From patchwork Tue Aug 7 06:17:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Masahiro Yamada X-Patchwork-Id: 954369 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=socionext.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=nifty.com header.i=@nifty.com header.b="OJ5x4AmH"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41l48q1Yx3z9rvt for ; Tue, 7 Aug 2018 16:18:51 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388680AbeHGIba (ORCPT ); Tue, 7 Aug 2018 04:31:30 -0400 Received: from conuserg-08.nifty.com ([210.131.2.75]:39875 "EHLO conuserg-08.nifty.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728125AbeHGIbT (ORCPT ); Tue, 7 Aug 2018 04:31:19 -0400 Received: from pug.e01.socionext.com (p14092-ipngnfx01kyoto.kyoto.ocn.ne.jp [153.142.97.92]) (authenticated) by conuserg-08.nifty.com with ESMTP id w776HYgf009463; Tue, 7 Aug 2018 15:17:37 +0900 DKIM-Filter: OpenDKIM Filter v2.10.3 conuserg-08.nifty.com w776HYgf009463 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nifty.com; s=dec2015msa; t=1533622658; bh=CDsPjvZxJ6vyqPNJqrby0MCDRw1rWBu5Y5NaXcK1G3A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OJ5x4AmHN6VIFmYNTxCtwlLy0Ot0EiENcE7MxUthfOaokJrPYNdRhR3b0K6zrksJS TjuA2uKk5Yx4JJ5LXRD5F822Ar/4kfg4nqkZhO9J8THjWkNV8l5zePdY7m0asmQnEk udBfk8ilzuka0J6HOontqOpx+R2DPVgR482+hupoEplVV+HrMLl3VcANwmGhrTNEcJ 6wSLlCc3i8Klln5WhV3ORlDZO7cjVS4OW7NAj7K7JPpXGDWwx4N9F8xWhf+WxjIyKG anO9qtofaJw2QAN+QItI68eF6Pj/x1K6PAvbqTTNxkMnFw6JW1Mg2uzbLmhxjkVcoG pJ78+Td23/1KA== X-Nifty-SrcIP: [153.142.97.92] From: Masahiro Yamada To: Wolfram Sang , linux-mmc@vger.kernel.org Cc: Ulf Hansson , linux-renesas-soc@vger.kernel.org, Masami Hiramatsu , Jassi Brar , Masahiro Yamada , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Rob Herring , Mark Rutland , linux-arm-kernel@lists.infradead.org Subject: [v0.1 PATCH 3/7] dt-bindings: mmc: add DT binding for UniPhier SD/eMMC controller Date: Tue, 7 Aug 2018 15:17:18 +0900 Message-Id: <1533622642-13989-4-git-send-email-yamada.masahiro@socionext.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1533622642-13989-1-git-send-email-yamada.masahiro@socionext.com> References: <1533622642-13989-1-git-send-email-yamada.masahiro@socionext.com> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This SD/eMMC controller is used for UniPhier SoC family. Signed-off-by: Masahiro Yamada Reviewed-by: Rob Herring --- .../devicetree/bindings/mmc/uniphier-sd.txt | 60 ++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/uniphier-sd.txt diff --git a/Documentation/devicetree/bindings/mmc/uniphier-sd.txt b/Documentation/devicetree/bindings/mmc/uniphier-sd.txt new file mode 100644 index 0000000..49dd0fc --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/uniphier-sd.txt @@ -0,0 +1,60 @@ +UniPhier SD/eMMC controller + +Required properties: +- compatible: should be one of the following: + "socionext,uniphier-sd-v2.91" - IP version 2.91 + "socionext,uniphier-sd-v3.1" - IP version 3.1 + "socionext,uniphier-sd-v3.1b" - IP version 3.1 (bug-fix ver.) [1] +- reg: offset and length of the register set for the device. +- interrupts: a single interrupt specifier. +- clocks: a single clock specifier of the controller clock. +- reset-names: should contain the following: + "host" - mandatory for all versions + "bridge" - should exist only for "socionext,uniphier-sd-v2.91" + "hw" - should exist if eMMC hw reset line is available +- resets: a list of reset specifiers, corresponding to the reset-names + +[1] There are two different controller cores for version 3.1. The early + release had a bug in the DMA RX channel. The issue was fixed later, + but the version number was not incremented. Hence, the latter has + 'b' at the end of its compatible string. + +Optional properties: +- pinctrl-names: if present, should contain the following: + "default" - should exist for all instances + "uhs" - should exist for SD instance with UHS support +- pinctrl-0: pin control state for the default mode +- pinctrl-1: pin control state for the UHS mode +- dma-names: should be "rx-tx" if present. + This property can exist only for "socionext,uniphier-sd-v2.91". +- dmas: a single DMA channel specifier + This property can exist only for "socionext,uniphier-sd-v2.91". +- bus-width: see mmc.txt +- cap-sd-highspeed: see mmc.txt +- cap-mmc-highspeed: see mmc.txt +- sd-uhs-sdr12: see mmc.txt +- sd-uhs-sdr25: see mmc.txt +- sd-uhs-sdr50: see mmc.txt +- cap-mmc-hw-reset: should exist if reset-names contains "hw". see mmc.txt +- non-removable: see mmc.txt + +Example: + + sd: sdhc@5a400000 { + compatible = "socionext,uniphier-sd-v2.91"; + reg = <0x5a400000 0x200>; + interrupts = <0 76 4>; + pinctrl-names = "default", "uhs"; + pinctrl-0 = <&pinctrl_sd>; + pinctrl-1 = <&pinctrl_sd_uhs>; + clocks = <&mio_clk 0>; + reset-names = "host", "bridge"; + resets = <&mio_rst 0>, <&mio_rst 3>; + dma-names = "rx-tx"; + dmas = <&dmac 4>; + bus-width = <4>; + cap-sd-highspeed; + sd-uhs-sdr12; + sd-uhs-sdr25; + sd-uhs-sdr50; + };