From nobody Sat Feb 7 19:08:13 2026 Received: from azure-sdnproxy.icoremail.net (azure-sdnproxy.icoremail.net [207.46.229.174]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6C1BA228CB0; Fri, 9 Jan 2026 03:28:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=207.46.229.174 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767929309; cv=none; b=Wc1NOZnFLejjWD/Mm+OgajCpI0XoMLJulcyAvGy8fJzYqFjxvdCh92I6xD//tUVlXpcPP4K5zZQWwiyzxTsa6XRnCBL7wopHPMBau2ZTxkiKNjTiBpyidrrwSb2GoXbw3TewA5joDmHi9sw+y+RAA7GaVjNEO1N6HQpijh5MvQw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1767929309; c=relaxed/simple; bh=FwfsZDZmlFFk5kevB5TSB/JImhd2KFDCoj5ANics4vc=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Rj4+5YEBr5lUqKj4RCfWBU9aozpoysgDJspiN2sBjilh+cAys97AWt1rpvS5AiF+lZ5u/hvWZLs8lKSxYoxMy9OeA1EcQt+sHQQDRLnvv6tXttNNjtfamJ76Odcl/Vir8eL7FgG0H6L+P/v6MYrxNJ08dOtxo6NDIRBtrV3IyNs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com; spf=pass smtp.mailfrom=eswincomputing.com; arc=none smtp.client-ip=207.46.229.174 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=eswincomputing.com Received: from E0005182LT.eswin.cn (unknown [10.12.96.155]) by app1 (Coremail) with SMTP id TAJkCgBXUmrMdWBpN26SAA--.64703S2; Fri, 09 Jan 2026 11:28:13 +0800 (CST) From: hehuan1@eswincomputing.com To: adrian.hunter@intel.com, ulf.hansson@linaro.org, linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org Cc: ningyu@eswincomputing.com, linmin@eswincomputing.com, pinkesh.vaghela@einfochips.com, xuxiang@eswincomputing.com, hehuan1@eswincomputing.com Subject: [PATCH v1] mmc: sdhci-of-dwcmshc: fix init for AXI clock and DMA 128MB boundary Date: Fri, 9 Jan 2026 11:28:10 +0800 Message-Id: <20260109032810.204-1-hehuan1@eswincomputing.com> X-Mailer: git-send-email 2.31.1.windows.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: TAJkCgBXUmrMdWBpN26SAA--.64703S2 X-Coremail-Antispam: 1UD129KBjvJXoW7Ar1xXFW3Xr4fGrW7Gw4UJwb_yoW8CrWxpa 1ktF12kFW5GF4SgFyDAa1qva1agrs3W39rtrWfGw4FvanIyFWUtFy2ka4jyF1rGrWfC3Wf JF4vqry5CF12yaUanT9S1TB71UUUUUDqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9F14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26w1j6s0DM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVW0oVCq3wA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Gc CE3s1le2I262IYc4CY6c8Ij28IcVAaY2xG8wAqx4xG64xvF2IEw4CE5I8CrVC2j2WlYx0E 2Ix0cI8IcVAFwI0_Jr0_Jr4lYx0Ex4A2jsIE14v26r1j6r4UMcvjeVCFs4IE7xkEbVWUJV W8JwACjcxG0xvY0x0EwIxGrwACjI8F5VA0II8E6IAqYI8I648v4I1lw4CEc2x0rVAKj4xx MxkF7I0En4kS14v26r1q6r43MxkIecxEwVCm-wCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4 IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v26r106r1r MI8E67AF67kF1VAFwI0_Jw0_GFylIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJV WUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Jr0_Gr1lIxAIcVCF04k26cxKx2IYs7xG6r1j 6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Jr0_GrUvcS sGvfC2KfnxnUUI43ZEXa7VUbknY7UUUUU== X-CM-SenderInfo: 5khk3tzqr6v25zlqu0xpsx3x1qjou0bp/ Content-Type: text/plain; charset="utf-8" From: Huan He 1.Accessing the High-Speed registers requires the AXI clock to be enabled. 2.This DWC MSHC has a 128MB limitation where the data buffer size and start address must not exceed the 128MB boundary. Registering the missing 'adma_write_desc' callback function. Signed-off-by: Huan He --- drivers/mmc/host/sdhci-of-dwcmshc.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/host/sdhci-of-dwcmshc.c b/drivers/mmc/host/sdhci-o= f-dwcmshc.c index 51949cde0958..147f8046707f 100644 --- a/drivers/mmc/host/sdhci-of-dwcmshc.c +++ b/drivers/mmc/host/sdhci-of-dwcmshc.c @@ -1588,6 +1588,7 @@ static int eic7700_init(struct device *dev, struct sd= hci_host *host, struct dwcm { u32 emmc_caps =3D MMC_CAP2_NO_SD | MMC_CAP2_NO_SDIO; unsigned int val, hsp_int_status, hsp_pwr_ctrl; + static const char * const clk_ids[] =3D {"axi"}; struct of_phandle_args args; struct eic7700_priv *priv; struct regmap *hsp_regmap; @@ -1605,6 +1606,11 @@ static int eic7700_init(struct device *dev, struct s= dhci_host *host, struct dwcm return ret; } =20 + ret =3D dwcmshc_get_enable_other_clks(mmc_dev(host->mmc), dwc_priv, + ARRAY_SIZE(clk_ids), clk_ids); + if (ret) + return ret; + ret =3D of_parse_phandle_with_fixed_args(dev->of_node, "eswin,hsp-sp-csr"= , 2, 0, &args); if (ret) { dev_err(dev, "Fail to parse 'eswin,hsp-sp-csr' phandle (%d)\n", ret); @@ -1726,6 +1732,7 @@ static const struct sdhci_ops sdhci_dwcmshc_eic7700_o= ps =3D { .set_uhs_signaling =3D sdhci_eic7700_set_uhs_wrapper, .set_power =3D sdhci_set_power_and_bus_voltage, .irq =3D dwcmshc_cqe_irq_handler, + .adma_write_desc =3D dwcmshc_adma_write_desc, .platform_execute_tuning =3D sdhci_eic7700_executing_tuning, }; =20 --=20 2.25.1