From 0ced12683cc455aef1fc621fefde562cfbe2414b Mon Sep 17 00:00:00 2001
From: BCG <bgould@users.noreply.github.com>
Date: Mon, 14 Feb 2022 01:06:23 -0500
Subject: [PATCH] Revert "Added support for 125MHz to WS2812 for RP2040"

This reverts commit b4eb406a43ba15b53b0a466e76cfdaa7e29b4137 (erroneous
push).
---
 ws2812/ws2812-asm_cortexm.go | 299 -----------------------------------
 ws2812/ws2812.go             |   2 +-
 ws2812/ws2812_cortexm.go     |   3 -
 3 files changed, 1 insertion(+), 303 deletions(-)

diff --git a/ws2812/ws2812-asm_cortexm.go b/ws2812/ws2812-asm_cortexm.go
index 2f4e9a5..9fb12fd 100644
--- a/ws2812/ws2812-asm_cortexm.go
+++ b/ws2812/ws2812-asm_cortexm.go
@@ -652,305 +652,6 @@ func (d Device) writeByte120(c byte) {
 	interrupt.Restore(mask)
 }
 
-func (d Device) writeByte125(c byte) {
-	portSet, maskSet := d.Pin.PortMaskSet()
-	portClear, maskClear := d.Pin.PortMaskClear()
-
-	// Timings:
-	// T0H: 44 - 46 cycles or 352.0ns - 368.0ns
-	// T1H: 132 - 134 cycles or 1056.0ns - 1072.0ns
-	// TLD: 144 -    cycles or 1152.0ns -
-	mask := interrupt.Disable()
-	value := uint32(c) << 24
-	device.AsmFull(`
-	1: @ send_bit
-	  str   {maskSet}, {portSet}     @ [2]   T0H and T0L start here
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
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-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  lsls  {value}, #1              @ [1]
-	  bcs.n 2f                       @ [1/3] skip_store
-	  str   {maskClear}, {portClear} @ [2]   T0H -> T0L transition
-	2: @ skip_store
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
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-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  str   {maskClear}, {portClear} @ [2]   T1H -> T1L transition
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
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-	  nop
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-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  nop
-	  subs  {i}, #1                  @ [1]
-	  bne.n 1b                       @ [1/3] send_bit
-	`, map[string]interface{}{
-		"value":     value,
-		"i":         8,
-		"maskSet":   maskSet,
-		"portSet":   portSet,
-		"maskClear": maskClear,
-		"portClear": portClear,
-	})
-	interrupt.Restore(mask)
-}
-
 func (d Device) writeByte168(c byte) {
 	portSet, maskSet := d.Pin.PortMaskSet()
 	portClear, maskClear := d.Pin.PortMaskClear()
diff --git a/ws2812/ws2812.go b/ws2812/ws2812.go
index a371c61..a93c9f0 100644
--- a/ws2812/ws2812.go
+++ b/ws2812/ws2812.go
@@ -1,7 +1,7 @@
 // Package ws2812 implements a driver for WS2812 and SK6812 RGB LED strips.
 package ws2812 // import "tinygo.org/x/drivers/ws2812"
 
-//go:generate go run gen-ws2812.go -arch=cortexm 16 48 64 120 125 168
+//go:generate go run gen-ws2812.go -arch=cortexm 16 48 64 120 168
 //go:generate go run gen-ws2812.go -arch=tinygoriscv 160 320
 
 import (
diff --git a/ws2812/ws2812_cortexm.go b/ws2812/ws2812_cortexm.go
index 1858837..fb153b9 100644
--- a/ws2812/ws2812_cortexm.go
+++ b/ws2812/ws2812_cortexm.go
@@ -29,9 +29,6 @@ func (d Device) WriteByte(c byte) error {
 	case 120_000_000: // 120MHz
 		d.writeByte120(c)
 		return nil
-	case 125_000_000: // 125MHz
-		d.writeByte125(c)
-		return nil
 	case 168_000_000: // 168MHz, e.g. stm32f405
 		d.writeByte168(c)
 		return nil