git.openwrt.org Git - openwrt/staging/linusw.git/blob

   1 From 92dab9ea5f389c12828283146c60054642453a91 Mon Sep 17 00:00:00 2001
   2 From: Robert Marko <robimarko@gmail.com>
   3 Date: Wed, 16 Aug 2023 18:45:38 +0200
   4 Subject: [PATCH] dt-bindings: firmware: qcom,scm: support indicating SDI
   5  default state
   6
   7 IPQ5018 has SDI (Secure Debug Image) enabled by TZ by default, and that
   8 means that WDT being asserted or just trying to reboot will hang the board
   9 in the debug mode and only pulling the power and repowering will help.
  10 Some IPQ4019 boards like Google WiFI have it enabled as well.
  11
  12 So, lets add a boolean property to indicate that SDI is enabled by default
  13 and thus needs to be disabled by the kernel.
  14
  15 Signed-off-by: Robert Marko <robimarko@gmail.com>
  16 Acked-by: Mukesh Ojha <quic_mojha@quicinc.com>
  17 Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
  18 Reviewed-by: Brian Norris <computersforpeace@gmail.com>
  19 Link: https://lore.kernel.org/r/20230816164641.3371878-1-robimarko@gmail.com
  20 Signed-off-by: Bjorn Andersson <andersson@kernel.org>
  21 ---
  22  Documentation/devicetree/bindings/firmware/qcom,scm.yaml | 8 ++++++++
  23  1 file changed, 8 insertions(+)
  24
  25 --- a/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
  26 +++ b/Documentation/devicetree/bindings/firmware/qcom,scm.yaml
  27 @@ -89,6 +89,14 @@ properties:
  28        protocol to handle sleeping SCM calls.
  29      maxItems: 1
  30
  31 +  qcom,sdi-enabled:
  32 +    description:
  33 +      Indicates that the SDI (Secure Debug Image) has been enabled by TZ
  34 +      by default and it needs to be disabled.
  35 +      If not disabled WDT assertion or reboot will cause the board to hang
  36 +      in the debug mode.
  37 +    type: boolean
  38 +
  39    qcom,dload-mode:
  40      $ref: /schemas/types.yaml#/definitions/phandle-array
  41      items: