diff options
Diffstat (limited to 'doc/device-tree-bindings')
| -rw-r--r-- | doc/device-tree-bindings/config.txt | 4 | ||||
| -rw-r--r-- | doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt | 3 | ||||
| -rw-r--r-- | doc/device-tree-bindings/watchdog/gpio-wdt.txt | 19 |
3 files changed, 23 insertions, 3 deletions
diff --git a/doc/device-tree-bindings/config.txt b/doc/device-tree-bindings/config.txt index 85379fbbe5..3151778b2c 100644 --- a/doc/device-tree-bindings/config.txt +++ b/doc/device-tree-bindings/config.txt @@ -2,8 +2,8 @@ The /config node (Configuration Options) ---------------------------------------- A number of run-time configuration options are provided in the /config node -of the control device tree. You can access these using fdtdec_get_config_int(), -fdtdec_get_config_bool() and fdtdec_get_config_string(). +of the control device tree. You can access these using ofnode_conf_read_int(), +ofnode_conf_read_bool() and ofnode_conf_read_str(). These options are designed to affect the operation of U-Boot at runtime. Runtime-configuration items can help avoid proliferation of different builds diff --git a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt index 3a2ee4bd17..16f870225f 100644 --- a/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt +++ b/doc/device-tree-bindings/tpm2/tis-tpm2-spi.txt @@ -6,7 +6,8 @@ Required properties: - reg : SPI Chip select Optional properties: -- gpio-reset : Reset GPIO (if not connected to the SoC reset line) +- reset-gpios : Reset GPIO (if not connected to the SoC reset line) +- gpio-reset : Reset GPIO (deprecated, use reset-gpios instead) - spi-max-frequency : See spi-bus.txt Example: diff --git a/doc/device-tree-bindings/watchdog/gpio-wdt.txt b/doc/device-tree-bindings/watchdog/gpio-wdt.txt new file mode 100644 index 0000000000..c9a8559a3e --- /dev/null +++ b/doc/device-tree-bindings/watchdog/gpio-wdt.txt @@ -0,0 +1,19 @@ +GPIO watchdog timer + +Describes a simple watchdog timer which is reset by toggling a gpio. + +Required properties: + +- compatible: Must be "linux,wdt-gpio". +- gpios: gpio to toggle when wdt driver reset method is called. +- always-running: Boolean property indicating that the watchdog cannot + be disabled. At present, U-Boot only supports this kind of GPIO + watchdog. + +Example: + + gpio-wdt { + gpios = <&gpio0 1 0>; + compatible = "linux,wdt-gpio"; + always-running; + }; |