diff --git a/board/bolt/board.c b/board/bolt/board.c
index 1a89534388..3d88c762d8 100644
--- a/board/bolt/board.c
+++ b/board/bolt/board.c
@@ -181,10 +181,10 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
-	[PWM_CH_KBLIGHT] = {4, 0},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{4, 0},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/falco/board.c b/board/falco/board.c
index adc6cbddfb..b7f434d056 100644
--- a/board/falco/board.c
+++ b/board/falco/board.c
@@ -184,9 +184,9 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/kirby/board.c b/board/kirby/board.c
index 4cac7b6d9f..ca88e1416f 100644
--- a/board/kirby/board.c
+++ b/board/kirby/board.c
@@ -106,13 +106,13 @@ const struct gpio_alt_func gpio_alt_funcs[] = {
 };
 const int gpio_alt_funcs_count = ARRAY_SIZE(gpio_alt_funcs);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_CHG_Y] = {STM32_TIM(3), STM32_TIM_CH(1), PWM_CONFIG_ACTIVE_LOW,
+	{STM32_TIM(3), STM32_TIM_CH(1), PWM_CONFIG_ACTIVE_LOW,
 			  GPIO_CHG_LED_Y},
-	[PWM_CH_CHG_G] = {STM32_TIM(3), STM32_TIM_CH(2), PWM_CONFIG_ACTIVE_LOW,
+	{STM32_TIM(3), STM32_TIM_CH(2), PWM_CONFIG_ACTIVE_LOW,
 			  GPIO_CHG_LED_G},
-	[PWM_CH_CHG_R] = {STM32_TIM(3), STM32_TIM_CH(3), PWM_CONFIG_ACTIVE_LOW,
+	{STM32_TIM(3), STM32_TIM_CH(3), PWM_CONFIG_ACTIVE_LOW,
 			  GPIO_CHG_LED_R},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
diff --git a/board/link/board.c b/board/link/board.c
index 2b4fb9aeaf..4d6edbb2ed 100644
--- a/board/link/board.c
+++ b/board/link/board.c
@@ -182,10 +182,10 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
-	[PWM_CH_KBLIGHT] = {1, 0},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{1, 0},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/peppy/board.c b/board/peppy/board.c
index 730e1e17d9..f1d55dd738 100644
--- a/board/peppy/board.c
+++ b/board/peppy/board.c
@@ -176,9 +176,9 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/pit/board.c b/board/pit/board.c
index 9f4ca08a1e..ba9fb7252d 100644
--- a/board/pit/board.c
+++ b/board/pit/board.c
@@ -124,10 +124,10 @@ struct keyboard_scan_config keyscan_config = {
 	},
 };
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_POWER_LED] = {STM32_TIM(2), STM32_TIM_CH(3),
-			      PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
+	{STM32_TIM(2), STM32_TIM_CH(3),
+	 PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/puppy/board.c b/board/puppy/board.c
index f874ed2ad5..db275818ab 100644
--- a/board/puppy/board.c
+++ b/board/puppy/board.c
@@ -109,10 +109,10 @@ const struct i2c_port_t i2c_ports[] = {
 };
 const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_POWER_LED] = {STM32_TIM(2), STM32_TIM_CH(3),
-			      PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
+	{STM32_TIM(2), STM32_TIM_CH(3),
+	 PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/rambi/board.c b/board/rambi/board.c
index 7a6f926763..0ba70a89be 100644
--- a/board/rambi/board.c
+++ b/board/rambi/board.c
@@ -150,10 +150,10 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_LED_GREEN] = {4, PWM_CONFIG_ACTIVE_LOW},
-	[PWM_CH_LED_RED] = {3, PWM_CONFIG_ACTIVE_LOW},
+	{4, PWM_CONFIG_ACTIVE_LOW},
+	{3, PWM_CONFIG_ACTIVE_LOW},
 };
 
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
diff --git a/board/samus/board.c b/board/samus/board.c
index e649836b89..f729ce46f8 100644
--- a/board/samus/board.c
+++ b/board/samus/board.c
@@ -180,10 +180,10 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
-	[PWM_CH_KBLIGHT] = {4, 0},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{4, 0},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/slippy/board.c b/board/slippy/board.c
index df46ddfb02..cf937ead4f 100644
--- a/board/slippy/board.c
+++ b/board/slippy/board.c
@@ -174,9 +174,9 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_FAN] = {CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
+	{CONFIG_FAN_CH_CPU, PWM_CONFIG_HAS_RPM_MODE},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/snow/board.c b/board/snow/board.c
index 4120356175..cf09e189e9 100644
--- a/board/snow/board.c
+++ b/board/snow/board.c
@@ -122,10 +122,10 @@ const struct i2c_port_t i2c_ports[] = {
 };
 const unsigned int i2c_ports_used = ARRAY_SIZE(i2c_ports);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_POWER_LED] = {STM32_TIM(2), STM32_TIM_CH(2),
-			      PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
+	{STM32_TIM(2), STM32_TIM_CH(2),
+	 PWM_CONFIG_ACTIVE_LOW, GPIO_LED_POWER_L},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);
 
diff --git a/board/spring/board.c b/board/spring/board.c
index fd9acaf6d5..09e943d8f7 100644
--- a/board/spring/board.c
+++ b/board/spring/board.c
@@ -120,10 +120,9 @@ const struct adc_t adc_channels[] = {
 };
 BUILD_ASSERT(ARRAY_SIZE(adc_channels) == ADC_CH_COUNT);
 
-/* PWM channels */
+/* PWM channels. Must be in the exactly same order as in enum pwm_channel. */
 const struct pwm_t pwm_channels[] = {
-	[PWM_CH_ILIM] = {STM32_TIM(3), STM32_TIM_CH(1), 0,
-			 GPIO_ILIM},
+	{STM32_TIM(3), STM32_TIM_CH(1), 0, GPIO_ILIM},
 };
 BUILD_ASSERT(ARRAY_SIZE(pwm_channels) == PWM_CH_COUNT);