From mboxrd@z Thu Jan 1 00:00:00 1970 From: matthias.bgg@kernel.org (matthias.bgg at kernel.org) Date: Fri, 16 Nov 2018 13:54:45 +0100 Subject: [PATCH v5 08/12] dt-bindings: mediatek: Change the binding for mmsys clocks In-Reply-To: <20181116125449.23581-1-matthias.bgg@kernel.org> References: <20181116125449.23581-1-matthias.bgg@kernel.org> Message-ID: <20181116125449.23581-9-matthias.bgg@kernel.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Matthias Brugger On SoCs with no publical available HW or no working graphic stack we change the devicetree binding for the mmsys clock part. This way we don't need to register a platform device explicitly in the drm driver. Instead we can create a mmsys child which invokes the clock driver. Signed-off-by: Matthias Brugger --- .../bindings/arm/mediatek/mediatek,mmsys.txt | 21 ++++++++++++------- .../display/mediatek/mediatek,disp.txt | 4 ++++ 2 files changed, 18 insertions(+), 7 deletions(-) diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt index 4468345f8b1a..d4e205981363 100644 --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt @@ -1,4 +1,4 @@ -Mediatek mmsys controller +Mediatek mmsys clock controller ============================ The Mediatek mmsys controller provides various clocks to the system. @@ -6,18 +6,25 @@ The Mediatek mmsys controller provides various clocks to the system. Required Properties: - compatible: Should be one of: - - "mediatek,mt2712-mmsys", "syscon" - - "mediatek,mt6797-mmsys", "syscon" + - "mediatek,mt2712-mmsys-clk", "syscon" + - "mediatek,mt6797-mmsys-clk", "syscon" - #clock-cells: Must be 1 -The mmsys controller uses the common clk binding from +The mmsys clock controller uses the common clk binding from Documentation/devicetree/bindings/clock/clock-bindings.txt The available clocks are defined in dt-bindings/clock/mt*-clk.h. +It is a child of the mmsys block, see binding at: +Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt Example: -mmsys: clock-controller at 14000000 { - compatible = "mediatek,mt8173-mmsys", "syscon"; +mmsys: syscon at 14000000 { + compatible = "mediatek,mt2712-mmsys", "syscon", "simple-mfd"; reg = <0 0x14000000 0 0x1000>; - #clock-cells = <1>; + + mmsys_clk: clock-controller at 14000000 { + compatible = "mediatek,mt2712-mmsys-clk"; + #clock-cells = <1>; + }; + }; diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt index 4b008d992398..38c708cb7e55 100644 --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt @@ -54,6 +54,10 @@ Required properties (all function blocks): DPI controller nodes have multiple clock inputs. These are documented in mediatek,dsi.txt and mediatek,dpi.txt, respectively. +Some chips have a separate binding for the clock controller, which is a child node +of the mmsys device, for more information see: +Documentation/devicetree/bindings/arm/mediatek/mediatek,mmsys.txt + Required properties (DMA function blocks): - compatible: Should be one of "mediatek,-disp-ovl" -- 2.19.1