From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
To: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jiri Slaby <jirislaby@kernel.org>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: [PATCH v1 1/1] serial: 8250_pci: Enumerate Elkhart Lake UARTs via dedicated driver
Date: Tue, 13 Jul 2021 13:17:39 +0300 [thread overview]
Message-ID: <20210713101739.36962-1-andriy.shevchenko@linux.intel.com> (raw)
Elkhart Lake UARTs are PCI enumerated Synopsys DesignWare v4.0+ UART
integrated with Intel iDMA 32-bit DMA controller. There is a specific
driver to handle them, i.e. 8250_lpss. Hence, disable 8250_pci
enumeration for these UARTs.
Fixes: 1b91d97c66ef ("serial: 8250_lpss: Add ->setup() for Elkhart Lake ports")
Fixes: 4f912b898dc2 ("serial: 8250_lpss: Enable HS UART on Elkhart Lake")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/tty/serial/8250/8250_pci.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/tty/serial/8250/8250_pci.c b/drivers/tty/serial/8250/8250_pci.c
index 75827b608fdb..02985cf90ef2 100644
--- a/drivers/tty/serial/8250/8250_pci.c
+++ b/drivers/tty/serial/8250/8250_pci.c
@@ -3836,6 +3836,12 @@ static const struct pci_device_id blacklist[] = {
{ PCI_VDEVICE(INTEL, 0x0f0c), },
{ PCI_VDEVICE(INTEL, 0x228a), },
{ PCI_VDEVICE(INTEL, 0x228c), },
+ { PCI_VDEVICE(INTEL, 0x4b96), },
+ { PCI_VDEVICE(INTEL, 0x4b97), },
+ { PCI_VDEVICE(INTEL, 0x4b98), },
+ { PCI_VDEVICE(INTEL, 0x4b99), },
+ { PCI_VDEVICE(INTEL, 0x4b9a), },
+ { PCI_VDEVICE(INTEL, 0x4b9b), },
{ PCI_VDEVICE(INTEL, 0x9ce3), },
{ PCI_VDEVICE(INTEL, 0x9ce4), },
--
2.30.2
reply other threads:[~2021-07-13 10:17 UTC|newest]
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