From patchwork Thu May 16 04:45:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ravi Gunasekaran X-Patchwork-Id: 13665723 Received: from fllv0015.ext.ti.com (fllv0015.ext.ti.com [198.47.19.141]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DEA1721379; Thu, 16 May 2024 04:45:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=198.47.19.141 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715834753; cv=none; b=qPofv21pW8v9YYlQu+qOQYICgluLt6Mfk11msFyEvjKgtSBfEpkekR763c+STpEj0WkPT2sJ+V1sWCZeDvpMaW68lrtFczoOtwRRRu7+hkMxTrXxArg3gEdmsA1T2O65BFpLlj8xlci2mG/pxsQQg74G8NoPlLA9SniqbwW/Qg4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1715834753; c=relaxed/simple; bh=CeI7Nj7iYXEoMFAD+W6AENj+Ni8SVHaZgtCZBXnJKY4=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=BP3xuE/8kM/caanmzlBJoHp4DQ4YsMEfATikjUrSmF5vOvalKNv9HSeVUJPZIYYJmxrZXVbWoI6l0B4G/zKHYCyNaFj0s1bzWrXwjJS4ssd8KRhnoGvXRwxLhFmjF/S1HANd1XB+3whrGkh7EkOruznWovoHIYblittktBnKtdg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com; spf=pass smtp.mailfrom=ti.com; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b=hKhiBA/0; arc=none smtp.client-ip=198.47.19.141 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=ti.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=ti.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="hKhiBA/0" Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 44G4jk5V118944; Wed, 15 May 2024 23:45:46 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1715834746; bh=DXjLif0Hjv029aqYrs3Ya+OtUIaoG6yLYj0HMg+CA+c=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=hKhiBA/0q69Bi5t/m70w16CuSDS+M2Yc5lw8rRJ9O02iJCVYDE1zNLCEzVaEyhruM rEuXbe6YMzDInWY4wLpoiXUpiX2IyUgkEJMs0bAVen2X2RT2DvzZxENq6qD3ODf+UD Gl9V3B5i6iN0f6ThBT1y1D+Qwyxck4ymsC/5KEQE= Received: from DFLE100.ent.ti.com (dfle100.ent.ti.com [10.64.6.21]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 44G4jk3f053435 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Wed, 15 May 2024 23:45:46 -0500 Received: from DFLE113.ent.ti.com (10.64.6.34) by DFLE100.ent.ti.com (10.64.6.21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23; Wed, 15 May 2024 23:45:45 -0500 Received: from lelvsmtp6.itg.ti.com (10.180.75.249) by DFLE113.ent.ti.com (10.64.6.34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2507.23 via Frontend Transport; Wed, 15 May 2024 23:45:45 -0500 Received: from uda0500640.dal.design.ti.com (uda0500640.dhcp.ti.com [172.24.227.88]) by lelvsmtp6.itg.ti.com (8.15.2/8.15.2) with ESMTP id 44G4jbxq115324; Wed, 15 May 2024 23:45:43 -0500 From: Ravi Gunasekaran To: , , CC: , , , , Subject: [PATCH v3 2/2] usb: cdns3-ti: Add workaround for Errata i2409 Date: Thu, 16 May 2024 10:15:37 +0530 Message-ID: <20240516044537.16801-3-r-gunasekaran@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240516044537.16801-1-r-gunasekaran@ti.com> References: <20240516044537.16801-1-r-gunasekaran@ti.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 From: Roger Quadros TI USB2 PHY is known to have a lockup issue on very short suspend intervals. Enable the Suspend Residency quirk flag to workaround this as described in Errata i2409 [1]. [1] - https://www.ti.com/lit/er/sprz457h/sprz457h.pdf Signed-off-by: Roger Quadros Signed-off-by: Ravi Gunasekaran Acked-by: Peter Chen --- Change log: ---------- Changes since v2: ---------------- * No change Changes since v1: ---------------- * No change v2: https://lore.kernel.org/all/20240516042845.31211-1-r-gunasekaran@ti.com/ v1: https://lore.kernel.org/all/20240514092421.20897-1-r-gunasekaran@ti.com/#t drivers/usb/cdns3/cdns3-ti.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) diff --git a/drivers/usb/cdns3/cdns3-ti.c b/drivers/usb/cdns3/cdns3-ti.c index 5945c4b1e11f..cfabc12ee0e3 100644 --- a/drivers/usb/cdns3/cdns3-ti.c +++ b/drivers/usb/cdns3/cdns3-ti.c @@ -16,6 +16,7 @@ #include #include #include +#include "core.h" /* USB Wrapper register offsets */ #define USBSS_PID 0x0 @@ -85,6 +86,18 @@ static inline void cdns_ti_writel(struct cdns_ti *data, u32 offset, u32 value) writel(value, data->usbss + offset); } +static struct cdns3_platform_data cdns_ti_pdata = { + .quirks = CDNS3_DRD_SUSPEND_RESIDENCY_ENABLE, /* Errata i2409 */ +}; + +static const struct of_dev_auxdata cdns_ti_auxdata[] = { + { + .compatible = "cdns,usb3", + .platform_data = &cdns_ti_pdata, + }, + {}, +}; + static int cdns_ti_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -176,7 +189,7 @@ static int cdns_ti_probe(struct platform_device *pdev) reg |= USBSS_W1_PWRUP_RST; cdns_ti_writel(data, USBSS_W1, reg); - error = of_platform_populate(node, NULL, NULL, dev); + error = of_platform_populate(node, NULL, cdns_ti_auxdata, dev); if (error) { dev_err(dev, "failed to create children: %d\n", error); goto err;