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    Subject[PATCH v4 4/6] dt-bindings: pinctrl: Add ZynqMP pin controller bindings
    Date
    From: Rajan Vaja <rajan.vaja@xilinx.com>

    Add documentation to describe Xilinx ZynqMP pin controller
    bindings.

    Signed-off-by: Rajan Vaja <rajan.vaja@xilinx.com>
    Signed-off-by: Jolly Shah <jollys@xilinx.com>
    Reviewed-by: Rob Herring <robh@kernel.org>
    ---
    .../bindings/pinctrl/xlnx,zynqmp-pinctrl.txt | 275 ++++++++++++++++++
    1 file changed, 275 insertions(+)
    create mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.txt

    diff --git a/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.txt
    new file mode 100644
    index 000000000000..acf44a5d3778
    --- /dev/null
    +++ b/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.txt
    @@ -0,0 +1,275 @@
    + Binding for Xilinx ZynqMP Pinctrl
    +
    +Required properties:
    +- compatible: "xlnx,zynqmp-pinctrl"
    +
    +Please refer to pinctrl-bindings.txt in this directory for details of the
    +common pinctrl bindings used by client devices, including the meaning of the
    +phrase "pin configuration node".
    +
    +ZynqMP's pin configuration nodes act as a container for an arbitrary number of
    +subnodes. Each of these subnodes represents some desired configuration for a
    +pin, a group, or a list of pins or groups. This configuration can include the
    +mux function to select on those pin(s)/group(s), and various pin configuration
    +parameters, such as pull-up, slew rate, etc.
    +
    +Each configuration node can consist of multiple nodes describing the pinmux and
    +pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
    +
    +The name of each subnode is not important; all subnodes should be enumerated
    +and processed purely based on their content.
    +
    +Required properties for pinmux nodes are:
    + - groups: A list of pinmux groups.
    + - function: The name of a pinmux function to activate for the specified set
    + of groups.
    +
    +Required properties for configuration nodes:
    +One of:
    + - pins: A list of pin names
    + - groups: A list of pinmux groups.
    +
    +The following generic properties as defined in pinctrl-bindings.txt are valid
    +to specify in a pinmux subnode:
    + groups, function
    +
    +The following generic properties as defined in pinctrl-bindings.txt are valid
    +to specify in a pinconf subnode:
    + groups, pins, bias-disable, bias-pull-up, bias-pull-down, slew-rate
    +
    + Valid arguments for 'slew-rate' are 'SLEW_RATE_SLOW' and 'SLEW_RATE_FAST' to
    + select between slow and fast respectively.
    +
    + Valid values for groups are:
    + ethernet0_0_grp, ethernet1_0_grp, ethernet2_0_grp,
    + ethernet3_0_grp, gemtsu0_0_grp, gemtsu0_1_grp,
    + gemtsu0_2_grp, mdio0_0_grp, mdio1_0_grp,
    + mdio1_1_grp, mdio2_0_grp, mdio3_0_grp,
    + qspi0_0_grp, qspi_ss_0_grp, qspi_fbclk_0_grp,
    + spi0_0_grp, spi0_ss_0_grp, spi0_ss_1_grp,
    + spi0_ss_2_grp, spi0_1_grp, spi0_ss_3_grp,
    + spi0_ss_4_grp, spi0_ss_5_grp, spi0_2_grp,
    + spi0_ss_6_grp, spi0_ss_7_grp, spi0_ss_8_grp,
    + spi0_3_grp, spi0_ss_9_grp, spi0_ss_10_grp,
    + spi0_ss_11_grp, spi0_4_grp, spi0_ss_12_grp,
    + spi0_ss_13_grp, spi0_ss_14_grp, spi0_5_grp,
    + spi0_ss_15_grp, spi0_ss_16_grp, spi0_ss_17_grp,
    + spi1_0_grp, spi1_ss_0_grp, spi1_ss_1_grp,
    + spi1_ss_2_grp, spi1_1_grp, spi1_ss_3_grp,
    + spi1_ss_4_grp, spi1_ss_5_grp, spi1_2_grp,
    + spi1_ss_6_grp, spi1_ss_7_grp, spi1_ss_8_grp,
    + spi1_3_grp, spi1_ss_9_grp, spi1_ss_10_grp,
    + spi1_ss_11_grp, spi1_4_grp, spi1_ss_12_grp,
    + spi1_ss_13_grp, spi1_ss_14_grp, spi1_5_grp,
    + spi1_ss_15_grp, spi1_ss_16_grp, spi1_ss_17_grp,
    + sdio0_0_grp, sdio0_1_grp, sdio0_2_grp,
    + sdio0_3_grp, sdio0_4_grp, sdio0_5_grp,
    + sdio0_6_grp, sdio0_7_grp, sdio0_8_grp,
    + sdio0_9_grp, sdio0_10_grp, sdio0_11_grp,
    + sdio0_12_grp, sdio0_13_grp, sdio0_14_grp,
    + sdio0_15_grp, sdio0_16_grp, sdio0_17_grp,
    + sdio0_18_grp, sdio0_19_grp, sdio0_20_grp,
    + sdio0_21_grp, sdio0_22_grp, sdio0_23_grp,
    + sdio0_24_grp, sdio0_25_grp, sdio0_26_grp,
    + sdio0_27_grp, sdio0_28_grp, sdio0_29_grp,
    + sdio0_30_grp, sdio0_31_grp, sdio0_32_grp,
    + sdio0_pc_0_grp, sdio0_cd_0_grp, sdio0_wp_0_grp,
    + sdio0_pc_1_grp, sdio0_cd_1_grp, sdio0_wp_1_grp,
    + sdio0_pc_2_grp, sdio0_cd_2_grp, sdio0_wp_2_grp,
    + sdio1_0_grp, sdio1_1_grp, sdio1_2_grp,
    + sdio1_3_grp, sdio1_4_grp, sdio1_5_grp,
    + sdio1_6_grp, sdio1_7_grp, sdio1_8_grp,
    + sdio1_9_grp, sdio1_10_grp, sdio1_11_grp,
    + sdio1_12_grp, sdio1_13_grp, sdio1_14_grp,
    + sdio1_15_grp, sdio1_pc_0_grp, sdio1_cd_0_grp,
    + sdio1_wp_0_grp, sdio1_pc_1_grp, sdio1_cd_1_grp,
    + sdio1_wp_1_grp, nand0_0_grp, nand0_ce_0_grp,
    + nand0_rb_0_grp, nand0_dqs_0_grp, nand0_ce_1_grp,
    + nand0_rb_1_grp, nand0_dqs_1_grp, can0_0_grp,
    + can0_1_grp, can0_2_grp, can0_3_grp,
    + can0_4_grp, can0_5_grp, can0_6_grp,
    + can0_7_grp, can0_8_grp, can0_9_grp,
    + can0_10_grp, can0_11_grp, can0_12_grp,
    + can0_13_grp, can0_14_grp, can0_15_grp,
    + can0_16_grp, can0_17_grp, can0_18_grp,
    + can1_0_grp, can1_1_grp, can1_2_grp,
    + can1_3_grp, can1_4_grp, can1_5_grp,
    + can1_6_grp, can1_7_grp, can1_8_grp,
    + can1_9_grp, can1_10_grp, can1_11_grp,
    + can1_12_grp, can1_13_grp, can1_14_grp,
    + can1_15_grp, can1_16_grp, can1_17_grp,
    + can1_18_grp, can1_19_grp, uart0_0_grp,
    + uart0_1_grp, uart0_2_grp, uart0_3_grp,
    + uart0_4_grp, uart0_5_grp, uart0_6_grp,
    + uart0_7_grp, uart0_8_grp, uart0_9_grp,
    + uart0_10_grp, uart0_11_grp, uart0_12_grp,
    + uart0_13_grp, uart0_14_grp, uart0_15_grp,
    + uart0_16_grp, uart0_17_grp, uart0_18_grp,
    + uart1_0_grp, uart1_1_grp, uart1_2_grp,
    + uart1_3_grp, uart1_4_grp, uart1_5_grp,
    + uart1_6_grp, uart1_7_grp, uart1_8_grp,
    + uart1_9_grp, uart1_10_grp, uart1_11_grp,
    + uart1_12_grp, uart1_13_grp, uart1_14_grp,
    + uart1_15_grp, uart1_16_grp, uart1_17_grp,
    + uart1_18_grp, i2c0_0_grp, i2c0_1_grp,
    + i2c0_2_grp, i2c0_3_grp, i2c0_4_grp,
    + i2c0_5_grp, i2c0_6_grp, i2c0_7_grp,
    + i2c0_8_grp, i2c0_9_grp, i2c0_10_grp,
    + i2c0_11_grp, i2c0_12_grp, i2c0_13_grp,
    + i2c0_14_grp, i2c0_15_grp, i2c0_16_grp,
    + i2c0_17_grp, i2c0_18_grp, i2c1_0_grp,
    + i2c1_1_grp, i2c1_2_grp, i2c1_3_grp,
    + i2c1_4_grp, i2c1_5_grp, i2c1_6_grp,
    + i2c1_7_grp, i2c1_8_grp, i2c1_9_grp,
    + i2c1_10_grp, i2c1_11_grp, i2c1_12_grp,
    + i2c1_13_grp, i2c1_14_grp, i2c1_15_grp,
    + i2c1_16_grp, i2c1_17_grp, i2c1_18_grp,
    + i2c1_19_grp, ttc0_clk_0_grp, ttc0_wav_0_grp,
    + ttc0_clk_1_grp, ttc0_wav_1_grp, ttc0_clk_2_grp,
    + ttc0_wav_2_grp, ttc0_clk_3_grp, ttc0_wav_3_grp,
    + ttc0_clk_4_grp, ttc0_wav_4_grp, ttc0_clk_5_grp,
    + ttc0_wav_5_grp, ttc0_clk_6_grp, ttc0_wav_6_grp,
    + ttc0_clk_7_grp, ttc0_wav_7_grp, ttc0_clk_8_grp,
    + ttc0_wav_8_grp, ttc1_clk_0_grp, ttc1_wav_0_grp,
    + ttc1_clk_1_grp, ttc1_wav_1_grp, ttc1_clk_2_grp,
    + ttc1_wav_2_grp, ttc1_clk_3_grp, ttc1_wav_3_grp,
    + ttc1_clk_4_grp, ttc1_wav_4_grp, ttc1_clk_5_grp,
    + ttc1_wav_5_grp, ttc1_clk_6_grp, ttc1_wav_6_grp,
    + ttc1_clk_7_grp, ttc1_wav_7_grp, ttc1_clk_8_grp,
    + ttc1_wav_8_grp, ttc2_clk_0_grp, ttc2_wav_0_grp,
    + ttc2_clk_1_grp, ttc2_wav_1_grp, ttc2_clk_2_grp,
    + ttc2_wav_2_grp, ttc2_clk_3_grp, ttc2_wav_3_grp,
    + ttc2_clk_4_grp, ttc2_wav_4_grp, ttc2_clk_5_grp,
    + ttc2_wav_5_grp, ttc2_clk_6_grp, ttc2_wav_6_grp,
    + ttc2_clk_7_grp, ttc2_wav_7_grp, ttc2_clk_8_grp,
    + ttc2_wav_8_grp, ttc3_clk_0_grp, ttc3_wav_0_grp,
    + ttc3_clk_1_grp, ttc3_wav_1_grp, ttc3_clk_2_grp,
    + ttc3_wav_2_grp, ttc3_clk_3_grp, ttc3_wav_3_grp,
    + ttc3_clk_4_grp, ttc3_wav_4_grp, ttc3_clk_5_grp,
    + ttc3_wav_5_grp, ttc3_clk_6_grp, ttc3_wav_6_grp,
    + ttc3_clk_7_grp, ttc3_wav_7_grp, ttc3_clk_8_grp,
    + ttc3_wav_8_grp, swdt0_clk_0_grp, swdt0_rst_0_grp,
    + swdt0_clk_1_grp, swdt0_rst_1_grp, swdt0_clk_2_grp,
    + swdt0_rst_2_grp, swdt0_clk_3_grp, swdt0_rst_3_grp,
    + swdt0_clk_4_grp, swdt0_rst_4_grp, swdt0_clk_5_grp,
    + swdt0_rst_5_grp, swdt0_clk_6_grp, swdt0_rst_6_grp,
    + swdt0_clk_7_grp, swdt0_rst_7_grp, swdt0_clk_8_grp,
    + swdt0_rst_8_grp, swdt0_clk_9_grp, swdt0_rst_9_grp,
    + swdt0_clk_10_grp, swdt0_rst_10_grp, swdt0_clk_11_grp,
    + swdt0_rst_11_grp, swdt0_clk_12_grp, swdt0_rst_12_grp,
    + swdt1_clk_0_grp, swdt1_rst_0_grp, swdt1_clk_1_grp,
    + swdt1_rst_1_grp, swdt1_clk_2_grp, swdt1_rst_2_grp,
    + swdt1_clk_3_grp, swdt1_rst_3_grp, swdt1_clk_4_grp,
    + swdt1_rst_4_grp, swdt1_clk_5_grp, swdt1_rst_5_grp,
    + swdt1_clk_6_grp, swdt1_rst_6_grp, swdt1_clk_7_grp,
    + swdt1_rst_7_grp, swdt1_clk_8_grp, swdt1_rst_8_grp,
    + swdt1_clk_9_grp, swdt1_rst_9_grp, swdt1_clk_10_grp,
    + swdt1_rst_10_grp, swdt1_clk_11_grp, swdt1_rst_11_grp,
    + swdt1_clk_12_grp, swdt1_rst_12_grp, gpio0_0_grp,
    + gpio0_1_grp, gpio0_2_grp, gpio0_3_grp,
    + gpio0_4_grp, gpio0_5_grp, gpio0_6_grp,
    + gpio0_7_grp, gpio0_8_grp, gpio0_9_grp,
    + gpio0_10_grp, gpio0_11_grp, gpio0_12_grp,
    + gpio0_13_grp, gpio0_14_grp, gpio0_15_grp,
    + gpio0_16_grp, gpio0_17_grp, gpio0_18_grp,
    + gpio0_19_grp, gpio0_20_grp, gpio0_21_grp,
    + gpio0_22_grp, gpio0_23_grp, gpio0_24_grp,
    + gpio0_25_grp, gpio0_26_grp, gpio0_27_grp,
    + gpio0_28_grp, gpio0_29_grp, gpio0_30_grp,
    + gpio0_31_grp, gpio0_32_grp, gpio0_33_grp,
    + gpio0_34_grp, gpio0_35_grp, gpio0_36_grp,
    + gpio0_37_grp, gpio0_38_grp, gpio0_39_grp,
    + gpio0_40_grp, gpio0_41_grp, gpio0_42_grp,
    + gpio0_43_grp, gpio0_44_grp, gpio0_45_grp,
    + gpio0_46_grp, gpio0_47_grp, gpio0_48_grp,
    + gpio0_49_grp, gpio0_50_grp, gpio0_51_grp,
    + gpio0_52_grp, gpio0_53_grp, gpio0_54_grp,
    + gpio0_55_grp, gpio0_56_grp, gpio0_57_grp,
    + gpio0_58_grp, gpio0_59_grp, gpio0_60_grp,
    + gpio0_61_grp, gpio0_62_grp, gpio0_63_grp,
    + gpio0_64_grp, gpio0_65_grp, gpio0_66_grp,
    + gpio0_67_grp, gpio0_68_grp, gpio0_69_grp,
    + gpio0_70_grp, gpio0_71_grp, gpio0_72_grp,
    + gpio0_73_grp, gpio0_74_grp, gpio0_75_grp,
    + gpio0_76_grp, gpio0_77_grp, usb0_0_grp,
    + usb1_0_grp, pmu0_0_grp, pmu0_1_grp,
    + pmu0_2_grp, pmu0_3_grp, pmu0_4_grp,
    + pmu0_5_grp, pmu0_6_grp, pmu0_7_grp,
    + pmu0_8_grp, pmu0_9_grp, pmu0_10_grp,
    + pmu0_11_grp, pcie0_0_grp, pcie0_1_grp,
    + pcie0_2_grp, pcie0_3_grp, pcie0_4_grp,
    + pcie0_5_grp, pcie0_6_grp, pcie0_7_grp,
    + csu0_0_grp, csu0_1_grp, csu0_2_grp,
    + csu0_3_grp, csu0_4_grp, csu0_5_grp,
    + csu0_6_grp, csu0_7_grp, csu0_8_grp,
    + csu0_9_grp, csu0_10_grp, csu0_11_grp,
    + dpaux0_0_grp, dpaux0_1_grp, dpaux0_2_grp,
    + dpaux0_3_grp, pjtag0_0_grp, pjtag0_1_grp,
    + pjtag0_2_grp, pjtag0_3_grp, pjtag0_4_grp,
    + pjtag0_5_grp, trace0_0_grp, trace0_clk_0_grp,
    + trace0_1_grp, trace0_clk_1_grp, trace0_2_grp,
    + trace0_clk_2_grp, testscan0_0_grp
    +
    + Valid values for pins are:
    + MIO0 - MIO77
    +
    + Valid values for function are:
    + ethernet0, ethernet1, ethernet2, ethernet3, gemtsu0, usb0, usb1, mdio0,
    + mdio1, mdio2, mdio3, qspi0, qspi_fbclk, qspi_ss, spi0, spi1, spi0_ss,
    + spi1_ss, sdio0, sdio0_pc, sdio0_wp, sdio0_cd, sdio1, sdio1_pc, sdio1_wp,
    + sdio1_cd, nand0, nand0_ce, nand0_rb, nand0_dqs, can0, can1, uart0, uart1,
    + i2c0, i2c1, ttc0_clk, ttc0_wav, ttc1_clk, ttc1_wav, ttc2_clk, ttc2_wav,
    + ttc3_clk, ttc3_wav, swdt0_clk, swdt0_rst, swdt1_clk, swdt1_rst, gpio0, pmu0,
    + pcie0, csu0, dpaux0, pjtag0, trace0, trace0_clk, testscan0
    +
    +The following driver-specific properties as defined here are valid to specify in
    +a pin configuration subnode:
    + - io-standard: Configure the pin to use the selected IO standard. Valid
    + arguments are 'IO_STANDARD_LVCMOS33' and 'IO_STANDARD_LVCMOS18'.
    + - schmitt-cmos: Selects either Schmitt or CMOS input for MIO pins. Valid
    + arguments are 'PIN_INPUT_TYPE_SCHMITT' and 'PIN_INPUT_TYPE_CMOS'.
    +
    +Example:
    +
    +firmware {
    + zynqmp_firmware: zynqmp-firmware {
    + compatible = "xlnx,zynqmp-firmware";
    + method = "smc";
    +
    + pinctrl0: pinctrl@ff180000 {
    + compatible = "xlnx,zynqmp-pinctrl";
    +
    + pinctrl_uart1_default: uart1-default {
    + mux {
    + groups = "uart0_4_grp";
    + function = "uart0";
    + };
    +
    + conf {
    + groups = "uart0_4_grp";
    + slew-rate = <SLEW_RATE_SLOW>;
    + io-standard = <IO_STANDARD_LVCMOS18>;
    + };
    +
    + conf-rx {
    + pins = "MIO18";
    + bias-high-impedance;
    + };
    +
    + conf-tx {
    + pins = "MIO19";
    + bias-disable;
    + schmitt-cmos = <PIN_INPUT_TYPE_CMOS>;
    + };
    + };
    + };
    + };
    +};
    +
    +uart1 {
    + ...
    + pinctrl-names = "default";
    + pinctrl-0 = <&pinctrl_uart1_default>;
    + ...
    +
    +};
    --
    2.18.0
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