From: hdegoede@redhat.com (Hans de Goede)
To: linux-arm-kernel@lists.infradead.org
Subject: [linux-sunxi] Re: [PATCH 0/5] ARM: dts: sunxi: Add backlight node to q8 tablets
Date: Mon, 21 Dec 2015 13:59:59 +0100 [thread overview]
Message-ID: <5677F7CF.3050308@redhat.com> (raw)
In-Reply-To: <fc4adcf5-4362-4d4c-b42e-729922c79f65@googlegroups.com>
Hi,
On 21-12-15 11:56, Silvio Pellicano wrote:
>
>
>> Here is a slightly updated version of Chen-Yu's backlight
>> patches, also adding support for the backlight found on A13
>> based q8 tablets.
>>
>
> If i compile your dtsi with (obviously) pwm support enable , backlight
> switch off after kernel start,
> if i disable pwm in menuconfig,it stay on, all seem correct (pwm on PB2 in
> original script.bin),
> but there is somewhere a bug in pwm or dtsi description of backlight.
No there is not, if you enable the pwm driver you must also enable
the backlight-pwm driver / add CONFIG_BACKLIGHT_PWM=y to your .config
(and make sure it stays that way after a "make oldconfig").
Regards,
Hans
next prev parent reply other threads:[~2015-12-21 12:59 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-20 12:30 [PATCH 0/5] ARM: dts: sunxi: Add backlight node to q8 tablets Hans de Goede
2015-09-20 12:30 ` [PATCH 1/5] ARM: dts: sun5i: Add PWM controller node for A13/A10s Hans de Goede
2015-09-22 14:28 ` Maxime Ripard
2015-09-20 12:30 ` [PATCH 2/5] ARM: dts: sun5i: Add PWM channel 0 pinmux setting " Hans de Goede
2015-09-22 14:29 ` Maxime Ripard
2015-09-20 12:30 ` [PATCH 3/5] ARM: dts: sunxi: Enable PWM controller on Q8 format tablets Hans de Goede
2015-09-20 12:30 ` [PATCH 4/5] ARM: dts: sun8i: Add pwm-backlight device for A23/A33 " Hans de Goede
2015-09-22 14:44 ` Maxime Ripard
2015-09-20 12:30 ` [PATCH 5/5] ARM: dts: sun5i: Add backlight node to sun5i-q8-common.dtsi Hans de Goede
2015-09-20 14:46 ` Chen-Yu Tsai
2015-09-20 15:14 ` [linux-sunxi] " Hans de Goede
2015-09-20 15:21 ` Hans de Goede
2015-12-19 10:54 ` 8001010 at gmail.com
2015-12-22 3:21 ` Chen-Yu Tsai
[not found] ` <fc4adcf5-4362-4d4c-b42e-729922c79f65@googlegroups.com>
2015-12-21 12:59 ` Hans de Goede [this message]
2016-01-11 10:34 ` [linux-sunxi] Re: [PATCH 0/5] ARM: dts: sunxi: Add backlight node to q8 tablets 8001010
2016-01-11 11:09 ` Hans de Goede
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