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([2804:1b3:a803:6c49:659c:692c:9416:2f0d]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-53080ce82aesm82437691cf.31.2026.09.09.05.58.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 05:58:55 -0700 (PDT) From: Fabio Estevam To: gregkh@linuxfoundation.org Cc: mathias.nyman@intel.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org, parth.pancholi@toradex.com, francesco.dolcini@toradex.com, Fabio Estevam Subject: [PATCH 3/3] usb: xhci-pci: Put PWRON_POLARITY on a defined state Date: Wed, 9 Sep 2026 09:58:42 -0300 Message-ID: <20260909125842.528340-3-festevam@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260909125842.528340-1-festevam@gmail.com> References: <20260909125842.528340-1-festevam@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Currently, TUSB73X0_PWRON_POLARITY is set when the "ti,pwron-active-high" is present. However, when "ti,pwron-active-high" is absent, its status could have been set previously by a bootloader or by a previous running kernel. To make the state of PWRON_POLARITY deterministic, always write it when the "ti,pwron-active-high" is present. Signed-off-by: Fabio Estevam --- drivers/usb/host/xhci-pci.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index 75aa679f7d79..833c55c3213a 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -684,10 +684,16 @@ int xhci_pci_common_probe(struct pci_dev *dev, const struct pci_device_id *id) dma_set_max_seg_size(&dev->dev, UINT_MAX); if (dev->vendor == PCI_VENDOR_ID_TI && - dev->device == PCI_DEVICE_ID_TI_TUSB73X0) + dev->device == PCI_DEVICE_ID_TI_TUSB73X0) { + u32 pwron_polarity = 0; + if (device_property_read_bool(&dev->dev, "ti,pwron-active-high")) - pci_clear_and_set_config_dword(dev, TUSB73X0_USB_CTRL, 0, - TUSB73X0_PWRON_POLARITY); + pwron_polarity = TUSB73X0_PWRON_POLARITY; + + pci_clear_and_set_config_dword(dev, TUSB73X0_USB_CTRL, + TUSB73X0_PWRON_POLARITY, + pwron_polarity); + } return 0; -- 2.43.0