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Diffstat (limited to 'Documentation/firmware-guide/acpi/enumeration.rst')
| -rw-r--r-- | Documentation/firmware-guide/acpi/enumeration.rst | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/Documentation/firmware-guide/acpi/enumeration.rst b/Documentation/firmware-guide/acpi/enumeration.rst index d79f693909..0165b09c09 100644 --- a/Documentation/firmware-guide/acpi/enumeration.rst +++ b/Documentation/firmware-guide/acpi/enumeration.rst @@ -595,7 +595,7 @@ bridges/switches of the board. For example, let's assume we have a system with a PCIe serial port, an Exar XR17V3521, soldered on the main board. This UART chip also includes -16 GPIOs and we want to add the property ``gpio-line-names`` [1] to these pins. +16 GPIOs and we want to add the property ``gpio-line-names`` [1]_ to these pins. In this case, the ``lspci`` output for this component is:: 07:00.0 Serial controller: Exar Corp. XR17V3521 Dual PCIe UART (rev 03) @@ -637,7 +637,7 @@ of the chipset bridge (also called "root port") with address:: Bus: 0 - Device: 14 - Function: 1 To find this information, it is necessary to disassemble the BIOS ACPI tables, -in particular the DSDT (see also [2]):: +in particular the DSDT (see also [2]_):: mkdir ~/tables/ cd ~/tables/ @@ -667,7 +667,7 @@ device:: } ... other definitions follow ... -and the _ADR method [3] returns exactly the device/function couple that +and the _ADR method [3]_ returns exactly the device/function couple that we are looking for. With this information and analyzing the above ``lspci`` output (both the devices list and the devices tree), we can write the following ACPI description for the Exar PCIe UART, also adding the list of its GPIO line @@ -724,10 +724,10 @@ created analyzing the position of the Exar UART in the PCI bus topology. References ========== -[1] Documentation/firmware-guide/acpi/gpio-properties.rst +.. [1] Documentation/firmware-guide/acpi/gpio-properties.rst -[2] Documentation/admin-guide/acpi/initrd_table_override.rst +.. [2] Documentation/admin-guide/acpi/initrd_table_override.rst -[3] ACPI Specifications, Version 6.3 - Paragraph 6.1.1 _ADR Address) +.. [3] ACPI Specifications, Version 6.3 - Paragraph 6.1.1 _ADR Address) https://uefi.org/sites/default/files/resources/ACPI_6_3_May16.pdf, referenced 2020-11-18 |