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-QCOM GSBI (General Serial Bus Interface) Driver
-
-The GSBI controller is modeled as a node with zero or more child nodes, each
-representing a serial sub-node device that is mux'd as part of the GSBI
-configuration settings. The mode setting will govern the input/output mode of
-the 4 GSBI IOs.
-
-Required properties:
-- compatible: Should contain "qcom,gsbi-v1.0.0"
-- cell-index: Should contain the GSBI index
-- reg: Address range for GSBI registers
-- clocks: required clock
-- clock-names: must contain "iface" entry
-- qcom,mode : indicates MUX value for configuration of the serial interface.
- Please reference dt-bindings/soc/qcom,gsbi.h for valid mux values.
-
-Optional properties:
-- qcom,crci : indicates CRCI MUX value for QUP CRCI ports. Please reference
- dt-bindings/soc/qcom,gsbi.h for valid CRCI mux values.
-- syscon-tcsr: indicates phandle of TCSR syscon node. Required if child uses
- dma.
-
-Required properties if child node exists:
-- #address-cells: Must be 1
-- #size-cells: Must be 1
-- ranges: Must be present
-
-Properties for children:
-
-A GSBI controller node can contain 0 or more child nodes representing serial
-devices. These serial devices can be a QCOM UART, I2C controller, spi
-controller, or some combination of aforementioned devices.
-
-See the following for child node definitions:
-Documentation/devicetree/bindings/i2c/qcom,i2c-qup.txt
-Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
-Documentation/devicetree/bindings/serial/qcom,msm-uartdm.txt
-
-Example for APQ8064:
-
-#include <dt-bindings/soc/qcom,gsbi.h>
-
- gsbi4@16300000 {
- compatible = "qcom,gsbi-v1.0.0";
- cell-index = <4>;
- reg = <0x16300000 0x100>;
- clocks = <&gcc GSBI4_H_CLK>;
- clock-names = "iface";
- #address-cells = <1>;
- #size-cells = <1>;
- ranges;
- qcom,mode = <GSBI_PROT_I2C_UART>;
- qcom,crci = <GSBI_CRCI_QUP>;
-
- syscon-tcsr = <&tcsr>;
-
- /* child nodes go under here */
-
- i2c_qup4: i2c@16380000 {
- compatible = "qcom,i2c-qup-v1.1.1";
- reg = <0x16380000 0x1000>;
- interrupts = <0 153 0>;
-
- clocks = <&gcc GSBI4_QUP_CLK>, <&gcc GSBI4_H_CLK>;
- clock-names = "core", "iface";
-
- clock-frequency = <200000>;
-
- #address-cells = <1>;
- #size-cells = <0>;
-
- };
-
- uart4: serial@16340000 {
- compatible = "qcom,msm-uartdm-v1.3", "qcom,msm-uartdm";
- reg = <0x16340000 0x1000>,
- <0x16300000 0x1000>;
- interrupts = <0 152 0x0>;
- clocks = <&gcc GSBI4_UART_CLK>, <&gcc GSBI4_H_CLK>;
- clock-names = "core", "iface";
- };
- };
-
- tcsr: syscon@1a400000 {
- compatible = "qcom,apq8064-tcsr", "syscon";
- reg = <0x1a400000 0x100>;
- };