From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F3D4EC3A5AA for ; Thu, 5 Sep 2019 07:40:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CC08F2168B for ; Thu, 5 Sep 2019 07:40:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=zoho.com header.i=zhouyanjie@zoho.com header.b="dUSE5lBy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732221AbfIEHko (ORCPT ); Thu, 5 Sep 2019 03:40:44 -0400 Received: from sender4-pp-o95.zoho.com ([136.143.188.95]:25521 "EHLO sender4-pp-o95.zoho.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730769AbfIEHkn (ORCPT ); Thu, 5 Sep 2019 03:40:43 -0400 ARC-Seal: i=1; a=rsa-sha256; t=1567669138; cv=none; d=zoho.com; s=zohoarc; b=bbyvOXRs9Tcc7kCLTdH0JOWp66Ask/teV8N0yAkNv48JTvvEUDgEhhnXrQodA10ECo4qAoybzPdOKU7HuRIINfedgwsGu7ddyEKPwKroxZtidaGrMcHd3UYHV0UhPMsglZPxPg6fDEZAhAZg2sM6+7bh4fg6a6usIRrJXGKh3Ng= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zoho.com; s=zohoarc; t=1567669138; h=Cc:Date:From:In-Reply-To:Message-ID:References:Subject:To:ARC-Authentication-Results; bh=I5Jl+lRwVJSmYK5N04Ftz1awAcGGAYjkgicsp1LfCyk=; b=T69p+TdOmZIXKkTIxE6daC9rT68eKWGSI7M4Qw1Gg4XZBkfAcuRPg5v7VTzt4JGiy8jBiPqh6UhPYs++ZpGj8ajN94RQ969HQR8cYmknPiX87lHtCxDAkZDGVzTwHekpqYq2QJjn2axa8ym7Ebpig37hjLD4B9obON1g/hAbC/4= ARC-Authentication-Results: i=1; mx.zoho.com; dkim=pass header.i=zoho.com; spf=pass smtp.mailfrom=zhouyanjie@zoho.com; dmarc=pass header.from= header.from= DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=zapps768; d=zoho.com; h=from:to:cc:subject:date:message-id:in-reply-to:references; b=EJYjrjBwwp5bhvwJq7W/6i9l8gYEDG/kQEHJI7Rm5ndzu6VEyqW7m5E/mdYOox0/BEqKrtqWtM8A Eu7A26gfmN9kVyprQG+uEeicCp8eJKNswoXiAnB2Wc+bg1kJKBgW DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1567669138; s=zm2019; d=zoho.com; i=zhouyanjie@zoho.com; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References; l=1944; bh=I5Jl+lRwVJSmYK5N04Ftz1awAcGGAYjkgicsp1LfCyk=; b=dUSE5lByWPHkV4P5NSPYSBiFnFagA3tbZyL/er/zkLkExddUjgqzZ3DiY8GHPhUR mtHNy0WggqLNGv2OiQZvNNBaODLDFfH6HThC8BQleFsPuiOTMDl0aLfxQPWQlNbCcvg m7AcmotbrC9O2ZKYH6GwKXmCOrYW9n3vE8q6GWnY= Received: from zhouyanjie-virtual-machine.localdomain (125.71.5.36 [125.71.5.36]) by mx.zohomail.com with SMTPS id 1567669136703108.89236573844028; Thu, 5 Sep 2019 00:38:56 -0700 (PDT) From: Zhou Yanjie To: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, ulf.hansson@linaro.org, paul.burton@mips.com, linus.walleij@linaro.org, paul@crapouillou.net, malat@debian.org, yuehaibing@huawei.com, ezequiel@collabora.com, robh+dt@kernel.org, mark.rutland@arm.com, syq@debian.org, jiaxun.yang@flygoat.com Subject: [PATCH 4/4] MMC: Ingenic: Add support for JZ4760 and support for LPM. Date: Thu, 5 Sep 2019 15:38:09 +0800 Message-Id: <1567669089-88693-5-git-send-email-zhouyanjie@zoho.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1567669089-88693-1-git-send-email-zhouyanjie@zoho.com> References: <1567669089-88693-1-git-send-email-zhouyanjie@zoho.com> X-ZohoMailClient: External Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 1.add support for probing mmc driver on the JZ4760 Soc from Ingenic. 2.add support for Low Power Mode of Ingenic's MMC/SD Controller. Signed-off-by: Zhou Yanjie --- drivers/mmc/host/jz4740_mmc.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index d6811a7..1e61f1b 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -43,6 +43,7 @@ #define JZ_REG_MMC_RES 0x34 #define JZ_REG_MMC_RXFIFO 0x38 #define JZ_REG_MMC_TXFIFO 0x3C +#define JZ_REG_MMC_LPM 0x40 #define JZ_REG_MMC_DMAC 0x44 #define JZ_MMC_STRPCL_EXIT_MULTIPLE BIT(7) @@ -102,11 +103,15 @@ #define JZ_MMC_DMAC_DMA_SEL BIT(1) #define JZ_MMC_DMAC_DMA_EN BIT(0) +#define JZ_MMC_LPM_DRV_RISING BIT(31) +#define JZ_MMC_LPM_LOW_POWER_MODE_EN BIT(0) + #define JZ_MMC_CLK_RATE 24000000 enum jz4740_mmc_version { JZ_MMC_JZ4740, JZ_MMC_JZ4725B, + JZ_MMC_JZ4760, JZ_MMC_JZ4780, }; @@ -858,6 +863,16 @@ static int jz4740_mmc_set_clock_rate(struct jz4740_mmc_host *host, int rate) } writew(div, host->base + JZ_REG_MMC_CLKRT); + + if (host->version >= JZ_MMC_JZ4760) { + if (real_rate > 25000000) + writel(JZ_MMC_LPM_DRV_RISING | + JZ_MMC_LPM_LOW_POWER_MODE_EN, + host->base + JZ_REG_MMC_LPM); + } else if (host->version >= JZ_MMC_JZ4725B) + writel(JZ_MMC_LPM_LOW_POWER_MODE_EN, + host->base + JZ_REG_MMC_LPM); + return real_rate; } @@ -935,6 +950,7 @@ static const struct mmc_host_ops jz4740_mmc_ops = { static const struct of_device_id jz4740_mmc_of_match[] = { { .compatible = "ingenic,jz4740-mmc", .data = (void *) JZ_MMC_JZ4740 }, { .compatible = "ingenic,jz4725b-mmc", .data = (void *)JZ_MMC_JZ4725B }, + { .compatible = "ingenic,jz4760-mmc", .data = (void *) JZ_MMC_JZ4760 }, { .compatible = "ingenic,jz4780-mmc", .data = (void *) JZ_MMC_JZ4780 }, {}, }; -- 2.7.4