Messages in this thread | | | Subject | Re: [PATCH 3/3] arm64: dts: rk3399: Add init voltage for vdd_log | From | Kever Yang <> | Date | Wed, 13 Nov 2019 11:21:35 +0800 |
| |
Heiko,
Could you help to just pick the first patch and drop the other 2 patches?
I think it's better to fix in the U-Boot first so that the stability issue will be fixed,
and the update in kernel dts is not so urgent for kernel driver actually not setting
this pwm regulator.
I want to add a patch for rk3399-roc-pc, since Markus Reichl already send it,
so it's OK for that board, and for rock960/Ficus, the vdd_log is removed for stability
issue, then we have to update U-Boot first before kernel can add the vdd_log back.
Thanks,
- Kever
On 2019/11/12 下午4:10, Heiko Stübner wrote: > Hi Kever, > > Am Dienstag, 12. November 2019, 09:04:49 CET schrieb Kever Yang: >> On 2019/11/11 下午4:42, Soeren Moch wrote: >>> On 11.11.19 01:51, Kever Yang wrote: >>>> Since there is no devfreq used for vdd_log, so the vdd_log(pwm regulator) >>>> will be 'enable' with the dts node at a default PWM state with high or low >>>> output. Both too high or too low for vdd_log is not good for the board, >>>> add init voltage for driver to make the regulator get into a know output. >>>> >>>> Note that this will be used by U-Boot for init voltage output, and this >>>> is very important for it may get system hang somewhere during system >>>> boot up with regulator enable and without this init value. >>> I think it's a good idea to include this setting in the main dts for the >>> boards (not in u-boot specific additions as is done now). But there is >>> (for some reason?) no documented binding for regulator-init-microvolt in >>> linux. >> >> Ohh, I forgot the kernel driver does not support this property. >> >> @Heiko, can we add this 'regulator-init-microvolt' without driver >> support but adding document for >> >> it at dt-binding? > In theory yes, but you would still need to get DT maintainers > and Mark Brown (regulator maintainer) involved before that. > > Especially as this is a individual property you will need to have > a good excuse why you're not implementing it in the kernel as well. > > And of course you will need to keep in mind that it might be > in the kernel in the future. > > > Heiko > > > >> >> Thanks, >> >> - Kever >> >>> Regards, >>> Soeren >>>> CC: Elaine Zhang <zhangqing@rock-chips.com> >>>> CC: Peter Robinson <pbrobinson@gmail.com> >>>> Signed-off-by: Kever Yang <kever.yang@rock-chips.com> >>>> --- >>>> >>>> arch/arm64/boot/dts/rockchip/rk3399-evb.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-firefly.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-orangepi.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts | 1 + >>>> arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi | 1 + >>>> 9 files changed, 9 insertions(+) >>>> >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-evb.dts b/arch/arm64/boot/dts/rockchip/rk3399-evb.dts >>>> index 77008dca45bc..fa241aeb11b0 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-evb.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-evb.dts >>>> @@ -65,6 +65,7 @@ >>>> regulator-name = "vdd_center"; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> regulator-always-on; >>>> regulator-boot-on; >>>> status = "okay"; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts >>>> index 92de83dd4dbc..4e45269fcdff 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-firefly.dts >>>> @@ -208,6 +208,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <430000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc_sys>; >>>> }; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts b/arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts >>>> index c133e8d64b2a..692f3154edc3 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-hugsun-x99.dts >>>> @@ -100,6 +100,7 @@ >>>> regulator-name = "vdd_log"; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> regulator-always-on; >>>> regulator-boot-on; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi >>>> index 4944d78a0a1c..c2ac80d99301 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-khadas-edge.dtsi >>>> @@ -79,6 +79,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vsys_3v3>; >>>> }; >>>> >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts b/arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts >>>> index 73be38a53796..c32abcc4ddc1 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-leez-p710.dts >>>> @@ -101,6 +101,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc5v0_sys>; >>>> }; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-orangepi.dts b/arch/arm64/boot/dts/rockchip/rk3399-orangepi.dts >>>> index 0541dfce924d..9d674c51f025 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-orangepi.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-orangepi.dts >>>> @@ -164,6 +164,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc_sys>; >>>> }; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dts b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dts >>>> index 19f7732d728c..7d856ce1d156 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-roc-pc.dts >>>> @@ -129,6 +129,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc3v3_sys>; >>>> }; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts >>>> index e544deb61d28..8fbccbc8bf47 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64.dts >>>> @@ -174,6 +174,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1700000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc5v0_sys>; >>>> }; >>>> }; >>>> diff --git a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >>>> index 1bc1579674e5..f8e2cb8c0624 100644 >>>> --- a/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >>>> +++ b/arch/arm64/boot/dts/rockchip/rk3399-sapphire.dtsi >>>> @@ -133,6 +133,7 @@ >>>> regulator-boot-on; >>>> regulator-min-microvolt = <800000>; >>>> regulator-max-microvolt = <1400000>; >>>> + regulator-init-microvolt = <950000>; >>>> vin-supply = <&vcc_sys>; >>>> }; >>>> }; >> >> > > >
| |