diff options
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/pwm-mediatek.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/pwm/pwm-mediatek.c b/drivers/pwm/pwm-mediatek.c index 6bc851cadb3e..ad3770bfc202 100644 --- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -30,12 +30,14 @@ #define PWM45DWIDTH_FIXUP 0x30 #define PWMTHRES 0x30 #define PWM45THRES_FIXUP 0x34 +#define PWM_CK_26M_SEL 0x210 #define PWM_CLK_DIV_MAX 7 struct pwm_mediatek_of_data { unsigned int num_pwms; bool pwm45_fixup; + bool has_ck_26m_sel; }; /** @@ -132,6 +134,10 @@ static int pwm_mediatek_config(struct pwm_chip *chip, struct pwm_device *pwm, if (ret < 0) return ret; + /* Make sure we use the bus clock and not the 26MHz clock */ + if (pc->soc->has_ck_26m_sel) + writel(0, pc->regs + PWM_CK_26M_SEL); + /* Using resolution in picosecond gets accuracy higher */ resolution = (u64)NSEC_PER_SEC * 1000; do_div(resolution, clk_get_rate(pc->clk_pwms[pwm->hwpwm])); @@ -279,31 +285,37 @@ static int pwm_mediatek_remove(struct platform_device *pdev) static const struct pwm_mediatek_of_data mt2712_pwm_data = { .num_pwms = 8, .pwm45_fixup = false, + .has_ck_26m_sel = false, }; static const struct pwm_mediatek_of_data mt7622_pwm_data = { .num_pwms = 6, .pwm45_fixup = false, + .has_ck_26m_sel = false, }; static const struct pwm_mediatek_of_data mt7623_pwm_data = { .num_pwms = 5, .pwm45_fixup = true, + .has_ck_26m_sel = false, }; static const struct pwm_mediatek_of_data mt7628_pwm_data = { .num_pwms = 4, .pwm45_fixup = true, + .has_ck_26m_sel = false, }; static const struct pwm_mediatek_of_data mt7629_pwm_data = { .num_pwms = 1, .pwm45_fixup = false, + .has_ck_26m_sel = false, }; static const struct pwm_mediatek_of_data mt8516_pwm_data = { .num_pwms = 5, .pwm45_fixup = false, + .has_ck_26m_sel = true, }; static const struct of_device_id pwm_mediatek_of_match[] = { |