The patch adds DT bindings for Exynos DSI Master. DSIM follows rules
for DSI bus host bindings [1].
Properties describes its resources: memory, interrupt, clocks,
phy, regulators, frequencies of clocks and video interfaces.
[1]: Documentation/devicetree/bindings/mipi/dsi/mipi-dsi-bus.txt
Signed-off-by: Andrzej Hajda <a.hajda@xxxxxxxxxxx>
---
v2
- added burst and esc clock frequency properties
- add samsung prefix to all frequency props
v3
- reset-gpio changed to reset-gpios property
- added video interface bindings
- properties related to video interface moved to endpoint node
dsim bindings
---
.../devicetree/bindings/video/exynos_dsim.txt | 80 ++++++++++++++++++++++
1 file changed, 80 insertions(+)
create mode 100644 Documentation/devicetree/bindings/video/exynos_dsim.txt
diff --git a/Documentation/devicetree/bindings/video/exynos_dsim.txt b/Documentation/devicetree/bindings/video/exynos_dsim.txt
new file mode 100644
index 0000000..33b5730
--- /dev/null
+++ b/Documentation/devicetree/bindings/video/exynos_dsim.txt
@@ -0,0 +1,80 @@
+Exynos MIPI DSI Master
+
+Required properties:
+ - compatible: "samsung,exynos4210-mipi-dsi"
+ - reg: physical base address and length of the registers set for the device
+ - interrupts: should contain DSI interrupt
+ - clocks: list of clock specifiers, must contain an entry for each required
+ entry in clock-names
+ - clock-names: should include "bus_clk"and "pll_clk" entries
+ - phys: list of phy specifiers, must contain an entry for each required
+ entry in phy-names
+ - phy-names: should include "dsim" entry
+ - vddcore-supply: MIPI DSIM Core voltage supply (e.g. 1.1V)
+ - vddio-supply: MIPI DSIM I/O and PLL voltage supply (e.g. 1.8V)
+ - samsung,pll-clock-frequency: specifies frequency of the "pll_clk" clock
+ - #address-cells, #size-cells: should be set respectively to <1> and <0>
+ according to DSI host bindings (see MIPI DSI bindings [1])
+
+Optional properties:
+ - samsung,power-domain: a phandle to DSIM power domain node
+
+Child nodes:
+ Should contain DSI peripheral nodes (see MIPI DSI bindings [1]).
+
+Video interfaces:
+ Device node can contain video interface port nodes according to [2].
+ The following are properties specific to those nodes:
+
+ port node:
+ - reg: (required) can be 0 for input RGB/I80 port or 1 for DSI port;
+
+ endpoint node of DSI port (reg = 1):
+ - samsung,burst-clock-frequency: specifies DSI frequency in high-speed burst
+ mode
+ - samsung,esc-clock-frequency: specifies DSI frequency in escape mode
+
+[1]: Documentation/devicetree/bindings/mipi/dsi/mipi-dsi-bus.txt
+[2]: Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example:
+
+ dsi@11C80000 {
+ compatible = "samsung,exynos4210-mipi-dsi";
+ reg = <0x11C80000 0x10000>;
+ interrupts = <0 79 0>;
+ clocks = <&clock 286>, <&clock 143>;
+ clock-names = "bus_clk", "pll_clk";
+ phys = <&mipi_phy 1>;
+ phy-names = "dsim";
+ vddcore-supply = <&vusb_reg>;
+ vddio-supply = <&vmipi_reg>;
+ samsung,power-domain = <&pd_lcd0>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ samsung,pll-clock-frequency = <24000000>;
+
+ panel@1 {
+ reg = <0>;
+ ...
+ port {
+ panel_ep: endpoint {
+ remote-endpoint = <&dsi_ep>;
+ };
+ };
+ };
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@1 {
+ dsi_ep: endpoint {
+ reg = <0>;
+ samsung,burst-clock-frequency = <500000000>;
+ samsung,esc-clock-frequency = <20000000>;
+ remote-endpoint = <&panel_ep>;
+ };
+ };
+ };
+ };
--
1.8.3.2
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