On 19.01.2020 12:09, Peng Fan wrote:
> From: Peng Fan <peng.fan@xxxxxxx>
>
> Per i.MX7D Document Number: IMX7DCEC Rev. 6, 03/2019,
> there are only consumer/industrial parts, and 1.2GHz
> is only support in consumer parts.
>
> So exclude automotive from 792/996MHz/1.2GHz and exclude
> industrial from 1.2GHz.
>
> Fixes: d7bfba7296ca ("ARM: dts: imx7d: Update cpufreq OPP table")
> Cc: Leonard Crestez <leonard.crestez@xxxxxxx> > Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
My initial logic was that there is no particular reason to guard against
parts which are not documented to exist so checking the speed grading
should be sufficient.
With this patch if an imx7d chip with automotive qualification is
released in the future (unlikely) then dtsi changes will be required
before enabling cpufreq. This is not unreasonable.
Reviewed-by: Leonard Crestez <leonard.crestez@xxxxxxx>
> ---
> arch/arm/boot/dts/imx7d.dtsi | 6 +++---
> 1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/arch/arm/boot/dts/imx7d.dtsi b/arch/arm/boot/dts/imx7d.dtsi
> index 92f6d0c2a74f..4c22828df55f 100644
> --- a/arch/arm/boot/dts/imx7d.dtsi
> +++ b/arch/arm/boot/dts/imx7d.dtsi
> @@ -44,7 +44,7 @@
> opp-hz = /bits/ 64 <792000000>;
> opp-microvolt = <1000000>;
> clock-latency-ns = <150000>;
> - opp-supported-hw = <0xd>, <0xf>;
> + opp-supported-hw = <0xd>, <0x7>;
> opp-suspend;
> };
>
> @@ -52,7 +52,7 @@
> opp-hz = /bits/ 64 <996000000>;
> opp-microvolt = <1100000>;
> clock-latency-ns = <150000>;
> - opp-supported-hw = <0xc>, <0xf>;
> + opp-supported-hw = <0xc>, <0x7>;
> opp-suspend;
> };
>
> @@ -60,7 +60,7 @@
> opp-hz = /bits/ 64 <1200000000>;
> opp-microvolt = <1225000>;
> clock-latency-ns = <150000>;
> - opp-supported-hw = <0x8>, <0xf>;
> + opp-supported-hw = <0x8>, <0x3>;
> opp-suspend;
> };
> };
>
