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

Message ID 1568256992-31707-1-git-send-email-Anson.Huang@nxp.com (mailing list archive)
State Mainlined
Commit f7429d5c27b665de83bd555d6e6e102a51fdc7a5
Headers show
Series [1/2] ARM: dts: imx7d: Correct speed grading fuse settings | expand

Commit Message

Anson Huang Sept. 12, 2019, 2:56 a.m. UTC
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 <Anson.Huang@nxp.com>
---
 arch/arm/boot/dts/imx7d.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Leonard Crestez Sept. 12, 2019, 12:45 p.m. UTC | #1
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 <Anson.Huang@nxp.com>

Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>

Are you going to add the 500mhz OPP as well?
Anson Huang Sept. 16, 2019, 2:55 a.m. UTC | #2
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 <Anson.Huang@nxp.com>
> 
> Reviewed-by: Leonard Crestez <leonard.crestez@nxp.com>
> 
> 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
Shawn Guo Oct. 6, 2019, 8:09 a.m. UTC | #3
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 <Anson.Huang@nxp.com>

Applied both, thanks.
diff mbox series

Patch

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 {