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List:       tpmdd-devel
Subject:    [tpmdd-devel] [PATCH v4 4/4] tpm/st33zp24/dts/st33zp24-spi: Add dts documentation for st33zp24 spi p
From:       Christophe Ricard <christophe.ricard () gmail ! com>
Date:       2015-01-25 21:11:33
Message-ID: 1422220293-21005-5-git-send-email-christophe-h.ricard () st ! com
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Reviewed-by: Jason Gunthorpe <jason.gunthorpe@obsidianresearch.com>
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
---
 .../bindings/security/tpm/st33zp24-spi.txt         | 34 ++++++++++++++++++++++
 1 file changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/security/tpm/st33zp24-spi.txt

diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24-spi.txt \
b/Documentation/devicetree/bindings/security/tpm/st33zp24-spi.txt new file mode \
100644 index 0000000..158b016
--- /dev/null
+++ b/Documentation/devicetree/bindings/security/tpm/st33zp24-spi.txt
@@ -0,0 +1,34 @@
+* STMicroelectronics SAS. ST33ZP24 TPM SoC
+
+Required properties:
+- compatible: Should be "st,st33zp24-spi".
+- spi-max-frequency: Maximum SPI frequency (<= 10000000).
+
+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, power must be 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 SPI4):
+
+&mcspi4 {
+
+        status = "okay";
+
+        st33zp24@0 {
+
+                compatible = "st,st33zp24-spi";
+
+                spi-max-frequency = <10000000>;
+
+                interrupt-parent = <&gpio5>;
+                interrupts = <7 IRQ_TYPE_LEVEL_HIGH>;
+
+                lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>;
+        };
+};
-- 
2.1.0


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