From mboxrd@z Thu Jan 1 00:00:00 1970 Delivery-date: Mon, 11 May 2026 14:33:51 +0200 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 1wMPpX-000YMQ-2v for lore@lore.pengutronix.de; Mon, 11 May 2026 14:33:51 +0200 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 1wMPpV-0004wU-F3 for lore@pengutronix.de; Mon, 11 May 2026 14:33:51 +0200 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Cc: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:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=W0NLmv9Yvk77B52Ay8QbD5Ntcyz2ZXvmolQerW+iae0=; b=OPT7e3Hr9QpzxvAOtKV3Ml1+C0 VYGmNY9crj6NmbhLagDbxeENB74Bln9jQLutaCu6SUaVQ6Au+iald+xqsQWxqujszeIXnh2axpuZL XwvxxbaKEVZEL75/YCGAsYTeHO1GQMUUiwQeP1i8KtaFCSRny9hauqzFkm9pDHTb+qEjWghO9FNTH tvgxSRG4b2prXLC7p7M/vexq+nILJFU0gbTZircIUVfkatCKULAULO9lydU057gh72jmlydg6maqD OYHzfY27PvyjgJtHEu+sFZmmO1Az/tWRwAfeFCrdGuCftjtEyCsZabGepM0UOsFfewQj59uVf7gze YiS4zAWA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMPo7-0000000DXvY-30pX; Mon, 11 May 2026 12:32:23 +0000 Received: from metis.whiteo.stw.pengutronix.de ([2a0a:edc0:2:b01:1d::104]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1wMPo5-0000000DXth-0znh for barebox@lists.infradead.org; Mon, 11 May 2026 12:32:22 +0000 Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1wMPo3-0004Z7-IL; Mon, 11 May 2026 14:32:19 +0200 Received: from dude02.red.stw.pengutronix.de ([2a0a:edc0:0:1101:1d::28]) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.96) (envelope-from ) id 1wMPo2-000Fhs-1Q; Mon, 11 May 2026 14:32:19 +0200 Received: from [::1] (helo=dude02.red.stw.pengutronix.de) by dude02.red.stw.pengutronix.de with esmtp (Exim 4.98.2) (envelope-from ) id 1wMPQc-00000008pO6-1BwW; Mon, 11 May 2026 14:08:06 +0200 From: Sascha Hauer Date: Mon, 11 May 2026 14:08:05 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260511-rockchip-emmc-hs400-v1-10-515fb6d20e12@pengutronix.de> References: <20260511-rockchip-emmc-hs400-v1-0-515fb6d20e12@pengutronix.de> In-Reply-To: <20260511-rockchip-emmc-hs400-v1-0-515fb6d20e12@pengutronix.de> To: BAREBOX X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=ed25519-sha256; t=1778501286; l=1785; i=s.hauer@pengutronix.de; s=20230412; h=from:subject:message-id; bh=AqG3QVTJuhM9fMI5PpVufXpm0oMnyL8gOSwmfKJd+70=; b=zhtN5YGbxartlYnCHODUmbYIuQLYyRjSZ1QpmbkYUXKV9qt1NXajVEMSYT8N8BGnaMD2SG4+K Ri6Q0/lcfnbAkjLKqHrYSZ7sUVnbntAPfayAEwokf13T54exYZ78Fs0 X-Developer-Key: i=s.hauer@pengutronix.de; a=ed25519; pk=4kuc9ocmECiBJKWxYgqyhtZOHj5AWi7+d0n/UjhkwTg= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260511_053221_280859_515653DD X-CRM114-Status: UNSURE ( 9.68 ) X-CRM114-Notice: Please train this message. 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: , Cc: "Claude Opus 4.7" 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 autolearn=ham autolearn_force=no version=3.4.2 Subject: [PATCH 10/10] mci: sdhci: rockchip: support HS400 Enhanced Strobe 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) Implement the hs400_enhanced_strobe op so the dwcmshc controller samples on the eMMC strobe instead of the source clock when in HS400ES. The bit lives at EMMC_CONTROL[8] (DWCMSHC_ENHANCED_STROBE) in the same vendor area register that already holds CARD_IS_EMMC. Assisted-by: Claude Opus 4.7 Signed-off-by: Sascha Hauer --- drivers/mci/rockchip-dwcmshc-sdhci.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/mci/rockchip-dwcmshc-sdhci.c b/drivers/mci/rockchip-dwcmshc-sdhci.c index 3aa3f12930..89bc4781b4 100644 --- a/drivers/mci/rockchip-dwcmshc-sdhci.c +++ b/drivers/mci/rockchip-dwcmshc-sdhci.c @@ -19,6 +19,7 @@ #define DWCMSHC_HOST_CTRL3 0x508 #define DWCMSHC_EMMC_CONTROL 0x52c #define DWCMSHC_CARD_IS_EMMC BIT(0) +#define DWCMSHC_ENHANCED_STROBE BIT(8) #define DWCMSHC_EMMC_ATCTRL 0x540 /* Rockchip specific Registers */ @@ -363,12 +364,24 @@ static int rk_sdhci_execute_tuning(struct mci_host *mci, u32 opcode) return sdhci_execute_tuning(&host->sdhci, opcode); } +static void rk_sdhci_hs400_enhanced_strobe(struct mci_host *mci, + struct mci_ios *ios) +{ + struct rk_sdhci_host *host = to_rk_sdhci_host(mci); + u32 val; + + val = sdhci_read32(&host->sdhci, DWCMSHC_EMMC_CONTROL); + val |= DWCMSHC_ENHANCED_STROBE; + sdhci_write32(&host->sdhci, DWCMSHC_EMMC_CONTROL, val); +} + static const struct mci_ops rk_sdhci_ops = { .send_cmd = rk_sdhci_send_cmd, .set_ios = rk_sdhci_set_ios, .init = rk_sdhci_init, .card_present = rk_sdhci_card_present, .execute_tuning = rk_sdhci_execute_tuning, + .hs400_enhanced_strobe = rk_sdhci_hs400_enhanced_strobe, }; static int rk_sdhci_probe(struct device *dev) -- 2.47.3