From patchwork Mon Mar 4 15:35:55 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Richard X-Patchwork-Id: 777902 Received: from relay8-d.mail.gandi.net (relay8-d.mail.gandi.net [217.70.183.201]) (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 D96DA55784; Mon, 4 Mar 2024 15:36:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.70.183.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709566595; cv=none; b=k9I+Ggp4NenmG2Ry47As05tskkecmZadrFsbW0Td2dco/qWbtCKMwv8wdyfHjQzVTpabXBDVyJtJ72+wsE67FQGkF14xVPtI6o8ALIkGUdRY9ak5FGk8ZbV+xrOx5NneHyQpQBABc2B8Cnbgx2YcSlk31DJKCISe0BNHGmDUjRk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709566595; c=relaxed/simple; bh=vN8vnshRL6hQY9u+MN7pyGYmpKbakAsxcQa8lsNHH2w=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=uImqF/Zsrc7VCorQtEDcWdpi9cb0WCc3vsNlarggB4vXscYszF4KUydeGthzTPoEjiKLA9PdHU38Ii3mYG4x5FDWg4tV7mO5+TblYxu3OFdrk5fxkrsyJI/bPVIjtK3uP24SVbjIUPjOEAY5rMkMX93+1gNqTYvafEIdfQN8T78= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com; spf=pass smtp.mailfrom=bootlin.com; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b=L4Zzf4vI; arc=none smtp.client-ip=217.70.183.201 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=bootlin.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=bootlin.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bootlin.com header.i=@bootlin.com header.b="L4Zzf4vI" Received: by mail.gandi.net (Postfix) with ESMTPSA id AE0981BF204; Mon, 4 Mar 2024 15:36:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bootlin.com; s=gm1; t=1709566591; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Kd9Oz4mdVW+hDLej27Xfdp5hp9Tma/hgJ2XUMzL0uAo=; b=L4Zzf4vINewbTLzOek8ywqdNRQTcMGgT1T78dNAvJ08wb1UOFzcnMRT3lboAucDV4zWxff oWdtgYF2g/GzqrBm6YyEvtxZPTrHS0tIu23sU2VVrTFodL4CqJ/EFZHB8IPYKivor/38SN L53+UVOCAES0QA6BpVlBCh5Owts47tgyrirQdAnyGLy77S+P889nWs1HjxeIMVNMzm7rcM TZLXnZbK3nZVFX4wq2etkQUWrpDV7k7d2BXMnjZxW4AH/gb+tJIB1BCNn7F0dvIk2mv3zP yNGljErCqNGOPns14qcLeQ8hLYQSFUUKJAGEsF5fe4L7Nl6XTNm2FmFUrLQs3w== From: Thomas Richard Date: Mon, 04 Mar 2024 16:35:55 +0100 Subject: [PATCH v4 12/18] phy: cadence-torrent: remove noop_ops phy operations Precedence: bulk X-Mailing-List: linux-omap@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20240102-j7200-pcie-s2r-v4-12-6f1f53390c85@bootlin.com> References: <20240102-j7200-pcie-s2r-v4-0-6f1f53390c85@bootlin.com> In-Reply-To: <20240102-j7200-pcie-s2r-v4-0-6f1f53390c85@bootlin.com> To: Linus Walleij , Bartosz Golaszewski , Andy Shevchenko , Tony Lindgren , Haojian Zhuang , Vignesh R , Aaro Koskinen , Janusz Krzysztofik , Andi Shyti , Peter Rosin , Vinod Koul , Kishon Vijay Abraham I , Philipp Zabel , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy?= =?utf-8?q?=C5=84ski?= , Rob Herring , Bjorn Helgaas Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org, linux-phy@lists.infradead.org, linux-pci@vger.kernel.org, gregory.clement@bootlin.com, theo.lebrun@bootlin.com, thomas.petazzoni@bootlin.com, u-kumar1@ti.com, Thomas Richard X-Mailer: b4 0.12.0 X-GND-Sasl: thomas.richard@bootlin.com Even if a PHY is already configured, the PHY operations are needed during resume stage, as the PHY is in reset state. The noop_ops PHY operations is removed to always have PHY operations. The already_configured flag is checked at the begening of init, configure and poweron operations to keep the already_configured behaviour. Signed-off-by: Thomas Richard --- drivers/phy/cadence/phy-cadence-torrent.c | 30 +++++++++++++----------------- 1 file changed, 13 insertions(+), 17 deletions(-) diff --git a/drivers/phy/cadence/phy-cadence-torrent.c b/drivers/phy/cadence/phy-cadence-torrent.c index b35fbc8a60e5..52cadca4c07b 100644 --- a/drivers/phy/cadence/phy-cadence-torrent.c +++ b/drivers/phy/cadence/phy-cadence-torrent.c @@ -1593,6 +1593,9 @@ static int cdns_torrent_dp_configure(struct phy *phy, struct cdns_torrent_phy *cdns_phy = dev_get_drvdata(phy->dev.parent); int ret; + if (cdns_phy->already_configured) + return 0; + ret = cdns_torrent_dp_verify_config(inst, &opts->dp); if (ret) { dev_err(&phy->dev, "invalid params for phy configure\n"); @@ -1628,6 +1631,12 @@ static int cdns_torrent_phy_on(struct phy *phy) u32 read_val; int ret; + if (cdns_phy->already_configured) { + /* Give 5ms to 10ms delay for the PIPE clock to be stable */ + usleep_range(5000, 10000); + return 0; + } + if (cdns_phy->nsubnodes == 1) { /* Take the PHY lane group out of reset */ reset_control_deassert(inst->lnk_rst); @@ -2306,6 +2315,9 @@ static int cdns_torrent_phy_init(struct phy *phy) u32 num_regs; int i, j; + if (cdns_phy->already_configured) + return 0; + if (cdns_phy->nsubnodes > 1) { if (phy_type == TYPE_DP) return cdns_torrent_dp_multilink_init(cdns_phy, inst, phy); @@ -2443,19 +2455,6 @@ static const struct phy_ops cdns_torrent_phy_ops = { .owner = THIS_MODULE, }; -static int cdns_torrent_noop_phy_on(struct phy *phy) -{ - /* Give 5ms to 10ms delay for the PIPE clock to be stable */ - usleep_range(5000, 10000); - - return 0; -} - -static const struct phy_ops noop_ops = { - .power_on = cdns_torrent_noop_phy_on, - .owner = THIS_MODULE, -}; - static int cdns_torrent_phy_configure_multilink(struct cdns_torrent_phy *cdns_phy) { @@ -2869,10 +2868,7 @@ static int cdns_torrent_phy_probe(struct platform_device *pdev) of_property_read_u32(child, "cdns,ssc-mode", &cdns_phy->phys[node].ssc_mode); - if (!cdns_phy->already_configured) - gphy = devm_phy_create(dev, child, &cdns_torrent_phy_ops); - else - gphy = devm_phy_create(dev, child, &noop_ops); + gphy = devm_phy_create(dev, child, &cdns_torrent_phy_ops); if (IS_ERR(gphy)) { ret = PTR_ERR(gphy); goto put_child;