diff options
| author | Simon Glass <sjg@chromium.org> | 2020-07-07 21:32:07 -0600 |
|---|---|---|
| committer | Bin Meng <bmeng.cn@gmail.com> | 2020-07-17 14:32:24 +0800 |
| commit | f18589576cb87e76c20046b335124a8af6feb6ac (patch) | |
| tree | f8f1b8a00c47c2923da94b3cf8fbe994b18056d4 /doc | |
| parent | f02d0eb3fab332b94ebb98b73c3445f920a0c852 (diff) | |
dm: core: Add a way of overriding the ACPI device path
Some devices such as GPIO need to override the normal path that would be
generated by driver model. Add a device-tree property for this.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Wolfgang Wallner <wolfgang.wallner@br-automation.com>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/device.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/device.txt b/doc/device-tree-bindings/device.txt index 7140339623..2a5736c598 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,path : Specifies the full ACPI path for a device. This overrides the + normal path built from the driver-model hierarchy - 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 @@ -47,3 +49,24 @@ pcie-a0@14,0 { interrupts-extended = <&acpi_gpe 0x3c 0>; }; }; + +p2sb: p2sb@d,0 { + u-boot,dm-pre-reloc; + reg = <0x02006810 0 0 0 0>; + compatible = "intel,apl-p2sb"; + early-regs = <IOMAP_P2SB_BAR 0x100000>; + pci,no-autoconfig; + + n { + compatible = "intel,apl-pinctrl"; + u-boot,dm-pre-reloc; + intel,p2sb-port-id = <PID_GPIO_N>; + acpi,path = "\\_SB.GPO0"; + gpio_n: gpio-n { + compatible = "intel,gpio"; + u-boot,dm-pre-reloc; + gpio-controller; + #gpio-cells = <2>; + linux-name = "INT3452:00"; + }; + }; |