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-rw-r--r--arch/arm/include/asm/arch-tegra/pinmux.h11
-rw-r--r--arch/arm/mach-tegra/pinmux-common.c36
2 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-tegra/pinmux.h b/arch/arm/include/asm/arch-tegra/pinmux.h
index d87da10..4212e57 100644
--- a/arch/arm/include/asm/arch-tegra/pinmux.h
+++ b/arch/arm/include/asm/arch-tegra/pinmux.h
@@ -63,6 +63,14 @@ enum pmux_pin_rcv_sel {
};
#endif
+#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV
+enum pmux_pin_e_io_hv {
+ PMUX_PIN_E_IO_HV_DEFAULT = 0,
+ PMUX_PIN_E_IO_HV_NORMAL,
+ PMUX_PIN_E_IO_HV_HIGH,
+};
+#endif
+
#ifdef TEGRA_PMX_GRPS_HAVE_LPMD
/* Defines a pin group cfg's low-power mode select */
enum pmux_lpmd {
@@ -119,6 +127,9 @@ struct pmux_pingrp_config {
u32 rcv_sel:2; /* select between High and Normal */
/* VIL/VIH receivers */
#endif
+#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV
+ u32 e_io_hv:2; /* select 3.3v tolerant receivers */
+#endif
#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
u32 schmt:2; /* schmitt enable */
#endif
diff --git a/arch/arm/mach-tegra/pinmux-common.c b/arch/arm/mach-tegra/pinmux-common.c
index 9bf3086..912f65e 100644
--- a/arch/arm/mach-tegra/pinmux-common.c
+++ b/arch/arm/mach-tegra/pinmux-common.c
@@ -56,6 +56,13 @@
((rcv_sel) <= PMUX_PIN_RCV_SEL_HIGH))
#endif
+#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV
+/* return 1 if a pin_e_io_hv is in range */
+#define pmux_pin_e_io_hv_isvalid(e_io_hv) \
+ (((e_io_hv) >= PMUX_PIN_E_IO_HV_NORMAL) && \
+ ((e_io_hv) <= PMUX_PIN_E_IO_HV_HIGH))
+#endif
+
#ifdef TEGRA_PMX_GRPS_HAVE_LPMD
#define pmux_lpmd_isvalid(lpm) \
(((lpm) >= PMUX_LPMD_X8) && ((lpm) <= PMUX_LPMD_X))
@@ -113,6 +120,7 @@
#ifdef TEGRA_PMX_PINS_HAVE_HSM
#define HSM_SHIFT 9
#endif
+#define E_IO_HV_SHIFT 10
#define OD_SHIFT 11
#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
#define SCHMT_SHIFT 12
@@ -342,6 +350,31 @@ static void pinmux_set_rcv_sel(enum pmux_pingrp pin,
}
#endif
+#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV
+static void pinmux_set_e_io_hv(enum pmux_pingrp pin,
+ enum pmux_pin_e_io_hv e_io_hv)
+{
+ u32 *reg = REG(pin);
+ u32 val;
+
+ if (e_io_hv == PMUX_PIN_E_IO_HV_DEFAULT)
+ return;
+
+ /* Error check on pin and e_io_hv */
+ assert(pmux_pingrp_isvalid(pin));
+ assert(pmux_pin_e_io_hv_isvalid(e_io_hv));
+
+ val = readl(reg);
+ if (e_io_hv == PMUX_PIN_E_IO_HV_HIGH)
+ val |= (1 << E_IO_HV_SHIFT);
+ else
+ val &= ~(1 << E_IO_HV_SHIFT);
+ writel(val, reg);
+
+ return;
+}
+#endif
+
#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
static void pinmux_set_schmt(enum pmux_pingrp pin, enum pmux_schmt schmt)
{
@@ -414,6 +447,9 @@ static void pinmux_config_pingrp(const struct pmux_pingrp_config *config)
#ifdef TEGRA_PMX_PINS_HAVE_RCV_SEL
pinmux_set_rcv_sel(pin, config->rcv_sel);
#endif
+#ifdef TEGRA_PMX_PINS_HAVE_E_IO_HV
+ pinmux_set_e_io_hv(pin, config->e_io_hv);
+#endif
#ifdef TEGRA_PMX_PINS_HAVE_SCHMT
pinmux_set_schmt(pin, config->schmt);
#endif