5.4-stable review patch. If anyone has any objections, please let me know.
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From: Daniel Golle daniel@makrotopia.org
commit aa3c668f2f98856af96e13f44da6ca4f26f0b98c upstream.
According to MT7622 Reference Manual for Development Board v1.0 the PWM unit found in the MT7622 SoC also comes with the PWM_CK_26M_SEL register at offset 0x210 just like other modern MediaTek ARM64 SoCs. And also MT7622 sets that register to 0x00000001 on reset which is described as 'Select 26M fix CLK as BCLK' in the datasheet. Hence set has_ck_26m_sel to true also for MT7622 which results in the driver writing 0 to the PWM_CK_26M_SEL register which is described as 'Select bus CLK as BCLK'.
Fixes: 0c0ead76235db0 ("pwm: mediatek: Always use bus clock") Signed-off-by: Daniel Golle daniel@makrotopia.org Reviewed-by: AngeloGioacchino Del Regno angelogioacchino.delregno@collabora.com Acked-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Link: https://lore.kernel.org/r/Y1iF2slvSblf6bYK@makrotopia.org Signed-off-by: Uwe Kleine-König u.kleine-koenig@pengutronix.de Signed-off-by: Thierry Reding thierry.reding@gmail.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/pwm/pwm-mediatek.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/pwm/pwm-mediatek.c +++ b/drivers/pwm/pwm-mediatek.c @@ -296,7 +296,7 @@ static const struct pwm_mediatek_of_data static const struct pwm_mediatek_of_data mt7622_pwm_data = { .num_pwms = 6, .pwm45_fixup = false, - .has_ck_26m_sel = false, + .has_ck_26m_sel = true, };
static const struct pwm_mediatek_of_data mt7623_pwm_data = {