On Mon, 25 Jun 2018, Matthias Brugger wrote:
On 30/04/18 12:30, Lee Jones wrote:
On Fri, 27 Apr 2018, matthias.bgg@kernel.org wrote:
From: Matthias Brugger mbrugger@suse.com
Add binding description for the mmsys mfd for some Mediatek devices. mmsys has some registers to control clock gates (which is used in the clk driver) and some registers to set the routing and enable the differnet blocks of the display subsystem.
Signed-off-by: Matthias Brugger mbrugger@suse.com
.../bindings/arm/mediatek/mediatek,mmsys.txt | 2 -- .../bindings/display/mediatek/mediatek,disp.txt | 2 +- .../devicetree/bindings/mfd/mediatek,mmsys.txt | 27 ++++++++++++++++++++++ 3 files changed, 28 insertions(+), 3 deletions(-) create mode 100644 Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt
diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt index 4eb8bbe15c01..4468345f8b1a 100644 --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt @@ -6,10 +6,8 @@ The Mediatek mmsys controller provides various clocks to the system. Required Properties:
- compatible: Should be one of:
- "mediatek,mt2701-mmsys", "syscon"
- "mediatek,mt2712-mmsys", "syscon"
- "mediatek,mt6797-mmsys", "syscon"
- "mediatek,mt8173-mmsys", "syscon"
- #clock-cells: Must be 1
The mmsys controller uses the common clk binding from diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt index 383183a89164..85a3b4ec06cd 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt @@ -9,7 +9,7 @@ function block.
All DISP device tree nodes must be siblings to the central MMSYS_CONFIG node. For a description of the MMSYS_CONFIG binding, see -Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt. +Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt
DISP function blocks
diff --git a/Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt b/Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt new file mode 100644 index 000000000000..2331ae16917e --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/mediatek,mmsys.txt @@ -0,0 +1,27 @@ +MediaTek MMSYS Multifunction Device Driver
What is "MMSYS"?
"Multi-Function Driver"s are specific to Linux.
What actually is the device?
It's includes all the DRM parts of the SoC together with the clocks for the device. MMSYS IMHO stands for Multi-Media-System.
Please update the document with that information.
Is there a datasheet I can view?
+MMSYS is a multifunction device with the following sub modules: +- clocks for the multi-media subsystem +- central node for the DRM subsystem.
+This document describes the binding for MFD device. The MFD takes care to initailize +the clock driver and the DRM driver. More info see +Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt
+Required properties: +- compatible: Should be one of:
- "mediatek,mt2701-mmsys", "syscon"
- "mediatek,mt8173-mmsys", "syscon"
+- #clock-cells: Must be 1
+Optional properties: +- power-domains: list of powerdomains needed for the subsystem to work
+Example:
+mmsys: clock-controller@14000000 {
- compatible = "mediatek,mt8173-mmsys", "syscon";
- reg = <0 0x14000000 0 0x1000>;
- power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>;
- #clock-cells = <1>;
+};