1*c66ec88fSEmmanuel Vadot* Freescale i.MX7ULP IOMUX Controller 2*c66ec88fSEmmanuel Vadot 3*c66ec88fSEmmanuel Vadoti.MX 7ULP has three IOMUXC instances: IOMUXC0 for M4 ports, IOMUXC1 for A7 4*c66ec88fSEmmanuel Vadotports and IOMUXC DDR for DDR interface. 5*c66ec88fSEmmanuel Vadot 6*c66ec88fSEmmanuel VadotNote: 7*c66ec88fSEmmanuel VadotThis binding doc is only for the IOMUXC1 support in A7 Domain and it only 8*c66ec88fSEmmanuel Vadotsupports generic pin config. 9*c66ec88fSEmmanuel Vadot 10*c66ec88fSEmmanuel VadotPlease refer to fsl,imx-pinctrl.txt in this directory for common binding 11*c66ec88fSEmmanuel Vadotpart and usage. 12*c66ec88fSEmmanuel Vadot 13*c66ec88fSEmmanuel VadotRequired properties: 14*c66ec88fSEmmanuel Vadot- compatible: "fsl,imx7ulp-iomuxc1". 15*c66ec88fSEmmanuel Vadot- fsl,pins: Each entry consists of 5 integers which represents the mux 16*c66ec88fSEmmanuel Vadot and config setting for one pin. The first 4 integers 17*c66ec88fSEmmanuel Vadot <mux_conf_reg input_reg mux_mode input_val> are specified 18*c66ec88fSEmmanuel Vadot using a PIN_FUNC_ID macro, which can be found in 19*c66ec88fSEmmanuel Vadot imx7ulp-pinfunc.h in the device tree source folder. 20*c66ec88fSEmmanuel Vadot The last integer CONFIG is the pad setting value like 21*c66ec88fSEmmanuel Vadot pull-up on this pin. 22*c66ec88fSEmmanuel Vadot 23*c66ec88fSEmmanuel Vadot Please refer to i.MX7ULP Reference Manual for detailed 24*c66ec88fSEmmanuel Vadot CONFIG settings. 25*c66ec88fSEmmanuel Vadot 26*c66ec88fSEmmanuel VadotCONFIG bits definition: 27*c66ec88fSEmmanuel VadotPAD_CTL_OBE (1 << 17) 28*c66ec88fSEmmanuel VadotPAD_CTL_IBE (1 << 16) 29*c66ec88fSEmmanuel VadotPAD_CTL_LK (1 << 16) 30*c66ec88fSEmmanuel VadotPAD_CTL_DSE_HI (1 << 6) 31*c66ec88fSEmmanuel VadotPAD_CTL_DSE_STD (0 << 6) 32*c66ec88fSEmmanuel VadotPAD_CTL_ODE (1 << 5) 33*c66ec88fSEmmanuel VadotPAD_CTL_PUSH_PULL (0 << 5) 34*c66ec88fSEmmanuel VadotPAD_CTL_SRE_SLOW (1 << 2) 35*c66ec88fSEmmanuel VadotPAD_CTL_SRE_STD (0 << 2) 36*c66ec88fSEmmanuel VadotPAD_CTL_PE (1 << 0) 37*c66ec88fSEmmanuel Vadot 38*c66ec88fSEmmanuel VadotExamples: 39*c66ec88fSEmmanuel Vadot#include "imx7ulp-pinfunc.h" 40*c66ec88fSEmmanuel Vadot 41*c66ec88fSEmmanuel Vadot/* Pin Controller Node */ 42*c66ec88fSEmmanuel Vadotiomuxc1: pinctrl@40ac0000 { 43*c66ec88fSEmmanuel Vadot compatible = "fsl,imx7ulp-iomuxc1"; 44*c66ec88fSEmmanuel Vadot reg = <0x40ac0000 0x1000>; 45*c66ec88fSEmmanuel Vadot 46*c66ec88fSEmmanuel Vadot /* Pin Configuration Node */ 47*c66ec88fSEmmanuel Vadot pinctrl_lpuart4: lpuart4grp { 48*c66ec88fSEmmanuel Vadot fsl,pins = < 49*c66ec88fSEmmanuel Vadot IMX7ULP_PAD_PTC3__LPUART4_RX 0x1 50*c66ec88fSEmmanuel Vadot IMX7ULP_PAD_PTC2__LPUART4_TX 0x1 51*c66ec88fSEmmanuel Vadot >; 52*c66ec88fSEmmanuel Vadot }; 53*c66ec88fSEmmanuel Vadot}; 54