| Message ID | 1509022186-19636-1-git-send-email-LW@KARO-electronics.de |
|---|---|
| Headers | show |
| Series | backlight: pwm_bl: prevent backlight flicker when switching PWM on | expand |
On 26/10/17 13:49, Lothar Waßmann wrote: > These patches implement some measures to prevent backlight flicker > when the backlight is being switched on for a display with an active > low brightness control pin. > GIT: [PATCH 1/2] backlight: pwm_bl: Enable PWM before switching regulator > GIT: [PATCH 2/2] backlight: pwm_bl: add configurable delay between Other than hoisting the pwm_enable() even earlier in the setup sequence this patchset seems to have a significant overlap with Enric's recent posting: https://lkml.org/lkml/2017/7/21/211 Any chance of a shared view on this, especially on the DT bindings? Daniel. -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi all, On 08/11/17 11:48, Daniel Thompson wrote: > On 26/10/17 13:49, Lothar Waßmann wrote: >> These patches implement some measures to prevent backlight flicker >> when the backlight is being switched on for a display with an active >> low brightness control pin. >> GIT: [PATCH 1/2] backlight: pwm_bl: Enable PWM before switching regulator >> GIT: [PATCH 2/2] backlight: pwm_bl: add configurable delay between > > Other than hoisting the pwm_enable() even earlier in the setup sequence this > patchset seems to have a significant overlap with Enric's recent posting: > > https://lkml.org/lkml/2017/7/21/211 > > Any chance of a shared view on this, especially on the DT bindings? > The DT binding were discussed some time ago for the patch series I sent, though there isn't a final ack from DT maintainer. Lothar, the series I sent have been reviewed and acked, can you test if the series fixes the problem for you too? Thanks, Enric > > > Daniel. -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, On Fri, 10 Nov 2017 12:22:15 +0100 Enric Balletbo i Serra wrote: > Hi all, > > On 08/11/17 11:48, Daniel Thompson wrote: > > On 26/10/17 13:49, Lothar Waßmann wrote: > >> These patches implement some measures to prevent backlight flicker > >> when the backlight is being switched on for a display with an active > >> low brightness control pin. > >> GIT: [PATCH 1/2] backlight: pwm_bl: Enable PWM before switching regulator > >> GIT: [PATCH 2/2] backlight: pwm_bl: add configurable delay between > > > > Other than hoisting the pwm_enable() even earlier in the setup sequence this > > patchset seems to have a significant overlap with Enric's recent posting: > > > > https://lkml.org/lkml/2017/7/21/211 > > > > Any chance of a shared view on this, especially on the DT bindings? > > > > The DT binding were discussed some time ago for the patch series I sent, though > there isn't a final ack from DT maintainer. > > Lothar, the series I sent have been reviewed and acked, can you test if the > series fixes the problem for you too? > I'll try to test it within the next couple of days and will report back. Lothar Waßmann -- To unsubscribe from this list: send the line "unsubscribe linux-pwm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html