From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hqemgate14.nvidia.com ([216.228.121.143]:19639 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932244AbdJ0Taz (ORCPT ); Fri, 27 Oct 2017 15:30:55 -0400 From: Manikanta Maddireddy To: , , CC: , , , , Manikanta Maddireddy Subject: [PATCH 01/12] PCI: tegra: Start LTSSM after programming root port Date: Sat, 28 Oct 2017 00:59:18 +0530 Message-ID: <1509132569-9398-2-git-send-email-mmaddireddy@nvidia.com> In-Reply-To: <1509132569-9398-1-git-send-email-mmaddireddy@nvidia.com> References: <1509132569-9398-1-git-send-email-mmaddireddy@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-pci-owner@vger.kernel.org List-ID: This patch ensures that LTSSM is started (by deasserting pcie_xrst) only after all the required root port register programming is completed. Signed-off-by: Manikanta Maddireddy --- drivers/pci/host/pci-tegra.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/pci/host/pci-tegra.c b/drivers/pci/host/pci-tegra.c index 96e8038c3019..b41c60c7414c 100644 --- a/drivers/pci/host/pci-tegra.c +++ b/drivers/pci/host/pci-tegra.c @@ -1024,9 +1024,6 @@ static int tegra_pcie_enable_controller(struct tegra_pcie *pcie) } } - /* take the PCIe interface module out of reset */ - reset_control_deassert(pcie->pcie_xrst); - /* finally enable PCIe */ value = afi_readl(pcie, AFI_CONFIGURATION); value |= AFI_CONFIGURATION_EN_FPCI; @@ -1065,7 +1062,6 @@ static void tegra_pcie_power_off(struct tegra_pcie *pcie) dev_err(dev, "failed to power off PHY(s): %d\n", err); } - reset_control_assert(pcie->pcie_xrst); reset_control_assert(pcie->afi_rst); reset_control_assert(pcie->pex_rst); @@ -2116,7 +2112,12 @@ static void tegra_pcie_enable_ports(struct tegra_pcie *pcie) port->index, port->lanes); tegra_pcie_port_enable(port); + } + /* take the PCIe interface module out of reset */ + reset_control_deassert(pcie->pcie_xrst); + + list_for_each_entry_safe(port, tmp, &pcie->ports, list) { if (tegra_pcie_port_check_link(port)) continue; -- 2.1.4