The IOMUXC_SW_PAD_CTL_* registers on i.MX8M Dual/QuadLite/Quad all have the same basic structure. Add defines for a common subset supported by most of the registers. They can be used in Device Tree source files instead of magic values, making the sources a lot more readable and easier to write as well. Signed-off-by: Sascha Silbe <x-linux@xxxxxxxxxxx> --- .../arm64/boot/dts/freescale/imx8mq-pinfunc.h | 28 +++++++++++++++++++ 1 file changed, 28 insertions(+) The board I'm using this for is an out-of-tree prototype. If there's interest I can convert the in-tree DTS files. I have don't have any of those boards but comparing the built DTBs before vs. after the change should be sufficient. diff --git a/arch/arm64/boot/dts/freescale/imx8mq-pinfunc.h b/arch/arm64/boot/dts/freescale/imx8mq-pinfunc.h index 68e8fa1729741..384ceb5422761 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq-pinfunc.h +++ b/arch/arm64/boot/dts/freescale/imx8mq-pinfunc.h @@ -7,6 +7,34 @@ #ifndef __DTS_IMX8MQ_PINFUNC_H #define __DTS_IMX8MQ_PINFUNC_H +/* Software Input On bit from IOMUXC_SW_MUX_CTL_PAD_* registers. Magic + * value defined in + * Documentation/devicetree/bindings/pinctrl/fsl,imx-pinctrl.txt + */ +#define PAD_SION (1 << 30) +/* input high/low thresholds, 0 = LVCMOS, 1 = LVTTL */ +#define PAD_LVTTL (1 << 8) +/* Schmitt-Trigger, 0 = disabled, 1 = enabled */ +#define PAD_HYS (1 << 7) +/* Internal pull-up resistor, 0 = disabled, 1 = enabled */ +#define PAD_PUE (1 << 6) +/* Open Drain, 0 = push-pull, 1 = open drain */ +#define PAD_ODE (1 << 5) +/* Slew Rate, 50/100/150/200 MHz */ +#define PAD_SRE_50MHZ 0 +#define PAD_SRE_100MHZ (1 << 3) +#define PAD_SRE_150MHZ (2 << 3) +#define PAD_SRE_200MHZ (3 << 3) +/* Drive Strength; names are based on nominal impedance at 3.3V */ +#define PAD_DSE_HIZ 0 +#define PAD_DSE_255OHM 1 +#define PAD_DSE_105OHM 2 +#define PAD_DSE_75OHM 3 +#define PAD_DSE_85OHM 4 +#define PAD_DSE_65OHM 5 +#define PAD_DSE_45OHM 6 +#define PAD_DSE_40OHM 7 + /* * The pin function ID is a tuple of * <mux_reg conf_reg input_reg mux_mode input_val> base-commit: 9c0c4d24ac000e52d55348961d3a3ba42065e0cf prerequisite-patch-id: d2d09cbe2907cd6c1ece0fcc6b576faf1ef8dd37 prerequisite-patch-id: 42e69450ab3e60fd3705232ae05fa1c8acfb467b prerequisite-patch-id: 9360e270fb7fbccc22d2a66c41830746bdb80784 -- 2.30.2
