dt-bindings: tpm: Consolidate TCG TIS bindings

A significant number of Trusted Platform Modules conform to the "TIS"
specification published by the Trusted Computing Group ("TCG PC Client
Specific TPM Interface Specification").  These chips typically use an
SPI, I²C or LPC bus as transport (via MMIO in the latter case).  Some
of them even support multiple of those buses (selectable through a
config strap) or the same chip is available in multiple SKUs, each with
a different bus interface.

The devicetree bindings for these TPMs have not been converted to DT
schema yet and are spread out across 3 generic files and 2 chip-specific
files.  A few TPM compatible strings were added to trivial-devices.yaml
even though additional properties are documented in the plaintext
bindings.

Consolidate the devicetree bindings into 3 yaml files, one per bus.

Move common properties to a separate tpm-common.yaml.

Document compatible strings which are supported by the TPM TIS driver
but were neglected to be added to the devicetree bindings.

Document the memory-region property recently introduced by commit
1e2714bb83fc ("tpm: Add reserved memory event log").

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/953fd4c7519030db88e5b5e12ab6307414ebdd21.1702806810.git.lukas@wunner.de
Signed-off-by: Rob Herring <robh@kernel.org>

1 files changed, 0 insertions, 16 deletions

diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index c3190f2a168a..29aed5ddba6b 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -49,8 +49,6 @@ properties:
           - ams,iaq-core
             # i2c serial eeprom (24cxx)
           - at,24c08
-            # i2c trusted platform module (TPM)
-          - atmel,at97sc3204t
             # ATSHA204 - i2c h/w symmetric crypto module
           - atmel,atsha204
             # ATSHA204A - i2c h/w symmetric crypto module
@@ -145,12 +143,6 @@ properties:
           - infineon,ir38263
             # Infineon IRPS5401 Voltage Regulator (PMIC)
           - infineon,irps5401
-            # Infineon SLB9635 (Soft-) I2C TPM (old protocol, max 100khz)
-          - infineon,slb9635tt
-            # Infineon SLB9645 I2C TPM (new protocol, max 400khz)
-          - infineon,slb9645tt
-            # Infineon SLB9673 I2C TPM 2.0
-          - infineon,slb9673
             # Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
           - infineon,tlv493d-a1b6
             # Infineon Multi-phase Digital VR Controller xdpe11280
@@ -301,10 +293,6 @@ properties:
           - national,lm85
             # I2C ±0.33°C Accurate, 12-Bit + Sign Temperature Sensor and Thermal Window Comparator
           - national,lm92
-            # i2c trusted platform module (TPM)
-          - nuvoton,npct501
-            # i2c trusted platform module (TPM2)
-          - nuvoton,npct601
             # Nuvoton Temperature Sensor
           - nuvoton,w83773g
             # OKI ML86V7667 video decoder
@@ -349,8 +337,6 @@ properties:
           - silabs,si7020
             # Skyworks SKY81452: Six-Channel White LED Driver with Touch Panel Bias Supply
           - skyworks,sky81452
-            # Socionext SynQuacer TPM MMIO module
-          - socionext,synquacer-tpm-mmio
             # SparkFun Qwiic Joystick (COM-15168) with i2c interface
           - sparkfun,qwiic-joystick
             # i2c serial eeprom (24cxx)
@@ -405,8 +391,6 @@ properties:
           - winbond,w83793
             # Vicor Corporation Digital Supervisor
           - vicor,pli1209bc
-            # i2c trusted platform module (TPM)
-          - winbond,wpct301
 
 required:
   - compatible