[ARM] pxa: add missing GPIOs definitions

GPIO3/GPIO4 are a bit special on pxa27x, since it depends on PCFR/PI2C_EN
bit, add their definitions here with comments.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Acked-by: Stefan Schmidt <stefan@datenfreihafen.org>

1 files changed, 6 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
index 122bdbd53182..da4f85a4f990 100644
--- a/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
+++ b/arch/arm/mach-pxa/include/mach/mfp-pxa27x.h
@@ -11,6 +11,12 @@
 #include <mach/mfp.h>
 #include <mach/mfp-pxa2xx.h>
 
+/* Note: GPIO3/GPIO4 will be driven by Power I2C when PCFR/PI2C_EN
+ * bit is set, regardless of the GPIO configuration
+ */
+#define GPIO3_GPIO              MFP_CFG_IN(GPIO3, AF0)
+#define GPIO4_GPIO              MFP_CFG_IN(GPIO4, AF0)
+
 /* GPIO */
 #define GPIO85_GPIO             MFP_CFG_IN(GPIO85, AF0)
 #define GPIO86_GPIO             MFP_CFG_IN(GPIO86, AF0)