diff options
Diffstat (limited to 'target/linux/ipq806x/patches/0061-i2c-qup-Add-device-tree-bindings-information.patch')
| -rw-r--r-- | target/linux/ipq806x/patches/0061-i2c-qup-Add-device-tree-bindings-information.patch | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches/0061-i2c-qup-Add-device-tree-bindings-information.patch b/target/linux/ipq806x/patches/0061-i2c-qup-Add-device-tree-bindings-information.patch new file mode 100644 index 0000000000..6ddae4fe6c --- /dev/null +++ b/target/linux/ipq806x/patches/0061-i2c-qup-Add-device-tree-bindings-information.patch @@ -0,0 +1,71 @@ +From 81480a89c72d811376e9e040729721705b2a984d Mon Sep 17 00:00:00 2001 +From: "Ivan T. Ivanov" <iivanov@mm-sol.com> +Date: Thu, 13 Mar 2014 19:07:42 -0700 +Subject: [PATCH 061/182] i2c: qup: Add device tree bindings information + +The Qualcomm Universal Peripherial (QUP) wraps I2C mini-core and +provide input and output FIFO's for it. I2C controller can operate +as master with supported bus speeds of 100Kbps and 400Kbps. + +Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com> +[bjorn: reformulated part of binding description + added version to compatible + cleaned up example] +Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com> +Acked-by: Rob Herring <robh@kernel.org> +[wsa: removed the dummy child node which was a confusing example] +Signed-off-by: Wolfram Sang <wsa@the-dreams.de> +--- + .../devicetree/bindings/i2c/qcom,i2c-qup.txt | 40 ++++++++++++++++++++ + 1 file changed, 40 insertions(+) + create mode 100644 Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt + +diff --git a/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt +new file mode 100644 +index 0000000..dc71754 +--- /dev/null ++++ b/Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt +@@ -0,0 +1,40 @@ ++Qualcomm Universal Peripheral (QUP) I2C controller ++ ++Required properties: ++ - compatible: Should be: ++ * "qcom,i2c-qup-v1.1.1" for 8660, 8960 and 8064. ++ * "qcom,i2c-qup-v2.1.1" for 8974 v1. ++ * "qcom,i2c-qup-v2.2.1" for 8974 v2 and later. ++ - reg: Should contain QUP register address and length. ++ - interrupts: Should contain I2C interrupt. ++ ++ - clocks: A list of phandles + clock-specifiers, one for each entry in ++ clock-names. ++ - clock-names: Should contain: ++ * "core" for the core clock ++ * "iface" for the AHB clock ++ ++ - #address-cells: Should be <1> Address cells for i2c device address ++ - #size-cells: Should be <0> as i2c addresses have no size component ++ ++Optional properties: ++ - clock-frequency: Should specify the desired i2c bus clock frequency in Hz, ++ defaults to 100kHz if omitted. ++ ++Child nodes should conform to i2c bus binding. ++ ++Example: ++ ++ i2c@f9924000 { ++ compatible = "qcom,i2c-qup-v2.2.1"; ++ reg = <0xf9924000 0x1000>; ++ interrupts = <0 96 0>; ++ ++ clocks = <&gcc GCC_BLSP1_QUP2_I2C_APPS_CLK>, <&gcc GCC_BLSP1_AHB_CLK>; ++ clock-names = "core", "iface"; ++ ++ clock-frequency = <355000>; ++ ++ #address-cells = <1>; ++ #size-cells = <0>; ++ }; +-- +1.7.10.4 + |