From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Fri, 08 Mar 2024 12:18:42 +0100 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by lore.white.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1riYFO-00Dd96-10 for lore@lore.pengutronix.de; Fri, 08 Mar 2024 12:18:42 +0100 Received: from bombadil.infradead.org ([2607:7c80:54:3::133]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1riYFK-0000Sf-6w for lore@pengutronix.de; Fri, 08 Mar 2024 12:18:42 +0100 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:To:In-Reply-To:References: Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Cc:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=yol91Cnt5mWwRwO1pZQ54fLjjoRPMlluiX8HZoJtYs8=; b=424Df4h+9Zhs4HN6cceZD3crBe gjNVAAScRt1ieWgcrfi8gHG45OdOgW2fQKeuYYPG3O/kvPiOJvs7aJ1VF5fg7tbhHnI/XHcZhl176 /cb+r6iVgd5rYMnUx8rO4oHgLdr5BaqPrk6iyYT26kU19wAroRtFTXGVTIrfYhlVArPLPNoBq7vJe 2TayDGrDoTK99C40AdeUoowVNxzeoO1pb05DQb+pKeN2ei7ehHzc5ACG8YPxr+1xsVilqJ0xpqHeA WZYGPFsMCDT3y4VdorqIl+CVUzw1sgAaV0WQiPl2FOklmwtJeA0EC7JCLSEmAVY8E6b3jXO4foORJ bxszPOAA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1riYEp-00000008vYz-2MEI; Fri, 08 Mar 2024 11:18:07 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1riYEd-00000008vQF-3O0G for barebox@lists.infradead.org; Fri, 08 Mar 2024 11:17:59 +0000 Received: from ptz.office.stw.pengutronix.de ([2a0a:edc0:0:900:1d::77] helo=ratatoskr.trumtrar.info) by metis.whiteo.stw.pengutronix.de with esmtp (Exim 4.92) (envelope-from ) id 1riYEY-0007Id-Lj for barebox@lists.infradead.org; Fri, 08 Mar 2024 12:17:50 +0100 From: Steffen Trumtrar Date: Fri, 08 Mar 2024 12:17:01 +0100 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20240308-v2024-02-0-topic-arasan-hs200-support-v1-3-6d50c90485f3@pengutronix.de> References: <20240308-v2024-02-0-topic-arasan-hs200-support-v1-0-6d50c90485f3@pengutronix.de> In-Reply-To: <20240308-v2024-02-0-topic-arasan-hs200-support-v1-0-6d50c90485f3@pengutronix.de> To: barebox@lists.infradead.org X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2423; i=s.trumtrar@pengutronix.de; h=from:subject:message-id; bh=1WDY0qtlK09395ul6nJXBmeyUwxXC/+GebfdGH2bwbE=; b=owGbwMvMwCUmvd38QH3grB+Mp9WSGFJffd57P9L62FtH7zqmJYWCeTVrOd70CYd8tbsVsk3tX 9lZpu/7O0pZGMS4GGTFFFki1x7S2Cz8WefL8fMMMHNYmUCGMHBxCsBE3pQxMszMmuqpxdl8h6mC u/ZX7LMfYbm3Th2a4yOtJbpu5t6EGyGMDFNU3GZILXx5/vDrhxl5x+bXnpFQZdicmD7hZcKO5Fx nFX4A X-Developer-Key: i=s.trumtrar@pengutronix.de; a=openpgp; fpr=59ADC228B313F32CF4C7CF001BB737C07F519AF8 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240308_031756_016523_E10D9D38 X-CRM114-Status: GOOD ( 12.64 ) X-BeenThere: barebox@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "barebox" X-SA-Exim-Connect-IP: 2607:7c80:54:3::133 X-SA-Exim-Mail-From: barebox-bounces+lore=pengutronix.de@lists.infradead.org X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on metis.whiteo.stw.pengutronix.de X-Spam-Level: X-Spam-Status: No, score=-5.1 required=4.0 tests=AWL,BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_NONE, T_SCC_BODY_TEXT_LINE autolearn=unavailable autolearn_force=no version=3.4.2 Subject: [PATCH 03/12] mci: arasan: implement 25MHz quirk for zynqmp X-SA-Exim-Version: 4.2.1 (built Wed, 08 May 2019 21:11:16 +0000) X-SA-Exim-Scanned: Yes (on metis.whiteo.stw.pengutronix.de) The Arasan on the zynqmp in version 8.9a doesn't meet the timing requirements at 25MHz. It works at 19MHz instead. Add the quirk from linux kernel v6.8-rc4. Signed-off-by: Steffen Trumtrar --- drivers/mci/arasan-sdhci.c | 28 +++++++++++++++++++++++++++- 1 file changed, 27 insertions(+), 1 deletion(-) diff --git a/drivers/mci/arasan-sdhci.c b/drivers/mci/arasan-sdhci.c index 59afac7372..cc1bad8b62 100644 --- a/drivers/mci/arasan-sdhci.c +++ b/drivers/mci/arasan-sdhci.c @@ -37,6 +37,12 @@ struct arasan_sdhci_host { /* Controller does not have CD wired and will not function normally without */ #define SDHCI_ARASAN_QUIRK_FORCE_CDTEST BIT(0) #define SDHCI_ARASAN_QUIRK_NO_1_8_V BIT(1) +/* + * Some of the Arasan variations might not have timing requirements + * met at 25MHz for Default Speed mode, those controllers work at + * 19MHz instead + */ +#define SDHCI_ARASAN_QUIRK_CLOCK_25_BROKEN BIT(2) }; static inline @@ -110,13 +116,30 @@ static int arasan_sdhci_init(struct mci_host *mci, struct device *dev) return 0; } +static void arasan_sdhci_set_clock(struct mci_host *mci, unsigned int clock) +{ + struct arasan_sdhci_host *host = to_arasan_sdhci_host(mci); + + if (host->quirks & SDHCI_ARASAN_QUIRK_CLOCK_25_BROKEN) { + /* + * Some of the Arasan variations might not have timing + * requirements met at 25MHz for Default Speed mode, + * those controllers work at 19MHz instead. + */ + if (clock == 25000000) + clock = (25000000 * 19) / 25; + } + + sdhci_set_clock(&host->sdhci, clock, host->sdhci.max_clk); +} + static void arasan_sdhci_set_ios(struct mci_host *mci, struct mci_ios *ios) { struct arasan_sdhci_host *host = to_arasan_sdhci_host(mci); u16 val; if (ios->clock) - sdhci_set_clock(&host->sdhci, ios->clock, host->sdhci.max_clk); + arasan_sdhci_set_clock(mci, ios->clock); sdhci_set_bus_width(&host->sdhci, ios->bus_width); @@ -243,6 +266,9 @@ static int arasan_sdhci_probe(struct device *dev) if (of_property_read_bool(np, "no-1-8-v")) arasan_sdhci->quirks |= SDHCI_ARASAN_QUIRK_NO_1_8_V; + if (of_device_is_compatible(np, "xlnx,zynqmp-8.9a")) + arasan_sdhci->quirks |= SDHCI_ARASAN_QUIRK_CLOCK_25_BROKEN; + arasan_sdhci->sdhci.base = IOMEM(iores->start); arasan_sdhci->sdhci.mci = mci; mci->send_cmd = arasan_sdhci_send_cmd; -- 2.40.1