samsung-mipi-csis.txt

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    1 Samsung S5P/Exynos SoC series MIPI CSI-2 receiver (MIPI CSIS)
    2 -------------------------------------------------------------
    3 
    4 Required properties:
    5 
    6 - compatible      : "samsung,s5pv210-csis" for S5PV210 (S5PC110),
    7                     "samsung,exynos4210-csis" for Exynos4210 (S5PC210),
    8                     "samsung,exynos4212-csis" for Exynos4212/Exynos4412,
    9                     "samsung,exynos5250-csis" for Exynos5250;
   10 - reg             : offset and length of the register set for the device;
   11 - interrupts      : should contain MIPI CSIS interrupt; the format of the
   12                     interrupt specifier depends on the interrupt controller;
   13 - bus-width       : maximum number of data lanes supported (SoC specific);
   14 - vddio-supply    : MIPI CSIS I/O and PLL voltage supply (e.g. 1.8V);
   15 - vddcore-supply  : MIPI CSIS Core voltage supply (e.g. 1.1V);
   16 - clocks          : list of clock specifiers, corresponding to entries in
   17                     clock-names property;
   18 - clock-names     : must contain "csis", "sclk_csis" entries, matching entries
   19                     in the clocks property.
   20 
   21 Optional properties:
   22 
   23 - clock-frequency : The IP's main (system bus) clock frequency in Hz, default
   24                     value when this property is not specified is 166 MHz;
   25 - samsung,csis-wclk : CSI-2 wrapper clock selection. If this property is present
   26                     external clock from CMU will be used, or the bus clock if
   27                     if it's not specified.
   28 
   29 The device node should contain one 'port' child node with one child 'endpoint'
   30 node, according to the bindings defined in Documentation/devicetree/bindings/
   31 media/video-interfaces.txt. The following are properties specific to those nodes.
   32 
   33 port node
   34 ---------
   35 
   36 - reg             : (required) must be 3 for camera C input (CSIS0) or 4 for
   37                     camera D input (CSIS1);
   38 
   39 endpoint node
   40 -------------
   41 
   42 - data-lanes      : (required) an array specifying active physical MIPI-CSI2
   43                     data input lanes and their mapping to logical lanes; the
   44                     array's content is unused, only its length is meaningful;
   45 
   46 - samsung,csis-hs-settle : (optional) differential receiver (HS-RX) settle time;
   47 
   48 
   49 Example:
   50 
   51         reg0: regulator@0 {
   52         };
   53 
   54         reg1: regulator@1 {
   55         };
   56 
   57 /* SoC properties */
   58 
   59         csis_0: csis@11880000 {
   60                 compatible = "samsung,exynos4210-csis";
   61                 reg = <0x11880000 0x1000>;
   62                 interrupts = <0 78 0>;
   63                 #address-cells = <1>;
   64                 #size-cells = <0>;
   65         };
   66 
   67 /* Board properties */
   68 
   69         csis_0: csis@11880000 {
   70                 clock-frequency = <166000000>;
   71                 vddio-supply = <&reg0>;
   72                 vddcore-supply = <&reg1>;
   73                 port {
   74                         reg = <3>; /* 3 - CSIS0, 4 - CSIS1 */
   75                         csis0_ep: endpoint {
   76                                 remote-endpoint = <...>;
   77                                 data-lanes = <1>, <2>;
   78                                 samsung,csis-hs-settle = <12>;
   79                         };
   80                 };
   81         };

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sys/contrib/device-tree/Bindings/media/samsung-mipi-csis.txt