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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 01:02:30 +0000 |
commit | 76cb841cb886eef6b3bee341a2266c76578724ad (patch) | |
tree | f5892e5ba6cc11949952a6ce4ecbe6d516d6ce58 /Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt | |
parent | Initial commit. (diff) | |
download | linux-76cb841cb886eef6b3bee341a2266c76578724ad.tar.xz linux-76cb841cb886eef6b3bee341a2266c76578724ad.zip |
Adding upstream version 4.19.249.upstream/4.19.249
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt')
-rw-r--r-- | Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt b/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt new file mode 100644 index 000000000..c591b9cb5 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/abilis,tb10x-iomux.txt @@ -0,0 +1,80 @@ +Abilis Systems TB10x pin controller +=================================== + +Required properties +------------------- + +- compatible: should be "abilis,tb10x-iomux"; +- reg: should contain the physical address and size of the pin controller's + register range. + + +Function definitions +-------------------- + +Functions are defined (and referenced) by sub-nodes of the pin controller. +Every sub-node defines exactly one function (implying a set of pins). +Every function is associated to one named pin group inside the pin controller +driver and these names are used to associate pin group predefinitions to pin +controller sub-nodes. + +Required function definition subnode properties: + - abilis,function: should be set to the name of the function's pin group. + +The following pin groups are available: + - GPIO ports: gpioa, gpiob, gpioc, gpiod, gpioe, gpiof, gpiog, + gpioh, gpioi, gpioj, gpiok, gpiol, gpiom, gpion + - Serial TS input ports: mis0, mis1, mis2, mis3, mis4, mis5, mis6, mis7 + - Parallel TS input ports: mip1, mip3, mip5, mip7 + - Serial TS output ports: mos0, mos1, mos2, mos3 + - Parallel TS output port: mop + - CI+ port: ciplus + - CableCard (Mcard) port: mcard + - Smart card ports: stc0, stc1 + - UART ports: uart0, uart1 + - SPI ports: spi1, spi3 + - JTAG: jtag + +All other ports of the chip are not multiplexed and thus not managed by this +driver. + + +GPIO ranges definition +---------------------- + +The named pin groups of GPIO ports can be used to define GPIO ranges as +explained in Documentation/devicetree/bindings/gpio/gpio.txt. + + +Example +------- + +iomux: iomux@ff10601c { + compatible = "abilis,tb10x-iomux"; + reg = <0xFF10601c 0x4>; + pctl_gpio_a: pctl-gpio-a { + abilis,function = "gpioa"; + }; + pctl_uart0: pctl-uart0 { + abilis,function = "uart0"; + }; +}; +uart@ff100000 { + compatible = "snps,dw-apb-uart"; + reg = <0xFF100000 0x100>; + clock-frequency = <166666666>; + interrupts = <25 1>; + reg-shift = <2>; + reg-io-width = <4>; + pinctrl-names = "default"; + pinctrl-0 = <&pctl_uart0>; +}; +gpioa: gpio@ff140000 { + compatible = "abilis,tb10x-gpio"; + reg = <0xFF140000 0x1000>; + gpio-controller; + #gpio-cells = <2>; + ngpio = <3>; + gpio-ranges = <&iomux 0 0>; + gpio-ranges-group-names = "gpioa"; +}; |