Cleanup rules.mk for 32U4 keyboards, L-M (#7120)

* Cleanup rules.mk for 32U4 keyboards, L-M

* Move some stuff to keyboard level

4 files changed, 2 insertions, 38 deletions

diff --git a/keyboards/lets_split/keymaps/default/rules.mk b/keyboards/lets_split/keymaps/default/rules.mk
deleted file mode 100644
index e69de29bb..000000000
--- a/keyboards/lets_split/keymaps/default/rules.mk
+++ /dev/null
diff --git a/keyboards/lets_split/rev1/rules.mk b/keyboards/lets_split/rev1/rules.mk
index f84561674..e69de29bb 100644
--- a/keyboards/lets_split/rev1/rules.mk
+++ b/keyboards/lets_split/rev1/rules.mk
@@ -1 +0,0 @@
-BACKLIGHT_ENABLE = no
\ No newline at end of file
diff --git a/keyboards/lets_split/rev2/rules.mk b/keyboards/lets_split/rev2/rules.mk
index 7b30c0bef..e69de29bb 100644
--- a/keyboards/lets_split/rev2/rules.mk
+++ b/keyboards/lets_split/rev2/rules.mk
@@ -1 +0,0 @@
-BACKLIGHT_ENABLE = no
diff --git a/keyboards/lets_split/rules.mk b/keyboards/lets_split/rules.mk
index 489965735..98736310c 100644
--- a/keyboards/lets_split/rules.mk
+++ b/keyboards/lets_split/rules.mk
@@ -1,50 +1,16 @@
 # MCU name
 MCU = atmega32u4
 
-# Processor frequency.
-#     This will define a symbol, F_CPU, in all source code files equal to the
-#     processor frequency in Hz. You can then use this symbol in your source code to
-#     calculate timings. Do NOT tack on a 'UL' at the end, this will be done
-#     automatically to create a 32-bit value in your source code.
-#
-#     This will be an integer division of F_USB below, as it is sourced by
-#     F_USB after it has run through any CPU prescalers. Note that this value
-#     does not *change* the processor frequency - it should merely be updated to
-#     reflect the processor speed set externally so that the code can use accurate
-#     software delays.
-F_CPU = 16000000
-
-#
-# LUFA specific
-#
-# Target architecture (see library "Board Types" documentation).
-ARCH = AVR8
-
-# Input clock frequency.
-#     This will define a symbol, F_USB, in all source code files equal to the
-#     input clock frequency (before any prescaling is performed) in Hz. This value may
-#     differ from F_CPU if prescaling is used on the latter, and is required as the
-#     raw input clock is fed directly to the PLL sections of the AVR for high speed
-#     clock generation for the USB and other AVR subsections. Do NOT tack on a 'UL'
-#     at the end, this will be done automatically to create a 32-bit value in your
-#     source code.
-#
-#     If no clock division is performed on the input clock inside the AVR (via the
-#     CPU clock adjust registers or the clock division fuses), this will be equal to F_CPU.
-F_USB = $(F_CPU)
-
 # Bootloader selection
 #   Teensy       halfkay
 #   Pro Micro    caterina
 #   Atmel DFU    atmel-dfu
 #   LUFA DFU     lufa-dfu
 #   QMK DFU      qmk-dfu
-#   atmega32a    bootloadHID
+#   ATmega32A    bootloadHID
+#   ATmega328P   USBasp
 BOOTLOADER = caterina
 
-# Interrupt driven control endpoint task(+60)
-OPT_DEFS += -DINTERRUPT_CONTROL_ENDPOINT
-
 # Build Options
 #   change to "no" to disable the options, or define them in the Makefile in
 #   the appropriate keymap folder that will get included automatically