From nobody Wed Feb 11 02:26:50 2026 Received: from out-180.mta1.migadu.com (out-180.mta1.migadu.com [95.215.58.180]) (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 7342A15357A for ; Mon, 22 Apr 2024 18:58:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713812294; cv=none; b=TQed2B/BKhDrjGcxFk+5kom3rNttMl1AZbcYTf2+2GGPwMQ/G9lA3YTu8wNY0tpwWyJhrsfMFFrQmjzgAW2iTNnakDyWXzVIZ0C4uBQ23QuBqU74uyZNbHstMUB4C/Iw5sjppEnGMyuF3mY194HzrX11UWifRqH7yau31H6QXag= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713812294; c=relaxed/simple; bh=4BrNoPwKBXYaMJhkzIKOVpin06weeAB2LUobZt4RwTQ=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Sr5XOI7sw3Qwj6gL9myNDbAln7yzXauxIm2taTJ6BurQmrln3rbXvi+tMUh+zvWfxqIGHwLswfxlaeqlnr7XZEtiYPWdXCmR/WfpM/Wo7TXNZf//9+C/G3bZbyEvTYKBkJLHevzhIW8yQEqHQLiYAVj919q4ESTHuby7eXSuz7g= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=CDBgI7nu; arc=none smtp.client-ip=95.215.58.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="CDBgI7nu" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1713812290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=2nEfY1XozlY3i97oqjNfAQ99IopkjONdMTRbrJqH5LA=; b=CDBgI7nuTp0UNXJIVK/kq2arWUCNLXgS4+jEt/704hzJd4qK4VS51xL1oEtZ/KPZyINryD 24BxU+VQAOYtFmMFqHKgQu0TIcIzRd0EYODCgU5eVMWQRvmNqLY61QGLWwvNpBnDYpVWLS uEErXji48kJqSSY/+DOxA6CqHe2Jl28= From: Sean Anderson To: Laurent Pinchart , linux-phy@lists.infradead.org Cc: Vinod Koul , linux-kernel@vger.kernel.org, Michal Simek , linux-arm-kernel@lists.infradead.org, Kishon Vijay Abraham I , Sean Anderson Subject: [PATCH 1/3] phy: zynqmp: Store instance instead of type Date: Mon, 22 Apr 2024 14:58:01 -0400 Message-Id: <20240422185803.3575319-2-sean.anderson@linux.dev> In-Reply-To: <20240422185803.3575319-1-sean.anderson@linux.dev> References: <20240422185803.3575319-1-sean.anderson@linux.dev> 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-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" The phy "type" is just the combination of protocol and instance, and is never used apart from that. Store the instance directly, instead of converting to a type first. No functional change intended. Signed-off-by: Sean Anderson --- drivers/phy/xilinx/phy-zynqmp.c | 107 +++++++------------------------- 1 file changed, 24 insertions(+), 83 deletions(-) diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqm= p.c index f72c5257d712..b507ed4c3053 100644 --- a/drivers/phy/xilinx/phy-zynqmp.c +++ b/drivers/phy/xilinx/phy-zynqmp.c @@ -146,22 +146,6 @@ /* Total number of controllers */ #define CONTROLLERS_PER_LANE 5 =20 -/* Protocol Type parameters */ -#define XPSGTR_TYPE_USB0 0 /* USB controller 0 */ -#define XPSGTR_TYPE_USB1 1 /* USB controller 1 */ -#define XPSGTR_TYPE_SATA_0 2 /* SATA controller lane 0 */ -#define XPSGTR_TYPE_SATA_1 3 /* SATA controller lane 1 */ -#define XPSGTR_TYPE_PCIE_0 4 /* PCIe controller lane 0 */ -#define XPSGTR_TYPE_PCIE_1 5 /* PCIe controller lane 1 */ -#define XPSGTR_TYPE_PCIE_2 6 /* PCIe controller lane 2 */ -#define XPSGTR_TYPE_PCIE_3 7 /* PCIe controller lane 3 */ -#define XPSGTR_TYPE_DP_0 8 /* Display Port controller lane 0 */ -#define XPSGTR_TYPE_DP_1 9 /* Display Port controller lane 1 */ -#define XPSGTR_TYPE_SGMII0 10 /* Ethernet SGMII controller 0 */ -#define XPSGTR_TYPE_SGMII1 11 /* Ethernet SGMII controller 1 */ -#define XPSGTR_TYPE_SGMII2 12 /* Ethernet SGMII controller 2 */ -#define XPSGTR_TYPE_SGMII3 13 /* Ethernet SGMII controller 3 */ - /* Timeout values */ #define TIMEOUT_US 1000 =20 @@ -184,7 +168,8 @@ struct xpsgtr_ssc { /** * struct xpsgtr_phy - representation of a lane * @phy: pointer to the kernel PHY device - * @type: controller which uses this lane + * @instance: instance of the protocol type (such as the lane within a + * protocol, or the USB/Ethernet controller) * @lane: lane number * @protocol: protocol in which the lane operates * @skip_phy_init: skip phy_init() if true @@ -193,7 +178,7 @@ struct xpsgtr_ssc { */ struct xpsgtr_phy { struct phy *phy; - u8 type; + u8 instance; u8 lane; u8 protocol; bool skip_phy_init; @@ -330,8 +315,8 @@ static int xpsgtr_wait_pll_lock(struct phy *phy) =20 if (ret =3D=3D -ETIMEDOUT) dev_err(gtr_dev->dev, - "lane %u (type %u, protocol %u): PLL lock timeout\n", - gtr_phy->lane, gtr_phy->type, gtr_phy->protocol); + "lane %u (protocol %u, instance %u): PLL lock timeout\n", + gtr_phy->lane, gtr_phy->protocol, gtr_phy->instance); =20 return ret; } @@ -643,8 +628,7 @@ static int xpsgtr_phy_power_on(struct phy *phy) * cumulating waits for both lanes. The user is expected to initialize * lane 0 last. */ - if (gtr_phy->protocol !=3D ICM_PROTOCOL_DP || - gtr_phy->type =3D=3D XPSGTR_TYPE_DP_0) + if (gtr_phy->protocol !=3D ICM_PROTOCOL_DP || !gtr_phy->instance) ret =3D xpsgtr_wait_pll_lock(phy); =20 return ret; @@ -674,73 +658,33 @@ static const struct phy_ops xpsgtr_phyops =3D { * OF Xlate Support */ =20 -/* Set the lane type and protocol based on the PHY type and instance numbe= r. */ +/* Set the lane protocol and instance based on the PHY type and instance n= umber. */ static int xpsgtr_set_lane_type(struct xpsgtr_phy *gtr_phy, u8 phy_type, unsigned int phy_instance) { unsigned int num_phy_types; - const int *phy_types; =20 switch (phy_type) { - case PHY_TYPE_SATA: { - static const int types[] =3D { - XPSGTR_TYPE_SATA_0, - XPSGTR_TYPE_SATA_1, - }; - - phy_types =3D types; - num_phy_types =3D ARRAY_SIZE(types); + case PHY_TYPE_SATA: + num_phy_types =3D 2; gtr_phy->protocol =3D ICM_PROTOCOL_SATA; break; - } - case PHY_TYPE_USB3: { - static const int types[] =3D { - XPSGTR_TYPE_USB0, - XPSGTR_TYPE_USB1, - }; - - phy_types =3D types; - num_phy_types =3D ARRAY_SIZE(types); + case PHY_TYPE_USB3: + num_phy_types =3D 2; gtr_phy->protocol =3D ICM_PROTOCOL_USB; break; - } - case PHY_TYPE_DP: { - static const int types[] =3D { - XPSGTR_TYPE_DP_0, - XPSGTR_TYPE_DP_1, - }; - - phy_types =3D types; - num_phy_types =3D ARRAY_SIZE(types); + case PHY_TYPE_DP: + num_phy_types =3D 2; gtr_phy->protocol =3D ICM_PROTOCOL_DP; break; - } - case PHY_TYPE_PCIE: { - static const int types[] =3D { - XPSGTR_TYPE_PCIE_0, - XPSGTR_TYPE_PCIE_1, - XPSGTR_TYPE_PCIE_2, - XPSGTR_TYPE_PCIE_3, - }; - - phy_types =3D types; - num_phy_types =3D ARRAY_SIZE(types); + case PHY_TYPE_PCIE: + num_phy_types =3D 4; gtr_phy->protocol =3D ICM_PROTOCOL_PCIE; break; - } - case PHY_TYPE_SGMII: { - static const int types[] =3D { - XPSGTR_TYPE_SGMII0, - XPSGTR_TYPE_SGMII1, - XPSGTR_TYPE_SGMII2, - XPSGTR_TYPE_SGMII3, - }; - - phy_types =3D types; - num_phy_types =3D ARRAY_SIZE(types); + case PHY_TYPE_SGMII: + num_phy_types =3D 4; gtr_phy->protocol =3D ICM_PROTOCOL_SGMII; break; - } default: return -EINVAL; } @@ -748,7 +692,7 @@ static int xpsgtr_set_lane_type(struct xpsgtr_phy *gtr_= phy, u8 phy_type, if (phy_instance >=3D num_phy_types) return -EINVAL; =20 - gtr_phy->type =3D phy_types[phy_instance]; + gtr_phy->instance =3D phy_instance; return 0; } =20 @@ -756,14 +700,11 @@ static int xpsgtr_set_lane_type(struct xpsgtr_phy *gt= r_phy, u8 phy_type, * Valid combinations of controllers and lanes (Interconnect Matrix). */ static const unsigned int icm_matrix[NUM_LANES][CONTROLLERS_PER_LANE] =3D { - { XPSGTR_TYPE_PCIE_0, XPSGTR_TYPE_SATA_0, XPSGTR_TYPE_USB0, - XPSGTR_TYPE_DP_1, XPSGTR_TYPE_SGMII0 }, - { XPSGTR_TYPE_PCIE_1, XPSGTR_TYPE_SATA_1, XPSGTR_TYPE_USB0, - XPSGTR_TYPE_DP_0, XPSGTR_TYPE_SGMII1 }, - { XPSGTR_TYPE_PCIE_2, XPSGTR_TYPE_SATA_0, XPSGTR_TYPE_USB0, - XPSGTR_TYPE_DP_1, XPSGTR_TYPE_SGMII2 }, - { XPSGTR_TYPE_PCIE_3, XPSGTR_TYPE_SATA_1, XPSGTR_TYPE_USB1, - XPSGTR_TYPE_DP_0, XPSGTR_TYPE_SGMII3 } + /* PCIe, SATA, USB, DP, SGMII */ + { 0, 0, 0, 1, 0 }, + { 1, 1, 0, 0, 1 }, + { 2, 0, 0, 1, 2 }, + { 3, 1, 1, 0, 3 }, }; =20 /* Translate OF phandle and args to PHY instance. */ @@ -818,7 +759,7 @@ static struct phy *xpsgtr_xlate(struct device *dev, * is allowed to operate on the lane. */ for (i =3D 0; i < CONTROLLERS_PER_LANE; i++) { - if (icm_matrix[phy_lane][i] =3D=3D gtr_phy->type) + if (icm_matrix[phy_lane][i] =3D=3D gtr_phy->instance) return gtr_phy->phy; } =20 --=20 2.35.1.1320.gc452695387.dirty From nobody Wed Feb 11 02:26:50 2026 Received: from out-189.mta1.migadu.com (out-189.mta1.migadu.com [95.215.58.189]) (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 0C4DA1552E0 for ; Mon, 22 Apr 2024 18:58:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.189 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713812295; cv=none; b=MqzPMrYImyo5WUacmdjnJDqA0yG6E70oEx2JmXuAEjjwK6WrxZ4YOHkmlPUq0odHeY5uZdoLMie5YVgGujk2/5idACi8F6P0S4imDJ3UomUmSrN4ZQeBKlhr/8ZOz+9ZOi91dG7PblW+x1NKG4oorccdq5NmrRM9InuDyaYrURk= ARC-Message-Signature: i=1; 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DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1713812292; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=l0jxaPV6Y3HOhLaJSxMJEdsj1DNm8Hvs/A17Ws337Lo=; b=uCHaCjGqVCKxdnL8akAeXt/gf1cmbM6CrS64Bto5sd6LkQN2GIvy5USUvU579AfNIW39+S atFAOlQX2azeVi65ZXVrGEhYy48Y8pdsHHejitjwjmH9SvN+1Au3zc+0j1FJAMkR5otDN5 7gZIqExtajv0USY/SZMZccTWNjuBx7I= From: Sean Anderson To: Laurent Pinchart , linux-phy@lists.infradead.org Cc: Vinod Koul , linux-kernel@vger.kernel.org, Michal Simek , linux-arm-kernel@lists.infradead.org, Kishon Vijay Abraham I , Sean Anderson Subject: [PATCH 2/3] phy: zynqmp: Don't wait for PLL lock on nonzero PCIe lanes Date: Mon, 22 Apr 2024 14:58:02 -0400 Message-Id: <20240422185803.3575319-3-sean.anderson@linux.dev> In-Reply-To: <20240422185803.3575319-1-sean.anderson@linux.dev> References: <20240422185803.3575319-1-sean.anderson@linux.dev> 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-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Similarly to DisplayPort, nonzero PCIe lanes never achieve PLL lock [1]. Don't wait for them. Signed-off-by: Sean Anderson --- Maybe it's actually that only the final lane configured locks? I haven't tested this out. drivers/phy/xilinx/phy-zynqmp.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqm= p.c index b507ed4c3053..08c88dcd7799 100644 --- a/drivers/phy/xilinx/phy-zynqmp.c +++ b/drivers/phy/xilinx/phy-zynqmp.c @@ -624,11 +624,13 @@ static int xpsgtr_phy_power_on(struct phy *phy) if (!xpsgtr_phy_init_required(gtr_phy)) return ret; /* - * Wait for the PLL to lock. For DP, only wait on DP0 to avoid - * cumulating waits for both lanes. The user is expected to initialize - * lane 0 last. + * Wait for the PLL to lock. For DP and PCIe, only wait on instance 0 + * to avoid cumulative waits for both lanes. The user is expected to + * initialize lane 0 last. */ - if (gtr_phy->protocol !=3D ICM_PROTOCOL_DP || !gtr_phy->instance) + if ((gtr_phy->protocol !=3D ICM_PROTOCOL_DP && + gtr_phy->protocol !=3D ICM_PROTOCOL_PCIE) || + !gtr_phy->instance) ret =3D xpsgtr_wait_pll_lock(phy); =20 return ret; --=20 2.35.1.1320.gc452695387.dirty From nobody Wed Feb 11 02:26:50 2026 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (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 69D1315530D for ; Mon, 22 Apr 2024 18:58:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713812297; cv=none; b=Bukpf8hWjPI6BNLIUjQ5UxB27b0a2n7HEwCEGzznsyP3ujQ1dE+rSr8mIqZRM+0yFFrplpGvIKw5Z5YP9UEJnau7u/iJYX5ivHBS0ZQT/cOqAvuJDrEZ+RmIL67A/3donab7DV7PElCnyjnA2i+h067iYabz3qNV3oohCYx2Y+o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713812297; c=relaxed/simple; bh=ucYZ+loFeMa2/Su14r82tDEgNbJTHjFpdGT6zZIFWKk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=RxGzns2mFHtmxpzm7f5zBCvRgsRNrt4uPZteKfmvhA+wu6FrcJtAyjuUZ0EESneFYMgzsCTCVrBsvMWaoRxPq/+fE6VtUhJiKUpBLeV7w/iHHgHF0uKSe5RQPYSjQLWMOwbl3Y753GoAoccPTXW/xNkTWQBFxOqlpoOFUcl281Q= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=sC/0mPu8; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="sC/0mPu8" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1713812293; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=QieHunxza7oONNqDvj8FAilmUbNuLii0kfErB3NoZW4=; b=sC/0mPu8+v9KnEygO9w7oUbzkZXNLGmM3vEaXpON0arLdxLJlMX8Xoi+PrJOVQxDNhAkti ITyBwp5vF1T2bA1wh1hr6vDoPFmAq7VB7RBxNk2tullNtGozKvjtrU3Kq3P6Viiqzvhcuf 6WTCn+k2NPi82cVAvvnYWx0FdtbdsYk= From: Sean Anderson To: Laurent Pinchart , linux-phy@lists.infradead.org Cc: Vinod Koul , linux-kernel@vger.kernel.org, Michal Simek , linux-arm-kernel@lists.infradead.org, Kishon Vijay Abraham I , Sean Anderson Subject: [PATCH 3/3] phy: zynqmp: Add debugfs support Date: Mon, 22 Apr 2024 14:58:03 -0400 Message-Id: <20240422185803.3575319-4-sean.anderson@linux.dev> In-Reply-To: <20240422185803.3575319-1-sean.anderson@linux.dev> References: <20240422185803.3575319-1-sean.anderson@linux.dev> 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-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset="utf-8" Add support for printing some basic status information to debugfs. This is helpful when debugging phy consumers to make sure they are configuring the phy appropriately. Signed-off-by: Sean Anderson --- drivers/phy/xilinx/phy-zynqmp.c | 54 +++++++++++++++++++++++++++++++++ 1 file changed, 54 insertions(+) diff --git a/drivers/phy/xilinx/phy-zynqmp.c b/drivers/phy/xilinx/phy-zynqm= p.c index 08c88dcd7799..e2e86943e9f3 100644 --- a/drivers/phy/xilinx/phy-zynqmp.c +++ b/drivers/phy/xilinx/phy-zynqmp.c @@ -13,6 +13,7 @@ */ =20 #include +#include #include #include #include @@ -122,6 +123,15 @@ #define ICM_PROTOCOL_DP 0x4 #define ICM_PROTOCOL_SGMII 0x5 =20 +static const char *const xpsgtr_icm_str[] =3D { + [ICM_PROTOCOL_PD] =3D "powered down", + [ICM_PROTOCOL_PCIE] =3D "PCIe", + [ICM_PROTOCOL_SATA] =3D "SATA", + [ICM_PROTOCOL_USB] =3D "USB", + [ICM_PROTOCOL_DP] =3D "DisplayPort", + [ICM_PROTOCOL_SGMII] =3D "SGMII", +}; + /* Test Mode common reset control parameters */ #define TM_CMN_RST 0x10018 #define TM_CMN_RST_EN 0x1 @@ -768,6 +778,48 @@ static struct phy *xpsgtr_xlate(struct device *dev, return ERR_PTR(-EINVAL); } =20 +/* + * DebugFS + */ + +static int xpsgtr_status_read(struct seq_file *seq, void *data) +{ + struct xpsgtr_phy *gtr_phy =3D seq->private; + struct clk *clk; + u32 pll_status; + + mutex_lock(>r_phy->phy->mutex); + pll_status =3D xpsgtr_read_phy(gtr_phy, L0_PLL_STATUS_READ_1); + clk =3D gtr_phy->dev->clk[gtr_phy->refclk]; + + seq_printf(seq, "Lane: %u\n", gtr_phy->lane); + seq_printf(seq, "Protocol: %s\n", + xpsgtr_icm_str[gtr_phy->protocol]); + seq_printf(seq, "Instance: %u\n", gtr_phy->instance); + seq_printf(seq, "Reference clock: %u (%pC)\n", gtr_phy->refclk, clk); + seq_printf(seq, "Reference rate: %lu\n", clk_get_rate(clk)); + seq_printf(seq, "PLL locked: %s\n", + pll_status & PLL_STATUS_LOCKED ? "yes" : "no"); + + mutex_unlock(>r_phy->phy->mutex); + return 0; +} + +static int xpsgtr_status_open(struct inode *inode, struct file *f) +{ + struct xpsgtr_phy *gtr_phy =3D inode->i_private; + + return single_open(f, xpsgtr_status_read, gtr_phy); +} + +static const struct file_operations xpsgtr_status_ops =3D { + .owner =3D THIS_MODULE, + .open =3D xpsgtr_status_open, + .release =3D single_release, + .read =3D seq_read, + .llseek =3D seq_lseek +}; + /* * Power Management */ @@ -917,6 +969,8 @@ static int xpsgtr_probe(struct platform_device *pdev) =20 gtr_phy->phy =3D phy; phy_set_drvdata(phy, gtr_phy); + debugfs_create_file("status", 0444, phy->debugfs, gtr_phy, + &xpsgtr_status_ops); } =20 /* Register the PHY provider. */ --=20 2.35.1.1320.gc452695387.dirty