2 files changed, 11 insertions, 2 deletions
diff --git a/shared-module/displayio/FourWire.c b/shared-module/displayio/FourWire.c
index 2ca685f17..b01456bba 100644
--- a/shared-module/displayio/FourWire.c
+++ b/shared-module/displayio/FourWire.c
@@ -41,8 +41,14 @@ void common_hal_displayio_fourwire_construct(displayio_fourwire_obj_t* self,
 
     self->bus = spi;
     common_hal_busio_spi_never_reset(self->bus);
+    // Our object is statically allocated off the heap so make sure the bus object lives to the end
+    // of the heap as well.
     gc_never_free(self->bus);
 
+    self->frequency = common_hal_busio_spi_get_frequency(spi);
+    self->polarity = common_hal_busio_spi_get_polarity(spi);
+    self->phase = common_hal_busio_spi_get_phase(spi);
+
     common_hal_digitalio_digitalinout_construct(&self->command, command);
     common_hal_digitalio_digitalinout_switch_to_output(&self->command, true, DRIVE_MODE_PUSH_PULL);
     common_hal_digitalio_digitalinout_construct(&self->chip_select, chip_select);
@@ -73,8 +79,8 @@ bool common_hal_displayio_fourwire_begin_transaction(mp_obj_t obj) {
     if (!common_hal_busio_spi_try_lock(self->bus)) {
         return false;
     }
-    // TODO(tannewt): Stop hardcoding SPI frequency, polarity and phase.
-    common_hal_busio_spi_configure(self->bus, 12000000, 0, 0, 8);
+    common_hal_busio_spi_configure(self->bus, self->frequency, self->polarity,
+                                   self->phase, 8);
     common_hal_digitalio_digitalinout_set_value(&self->chip_select, false);
     return true;
 }
diff --git a/shared-module/displayio/FourWire.h b/shared-module/displayio/FourWire.h
index 234bcf794..743139e62 100644
--- a/shared-module/displayio/FourWire.h
+++ b/shared-module/displayio/FourWire.h
@@ -38,6 +38,9 @@ typedef struct {
     digitalio_digitalinout_obj_t command;
     digitalio_digitalinout_obj_t chip_select;
     digitalio_digitalinout_obj_t reset;
+    uint32_t frequency;
+    uint8_t polarity;
+    uint8_t phase;
 } displayio_fourwire_obj_t;
 
 #endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_DISPLAYIO_FOURWIRE_H