[01/20] arm64: dts: renesas: r8a774e1: Add operating points
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Message ID 1594811350-14066-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com
State New
Headers show
Series
  • Add support for [H]SCIF/TMU/CMT/THS/SDHI/MSIOF/CAN[FD]/I2C/IIC/RWDT on R8A774E1
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Commit Message

Lad Prabhakar July 15, 2020, 11:08 a.m. UTC
From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>

The RZ/G2H (r8a774e1) comes with two clusters of processors, similarly to
the r8a774a1. The first cluster is made of A57s, the second cluster is made
of A53s.

The operating points for the cluster with the A57s are:

Frequency | Voltage
----------|---------
500 MHz   | 0.82V
1.0 GHz   | 0.82V
1.5 GHz   | 0.82V

The operating points for the cluster with the A53s are:

Frequency | Voltage
----------|---------
800 MHz   | 0.82V
1.0 GHz   | 0.82V
1.2 GHz   | 0.82V

This patch adds the definitions for the operating points to the SoC
specific DT.

Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 arch/arm64/boot/dts/renesas/r8a774e1.dtsi | 51 +++++++++++++++++++++++
 1 file changed, 51 insertions(+)

Comments

Geert Uytterhoeven July 16, 2020, 3:38 p.m. UTC | #1
Hi Prabhakar,

On Wed, Jul 15, 2020 at 1:09 PM Lad Prabhakar
<prabhakar.mahadev-lad.rj@bp.renesas.com> wrote:
> From: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
>
> The RZ/G2H (r8a774e1) comes with two clusters of processors, similarly to
> the r8a774a1. The first cluster is made of A57s, the second cluster is made
> of A53s.
>
> The operating points for the cluster with the A57s are:
>
> Frequency | Voltage
> ----------|---------
> 500 MHz   | 0.82V
> 1.0 GHz   | 0.82V
> 1.5 GHz   | 0.82V
>
> The operating points for the cluster with the A53s are:
>
> Frequency | Voltage
> ----------|---------
> 800 MHz   | 0.82V
> 1.0 GHz   | 0.82V
> 1.2 GHz   | 0.82V

I trust you on the actual values...

>
> This patch adds the definitions for the operating points to the SoC
> specific DT.
>
> Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com>
> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-devel for v5.9.

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

Patch
diff mbox series

diff --git a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
index caca319aafcf..588de69734ef 100644
--- a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
@@ -34,6 +34,49 @@ 
 		clock-frequency = <0>;
 	};
 
+	cluster0_opp: 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>;
+			opp-suspend;
+		};
+	};
+
+	cluster1_opp: opp_table1 {
+		compatible = "operating-points-v2";
+		opp-shared;
+
+		opp-800000000 {
+			opp-hz = /bits/ 64 <800000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1000000000 {
+			opp-hz = /bits/ 64 <1000000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+		opp-1200000000 {
+			opp-hz = /bits/ 64 <1200000000>;
+			opp-microvolt = <820000>;
+			clock-latency-ns = <300000>;
+		};
+	};
+
 	cpus {
 		#address-cells = <1>;
 		#size-cells = <0>;
@@ -79,6 +122,7 @@ 
 			enable-method = "psci";
 			dynamic-power-coefficient = <854>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
 			#cooling-cells = <2>;
 		};
@@ -91,6 +135,7 @@ 
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
 			#cooling-cells = <2>;
 		};
@@ -103,6 +148,7 @@ 
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
 			#cooling-cells = <2>;
 		};
@@ -115,6 +161,7 @@ 
 			next-level-cache = <&L2_CA57>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z>;
+			operating-points-v2 = <&cluster0_opp>;
 			capacity-dmips-mhz = <1024>;
 			#cooling-cells = <2>;
 		};
@@ -129,6 +176,7 @@ 
 			#cooling-cells = <2>;
 			dynamic-power-coefficient = <277>;
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
 		};
 
@@ -140,6 +188,7 @@ 
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
 		};
 
@@ -151,6 +200,7 @@ 
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
 		};
 
@@ -162,6 +212,7 @@ 
 			next-level-cache = <&L2_CA53>;
 			enable-method = "psci";
 			clocks = <&cpg CPG_CORE R8A774E1_CLK_Z2>;
+			operating-points-v2 = <&cluster1_opp>;
 			capacity-dmips-mhz = <535>;
 		};