mirror of https://gitee.com/openkylin/linux.git
dt-binding: pinctrl: Add NPCM7xx pinctrl and GPIO documentation
Added device tree binding documentation for Nuvoton BMC NPCM750/730/715/705 pinmux and GPIO controller. Signed-off-by: Tomer Maimon <tmaimon77@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Tomer Maimon
Linus Walleij
parent
fe2731211e
commit
d0e4e8f0d6
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Nuvoton NPCM7XX Pin Controllers
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The Nuvoton BMC NPCM7XX Pin Controller multi-function routed through
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the multiplexing block, Each pin supports GPIO functionality (GPIOx)
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and multiple functions that directly connect the pin to different
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hardware blocks.
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Required properties:
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- #address-cells : should be 1.
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- #size-cells : should be 1.
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- compatible : "nuvoton,npcm750-pinctrl" for Poleg NPCM7XX.
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- ranges : defines mapping ranges between pin controller node (parent)
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to GPIO bank node (children).
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=== GPIO Bank Subnode ===
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The NPCM7XX has 8 GPIO Banks each GPIO bank supports 32 GPIO.
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Required GPIO Bank subnode-properties:
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- reg : specifies physical base address and size of the GPIO
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bank registers.
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- gpio-controller : Marks the device node as a GPIO controller.
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- #gpio-cells : Must be <2>. The first cell is the gpio pin number
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and the second cell is used for optional parameters.
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- interrupts : contain the GPIO bank interrupt with flags for falling edge.
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- gpio-ranges : defines the range of pins managed by the GPIO bank controller.
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For example, GPIO bank subnodes like the following:
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gpio0: gpio@f0010000 {
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gpio-controller;
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#gpio-cells = <2>;
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reg = <0x0 0x80>;
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interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
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gpio-ranges = <&pinctrl 0 0 32>;
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};
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=== Pin Mux Subnode ===
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- pin: A string containing the name of the pin
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An array of strings, each string containing the name of a pin.
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These pin are used for selecting pin configuration.
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The following are the list of pins available:
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"GPIO0/IOX1DI", "GPIO1/IOX1LD", "GPIO2/IOX1CK", "GPIO3/IOX1D0",
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"GPIO4/IOX2DI/SMB1DSDA", "GPIO5/IOX2LD/SMB1DSCL", "GPIO6/IOX2CK/SMB2DSDA",
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"GPIO7/IOX2D0/SMB2DSCL", "GPIO8/LKGPO1", "GPIO9/LKGPO2", "GPIO10/IOXHLD",
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"GPIO11/IOXHCK", "GPIO12/GSPICK/SMB5BSCL", "GPIO13/GSPIDO/SMB5BSDA",
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"GPIO14/GSPIDI/SMB5CSCL", "GPIO15/GSPICS/SMB5CSDA", "GPIO16/LKGPO0",
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"GPIO17/PSPI2DI/SMB4DEN","GPIO18/PSPI2D0/SMB4BSDA", "GPIO19/PSPI2CK/SMB4BSCL",
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"GPIO20/SMB4CSDA/SMB15SDA", "GPIO21/SMB4CSCL/SMB15SCL", "GPIO22/SMB4DSDA/SMB14SDA",
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"GPIO23/SMB4DSCL/SMB14SCL", "GPIO24/IOXHDO", "GPIO25/IOXHDI", "GPIO26/SMB5SDA",
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"GPIO27/SMB5SCL", "GPIO28/SMB4SDA", "GPIO29/SMB4SCL", "GPIO30/SMB3SDA",
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"GPIO31/SMB3SCL", "GPIO32/nSPI0CS1","SPI0D2", "SPI0D3", "GPIO37/SMB3CSDA",
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"GPIO38/SMB3CSCL", "GPIO39/SMB3BSDA", "GPIO40/SMB3BSCL", "GPIO41/BSPRXD",
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"GPO42/BSPTXD/STRAP11", "GPIO43/RXD1/JTMS2/BU1RXD", "GPIO44/nCTS1/JTDI2/BU1CTS",
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"GPIO45/nDCD1/JTDO2", "GPIO46/nDSR1/JTCK2", "GPIO47/nRI1/JCP_RDY2",
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"GPIO48/TXD2/BSPTXD", "GPIO49/RXD2/BSPRXD", "GPIO50/nCTS2", "GPO51/nRTS2/STRAP2",
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"GPIO52/nDCD2", "GPO53/nDTR2_BOUT2/STRAP1", "GPIO54/nDSR2", "GPIO55/nRI2",
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"GPIO56/R1RXERR", "GPIO57/R1MDC", "GPIO58/R1MDIO", "GPIO59/SMB3DSDA",
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"GPIO60/SMB3DSCL", "GPO61/nDTR1_BOUT1/STRAP6", "GPO62/nRTST1/STRAP5",
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"GPO63/TXD1/STRAP4", "GPIO64/FANIN0", "GPIO65/FANIN1", "GPIO66/FANIN2",
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"GPIO67/FANIN3", "GPIO68/FANIN4", "GPIO69/FANIN5", "GPIO70/FANIN6", "GPIO71/FANIN7",
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"GPIO72/FANIN8", "GPIO73/FANIN9", "GPIO74/FANIN10", "GPIO75/FANIN11",
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"GPIO76/FANIN12", "GPIO77/FANIN13","GPIO78/FANIN14", "GPIO79/FANIN15",
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"GPIO80/PWM0", "GPIO81/PWM1", "GPIO82/PWM2", "GPIO83/PWM3", "GPIO84/R2TXD0",
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"GPIO85/R2TXD1", "GPIO86/R2TXEN", "GPIO87/R2RXD0", "GPIO88/R2RXD1", "GPIO89/R2CRSDV",
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"GPIO90/R2RXERR", "GPIO91/R2MDC", "GPIO92/R2MDIO", "GPIO93/GA20/SMB5DSCL",
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"GPIO94/nKBRST/SMB5DSDA", "GPIO95/nLRESET/nESPIRST", "GPIO96/RG1TXD0",
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"GPIO97/RG1TXD1", "GPIO98/RG1TXD2", "GPIO99/RG1TXD3","GPIO100/RG1TXC",
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"GPIO101/RG1TXCTL", "GPIO102/RG1RXD0", "GPIO103/RG1RXD1", "GPIO104/RG1RXD2",
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"GPIO105/RG1RXD3", "GPIO106/RG1RXC", "GPIO107/RG1RXCTL", "GPIO108/RG1MDC",
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"GPIO109/RG1MDIO", "GPIO110/RG2TXD0/DDRV0", "GPIO111/RG2TXD1/DDRV1",
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"GPIO112/RG2TXD2/DDRV2", "GPIO113/RG2TXD3/DDRV3", "GPIO114/SMB0SCL",
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"GPIO115/SMB0SDA", "GPIO116/SMB1SCL", "GPIO117/SMB1SDA", "GPIO118/SMB2SCL",
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"GPIO119/SMB2SDA", "GPIO120/SMB2CSDA", "GPIO121/SMB2CSCL", "GPIO122/SMB2BSDA",
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"GPIO123/SMB2BSCL", "GPIO124/SMB1CSDA", "GPIO125/SMB1CSCL","GPIO126/SMB1BSDA",
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"GPIO127/SMB1BSCL", "GPIO128/SMB8SCL", "GPIO129/SMB8SDA", "GPIO130/SMB9SCL",
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"GPIO131/SMB9SDA", "GPIO132/SMB10SCL", "GPIO133/SMB10SDA","GPIO134/SMB11SCL",
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"GPIO135/SMB11SDA", "GPIO136/SD1DT0", "GPIO137/SD1DT1", "GPIO138/SD1DT2",
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"GPIO139/SD1DT3", "GPIO140/SD1CLK", "GPIO141/SD1WP", "GPIO142/SD1CMD",
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"GPIO143/SD1CD/SD1PWR", "GPIO144/PWM4", "GPIO145/PWM5", "GPIO146/PWM6",
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"GPIO147/PWM7", "GPIO148/MMCDT4", "GPIO149/MMCDT5", "GPIO150/MMCDT6",
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"GPIO151/MMCDT7", "GPIO152/MMCCLK", "GPIO153/MMCWP", "GPIO154/MMCCMD",
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"GPIO155/nMMCCD/nMMCRST", "GPIO156/MMCDT0", "GPIO157/MMCDT1", "GPIO158/MMCDT2",
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"GPIO159/MMCDT3", "GPIO160/CLKOUT/RNGOSCOUT", "GPIO161/nLFRAME/nESPICS",
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"GPIO162/SERIRQ", "GPIO163/LCLK/ESPICLK", "GPIO164/LAD0/ESPI_IO0",
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"GPIO165/LAD1/ESPI_IO1", "GPIO166/LAD2/ESPI_IO2", "GPIO167/LAD3/ESPI_IO3",
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"GPIO168/nCLKRUN/nESPIALERT", "GPIO169/nSCIPME", "GPIO170/nSMI", "GPIO171/SMB6SCL",
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"GPIO172/SMB6SDA", "GPIO173/SMB7SCL", "GPIO174/SMB7SDA", "GPIO175/PSPI1CK/FANIN19",
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"GPIO176/PSPI1DO/FANIN18", "GPIO177/PSPI1DI/FANIN17", "GPIO178/R1TXD0",
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"GPIO179/R1TXD1", "GPIO180/R1TXEN", "GPIO181/R1RXD0", "GPIO182/R1RXD1",
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"GPIO183/SPI3CK", "GPO184/SPI3D0/STRAP9", "GPO185/SPI3D1/STRAP10",
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"GPIO186/nSPI3CS0", "GPIO187/nSPI3CS1", "GPIO188/SPI3D2/nSPI3CS2",
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"GPIO189/SPI3D3/nSPI3CS3", "GPIO190/nPRD_SMI", "GPIO191", "GPIO192", "GPIO193/R1CRSDV",
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"GPIO194/SMB0BSCL", "GPIO195/SMB0BSDA", "GPIO196/SMB0CSCL", "GPIO197/SMB0DEN",
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"GPIO198/SMB0DSDA", "GPIO199/SMB0DSCL", "GPIO200/R2CK", "GPIO201/R1CK",
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"GPIO202/SMB0CSDA", "GPIO203/FANIN16", "GPIO204/DDC2SCL", "GPIO205/DDC2SDA",
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"GPIO206/HSYNC2", "GPIO207/VSYNC2", "GPIO208/RG2TXC/DVCK", "GPIO209/RG2TXCTL/DDRV4",
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"GPIO210/RG2RXD0/DDRV5", "GPIO211/RG2RXD1/DDRV6", "GPIO212/RG2RXD2/DDRV7",
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"GPIO213/RG2RXD3/DDRV8", "GPIO214/RG2RXC/DDRV9", "GPIO215/RG2RXCTL/DDRV10",
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"GPIO216/RG2MDC/DDRV11", "GPIO217/RG2MDIO/DVHSYNC", "GPIO218/nWDO1",
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"GPIO219/nWDO2", "GPIO220/SMB12SCL", "GPIO221/SMB12SDA", "GPIO222/SMB13SCL",
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"GPIO223/SMB13SDA", "GPIO224/SPIXCK", "GPO225/SPIXD0/STRAP12", "GPO226/SPIXD1/STRAP13",
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"GPIO227/nSPIXCS0", "GPIO228/nSPIXCS1", "GPO229/SPIXD2/STRAP3", "GPIO230/SPIXD3",
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"GPIO231/nCLKREQ", "GPI255/DACOSEL"
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Optional Properties:
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bias-disable, bias-pull-down, bias-pull-up, input-enable,
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input-disable, output-high, output-low, drive-push-pull,
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drive-open-drain, input-debounce, slew-rate, drive-strength
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slew-rate valid arguments are:
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<0> - slow
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<1> - fast
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drive-strength valid arguments are:
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<2> - 2mA
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<4> - 4mA
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<8> - 8mA
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<12> - 12mA
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<16> - 16mA
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<24> - 24mA
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For example, pinctrl might have pinmux subnodes like the following:
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gpio0_iox1d1_pin: gpio0-iox1d1-pin {
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pins = "GPIO0/IOX1DI";
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output-high;
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};
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gpio0_iox1ck_pin: gpio0-iox1ck-pin {
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pins = "GPIO2/IOX1CK";
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output_high;
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};
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=== Pin Group Subnode ===
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Required pin group subnode-properties:
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- groups : A string containing the name of the group to mux.
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- function: A string containing the name of the function to mux to the
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group.
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The following are the list of the available groups and functions :
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smb0, smb0b, smb0c, smb0d, smb0den, smb1, smb1b, smb1c, smb1d,
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smb2, smb2b, smb2c, smb2d, smb3, smb3b, smb3c, smb3d, smb4, smb4b,
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smb4c, smb4d, smb4den, smb5, smb5b, smb5c, smb5d, ga20kbc, smb6,
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smb7, smb8, smb9, smb10, smb11, smb12, smb13, smb14, smb15, fanin0,
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fanin1, fanin2, fanin3, fanin4, fanin5, fanin6, fanin7, fanin8,
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fanin9, fanin10, fanin11 fanin12 fanin13, fanin14, fanin15, faninx,
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pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, pwm6, pwm7, rg1, rg1mdio, rg2,
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rg2mdio, ddr, uart1, uart2, bmcuart0a, bmcuart0b, bmcuart1, iox1,
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iox2, ioxh, gspi, mmc, mmcwp, mmccd, mmcrst, mmc8, r1, r1err, r1md,
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r2, r2err, r2md, sd1, sd1pwr, wdog1, wdog2, scipme, sci, serirq,
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jtag2, spix, spixcs1, pspi1, pspi2, ddc, clkreq, clkout, spi3, spi3cs1,
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spi3quad, spi3cs2, spi3cs3, spi0cs1, lpc, lpcclk, espi, lkgpo0, lkgpo1,
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lkgpo2, nprd_smi
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For example, pinctrl might have group subnodes like the following:
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r1err_pins: r1err-pins {
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groups = "r1err";
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function = "r1err";
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};
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r1md_pins: r1md-pins {
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groups = "r1md";
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function = "r1md";
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};
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r1_pins: r1-pins {
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groups = "r1";
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function = "r1";
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};
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Examples
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========
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pinctrl: pinctrl@f0800000 {
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#address-cells = <1>;
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#size-cells = <1>;
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compatible = "nuvoton,npcm750-pinctrl";
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ranges = <0 0xf0010000 0x8000>;
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gpio0: gpio@f0010000 {
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gpio-controller;
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#gpio-cells = <2>;
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reg = <0x0 0x80>;
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interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
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gpio-ranges = <&pinctrl 0 0 32>;
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};
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....
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gpio7: gpio@f0017000 {
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gpio-controller;
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#gpio-cells = <2>;
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reg = <0x7000 0x80>;
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interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
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gpio-ranges = <&pinctrl 0 224 32>;
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};
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gpio0_iox1d1_pin: gpio0-iox1d1-pin {
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pins = "GPIO0/IOX1DI";
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output-high;
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};
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iox1_pins: iox1-pins {
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groups = "iox1";
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function = "iox1";
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};
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iox2_pins: iox2-pins {
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groups = "iox2";
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function = "iox2";
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};
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....
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clkreq_pins: clkreq-pins {
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groups = "clkreq";
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function = "clkreq";
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};
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};
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