diff options
author | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-04-04 16:11:49 -0700 |
---|---|---|
committer | Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2018-04-04 16:11:49 -0700 |
commit | 664b0bae0b87f69bc9deb098f5e0158b9cf18e04 (patch) | |
tree | d5841492b396ff483723b9339c7c11dc33b67688 /Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt | |
parent | Input: ALPS - fix TrackStick detection on Thinkpad L570 and Latitude 7370 (diff) | |
parent | Input: i8042 - enable MUX on Sony VAIO VGN-CS series to fix touchpad (diff) | |
download | linux-dev-664b0bae0b87f69bc9deb098f5e0158b9cf18e04.tar.xz linux-dev-664b0bae0b87f69bc9deb098f5e0158b9cf18e04.zip |
Merge branch 'next' into for-linus
Prepare input updates for 4.17 merge window.
Diffstat (limited to 'Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt')
-rw-r--r-- | Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt new file mode 100644 index 000000000000..1cd050b4054c --- /dev/null +++ b/Documentation/devicetree/bindings/power/amlogic,meson-gx-pwrc.txt @@ -0,0 +1,61 @@ +Amlogic Meson Power Controller +============================== + +The Amlogic Meson SoCs embeds an internal Power domain controller. + +VPU Power Domain +---------------- + +The Video Processing Unit power domain is controlled by this power controller, +but the domain requires some external resources to meet the correct power +sequences. +The bindings must respect the power domain bindings as described in the file +power_domain.txt + +Device Tree Bindings: +--------------------- + +Required properties: +- compatible: should be "amlogic,meson-gx-pwrc-vpu" for the Meson GX SoCs +- #power-domain-cells: should be 0 +- amlogic,hhi-sysctrl: phandle to the HHI sysctrl node +- resets: phandles to the reset lines needed for this power demain sequence + as described in ../reset/reset.txt +- clocks: from common clock binding: handle to VPU and VAPB clocks +- clock-names: from common clock binding: must contain "vpu", "vapb" + corresponding to entry in the clocks property. + +Parent node should have the following properties : +- compatible: "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd" +- reg: base address and size of the AO system control register space. + +Example: +------- + +ao_sysctrl: sys-ctrl@0 { + compatible = "amlogic,meson-gx-ao-sysctrl", "syscon", "simple-mfd"; + reg = <0x0 0x0 0x0 0x100>; + + pwrc_vpu: power-controller-vpu { + compatible = "amlogic,meson-gx-pwrc-vpu"; + #power-domain-cells = <0>; + amlogic,hhi-sysctrl = <&sysctrl>; + resets = <&reset RESET_VIU>, + <&reset RESET_VENC>, + <&reset RESET_VCBUS>, + <&reset RESET_BT656>, + <&reset RESET_DVIN_RESET>, + <&reset RESET_RDMA>, + <&reset RESET_VENCI>, + <&reset RESET_VENCP>, + <&reset RESET_VDAC>, + <&reset RESET_VDI6>, + <&reset RESET_VENCL>, + <&reset RESET_VID_LOCK>; + clocks = <&clkc CLKID_VPU>, + <&clkc CLKID_VAPB>; + clock-names = "vpu", "vapb"; + }; +}; + + |