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ARM: dts: pxa3xx: add pincontrol helpers

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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 <robert.jarzmik@free.fr>
This commit is contained in:
Robert Jarzmik 2016-04-05 08:35:55 +02:00
parent 3a23249e5f
commit fca43c3f7e
1 changed files with 90 additions and 0 deletions
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90
arch/arm/boot/dts/pxa3xx.dtsi
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@ -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";