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authorRobert Jarzmik <robert.jarzmik@free.fr>2018-07-02 07:37:52 +0200
committerRobert Jarzmik <robert.jarzmik@free.fr>2018-08-31 22:29:29 +0200
commit9f296fe2718efe558825471b5cdf0ca4d1bdd3c6 (patch)
tree67b00e1c6ed01093b3f2e4f7a0a277f64a2f6814 /arch/arm/boot/dts/pxa2xx.dtsi
parent8a1ecc01a473b75ab97be9b36f623e4551a6e9ae (diff)
ARM: dts: pxa: add pincontrol helpers
Add 3 helpers so that pincontrol definitions for pxa25x and pxa27x are easier, and can be easily converted from old mfp mach-pxa code to devicetree. An example of such conversion would be : static unsigned long mioa701_pin_config[] = { GPIO32_MMC_CLK, GPIO92_MMC_DAT_0, GPIO109_MMC_DAT_1, GPIO110_MMC_DAT_2, GPIO111_MMC_DAT_3, GPIO112_MMC_CMD, MIO_CFG_IN(GPIO78_SDIO_RO, AF0), MIO_CFG_IN(GPIO15_SDIO_INSERT, AF0), MIO_CFG_OUT(GPIO91_SDIO_EN, AF0, DRIVE_LOW), }; into: pinctrl_mmc_default: mmc-default { PMMUX(sd-insert, 15, gpio_in); PMMUX(mmclk, 32, MMCLK); PMMUX(sd-ro, 78, gpio_in); PMMUX_LPM_LOW(sd-enable, 91, gpio_out); PMMUX(mmdat0, 92, MMDAT<0>); PMMUX(mmdat1, 109, MMDAT<1>); PMMUX(mmdat2, 110, MMDAT<2>); PMMUX(mmdat3, 111, MMDAT<3>); PMMUX(mmcmd, 112, MMCMD); }; The third column of PMMUX*() helpers can be found in pincontrol muxing functions, either in pinctrl-pxa27x.c (or pinctrl-pxa25x.c), or by inspecting the pincontrol once booted in debugfs. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Diffstat (limited to 'arch/arm/boot/dts/pxa2xx.dtsi')
-rw-r--r--arch/arm/boot/dts/pxa2xx.dtsi19
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/pxa2xx.dtsi b/arch/arm/boot/dts/pxa2xx.dtsi
index 242ca81306de..080d5c5169b5 100644
--- a/arch/arm/boot/dts/pxa2xx.dtsi
+++ b/arch/arm/boot/dts/pxa2xx.dtsi
@@ -9,6 +9,25 @@
#include "skeleton.dtsi"
#include "dt-bindings/clock/pxa-clock.h"
+#define PMGROUP(pin) #pin
+#define PMMUX(func, pin, af) \
+ mux- ## func { \
+ groups = PMGROUP(P ## pin); \
+ function = #af; \
+ }
+#define PMMUX_LPM_LOW(func, pin, af) \
+ mux- ## func { \
+ groups = PMGROUP(P ## pin); \
+ function = #af; \
+ low-power-disable; \
+ }
+#define PMMUX_LPM_HIGH(func, pin, af) \
+ mux- ## func { \
+ groups = PMGROUP(P ## pin); \
+ function = #af; \
+ low-power-enable; \
+ }
+
/ {
model = "Marvell PXA2xx family SoC";
compatible = "marvell,pxa2xx";