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Subject[PATCH v6 1/2] dt-binding: pinctrl: Add NPCM7xx pinctrl and GPIO documentation
Date
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>
---
.../bindings/pinctrl/nuvoton,npcm7xx-pinctrl.txt | 216 +++++++++++++++++++++
1 file changed, 216 insertions(+)
create mode 100644 Documentation/devicetree/bindings/pinctrl/nuvoton,npcm7xx-pinctrl.txt

diff --git a/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm7xx-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm7xx-pinctrl.txt
new file mode 100644
index 000000000000..83f4bbac94bb
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/nuvoton,npcm7xx-pinctrl.txt
@@ -0,0 +1,216 @@
+Nuvoton NPCM7XX Pin Controllers
+
+The Nuvoton BMC NPCM7XX Pin Controller multi-function routed through
+the multiplexing block, Each pin supports GPIO functionality (GPIOx)
+and multiple functions that directly connect the pin to different
+hardware blocks.
+
+Required properties:
+- #address-cells : should be 1.
+- #size-cells : should be 1.
+- compatible : "nuvoton,npcm750-pinctrl" for Poleg NPCM7XX.
+- ranges : defines mapping ranges between pin controller node (parent)
+ to GPIO bank node (children).
+
+=== GPIO Bank Subnode ===
+
+The NPCM7XX has 8 GPIO Banks each GPIO bank supports 32 GPIO.
+
+Required GPIO Bank subnode-properties:
+- reg : specifies physical base address and size of the GPIO
+ bank registers.
+- gpio-controller : Marks the device node as a GPIO controller.
+- #gpio-cells : Must be <2>. The first cell is the gpio pin number
+ and the second cell is used for optional parameters.
+- interrupts : contain the GPIO bank interrupt with flags for falling edge.
+- gpio-ranges : defines the range of pins managed by the GPIO bank controller.
+
+For example, GPIO bank subnodes like the following:
+ gpio0: gpio@f0010000 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x0 0x80>;
+ interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-ranges = <&pinctrl 0 0 32>;
+ };
+
+=== Pin Mux Subnode ===
+
+- pin: A string containing the name of the pin
+ An array of strings, each string containing the name of a pin.
+ These pin are used for selecting pin configuration.
+
+The following are the list of pins available:
+ "GPIO0/IOX1DI", "GPIO1/IOX1LD", "GPIO2/IOX1CK", "GPIO3/IOX1D0",
+ "GPIO4/IOX2DI/SMB1DSDA", "GPIO5/IOX2LD/SMB1DSCL", "GPIO6/IOX2CK/SMB2DSDA",
+ "GPIO7/IOX2D0/SMB2DSCL", "GPIO8/LKGPO1", "GPIO9/LKGPO2", "GPIO10/IOXHLD",
+ "GPIO11/IOXHCK", "GPIO12/GSPICK/SMB5BSCL", "GPIO13/GSPIDO/SMB5BSDA",
+ "GPIO14/GSPIDI/SMB5CSCL", "GPIO15/GSPICS/SMB5CSDA", "GPIO16/LKGPO0",
+ "GPIO17/PSPI2DI/SMB4DEN","GPIO18/PSPI2D0/SMB4BSDA", "GPIO19/PSPI2CK/SMB4BSCL",
+ "GPIO20/SMB4CSDA/SMB15SDA", "GPIO21/SMB4CSCL/SMB15SCL", "GPIO22/SMB4DSDA/SMB14SDA",
+ "GPIO23/SMB4DSCL/SMB14SCL", "GPIO24/IOXHDO", "GPIO25/IOXHDI", "GPIO26/SMB5SDA",
+ "GPIO27/SMB5SCL", "GPIO28/SMB4SDA", "GPIO29/SMB4SCL", "GPIO30/SMB3SDA",
+ "GPIO31/SMB3SCL", "GPIO32/nSPI0CS1","SPI0D2", "SPI0D3", "GPIO37/SMB3CSDA",
+ "GPIO38/SMB3CSCL", "GPIO39/SMB3BSDA", "GPIO40/SMB3BSCL", "GPIO41/BSPRXD",
+ "GPO42/BSPTXD/STRAP11", "GPIO43/RXD1/JTMS2/BU1RXD", "GPIO44/nCTS1/JTDI2/BU1CTS",
+ "GPIO45/nDCD1/JTDO2", "GPIO46/nDSR1/JTCK2", "GPIO47/nRI1/JCP_RDY2",
+ "GPIO48/TXD2/BSPTXD", "GPIO49/RXD2/BSPRXD", "GPIO50/nCTS2", "GPO51/nRTS2/STRAP2",
+ "GPIO52/nDCD2", "GPO53/nDTR2_BOUT2/STRAP1", "GPIO54/nDSR2", "GPIO55/nRI2",
+ "GPIO56/R1RXERR", "GPIO57/R1MDC", "GPIO58/R1MDIO", "GPIO59/SMB3DSDA",
+ "GPIO60/SMB3DSCL", "GPO61/nDTR1_BOUT1/STRAP6", "GPO62/nRTST1/STRAP5",
+ "GPO63/TXD1/STRAP4", "GPIO64/FANIN0", "GPIO65/FANIN1", "GPIO66/FANIN2",
+ "GPIO67/FANIN3", "GPIO68/FANIN4", "GPIO69/FANIN5", "GPIO70/FANIN6", "GPIO71/FANIN7",
+ "GPIO72/FANIN8", "GPIO73/FANIN9", "GPIO74/FANIN10", "GPIO75/FANIN11",
+ "GPIO76/FANIN12", "GPIO77/FANIN13","GPIO78/FANIN14", "GPIO79/FANIN15",
+ "GPIO80/PWM0", "GPIO81/PWM1", "GPIO82/PWM2", "GPIO83/PWM3", "GPIO84/R2TXD0",
+ "GPIO85/R2TXD1", "GPIO86/R2TXEN", "GPIO87/R2RXD0", "GPIO88/R2RXD1", "GPIO89/R2CRSDV",
+ "GPIO90/R2RXERR", "GPIO91/R2MDC", "GPIO92/R2MDIO", "GPIO93/GA20/SMB5DSCL",
+ "GPIO94/nKBRST/SMB5DSDA", "GPIO95/nLRESET/nESPIRST", "GPIO96/RG1TXD0",
+ "GPIO97/RG1TXD1", "GPIO98/RG1TXD2", "GPIO99/RG1TXD3","GPIO100/RG1TXC",
+ "GPIO101/RG1TXCTL", "GPIO102/RG1RXD0", "GPIO103/RG1RXD1", "GPIO104/RG1RXD2",
+ "GPIO105/RG1RXD3", "GPIO106/RG1RXC", "GPIO107/RG1RXCTL", "GPIO108/RG1MDC",
+ "GPIO109/RG1MDIO", "GPIO110/RG2TXD0/DDRV0", "GPIO111/RG2TXD1/DDRV1",
+ "GPIO112/RG2TXD2/DDRV2", "GPIO113/RG2TXD3/DDRV3", "GPIO114/SMB0SCL",
+ "GPIO115/SMB0SDA", "GPIO116/SMB1SCL", "GPIO117/SMB1SDA", "GPIO118/SMB2SCL",
+ "GPIO119/SMB2SDA", "GPIO120/SMB2CSDA", "GPIO121/SMB2CSCL", "GPIO122/SMB2BSDA",
+ "GPIO123/SMB2BSCL", "GPIO124/SMB1CSDA", "GPIO125/SMB1CSCL","GPIO126/SMB1BSDA",
+ "GPIO127/SMB1BSCL", "GPIO128/SMB8SCL", "GPIO129/SMB8SDA", "GPIO130/SMB9SCL",
+ "GPIO131/SMB9SDA", "GPIO132/SMB10SCL", "GPIO133/SMB10SDA","GPIO134/SMB11SCL",
+ "GPIO135/SMB11SDA", "GPIO136/SD1DT0", "GPIO137/SD1DT1", "GPIO138/SD1DT2",
+ "GPIO139/SD1DT3", "GPIO140/SD1CLK", "GPIO141/SD1WP", "GPIO142/SD1CMD",
+ "GPIO143/SD1CD/SD1PWR", "GPIO144/PWM4", "GPIO145/PWM5", "GPIO146/PWM6",
+ "GPIO147/PWM7", "GPIO148/MMCDT4", "GPIO149/MMCDT5", "GPIO150/MMCDT6",
+ "GPIO151/MMCDT7", "GPIO152/MMCCLK", "GPIO153/MMCWP", "GPIO154/MMCCMD",
+ "GPIO155/nMMCCD/nMMCRST", "GPIO156/MMCDT0", "GPIO157/MMCDT1", "GPIO158/MMCDT2",
+ "GPIO159/MMCDT3", "GPIO160/CLKOUT/RNGOSCOUT", "GPIO161/nLFRAME/nESPICS",
+ "GPIO162/SERIRQ", "GPIO163/LCLK/ESPICLK", "GPIO164/LAD0/ESPI_IO0",
+ "GPIO165/LAD1/ESPI_IO1", "GPIO166/LAD2/ESPI_IO2", "GPIO167/LAD3/ESPI_IO3",
+ "GPIO168/nCLKRUN/nESPIALERT", "GPIO169/nSCIPME", "GPIO170/nSMI", "GPIO171/SMB6SCL",
+ "GPIO172/SMB6SDA", "GPIO173/SMB7SCL", "GPIO174/SMB7SDA", "GPIO175/PSPI1CK/FANIN19",
+ "GPIO176/PSPI1DO/FANIN18", "GPIO177/PSPI1DI/FANIN17", "GPIO178/R1TXD0",
+ "GPIO179/R1TXD1", "GPIO180/R1TXEN", "GPIO181/R1RXD0", "GPIO182/R1RXD1",
+ "GPIO183/SPI3CK", "GPO184/SPI3D0/STRAP9", "GPO185/SPI3D1/STRAP10",
+ "GPIO186/nSPI3CS0", "GPIO187/nSPI3CS1", "GPIO188/SPI3D2/nSPI3CS2",
+ "GPIO189/SPI3D3/nSPI3CS3", "GPIO190/nPRD_SMI", "GPIO191", "GPIO192", "GPIO193/R1CRSDV",
+ "GPIO194/SMB0BSCL", "GPIO195/SMB0BSDA", "GPIO196/SMB0CSCL", "GPIO197/SMB0DEN",
+ "GPIO198/SMB0DSDA", "GPIO199/SMB0DSCL", "GPIO200/R2CK", "GPIO201/R1CK",
+ "GPIO202/SMB0CSDA", "GPIO203/FANIN16", "GPIO204/DDC2SCL", "GPIO205/DDC2SDA",
+ "GPIO206/HSYNC2", "GPIO207/VSYNC2", "GPIO208/RG2TXC/DVCK", "GPIO209/RG2TXCTL/DDRV4",
+ "GPIO210/RG2RXD0/DDRV5", "GPIO211/RG2RXD1/DDRV6", "GPIO212/RG2RXD2/DDRV7",
+ "GPIO213/RG2RXD3/DDRV8", "GPIO214/RG2RXC/DDRV9", "GPIO215/RG2RXCTL/DDRV10",
+ "GPIO216/RG2MDC/DDRV11", "GPIO217/RG2MDIO/DVHSYNC", "GPIO218/nWDO1",
+ "GPIO219/nWDO2", "GPIO220/SMB12SCL", "GPIO221/SMB12SDA", "GPIO222/SMB13SCL",
+ "GPIO223/SMB13SDA", "GPIO224/SPIXCK", "GPO225/SPIXD0/STRAP12", "GPO226/SPIXD1/STRAP13",
+ "GPIO227/nSPIXCS0", "GPIO228/nSPIXCS1", "GPO229/SPIXD2/STRAP3", "GPIO230/SPIXD3",
+ "GPIO231/nCLKREQ", "GPI255/DACOSEL"
+
+Optional Properties:
+ bias-disable, bias-pull-down, bias-pull-up, input-enable,
+ input-disable, output-high, output-low, drive-push-pull,
+ drive-open-drain, input-debounce, slew-rate, drive-strength
+
+ slew-rate valid arguments are:
+ <0> - slow
+ <1> - fast
+ drive-strength valid arguments are:
+ <2> - 2mA
+ <4> - 4mA
+ <8> - 8mA
+ <12> - 12mA
+ <16> - 16mA
+ <24> - 24mA
+
+For example, pinctrl might have pinmux subnodes like the following:
+
+ gpio0_iox1d1_pin: gpio0-iox1d1-pin {
+ pins = "GPIO0/IOX1DI";
+ output-high;
+ };
+ gpio0_iox1ck_pin: gpio0-iox1ck-pin {
+ pins = "GPIO2/IOX1CK";
+ output_high;
+ };
+
+=== Pin Group Subnode ===
+
+Required pin group subnode-properties:
+- groups : A string containing the name of the group to mux.
+- function: A string containing the name of the function to mux to the
+ group.
+
+The following are the list of the available groups and functions :
+ smb0, smb0b, smb0c, smb0d, smb0den, smb1, smb1b, smb1c, smb1d,
+ smb2, smb2b, smb2c, smb2d, smb3, smb3b, smb3c, smb3d, smb4, smb4b,
+ smb4c, smb4d, smb4den, smb5, smb5b, smb5c, smb5d, ga20kbc, smb6,
+ smb7, smb8, smb9, smb10, smb11, smb12, smb13, smb14, smb15, fanin0,
+ fanin1, fanin2, fanin3, fanin4, fanin5, fanin6, fanin7, fanin8,
+ fanin9, fanin10, fanin11 fanin12 fanin13, fanin14, fanin15, faninx,
+ pwm0, pwm1, pwm2, pwm3, pwm4, pwm5, pwm6, pwm7, rg1, rg1mdio, rg2,
+ rg2mdio, ddr, uart1, uart2, bmcuart0a, bmcuart0b, bmcuart1, iox1,
+ iox2, ioxh, gspi, mmc, mmcwp, mmccd, mmcrst, mmc8, r1, r1err, r1md,
+ r2, r2err, r2md, sd1, sd1pwr, wdog1, wdog2, scipme, sci, serirq,
+ jtag2, spix, spixcs1, pspi1, pspi2, ddc, clkreq, clkout, spi3, spi3cs1,
+ spi3quad, spi3cs2, spi3cs3, spi0cs1, lpc, lpcclk, espi, lkgpo0, lkgpo1,
+ lkgpo2, nprd_smi
+
+For example, pinctrl might have group subnodes like the following:
+ r1err_pins: r1err-pins {
+ groups = "r1err";
+ function = "r1err";
+ };
+ r1md_pins: r1md-pins {
+ groups = "r1md";
+ function = "r1md";
+ };
+ r1_pins: r1-pins {
+ groups = "r1";
+ function = "r1";
+ };
+
+Examples
+========
+pinctrl: pinctrl@f0800000 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "nuvoton,npcm750-pinctrl";
+ ranges = <0 0xf0010000 0x8000>;
+
+ gpio0: gpio@f0010000 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x0 0x80>;
+ interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-ranges = <&pinctrl 0 0 32>;
+ };
+
+ ....
+
+ gpio7: gpio@f0017000 {
+ gpio-controller;
+ #gpio-cells = <2>;
+ reg = <0x7000 0x80>;
+ interrupts = <GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>;
+ gpio-ranges = <&pinctrl 0 224 32>;
+ };
+
+ gpio0_iox1d1_pin: gpio0-iox1d1-pin {
+ pins = "GPIO0/IOX1DI";
+ output-high;
+ };
+
+ iox1_pins: iox1-pins {
+ groups = "iox1";
+ function = "iox1";
+ };
+ iox2_pins: iox2-pins {
+ groups = "iox2";
+ function = "iox2";
+ };
+
+ ....
+
+ clkreq_pins: clkreq-pins {
+ groups = "clkreq";
+ function = "clkreq";
+ };
+};
\ No newline at end of file
--
2.14.1
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