* About the commit imx: mx6ull: update the REFTOP_VBGADJ setting
@ 2020-12-04 21:44 Michael Nazzareno Trimarchi
2020-12-06 10:18 ` Michael Nazzareno Trimarchi
0 siblings, 1 reply; 2+ messages in thread
From: Michael Nazzareno Trimarchi @ 2020-12-04 21:44 UTC (permalink / raw)
To: u-boot
Hi Peng
I have a design with imx6ull that is running properly according to the
manufacturer with the old REFTOP_VBGA set
BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ,. With this commit, the TJunction of
the CPU is around 8 degree more than without. The commit message does
not provide any info
According to the design team, we need to set REFTOP_VBGADJ
in PMU MISC0 according to the REFTOP_TRIM[2:0] fuse. the
actually table is as below:
'000" - set REFTOP_VBGADJ[2:0] to 3'b000
'001" - set REFTOP_VBGADJ[2:0] to 3'b001
'010" - set REFTOP_VBGADJ[2:0] to 3'b010
'011" - set REFTOP_VBGADJ[2:0] to 3'b011
'100" - set REFTOP_VBGADJ[2:0] to 3'b100
'101" - set REFTOP_VBGADJ[2:0] to 3'b101
'110" - set REFTOP_VBGADJ[2:0] to 3'b110
'111" - set REFTOP_VBGADJ[2:0] to 3'b111
Can someone describe to me better? The device needs to run in a very
hot environment and 10 to 8 degrees on the junction
are really important.
In the same environment:
temp without this patch 34
temp with is 43
Register value is
0x240080E8
and
0x24008088
Michael
--
Michael Nazzareno Trimarchi
Amarula Solutions BV
COO Co-Founder
Cruquiuskade 47 Amsterdam 1018 AM NL
T. +31(0)851119172
M. +39(0)3479132170
[`as] https://www.amarulasolutions.com
^ permalink raw reply [flat|nested] 2+ messages in thread
* About the commit imx: mx6ull: update the REFTOP_VBGADJ setting
2020-12-04 21:44 About the commit imx: mx6ull: update the REFTOP_VBGADJ setting Michael Nazzareno Trimarchi
@ 2020-12-06 10:18 ` Michael Nazzareno Trimarchi
0 siblings, 0 replies; 2+ messages in thread
From: Michael Nazzareno Trimarchi @ 2020-12-06 10:18 UTC (permalink / raw)
To: u-boot
Hi
On Fri, Dec 4, 2020 at 10:44 PM Michael Nazzareno Trimarchi
<michael@amarulasolutions.com> wrote:
>
> Hi Peng
>
> I have a design with imx6ull that is running properly according to the
> manufacturer with the old REFTOP_VBGA set
> BM_ANADIG_ANA_MISC0_REFTOP_VBGADJ,. With this commit, the TJunction of
> the CPU is around 8 degree more than without. The commit message does
> not provide any info
>
> According to the design team, we need to set REFTOP_VBGADJ
> in PMU MISC0 according to the REFTOP_TRIM[2:0] fuse. the
> actually table is as below:
>
> '000" - set REFTOP_VBGADJ[2:0] to 3'b000
> '001" - set REFTOP_VBGADJ[2:0] to 3'b001
> '010" - set REFTOP_VBGADJ[2:0] to 3'b010
> '011" - set REFTOP_VBGADJ[2:0] to 3'b011
> '100" - set REFTOP_VBGADJ[2:0] to 3'b100
> '101" - set REFTOP_VBGADJ[2:0] to 3'b101
> '110" - set REFTOP_VBGADJ[2:0] to 3'b110
> '111" - set REFTOP_VBGADJ[2:0] to 3'b111
>
> Can someone describe to me better? The device needs to run in a very
> hot environment and 10 to 8 degrees on the junction
> are really important.
I think that is used as reference temperatur too, for measuring
temperature in the processor.
I think that i need to ask to us a thermal camera
Michael
>
> In the same environment:
> temp without this patch 34
> temp with is 43
>
> Register value is
> 0x240080E8
> and
> 0x24008088
>
> Michael
>
>
> --
> Michael Nazzareno Trimarchi
> Amarula Solutions BV
> COO Co-Founder
> Cruquiuskade 47 Amsterdam 1018 AM NL
> T. +31(0)851119172
> M. +39(0)3479132170
> [`as] https://www.amarulasolutions.com
--
Michael Nazzareno Trimarchi
Amarula Solutions BV
COO Co-Founder
Cruquiuskade 47 Amsterdam 1018 AM NL
T. +31(0)851119172
M. +39(0)3479132170
[`as] https://www.amarulasolutions.com
^ permalink raw reply [flat|nested] 2+ messages in thread
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2020-12-04 21:44 About the commit imx: mx6ull: update the REFTOP_VBGADJ setting Michael Nazzareno Trimarchi
2020-12-06 10:18 ` Michael Nazzareno Trimarchi
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