arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts

   1 /*
   2  * Device Tree overlay for the Infineon SLB9670 Trusted Platform Module add-on
   3  * boards, which can be used as a secure key storage and hwrng.
   4  * available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by pi3g.
   5  */
   6
   7 /dts-v1/;
   8 /plugin/;
   9
  10 / {
  11         compatible = "brcm,bcm2835";
  12
  13         fragment@0 {
  14                 target = <&spi0>;
  15                 __overlay__ {
  16                         status = "okay";
  17                 };
  18         };
  19
  20         fragment@1 {
  21                 target = <&spidev1>;
  22                 __overlay__ {
  23                         status = "disabled";
  24                 };
  25         };
  26
  27         fragment@2 {
  28                 target = <&spi0>;
  29                 __overlay__ {
  30                         /* needed to avoid dtc warning */
  31                         #address-cells = <1>;
  32                         #size-cells = <0>;
  33                         slb9670: slb9670@1 {
  34                                 compatible = "infineon,slb9670";
  35                                 reg = <1>;      /* CE1 */
  36                                 #address-cells = <1>;
  37                                 #size-cells = <0>;
  38                                 spi-max-frequency = <32000000>;
  39                                 status = "okay";
  40                         };
  41
  42                 };
  43         };
  44 };