Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-10-10 Thread Hans de Goede
Hi, On 21-09-16 20:08, Jens Kuske wrote: H3 seems to have a silicon bug breaking the impedance calibration. This is currently worked around in software by multiple steps combining the results to replace the wrong values. Revision A chips need a different workaround, which is present in the vend

Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-30 Thread Jagan Teki
On Fri, Sep 30, 2016 at 7:55 PM, Jens Kuske wrote: > On 30.09.2016 15:17, Jagan Teki wrote: >> On Fri, Sep 30, 2016 at 6:20 PM, Jens Kuske wrote: >>> On 30.09.2016 14:24, Jagan Teki wrote: On Wed, Sep 21, 2016 at 11:38 PM, Jens Kuske wrote: > H3 seems to have a silicon bug breaking the

Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-30 Thread Jens Kuske
On 30.09.2016 15:17, Jagan Teki wrote: > On Fri, Sep 30, 2016 at 6:20 PM, Jens Kuske wrote: >> On 30.09.2016 14:24, Jagan Teki wrote: >>> On Wed, Sep 21, 2016 at 11:38 PM, Jens Kuske wrote: H3 seems to have a silicon bug breaking the impedance calibration. This is currently worked aroun

Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-30 Thread Jagan Teki
On Fri, Sep 30, 2016 at 6:20 PM, Jens Kuske wrote: > On 30.09.2016 14:24, Jagan Teki wrote: >> On Wed, Sep 21, 2016 at 11:38 PM, Jens Kuske wrote: >>> H3 seems to have a silicon bug breaking the impedance calibration. >>> This is currently worked around in software by multiple steps >>> combining

Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-30 Thread Jens Kuske
On 30.09.2016 14:24, Jagan Teki wrote: > On Wed, Sep 21, 2016 at 11:38 PM, Jens Kuske wrote: >> H3 seems to have a silicon bug breaking the impedance calibration. >> This is currently worked around in software by multiple steps >> combining the results to replace the wrong values. >> >> Revision A

Re: [U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-30 Thread Jagan Teki
On Wed, Sep 21, 2016 at 11:38 PM, Jens Kuske wrote: > H3 seems to have a silicon bug breaking the impedance calibration. > This is currently worked around in software by multiple steps > combining the results to replace the wrong values. > > Revision A chips need a different workaround, which is p

[U-Boot] [PATCH] sunxi: Fix H3 DRAM impedance calibration on rev. A chips

2016-09-21 Thread Jens Kuske
H3 seems to have a silicon bug breaking the impedance calibration. This is currently worked around in software by multiple steps combining the results to replace the wrong values. Revision A chips need a different workaround, which is present in the vendor bootloader too, but got overlooked in lac