Re: [PATCH v3 1/2] dt-bindings: i3c: Document MediaTek I3C master bindings
From: Rob Herring <robh@kernel.org>
Date: 2019-07-24 20:21:26
Also in:
linux-devicetree, linux-i3c, linux-mediatek, lkml
On Tue, Jul 09, 2019 at 09:09:21PM +0800, Qii Wang wrote:
quoted hunk ↗ jump to hunk
Document MediaTek I3C master DT bindings. Signed-off-by: Qii Wang <qii.wang@mediatek.com> --- .../devicetree/bindings/i3c/mtk,i3c-master.txt | 48 ++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 Documentation/devicetree/bindings/i3c/mtk,i3c-master.txtdiff --git a/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt b/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt new file mode 100644 index 0000000..d32eda6 --- /dev/null +++ b/Documentation/devicetree/bindings/i3c/mtk,i3c-master.txt@@ -0,0 +1,48 @@ +Bindings for MediaTek I3C master block +===================================== + +Required properties: +-------------------- +- compatible: shall be "mediatek,i3c-master"
Needs to be SoC specific.
+- reg: physical base address of the controller and apdma base, length of
+ memory mapped region.
+- reg-names: shall be "main" for master controller and "dma" for apdma.
+- interrupts: the interrupt line connected to this I3C master.
+- clocks: shall reference the i3c and apdma clocks.
+- clock-names: shall include "main" and "dma".
+
+Mandatory properties defined by the generic binding (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details):
+
+- #address-cells: shall be set to 3
+- #size-cells: shall be set to 0
+
+Optional properties defined by the generic binding (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details):
+
+- i2c-scl-hz
+- i3c-scl-hz
+
+I3C device connected on the bus follow the generic description (see
+Documentation/devicetree/bindings/i3c/i3c.txt for more details).
+
+Example:
+
+ i3c0: i3c@1100d000 {
+ compatible = "mediatek,i3c-master";
+ reg = <0x1100d000 0x1000>,
+ <0x11000300 0x80>;
+ reg-names = "main", "dma";
+ interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_LOW>;
+ clocks = <&infracfg CLK_INFRA_I3C0>,
+ <&infracfg CLK_INFRA_AP_DMA>;
+ clock-names = "main", "dma";
+ #address-cells = <3>;
+ #size-cells = <0>;
+ i2c-scl-hz = <100000>;
+
+ nunchuk: nunchuk@52 {
+ compatible = "nintendo,nunchuk";
+ reg = <0x52 0x0 0x10>;
+ };
+ };
--
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