target/linux/brcm2708/patches-4.14/950-0449-Add-overlay-for-SLB9760-Iridium-LetsTrust-TPM.patch

   1 From 0e9dac6a2530f94fd8f3d195d929523536bc7ab2 Mon Sep 17 00:00:00 2001
   2 From: Peter Huewe <peterhuewe@gmx.de>
   3 Date: Thu, 14 Jun 2018 22:51:24 +0200
   4 Subject: [PATCH 449/454] Add overlay for SLB9760 Iridium /LetsTrust TPM
   5
   6 Device Tree overlay for the Infineon SLB9670 Trusted Platform Module add-on
   7 boards, which can be used as a secure key storage and hwrng.
   8 available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by
   9 pi3g.
  10
  11 Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
  12 ---
  13  arch/arm/boot/dts/overlays/Makefile           |  1 +
  14  arch/arm/boot/dts/overlays/README             |  8 ++++
  15  .../boot/dts/overlays/tpm-slb9670-overlay.dts | 44 +++++++++++++++++++
  16  3 files changed, 53 insertions(+)
  17  create mode 100644 arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -138,6 +138,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  22         tc358743.dtbo \
  23         tc358743-audio.dtbo \
  24         tinylcd35.dtbo \
  25 +       tpm-slb9670.dtbo \
  26         uart0.dtbo \
  27         uart1.dtbo \
  28         upstream.dtbo \
  29 --- a/arch/arm/boot/dts/overlays/README
  30 +++ b/arch/arm/boot/dts/overlays/README
  31 @@ -1994,6 +1994,14 @@ Params: speed                   Display
  32                  dtoverlay=tinylcd35,touch,touchgpio=3
  33
  34
  35 +Name:   tpm-slb9670
  36 +Info:   Enables support for Infineon SLB9670 Trusted Platform Module add-on
  37 +        boards, which can be used as a secure key storage and hwrng,
  38 +        available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by pi3g.
  39 +Load:   dtoverlay=tpm-slb9670
  40 +Params: <None>
  41 +
  42 +
  43  Name:   uart0
  44  Info:   Change the pin usage of uart0
  45  Load:   dtoverlay=uart0,<param>=<val>
  46 --- /dev/null
  47 +++ b/arch/arm/boot/dts/overlays/tpm-slb9670-overlay.dts
  48 @@ -0,0 +1,44 @@
  49 +/*
  50 + * Device Tree overlay for the Infineon SLB9670 Trusted Platform Module add-on
  51 + * boards, which can be used as a secure key storage and hwrng.
  52 + * available as "Iridium SLB9670" by Infineon and "LetsTrust TPM" by pi3g.
  53 + */
  54 +
  55 +/dts-v1/;
  56 +/plugin/;
  57 +
  58 +/ {
  59 +       compatible = "brcm,bcm2835", "brcm,bcm2708", "brcm,bcm2709";
  60 +
  61 +       fragment@0 {
  62 +               target = <&spi0>;
  63 +               __overlay__ {
  64 +                       status = "okay";
  65 +               };
  66 +       };
  67 +
  68 +       fragment@1 {
  69 +               target = <&spidev1>;
  70 +               __overlay__ {
  71 +                       status = "disabled";
  72 +               };
  73 +       };
  74 +
  75 +       fragment@2 {
  76 +               target = <&spi0>;
  77 +               __overlay__ {
  78 +                       /* needed to avoid dtc warning */
  79 +                       #address-cells = <1>;
  80 +                       #size-cells = <0>;
  81 +                       slb9670: slb9670@1 {
  82 +                               compatible = "infineon,slb9670";
  83 +                               reg = <1>;      /* CE1 */
  84 +                               #address-cells = <1>;
  85 +                               #size-cells = <0>;
  86 +                               spi-max-frequency = <32000000>;
  87 +                               status = "okay";
  88 +                       };
  89 +
  90 +               };
  91 +       };
  92 +};