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exynos/dsim: add DT bindings

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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@samsung.com>
Signed-off-by: Inki Dae <inki.dae@samsung.com>
This commit is contained in:
Andrzej Hajda 2014-03-28 12:52:39 +01:00 committed by Inki Dae
parent 3eb578e2d5
commit 670935b696
1 changed files with 80 additions and 0 deletions
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Documentation/devicetree/bindings/video/exynos_dsim.txt Normal file
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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>;
};
};
};
};