2019-09-12 02:59:43

by Anson Huang

Subject: [PATCH 1/2] ARM: dts: imx7d: Correct speed grading fuse settings

The 800MHz opp speed grading fuse mask should be 0xd instead
of 0xf according to fuse map definition:

SPEED_GRADING[1:0] MHz
00 800
01 500
10 1000
11 1200

Signed-off-by: Anson Huang <[email protected]>
---
arch/arm/boot/dts/imx7d.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
index 9c8dd32..0083272 100644
--- a/arch/arm/boot/dts/imx7d.dtsi
+++ b/arch/arm/boot/dts/imx7d.dtsi
@@ -43,7 +43,7 @@
opp-hz = /bits/ 64 <792000000>;
opp-microvolt = <1000000>;
clock-latency-ns = <150000>;
- opp-supported-hw = <0xf>, <0xf>;
+ opp-supported-hw = <0xd>, <0xf>;
};

opp-996000000 {
--
2.7.4

2019-09-12 20:18:55

by Leonard Crestez

Subject: Re: [PATCH 1/2] ARM: dts: imx7d: Correct speed grading fuse settings

On 2019-09-12 5:57 AM, Anson Huang wrote:
> The 800MHz opp speed grading fuse mask should be 0xd instead
> of 0xf according to fuse map definition:
>
> SPEED_GRADING[1:0] MHz
> 00 800
> 01 500
> 10 1000
> 11 1200
>
> Signed-off-by: Anson Huang <[email protected]>

Reviewed-by: Leonard Crestez <[email protected]>

Are you going to add the 500mhz OPP as well?

2019-09-16 08:44:05

by Anson Huang

Subject: RE: [PATCH 1/2] ARM: dts: imx7d: Correct speed grading fuse settings

Hi, Leonard

> On 2019-09-12 5:57 AM, Anson Huang wrote:
> > The 800MHz opp speed grading fuse mask should be 0xd instead of 0xf
> > according to fuse map definition:
> >
> > SPEED_GRADING[1:0] MHz
> > 00 800
> > 01 500
> > 10 1000
> > 11 1200
> >
> > Signed-off-by: Anson Huang <[email protected]>
>
> Reviewed-by: Leonard Crestez <[email protected]>
>
> Are you going to add the 500mhz OPP as well?

So far no, as datasheet does NOT list 500MHz as OPP, this patch is just to make sure
the speed grading mask settings matches the fusemap file, NOT sure if 500MHz will be supported
officially.

Anson

2019-10-06 08:13:24

by Shawn Guo

Subject: Re: [PATCH 1/2] ARM: dts: imx7d: Correct speed grading fuse settings

On Thu, Sep 12, 2019 at 10:56:31AM +0800, Anson Huang wrote:
> The 800MHz opp speed grading fuse mask should be 0xd instead
> of 0xf according to fuse map definition:
>
> SPEED_GRADING[1:0] MHz
> 00 800
> 01 500
> 10 1000
> 11 1200
>
> Signed-off-by: Anson Huang <[email protected]>

Applied both, thanks.