From patchwork Mon Jul 24 13:59:01 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 9859499 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id E90C6600F5 for ; Mon, 24 Jul 2017 14:01:04 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DA97D27F97 for ; Mon, 24 Jul 2017 14:01:04 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id CF1BF284B2; Mon, 24 Jul 2017 14:01:04 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 159DF27F97 for ; Mon, 24 Jul 2017 14:01:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932208AbdGXOBB (ORCPT ); Mon, 24 Jul 2017 10:01:01 -0400 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:60988 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755915AbdGXN7S (ORCPT ); Mon, 24 Jul 2017 09:59:18 -0400 Received: by wens.csie.org (Postfix, from userid 1000) id DF3415FD39; Mon, 24 Jul 2017 21:59:12 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard , Ulf Hansson , Michael Turquette , Stephen Boyd , Rob Herring , Mark Rutland Cc: Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, linux-mmc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com Subject: [PATCH v3 06/10] mmc: sunxi: Add support for A83T eMMC (MMC2) Date: Mon, 24 Jul 2017 21:59:01 +0800 Message-Id: <20170724135905.28855-7-wens@csie.org> X-Mailer: git-send-email 2.13.3 In-Reply-To: <20170724135905.28855-1-wens@csie.org> References: <20170724135905.28855-1-wens@csie.org> Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The third MMC controller (MMC2) on the Allwinner A83T SoC is slightly different. It supports a wider 8-bit bus, has a dedicated controllable reset pin for eMMC, and a "new timing mode" which is supposed to deliver better signals and thus better performance. Add a compatible for this one to use the new timing mode not found in the other controllers. Signed-off-by: Chen-Yu Tsai Acked-by: Rob Herring Acked-by: Maxime Ripard --- Documentation/devicetree/bindings/mmc/sunxi-mmc.txt | 1 + drivers/mmc/host/sunxi-mmc.c | 8 ++++++++ 2 files changed, 9 insertions(+) diff --git a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt index 7d53a799f140..63b57e2a10fb 100644 --- a/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt +++ b/Documentation/devicetree/bindings/mmc/sunxi-mmc.txt @@ -12,6 +12,7 @@ Required properties: * "allwinner,sun4i-a10-mmc" * "allwinner,sun5i-a13-mmc" * "allwinner,sun7i-a20-mmc" + * "allwinner,sun8i-a83t-emmc" * "allwinner,sun9i-a80-mmc" * "allwinner,sun50i-a64-emmc" * "allwinner,sun50i-a64-mmc" diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 11587a69a1fd..de187ed77040 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -1117,6 +1117,13 @@ static const struct sunxi_mmc_cfg sun7i_a20_cfg = { .can_calibrate = false, }; +static const struct sunxi_mmc_cfg sun8i_a83t_emmc_cfg = { + .idma_des_size_bits = 16, + .clk_delays = sunxi_mmc_clk_delays, + .can_calibrate = false, + .has_timings_switch = true, +}; + static const struct sunxi_mmc_cfg sun9i_a80_cfg = { .idma_des_size_bits = 16, .clk_delays = sun9i_mmc_clk_delays, @@ -1141,6 +1148,7 @@ static const struct of_device_id sunxi_mmc_of_match[] = { { .compatible = "allwinner,sun4i-a10-mmc", .data = &sun4i_a10_cfg }, { .compatible = "allwinner,sun5i-a13-mmc", .data = &sun5i_a13_cfg }, { .compatible = "allwinner,sun7i-a20-mmc", .data = &sun7i_a20_cfg }, + { .compatible = "allwinner,sun8i-a83t-emmc", .data = &sun8i_a83t_emmc_cfg }, { .compatible = "allwinner,sun9i-a80-mmc", .data = &sun9i_a80_cfg }, { .compatible = "allwinner,sun50i-a64-mmc", .data = &sun50i_a64_cfg }, { .compatible = "allwinner,sun50i-a64-emmc", .data = &sun50i_a64_emmc_cfg },