diff options
| author | Guodong Xu <guodong@riscstar.com> | 2025-04-29 16:50:44 +0800 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2025-07-07 08:39:33 +0200 |
| commit | 52d2d14d9e49b8c33ff718d2036084d0c92f23f1 (patch) | |
| tree | d7b5d6aff7f1c55e0cee17f4202926a3116c9804 | |
| parent | 08e0b981231fd467204764f162087d6d9d1359af (diff) | |
pwm: pxa: Add optional reset control
Support optional reset control for the PWM PXA driver.
During probe, it acquires the reset controller using
devm_reset_control_get_optional_exclusive_deasserted() to get and deassert
the reset controller to enable the PWM channel.
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Link: https://lore.kernel.org/r/20250429085048.1310409-3-guodong@riscstar.com
[ukleinek: Fix conflict with commit df08fff8add2 ("pwm: pxa: Improve using dev_err_probe()")]
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
| -rw-r--r-- | drivers/pwm/pwm-pxa.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-pxa.c b/drivers/pwm/pwm-pxa.c index 8a4a3d2df30d..0f5bdb0e395e 100644 --- a/drivers/pwm/pwm-pxa.c +++ b/drivers/pwm/pwm-pxa.c @@ -25,6 +25,7 @@ #include <linux/io.h> #include <linux/pwm.h> #include <linux/of.h> +#include <linux/reset.h> #include <asm/div64.h> @@ -161,6 +162,7 @@ static int pwm_probe(struct platform_device *pdev) struct pwm_chip *chip; struct pxa_pwm_chip *pc; struct device *dev = &pdev->dev; + struct reset_control *rst; int ret = 0; if (IS_ENABLED(CONFIG_OF) && id == NULL) @@ -179,6 +181,10 @@ static int pwm_probe(struct platform_device *pdev) if (IS_ERR(pc->clk)) return dev_err_probe(dev, PTR_ERR(pc->clk), "Failed to get clock\n"); + rst = devm_reset_control_get_optional_exclusive_deasserted(dev, NULL); + if (IS_ERR(rst)) + return PTR_ERR(rst); + chip->ops = &pxa_pwm_ops; if (IS_ENABLED(CONFIG_OF)) |