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pwm: stm32: add support for stm32mp25

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Add support for STM32MP25 SoC.
IPIDR register is used to check the hardware configuration register
when available to gather the number of complementary outputs.

Signed-off-by: Cheick Traore <cheick.traore@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
This commit is contained in:
Cheick Traore 2025-06-20 17:49:59 +02:00 committed by Patrice Chotard
parent 8e1fafb807
commit 3f14dc91ab
1 changed files with 10 additions and 1 deletions
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11
drivers/pwm/pwm-stm32.c
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@ -12,6 +12,7 @@
#include <asm/io.h>
#include <asm/arch/timers.h>
#include <dm/device_compat.h>
#include <linux/bitfield.h>
#include <linux/time.h>
#define CCMR_CHANNEL_SHIFT 8
@ -157,7 +158,14 @@ static void stm32_pwm_detect_complementary(struct udevice *dev)
{
struct stm32_timers_plat *plat = dev_get_plat(dev_get_parent(dev));
struct stm32_pwm_priv *priv = dev_get_priv(dev);
u32 ccer;
u32 ccer, val;
if (plat->ipidr) {
/* Simply read from HWCFGR the number of complementary outputs (MP25). */
val = readl(plat->base + TIM_HWCFGR1);
priv->have_complementary_output = !!FIELD_GET(TIM_HWCFGR1_NB_OF_DT, val);
return;
}
/*
* If complementary bit doesn't exist writing 1 will have no
@ -192,6 +200,7 @@ static const struct pwm_ops stm32_pwm_ops = {
static const struct udevice_id stm32_pwm_ids[] = {
{ .compatible = "st,stm32-pwm" },
{ .compatible = "st,stm32mp25-pwm" },
{ }
};