add DT bindings for eMMC hardware reset support Date: Tue, 20 Oct 2015 17:13:03 +0800 Message-ID: <1445332391-30530-2-git-send-email-chaotian.jing@mediatek.com> X-Mailer: git-send-email 1.8.1.1.dirty In-Reply-To: <1445332391-30530-1-git-send-email-chaotian.jing@mediatek.com> References: <1445332391-30530-1-git-send-email-chaotian.jing@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151020_021418_239770_64268876 X-CRM114-Status: GOOD ( 13.54 ) X-Spam-Score: -1.1 (-) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , Krzysztof Kozlowski , Seungwon Jeon , Catalin Marinas , Will Deacon , linux-kernel@vger.kernel.org, Minda Chen , Dong Aisheng , Lars-Peter Clausen , Weijun Yang , Jaehoon Chung , linux-samsung-soc@vger.kernel.org, Howard Chen , Kukjin Kim , linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org, ivan.ivanov@linaro.org, devicetree@vger.kernel.org, Pawel Moll , Ian Campbell , Sascha Hauer , Hans de Goede , Rob Herring , linux-mediatek@lists.infradead.org, Matthias Brugger , Chaotian Jing , Fabio Estevam , Barry Song , Kevin Hao , srv_heupstream@mediatek.com, Sergei Shtylyov , Haibo Chen , Stephen Boyd , Adrian Hunter , Georgi Djakov , Kumar Gala , Johan Derycke , Javier Martinez Canillas Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Sometime only need set MMC_CAP_HW_RESET for one of MMC hosts, So set it in device tree is better. Signed-off-by: Chaotian Jing --- Documentation/devicetree/bindings/mmc/mmc.txt | 1 + drivers/mmc/core/host.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/mmc.txt b/Documentation/devicetree/bindings/mmc/mmc.txt index 0384fc3..f693baf 100644 --- a/Documentation/devicetree/bindings/mmc/mmc.txt +++ b/Documentation/devicetree/bindings/mmc/mmc.txt @@ -37,6 +37,7 @@ Optional properties: - sd-uhs-sdr104: SD UHS SDR104 speed is supported - sd-uhs-ddr50: SD UHS DDR50 speed is supported - cap-power-off-card: powering off the card is safe +- cap-mmc-hw-reset: eMMC hardware reset is supported - cap-sdio-irq: enable SDIO IRQ signalling on this interface - full-pwr-cycle: full power cycle of the card is supported - mmc-ddr-1_8v: eMMC high-speed DDR mode(1.8V I/O) is supported diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index abd933b..04fdc2f 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -507,6 +507,8 @@ int mmc_of_parse(struct mmc_host *host) host->caps |= MMC_CAP_UHS_DDR50; if (of_property_read_bool(np, "cap-power-off-card")) host->caps |= MMC_CAP_POWER_OFF_CARD; + if (of_property_read_bool(np, "cap-mmc-hw-reset")) + host->caps |= MMC_CAP_HW_RESET; if (of_property_read_bool(np, "cap-sdio-irq")) host->caps |= MMC_CAP_SDIO_IRQ; if (of_property_read_bool(np, "full-pwr-cycle"))