Hello Michal,

On 30.6.2016 13:13, Michal Suchanek wrote:

Hello,

On 25 June 2016 at 05:45,  [off-list ref] wrote:

quoted

From: Ondrej Jirman <redacted>

Use Xulong Orange Pi One GPIO based regulator for
passive cooling and thermal management.

Signed-off-by: Ondrej Jirman <redacted>
---
 arch/arm/boot/dts/sun8i-h3-orangepi-one.dts | 39 +++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts b/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts
index b1bd6b0..a38d871 100644
--- a/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts
+++ b/arch/arm/boot/dts/sun8i-h3-orangepi-one.dts

@@ -109,6 +109,45 @@
        };
 };

+&cpu0 {
+       operating-points = <
+               /* kHz    uV */
+               1296000 1300000
+               1200000 1300000

First problem is that the board boots at 1008000 which is not listed
and the kernel complains.

Second problem is that the board locks up during boot with this enabled.

Do you have some suggestion for alternate configuration to test?

I've identified the problem as incorrectly set up gpio-regulator. During
boot, when it was probed, it would be initiualized with 1.1V for a
moment. This caused random non-specific lockups/crashes afterwards.

Fixed patches are in my branch on github, if you want to try again.

  https://github.com/megous/linux/commits/orange-pi-4.7

regards,
  o.

Thanks

Michal

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