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Diffstat (limited to 'Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt')
-rw-r--r-- | Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt | 39 |
1 files changed, 0 insertions, 39 deletions
diff --git a/Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt b/Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt deleted file mode 100644 index 0423699d74c7..000000000000 --- a/Documentation/devicetree/bindings/gpio/gpio-dsp-keystone.txt +++ /dev/null @@ -1,39 +0,0 @@ -Keystone 2 DSP GPIO controller bindings - -HOST OS userland running on ARM can send interrupts to DSP cores using -the DSP GPIO controller IP. It provides 28 IRQ signals per each DSP core. -This is one of the component used by the IPC mechanism used on Keystone SOCs. - -For example TCI6638K2K SoC has 8 DSP GPIO controllers: - - 8 for C66x CorePacx CPUs 0-7 - -Keystone 2 DSP GPIO controller has specific features: -- each GPIO can be configured only as output pin; -- setting GPIO value to 1 causes IRQ generation on target DSP core; -- reading pin value returns 0 - if IRQ was handled or 1 - IRQ is still - pending. - -Required Properties: -- compatible: should be "ti,keystone-dsp-gpio" -- ti,syscon-dev: phandle/offset pair. The phandle to syscon used to - access device state control registers and the offset of device's specific - registers within device state control registers range. -- gpio-controller: Marks the device node as a gpio controller. -- #gpio-cells: Should be 2. - -Please refer to gpio.txt in this directory for details of the common GPIO -bindings used by client devices. - -Example: - dspgpio0: keystone_dsp_gpio@2620240 { - compatible = "ti,keystone-dsp-gpio"; - ti,syscon-dev = <&devctrl 0x240>; - gpio-controller; - #gpio-cells = <2>; - }; - - dsp0: dsp0 { - compatible = "linux,rproc-user"; - ... - kick-gpio = <&dspgpio0 27>; - }; |