Hi Rob, Thanks for the review. > -----Original Message----- > From: Rob Herring <robh@xxxxxxxxxx> > Sent: Tuesday, February 9, 2021 7:51 AM > To: Sai Krishna Potthuri <lakshmis@xxxxxxxxxx> > Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>; Michal Simek > <michals@xxxxxxxxxx>; Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>; > linux-arm-kernel@xxxxxxxxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx; > devicetree@xxxxxxxxxxxxxxx; linux-gpio@xxxxxxxxxxxxxxx; git > <git@xxxxxxxxxx>; saikrishna12468@xxxxxxxxx > Subject: Re: [PATCH v2 2/3] dt-bindings: pinctrl: Added binding for ZynqMP > pinctrl driver > > On Tue, Jan 19, 2021 at 10:57:33AM +0530, Sai Krishna Potthuri wrote: > > Added documentation and dt-bindings file which contains MIO pin > > configuration defines for Xilinx ZynqMP pinctrl driver. > > > > Signed-off-by: Sai Krishna Potthuri > > <lakshmi.sai.krishna.potthuri@xxxxxxxxxx> > > --- > > .../bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml | 337 > > ++++++++++++++++++ include/dt-bindings/pinctrl/pinctrl-zynqmp.h | > > 23 ++ > > 2 files changed, 360 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml > > create mode 100644 include/dt-bindings/pinctrl/pinctrl-zynqmp.h > > > > diff --git > > a/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml > > b/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.yaml > > new file mode 100644 > > index 000000000000..9f2efbafcaa4 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/pinctrl/xlnx,zynqmp-pinctrl.ya > > +++ ml > > @@ -0,0 +1,337 @@ > > +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause %YAML 1.2 > > +--- > > +$id: http://devicetree.org/schemas/pinctrl/xlnx,zynqmp-pinctrl.yaml# > > +$schema: http://devicetree.org/meta-schemas/core.yaml# > > + > > +title: Xilinx ZynqMP Pinctrl > > + > > +maintainers: > > + - Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xxxxxxxxxx> > > + - Rajan Vaja <rajan.vaja@xxxxxxxxxx> > > + > > +description: | > > + 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. > > + > > +properties: > > + compatible: > > + const: xlnx,zynqmp-pinctrl > > + > > +patternProperties: > > + '^(.*-)?(default|gpio)$': > > + type: object > > + patternProperties: > > + '^mux(.*)$': > > '^mux' is equivalent. I will fix in v3. > > > + type: object > > + description: > > + Pinctrl node's client devices use subnodes for pin muxes, > > + which in turn use below standard properties. > > + $ref: pinmux-node.yaml# > > + > > + properties: > > + groups: > > + description: > > + List of groups to select (either this or "pins" must be > > + specified), available groups for this subnode. > > + items: > > + oneOf: > > + - enum: [ethernet0_0_grp, ethernet1_0_grp, > > + ethernet2_0_grp, > > Don't need 'oneOf' for a single item. Here we have a possibility to have more than one group item as below, hence used 'oneOf'. groups = "uart0_4_grp", "uart0_5_grp"; Please suggest me if there is a better/another way to represent this. > > > + 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] > > + > > + function: > > + description: > > + Specify the alternative function to be configured for the > > + given pin groups. > > + enum: [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] > > + > > + required: > > + - groups > > + - function > > + > > + additionalProperties: false > > + > > + '^conf(.*)$': > > '^conf': I will fix in v3. > > > + type: object > > + description: > > + Pinctrl node's client devices use subnodes for pin configurations, > > + which in turn use the standard properties below. > > + $ref: pincfg-node.yaml# > > + > > + properties: > > + groups: > > + description: > > + List of pin groups as mentioned above (either this or "pins" must > > + be specified). > > + > > + pins: > > + description: > > + List of pin names to select in this subnode (either this or "groups" > must > > + be specified) > > This can be expressed as: > > oneOf: > - required: [ groups ] > - required: [ pins ] I will use this in v3. > > > + items: > > + oneOf: > > Can drop oneOf. Similar to groups, we can have more than one pin item as below pins = "MIO52", "MIO53", "MIO55" Please suggest me if there is a better/another way to represent this. > > > + - pattern: '^MIO([0-9]|[1-6][0-9]|7[0-7])$' > > + > > + bias-pull-up: true > > + > > + bias-pull-down: true > > + > > + bias-disable: true > > + > > + input-schmitt-enable: true > > + > > + input-schmitt-disable: true > > + > > + bias-high-impedance: true > > + > > + low-power-enable: true > > + > > + low-power-disable: true > > + > > + slew-rate: > > + enum: [0, 1] > > + > > + drive-strength: > > + description: > > + Selects the drive strength for MIO pins, in mA. > > + enum: [2, 4, 8, 12] > > + > > + io-standard: > > + description: > > + Selects the IO standard for MIO pins, this is driver specific. > > + $ref: "/schemas/types.yaml#/definitions/uint32" > > + enum: [0, 1] > > + > > + additionalProperties: false > > + > > + additionalProperties: false > > + > > +required: > > + - compatible > > + > > +additionalProperties: false > > + > > +examples: > > + - | > > + #include <dt-bindings/pinctrl/pinctrl-zynqmp.h> > > + zynqmp_firmware: zynqmp-firmware { > > + pinctrl0: pinctrl { > > + compatible = "xlnx,zynqmp-pinctrl"; > > + > > + pinctrl_uart1_default: uart1-default { > > + mux { > > + groups = "uart0_4_grp", "uart0_5_grp"; > > + function = "uart0"; > > + }; > > + > > + conf { > > + groups = "uart0_4_grp"; > > + slew-rate = <SLEW_RATE_SLOW>; > > + io-standard = <IO_STANDARD_LVCMOS18>; > > + }; > > + > > + conf-rx { > > + pins = "MIO18"; > > + bias-pull-up; > > + }; > > + > > + conf-tx { > > + pins = "MIO19"; > > + bias-disable; > > + input-schmitt-disable; > > + }; > > + }; > > + }; > > + }; > > + > > + uart1 { > > + pinctrl-names = "default"; > > + pinctrl-0 = <&pinctrl_uart1_default>; > > + }; > > + > > +... > > diff --git a/include/dt-bindings/pinctrl/pinctrl-zynqmp.h > > b/include/dt-bindings/pinctrl/pinctrl-zynqmp.h > > new file mode 100644 > > index 000000000000..b73b0ae2f90b > > --- /dev/null > > +++ b/include/dt-bindings/pinctrl/pinctrl-zynqmp.h > > @@ -0,0 +1,23 @@ > > +/* SPDX-License-Identifier: GPL-2.0 */ > > +/* > > + * MIO pin configuration defines for Xilinx ZynqMP > > + * > > + * Copyright (C) 2020 Xilinx, Inc. > > + */ > > + > > +#ifndef _DT_BINDINGS_PINCTRL_ZYNQMP_H #define > > +_DT_BINDINGS_PINCTRL_ZYNQMP_H > > + > > +/* Bit value for IO standards */ > > +#define IO_STANDARD_LVCMOS33 0 > > +#define IO_STANDARD_LVCMOS18 1 > > + > > +/* Bit values for Slew Rates */ > > +#define SLEW_RATE_FAST 0 > > +#define SLEW_RATE_SLOW 1 > > + > > +/* Bit values for Pin inputs */ > > +#define PIN_INPUT_TYPE_CMOS 0 > > +#define PIN_INPUT_TYPE_SCHMITT 1 > > Still used? I will fix in v3. Regards Sai Krishna > > > + > > +#endif /* _DT_BINDINGS_PINCTRL_ZYNQMP_H */ > > -- > > 2.17.1 > >
