diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-07 13:12:11 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | fefac0b0643b14e72c356cf05dabcbe7512c4709 (patch) | |
| tree | c3651cb15214fa2f99b31f5bc94a0e9a9aebe638 /doc | |
| parent | 20349781a3ca833c67126888ddfce7c1517c772e (diff) | |
dm: acpi: Enhance acpi_get_name()
For many device types it is possible to figure out the name just by
looking at its uclass or parent. Add a function to handle this, since it
allows us to cover the vast majority of cases automatically.
However it is sometimes impossible to figure out an ACPI name for a device
just by looking at its uclass. For example a touch device may have a
vendor-specific name. Add a new "acpi,name" property to allow a custom
name to be created.
With this new feature we can drop the get_name() methods in the sandbox
I2C and SPI drivers. They were only added for testing purposes. Update the
tests to use the new values.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/device.txt | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/device.txt b/doc/device-tree-bindings/device.txt index 27bd3978d9..7140339623 100644 --- a/doc/device-tree-bindings/device.txt +++ b/doc/device-tree-bindings/device.txt @@ -17,6 +17,8 @@ the acpi,compatible property. System) Device Name) - acpi,hid : Contains the string to use as the HID (Hardware ID) identifier _HID + - acpi,name : Provides the ACPI name for a device, which is a string consisting + of four alphanumeric character (upper case) - acpi,uid : _UID value for device - linux,probed : Tells U-Boot to add 'linux,probed' to the ACPI tables so that Linux will only load the driver if the device can be detected (e.g. on I2C @@ -34,3 +36,14 @@ elan_touchscreen: elan-touchscreen@10 { interrupts-extended = <&acpi_gpe GPIO_21_IRQ IRQ_TYPE_EDGE_FALLING>; linux,probed; }; + +pcie-a0@14,0 { + reg = <0x0000a000 0 0 0 0>; + acpi,name = "RP01"; + wifi: wifi { + compatible = "intel,generic-wifi"; + acpi,ddn = "Intel WiFi"; + acpi,name = "WF00"; + interrupts-extended = <&acpi_gpe 0x3c 0>; + }; +}; |