Hi Jacopo, On Wednesday, April 05, 2017, Jacopo Mondi wrote: > v3 -> v4: > - use "pinmux" property in pmx sub-nodes in place of "renesas,pins" > - use pinconf standard properties to set pin mux additional flags > - add "bi-directional" and "output-enable" to pinconf generic properties > - perform pmx function parsing at dt_node_to_map() time > - change DT bindings to use GENERIC_PINCONF > - change DT bindings to allow sub-nodes to have "pinmux" property > specified > - several renames (register names, DT parse functions, set_mux() function) I just tested this driver on the RZ/A1 RSK board. The following worked good. SCIF2, I2C, SDHI, Ethernet SDHI also has bi-direction pins. For your reference, here was my DT: /* SHDI ch1 on CN1 */ sdhi1_pins: sdhi1 { pins { pinmux = <RZA1_PINMUX(3, 8, 7)>, /* SD_CD_1 */ <RZA1_PINMUX(3, 9, 7)>, /* SD_WP_1 */ <RZA1_PINMUX(3, 12, 7)>, /* SD_CLK_1 */ <RZA1_PINMUX(3, 13, 7)>; /* SD_CMD_1 */ }; pins_bidir { pinmux = <RZA1_PINMUX(3, 10, 7)>, /* SD_D1_1 */ <RZA1_PINMUX(3, 11, 7)>, /* SD_D0_1 */ <RZA1_PINMUX(3, 14, 7)>, /* SD_D3_1 */ <RZA1_PINMUX(3, 15, 7)>; /* SD_D2_1 */ bi-directional; }; }; Thanks, Chris