Ahoj, To configure individual pad's characteristics on i.MX6 SoC a fsl,pins = <PIN_FUNC_ID CONFIG> property can be used. Is there any convenient way to configure the pad group control registers? The issue is that some bits (DDR_SEL and ODT) in the individual RGMII pad control registers are read-only. To tweak those parameters (signal voltage and termination resistors) one need to write to the pad group control registers for the whole RGMII pad group. Namely IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE_RGMII and IOMUXC_SW_PAD_CTL_GRP_RGMII_TERM. The group registers in general are not accessible from the list in arch/arm/boot/dts/imx6dl-pinfunc.h. I could not find any other way to change the group registers than hacking-in some lines into the imx6q_init_machine(void) function in arch/arm/mach-imx/mach-imx6q.c source. As I work towards upstreaming my board this should be done from my device tree or solved in some universal way. Any hints will be much appreciated. Michal -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
