From patchwork Wed Nov 25 21:30:01 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wolfram Sang X-Patchwork-Id: 11932247 X-Patchwork-Delegate: geert@linux-m68k.org 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=-16.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,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 ACFE2C56202 for ; Wed, 25 Nov 2020 21:30:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5C6C8206E0 for ; Wed, 25 Nov 2020 21:30:35 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="oBJlt/8B" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732181AbgKYVaR (ORCPT ); Wed, 25 Nov 2020 16:30:17 -0500 Received: from www.zeus03.de ([194.117.254.33]:50290 "EHLO mail.zeus03.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732193AbgKYVaQ (ORCPT ); Wed, 25 Nov 2020 16:30:16 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=simple; d=sang-engineering.com; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=k1; bh=rdfbV7Lr2bOWPq aYvs96W61a1TNaIaXNyfLaNfizkOk=; b=oBJlt/8B07U9npgKc9G4jW3l5PhSdd V8M7h01hAyc0FAB+B7iex0rRufvir8wN9otycWXo9XBqxjq3I2mbEItqX5tKJuT5 cFhMzii8s2CkB+oPvCsoI4pttLv13C4+kx8xjgRAexJHMHy5zQWAzdagOxrVeQ3X vUU/G5JuJ0duc= Received: (qmail 3441528 invoked from network); 25 Nov 2020 22:30:15 +0100 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 25 Nov 2020 22:30:15 +0100 X-UD-Smtp-Session: l3s3148p1@+TAQIvW0kr8gAwDPXwZjAA625bO7DiyS From: Wolfram Sang To: linux-mmc@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda , Wolfram Sang , Wolfram Sang Subject: [PATCH 3/3] mmc: renesas_sdhi: populate hook for longer busy_wait Date: Wed, 25 Nov 2020 22:30:01 +0100 Message-Id: <20201125213001.15003-4-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20201125213001.15003-1-wsa+renesas@sang-engineering.com> References: <20201125213001.15003-1-wsa+renesas@sang-engineering.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Wolfram Sang Make use of the EXTOP bit in R-Car Gen3 SoCs to have a twice as large busy wait duration. Signed-off-by: Wolfram Sang --- drivers/mmc/host/renesas_sdhi_core.c | 20 ++++++++++++++++++++ drivers/mmc/host/tmio_mmc.h | 2 ++ 2 files changed, 22 insertions(+) diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 153767054c05..38f028e70633 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -561,6 +561,7 @@ static int renesas_sdhi_prepare_hs400_tuning(struct mmc_host *mmc, struct mmc_io static void renesas_sdhi_reset(struct tmio_mmc_host *host) { struct renesas_sdhi *priv = host_to_priv(host); + u16 val; if (priv->scc_ctl) { renesas_sdhi_disable_scc(host->mmc); @@ -573,6 +574,21 @@ static void renesas_sdhi_reset(struct tmio_mmc_host *host) } sd_ctrl_write32_as_16_and_16(host, CTL_IRQ_MASK, TMIO_MASK_INIT_RCAR2); + + if (sd_ctrl_read16(host, CTL_VERSION) >= SDHI_VER_GEN3_SD) { + val = sd_ctrl_read16(host, CTL_SD_MEM_CARD_OPT); + val |= CARD_OPT_EXTOP; + sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, val); + } +} + +static unsigned int renesas_sdhi_gen3_get_cycles(struct tmio_mmc_host *host) +{ + u16 num, val = sd_ctrl_read16(host, CTL_SD_MEM_CARD_OPT); + + num = (val & CARD_OPT_TOP_MASK) >> CARD_OPT_TOP_SHIFT; + return 1 << ((val & CARD_OPT_EXTOP ? 14 : 13) + num); + } #define SH_MOBILE_SDHI_MIN_TAP_ROW 3 @@ -1067,6 +1083,10 @@ int renesas_sdhi_probe(struct platform_device *pdev, quirks->hs400_calib_table + 1); } + /* these have an EXTOP bit */ + if (ver >= SDHI_VER_GEN3_SD) + host->get_timeout_cycles = renesas_sdhi_gen3_get_cycles; + /* Enable tuning iff we have an SCC and a supported mode */ if (of_data && of_data->scc_offset && (host->mmc->caps & MMC_CAP_UHS_SDR104 || diff --git a/drivers/mmc/host/tmio_mmc.h b/drivers/mmc/host/tmio_mmc.h index f60559bc413a..784fa6ed5843 100644 --- a/drivers/mmc/host/tmio_mmc.h +++ b/drivers/mmc/host/tmio_mmc.h @@ -82,7 +82,9 @@ /* Definitions for values the CTL_SD_MEM_CARD_OPT register can take */ #define CARD_OPT_TOP_MASK 0xf0 #define CARD_OPT_TOP_SHIFT 4 +#define CARD_OPT_EXTOP BIT(9) /* first appeared on R-Car Gen3 SDHI */ #define CARD_OPT_WIDTH8 BIT(13) +#define CARD_OPT_ALWAYS1 BIT(14) #define CARD_OPT_WIDTH BIT(15) /* Definitions for values the CTL_SDIO_STATUS register can take */