[PATCH v3 09/15] tpm/tpm_i2c_stm_st33/dts/st33zp24_i2c: Add DTS Documentation
From: Christophe Ricard <hidden>
Date: 2014-10-13 20:23:31
Subsystem:
open firmware and flattened device tree bindings, the rest · Maintainers:
Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
st33zp24 tpm can be seen as a trivial i2c device as other i2c tpm. However several other properties needs to be documented such as lpcpd. Signed-off-by: Christophe Ricard <redacted> --- .../devicetree/bindings/security/tpm/st33zp24.txt | 36 ++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/security/tpm/st33zp24.txt
diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24.txt b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt
new file mode 100644
index 0000000..eb48222
--- /dev/null
+++ b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt@@ -0,0 +1,36 @@ +* STMicroelectronics SAS. ST33ZP24 TPM SoC + +Required properties: +- compatible: Should be "st,st33zp24_i2c". +- clock-frequency: I²C work frequency. +- reg: address on the bus + +Optional ST33ZP24 Properties: +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected +- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state. +If set vps must present when the platform is going into sleep/hibernate mode. + +Optional SoC Specific Properties: +- pinctrl-names: Contains only one value - "default". +- pintctrl-0: Specifies the pin control groups used for this controller. + +Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2): + +&i2c2 { + + status = "okay"; + + st33zp24: st33zp24@13 { + + compatible = "st,st33zp24_i2c"; + + reg = <0x013>; + clock-frequency = <400000>; + + interrupt-parent = <&gpio5>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + + lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>; + }; +};
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html