From fca43c3f7e6fe421194e9b21eabc72604edac16c Mon Sep 17 00:00:00 2001 From: Robert Jarzmik Date: Tue, 5 Apr 2016 08:35:55 +0200 Subject: ARM: dts: pxa3xx: add pincontrol helpers The various pxa3xx variants have a really weird pin scheme assignement, when you want the pin number relative to a known gpio pin. This change adds the various tools to ease up writing the pinmux and pinconf devicetree parts. Signed-off-by: Robert Jarzmik --- arch/arm/boot/dts/pxa3xx.dtsi | 90 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 90 insertions(+) (limited to 'arch/arm/boot/dts/pxa3xx.dtsi') diff --git a/arch/arm/boot/dts/pxa3xx.dtsi b/arch/arm/boot/dts/pxa3xx.dtsi index 6995b11ce042..9d6f3aacedb7 100644 --- a/arch/arm/boot/dts/pxa3xx.dtsi +++ b/arch/arm/boot/dts/pxa3xx.dtsi @@ -1,6 +1,96 @@ /* The pxa3xx skeleton simply augments the 2xx version */ #include "pxa2xx.dtsi" +#define MFP_PIN_PXA300(gpio) \ + ((gpio <= 2) ? (0x00b4 + 4 * gpio) : \ + (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \ + (gpio <= 98) ? (0x0400 + 4 * (gpio - 27)) : \ + (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \ + 0) + +#define MFP_PIN_PXA310(gpio) \ + ((gpio <= 2) ? (0x00b4 + 4 * gpio) : \ + (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \ + (gpio <= 29) ? (0x0400 + 4 * (gpio - 27)) : \ + (gpio <= 98) ? (0x0418 + 4 * (gpio - 30)) : \ + (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \ + (gpio <= 262) ? 0 : \ + (gpio <= 268) ? (0x052c + 4 * (gpio - 263)) : \ + 0) + +#define MFP_PIN_PXA320(gpio) \ + ((gpio <= 4) ? (0x0124 + 4 * gpio) : \ + (gpio <= 9) ? (0x028c + 4 * (gpio - 5)) : \ + (gpio <= 10) ? (0x0458 + 4 * (gpio - 10)) : \ + (gpio <= 26) ? (0x02a0 + 4 * (gpio - 11)) : \ + (gpio <= 48) ? (0x0400 + 4 * (gpio - 27)) : \ + (gpio <= 62) ? (0x045c + 4 * (gpio - 49)) : \ + (gpio <= 73) ? (0x04b4 + 4 * (gpio - 63)) : \ + (gpio <= 98) ? (0x04f0 + 4 * (gpio - 74)) : \ + (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \ + 0) + +/* + * MFP Alternate functions for pins having a gpio. + * Example of use: pinctrl-single,pins = < MFP_PIN_PXA310(21) MFP_AF1 > + */ +#define MFP_AF0 (0 << 0) +#define MFP_AF1 (1 << 0) +#define MFP_AF2 (2 << 0) +#define MFP_AF3 (3 << 0) +#define MFP_AF4 (4 << 0) +#define MFP_AF5 (5 << 0) +#define MFP_AF6 (6 << 0) + +/* + * MFP drive strength functions for pins. + * Example of use: pinctrl-single,drive-strength = MFP_DS03X; + */ +#define MFP_DSMSK (0x7 << 10) +#define MFP_DS01X < (0x0 << 10) MFP_DSMSK > +#define MFP_DS02X < (0x1 << 10) MFP_DSMSK > +#define MFP_DS03X < (0x2 << 10) MFP_DSMSK > +#define MFP_DS04X < (0x3 << 10) MFP_DSMSK > +#define MFP_DS06X < (0x4 << 10) MFP_DSMSK > +#define MFP_DS08X < (0x5 << 10) MFP_DSMSK > +#define MFP_DS10X < (0x6 << 10) MFP_DSMSK > +#define MFP_DS13X < (0x7 << 10) MFP_DSMSK > + +/* + * MFP low power mode for pins. + * Example of use: + * pinctrl-single,low-power-mode = MFP_LPM(MFP_LPM_PULL_LOW|MFP_LPM_EDGE_FALL); + * + * Table that determines the low power modes outputs, with actual settings + * used in parentheses for don't-care values. Except for the float output, + * the configured driven and pulled levels match, so if there is a need for + * non-LPM pulled output, the same configuration could probably be used. + * + * Output value sleep_oe_n sleep_data pullup_en pulldown_en pull_sel + * (bit 7) (bit 8) (bit 14) (bit 13) (bit 15) + * + * Input 0 X(0) X(0) X(0) 0 + * Drive 0 0 0 0 X(1) 0 + * Drive 1 0 1 X(1) 0 0 + * Pull hi (1) 1 X(1) 1 0 0 + * Pull lo (0) 1 X(0) 0 1 0 + * Z (float) 1 X(0) 0 0 0 + */ +#define MFP_LPM(x) < (x) MFP_LPM_MSK > + +#define MFP_LPM_MSK 0xe1f0 +#define MFP_LPM_INPUT 0x0000 +#define MFP_LPM_DRIVE_LOW 0x2000 +#define MFP_LPM_DRIVE_HIGH 0x4100 +#define MFP_LPM_PULL_LOW 0x2080 +#define MFP_LPM_PULL_HIGH 0x4180 +#define MFP_LPM_FLOAT 0x0080 + +#define MFP_LPM_EDGE_NONE 0x0000 +#define MFP_LPM_EDGE_RISE 0x0010 +#define MFP_LPM_EDGE_FALL 0x0020 +#define MFP_LPM_EDGE_BOTH 0x0030 + / { model = "Marvell PXA3xx familiy SoC"; compatible = "marvell,pxa3xx"; -- cgit