board: photonicat2: enable PWM_ROCKCHIP_V4

Author: HackingGate

config/boards/photonicat2.csc

@@ -30,11 +30,14 @@ function custom_kernel_config__photonicat2_pm() {
 }
 
 # Enable PWM subsystem for backlight, beeper, voltage regulation, LEDs
+# RK3576 uses PWM v4 hardware which requires the PWM_ROCKCHIP_V4 driver
+# Note: The driver patch must be added from photonicat-old kernel tree
 function custom_kernel_config__photonicat2_pwm() {
 	kernel_config_modifying_hashes+=(
 		"CONFIG_PWM=y"
 		"CONFIG_BACKLIGHT_PWM=y"
 		"CONFIG_ROCKCHIP_MFPWM=y"
+		"CONFIG_PWM_ROCKCHIP_V4=y"
 		"CONFIG_ROCKCHIP_PWM_CAPTURE=y"
 		"CONFIG_INPUT_PWM_BEEPER=y"
 		"CONFIG_BACKLIGHT_PWM=y"
@@ -45,6 +48,7 @@ function custom_kernel_config__photonicat2_pwm() {
 		kernel_config_set_y PWM
 		kernel_config_set_y BACKLIGHT_PWM
 		kernel_config_set_y ROCKCHIP_MFPWM
+		kernel_config_set_y PWM_ROCKCHIP_V4
 		kernel_config_set_y ROCKCHIP_PWM_CAPTURE
 		kernel_config_set_y INPUT_PWM_BEEPER
 		kernel_config_set_y BACKLIGHT_PWM