| Message ID | 5731678E.3080003@rvc.renesas.com (mailing list archive) |
|---|---|
| State | RFC |
| Delegated to: | Simon Horman |
| Headers | show |
On Tue, May 10, 2016 at 6:46 AM, Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com> wrote: > This patch adds Z clock scaling support for CA57 in R8A7795 SoC. > An OPP table is created with the supported frequency scaling. > > Signed-off-by: Dien Pham <dien.pham.ry@rvc.renesas.com> > Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com> > Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com> > --- > arch/arm64/boot/dts/renesas/r8a7795.dtsi | 26 ++++++++++++++++++++++++++ > 1 file changed, 26 insertions(+) > > diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi > b/arch/arm64/boot/dts/renesas/r8a7795.dtsi > index 7181db0..041d0f2 100644 > --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi > +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi > @@ -43,6 +43,8 @@ > power-domains = <&sysc R8A7795_PD_CA57_CPU0>; > next-level-cache = <&L2_CA57>; > enable-method = "psci"; > + clocks =<&cpg CPG_CORE R8A7795_CLK_Z>; > + operating-points-v2 = <&cluster0_opp_tb0>; > }; > > a57_1: cpu@1 { > @@ -52,6 +54,7 @@ > power-domains = <&sysc R8A7795_PD_CA57_CPU1>; > next-level-cache = <&L2_CA57>; > enable-method = "psci"; > + operating-points-v2 = <&cluster0_opp_tb0>; > }; > a57_2: cpu@2 { > compatible = "arm,cortex-a57","arm,armv8"; > @@ -60,6 +63,7 @@ > power-domains = <&sysc R8A7795_PD_CA57_CPU2>; > next-level-cache = <&L2_CA57>; > enable-method = "psci"; > + operating-points-v2 = <&cluster0_opp_tb0>; > }; > a57_3: cpu@3 { > compatible = "arm,cortex-a57","arm,armv8"; > @@ -68,6 +72,28 @@ > power-domains = <&sysc R8A7795_PD_CA57_CPU3>; > next-level-cache = <&L2_CA57>; > enable-method = "psci"; > + operating-points-v2 = <&cluster0_opp_tb0>; > + }; > + }; > + > + cluster0_opp_tb0: opp_table0 { > + compatible = "operating-points-v2"; > + opp-shared; > + > + opp@500000000 { > + opp-hz = /bits/ 64 <500000000>; > + opp-microvolt = <820000>; > + clock-latency-ns = <300000>; > + }; > + opp@1000000000 { > + opp-hz = /bits/ 64 <1000000000>; > + opp-microvolt = <820000>; > + clock-latency-ns = <300000>; > + }; > + opp@1500000000 { > + opp-hz = /bits/ 64 <1500000000>; > + opp-microvolt = <820000>; > + clock-latency-ns = <300000>; With W=1: Warning (unit_address_vs_reg): Node /opp_table0/opp@500000000 has a unit name, but no reg property Warning (unit_address_vs_reg): Node /opp_table0/opp@1000000000 has a unit name, but no reg property Warning (unit_address_vs_reg): Node /opp_table0/opp@1500000000 has a unit name, but no reg property Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds
diff --git a/arch/arm64/boot/dts/renesas/r8a7795.dtsi b/arch/arm64/boot/dts/renesas/r8a7795.dtsi index 7181db0..041d0f2 100644 --- a/arch/arm64/boot/dts/renesas/r8a7795.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a7795.dtsi @@ -43,6 +43,8 @@ power-domains = <&sysc R8A7795_PD_CA57_CPU0>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + clocks =<&cpg CPG_CORE R8A7795_CLK_Z>; + operating-points-v2 = <&cluster0_opp_tb0>; }; a57_1: cpu@1 { @@ -52,6 +54,7 @@ power-domains = <&sysc R8A7795_PD_CA57_CPU1>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + operating-points-v2 = <&cluster0_opp_tb0>; }; a57_2: cpu@2 { compatible = "arm,cortex-a57","arm,armv8"; @@ -60,6 +63,7 @@ power-domains = <&sysc R8A7795_PD_CA57_CPU2>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + operating-points-v2 = <&cluster0_opp_tb0>; }; a57_3: cpu@3 { compatible = "arm,cortex-a57","arm,armv8"; @@ -68,6 +72,28 @@ power-domains = <&sysc R8A7795_PD_CA57_CPU3>; next-level-cache = <&L2_CA57>; enable-method = "psci"; + operating-points-v2 = <&cluster0_opp_tb0>; + }; + }; + + cluster0_opp_tb0: opp_table0 { + compatible = "operating-points-v2"; + opp-shared; + + opp@500000000 { + opp-hz = /bits/ 64 <500000000>; + opp-microvolt = <820000>; + clock-latency-ns = <300000>; + }; + opp@1000000000 { + opp-hz = /bits/ 64 <1000000000>; + opp-microvolt = <820000>; + clock-latency-ns = <300000>; + }; + opp@1500000000 { + opp-hz = /bits/ 64 <1500000000>; + opp-microvolt = <820000>; + clock-latency-ns = <300000>; }; };