Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fca43c3f authored by Robert Jarzmik's avatar Robert Jarzmik
Browse files

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: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
parent 3a23249e

arch/arm/boot/dts/pxa3xx.dtsi

+90 −0
Original line number Diff line number Diff line 
/* 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";