counter: stm32-timer-cnt: add support for stm32mp25

Add support for STM32MP25 SoC. There are new counter modes that may be
implemented in later. Still, use newly introduced compatible to handle
this new HW variant and avoid being blocked with existing compatible
in SoC dtsi file. Modes supported currently still remains compatible.
New timer 20 has encoder capability, add it to the list.

Signed-off-by: Fabrice Gasnier <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: William Breathitt Gray <[email protected]>

Author: Fabrice Gasnier

drivers/counter/stm32-timer-cnt.c

@@ -669,12 +669,14 @@ static void stm32_timer_cnt_detect_channels(struct device *dev,
 	dev_dbg(dev, "has %d cc channels\n", priv->nchannels);
 }
 
-/* encoder supported on TIM1 TIM2 TIM3 TIM4 TIM5 TIM8 */
-#define STM32_TIM_ENCODER_SUPPORTED	(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(7))
+/* encoder supported on TIM1 TIM2 TIM3 TIM4 TIM5 TIM8 TIM20 */
+#define STM32_TIM_ENCODER_SUPPORTED	(BIT(0) | BIT(1) | BIT(2) | BIT(3) | BIT(4) | BIT(7) | \
+					 BIT(19))
 
 static const char * const stm32_timer_trigger_compat[] = {
 	"st,stm32-timer-trigger",
 	"st,stm32h7-timer-trigger",
+	"st,stm32mp25-timer-trigger",
 };
 
 static int stm32_timer_cnt_probe_encoder(struct device *dev,
@@ -846,6 +848,7 @@ static SIMPLE_DEV_PM_OPS(stm32_timer_cnt_pm_ops, stm32_timer_cnt_suspend,
 
 static const struct of_device_id stm32_timer_cnt_of_match[] = {
 	{ .compatible = "st,stm32-timer-counter", },
+	{ .compatible = "st,stm32mp25-timer-counter", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, stm32_timer_cnt_of_match);