From patchwork Thu Dec 16 12:57:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 12681089 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4050CC433FE for ; Thu, 16 Dec 2021 12:58:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237104AbhLPM57 (ORCPT ); Thu, 16 Dec 2021 07:57:59 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49598 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237089AbhLPM55 (ORCPT ); Thu, 16 Dec 2021 07:57:57 -0500 Received: from bhuna.collabora.co.uk (bhuna.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e3e3]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 932CDC061574; Thu, 16 Dec 2021 04:57:57 -0800 (PST) Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: kholk11) with ESMTPSA id E6C771F4628E DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=collabora.com; s=mail; t=1639659476; bh=4TdGbUGIeTVxOIguEjJvEZfyGK3EgCiTdErpnWEzqWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=atnacH+mBG+G5Tq9HQwafvLXg/nC8eiWi2MxeJIo8GRcFnYqpaVy7AiY6FXBqmNXP 7LOdvnTL7437yXU6tpolFxjase3HSdVyCFBQTis1SHV00mOh4zXwPXJawZrqs/Uz8S jRowMD3Xnohgzr7erUgrzGCqpvY2iAuMndkNCMeJlAdsSW/uSH2DQZMAUeBsFZu3aY OM5mK7LPANu/mt/qaRR7JCkzmK4WUd3wTqjPJXWOJ5ThA4bAMGIbWbpASM0E1PRg5p 2v+5FCN9Zl2mSzCfyYvelVdGT9Lz31ylktEq2XCpjR9KTNUnhDCHKvwcDRvbZ4L9JZ 4rfmqDhj8r4vQ== From: AngeloGioacchino Del Regno To: chaotian.jing@mediatek.com Cc: ulf.hansson@linaro.org, matthias.bgg@gmail.com, linux-mmc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org, kernel@collabora.com, AngeloGioacchino Del Regno Subject: [PATCH 3/5] mmc: mtk-sd: Take action for no-sdio device-tree parameter Date: Thu, 16 Dec 2021 13:57:46 +0100 Message-Id: <20211216125748.179602-3-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211216125748.179602-1-angelogioacchino.delregno@collabora.com> References: <20211216125748.179602-1-angelogioacchino.delregno@collabora.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org This driver was unconditionally enabling support for SDIO mode, but we do have a generic "no-sdio" DT parameter that sets caps2 MMC_CAP2_NO_SDIO. Modify the HW initialization sequence to enable SDIO support only if it hasn't been explicitly disabled in device-tree. Signed-off-by: AngeloGioacchino Del Regno --- drivers/mmc/host/mtk-sd.c | 19 ++++++++++++------- 1 file changed, 12 insertions(+), 7 deletions(-) diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index d067636434ca..f08695e52601 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -1638,6 +1638,7 @@ static void msdc_init_hw(struct msdc_host *host) { u32 val; u32 tune_reg = host->dev_comp->pad_tune_reg; + struct mmc_host *mmc = mmc_from_priv(host); if (host->reset) { reset_control_assert(host->reset); @@ -1743,14 +1744,18 @@ static void msdc_init_hw(struct msdc_host *host) MSDC_PAD_TUNE_RXDLYSEL); } - /* Configure to enable SDIO mode. - * it's must otherwise sdio cmd5 failed - */ - sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + if (mmc->caps2 & MMC_CAP2_NO_SDIO) { + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIO); + sdr_clr_bits(host->base + MSDC_INTEN, MSDC_INTEN_SDIOIRQ); + sdr_clr_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } else { + /* Configure to enable SDIO mode, otherwise SDIO CMD5 fails */ + sdr_set_bits(host->base + SDC_CFG, SDC_CFG_SDIO); - /* Config SDIO device detect interrupt function */ - sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); - sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + /* Config SDIO device detect interrupt function */ + sdr_clr_bits(host->base + SDC_CFG, SDC_CFG_SDIOIDE); + sdr_set_bits(host->base + SDC_ADV_CFG0, SDC_DAT1_IRQ_TRIGGER); + } /* Configure to default data timeout */ sdr_set_field(host->base + SDC_CFG, SDC_CFG_DTOC, 3);