| Message ID | 20231222111407.104270-4-fusibrandon13@gmail.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | Add support for reading D1 efuse speed bin | expand |
On 22-12-23, 12:14, Brandon Cheo Fusi wrote: > Specify two voltage ranges, in order of increasing stability, > for each OPP. > > Also define an nvmem cpu speed grade cell of length 2. > > Link: https://github.com/Tina-Linux/linux-5.4/blob/master/arch/riscv/boot/dts/sunxi/sun20iw1p1.dtsi#L118-L133 > Link: https://github.com/mangopi-sbc/tina-linux-5.4/blob/0d4903ebd9d2194ad914686d5b0fc1ddacf11a9d/arch/riscv/boot/dts/sunxi/sun20iw1p1.dtsi#L118-L182 > > Signed-off-by: Brandon Cheo Fusi <fusibrandon13@gmail.com> > --- > arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 19 ++++++++++++++++--- > 1 file changed, 16 insertions(+), 3 deletions(-) > > diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > index 64c3c2e6c..7e2e015e0 100644 > --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi > @@ -39,16 +39,23 @@ cpu0_intc: interrupt-controller { > }; > > opp_table_cpu: opp-table-cpu { > - compatible = "operating-points-v2"; > + compatible = "allwinner,sun20i-d1-operating-points"; > + nvmem-cells = <&cpu_speed_grade>; > + nvmem-cell-names = "speed"; > + opp-shared; > > opp-408000000 { > opp-hz = /bits/ 64 <408000000>; > - opp-microvolt = <900000 900000 1100000>; > + > + opp-microvolt-speed0 = <950000 950000 1100000>; > + opp-microvolt-speed1 = <900000 900000 1100000>; > }; > > opp-1080000000 { > opp-hz = /bits/ 64 <1008000000>; > - opp-microvolt = <900000 900000 1100000>; > + > + opp-microvolt-speed0 = <1100000>; I was expecting the above two lines to have same values. Why change them ? > + opp-microvolt-speed1 = <950000 950000 1100000>; > }; > }; > > @@ -115,3 +122,9 @@ pmu { > <0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>; > }; > }; > + > +&sid { > + cpu_speed_grade: cpu-speed-grade@0 { > + reg = <0x00 0x2>; > + }; > +}; > -- > 2.30.2
diff --git a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi index 64c3c2e6c..7e2e015e0 100644 --- a/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi +++ b/arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi @@ -39,16 +39,23 @@ cpu0_intc: interrupt-controller { }; opp_table_cpu: opp-table-cpu { - compatible = "operating-points-v2"; + compatible = "allwinner,sun20i-d1-operating-points"; + nvmem-cells = <&cpu_speed_grade>; + nvmem-cell-names = "speed"; + opp-shared; opp-408000000 { opp-hz = /bits/ 64 <408000000>; - opp-microvolt = <900000 900000 1100000>; + + opp-microvolt-speed0 = <950000 950000 1100000>; + opp-microvolt-speed1 = <900000 900000 1100000>; }; opp-1080000000 { opp-hz = /bits/ 64 <1008000000>; - opp-microvolt = <900000 900000 1100000>; + + opp-microvolt-speed0 = <1100000>; + opp-microvolt-speed1 = <950000 950000 1100000>; }; }; @@ -115,3 +122,9 @@ pmu { <0x00000000 0x0000000f 0xffffffff 0xffffffff 0x00020000>; }; }; + +&sid { + cpu_speed_grade: cpu-speed-grade@0 { + reg = <0x00 0x2>; + }; +};
Specify two voltage ranges, in order of increasing stability, for each OPP. Also define an nvmem cpu speed grade cell of length 2. Link: https://github.com/Tina-Linux/linux-5.4/blob/master/arch/riscv/boot/dts/sunxi/sun20iw1p1.dtsi#L118-L133 Link: https://github.com/mangopi-sbc/tina-linux-5.4/blob/0d4903ebd9d2194ad914686d5b0fc1ddacf11a9d/arch/riscv/boot/dts/sunxi/sun20iw1p1.dtsi#L118-L182 Signed-off-by: Brandon Cheo Fusi <fusibrandon13@gmail.com> --- arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)