[PATCH v7 25/47] ARM: tegra: Add DVFS properties to Tegra20 EMC device-tree node

[Dmitry Osipenko]

Add EMC OPP DVFS table that will be used for dynamic scaling of memory
frequency/voltage. Update board device-trees with optional EMC core supply
and remove unsupported OPPs.

Signed-off-by: Dmitry Osipenko <digetx at gmail.com>
---
 .../boot/dts/tegra20-acer-a500-picasso.dts    |  7 ++
 arch/arm/boot/dts/tegra20-colibri.dtsi        |  4 +
 arch/arm/boot/dts/tegra20-paz00.dts           |  6 ++
 .../arm/boot/dts/tegra20-peripherals-opp.dtsi | 92 +++++++++++++++++++
 arch/arm/boot/dts/tegra20.dtsi                |  3 +
 5 files changed, 112 insertions(+)
 create mode 100644 arch/arm/boot/dts/tegra20-peripherals-opp.dtsi

diff --git a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
index a0b829738e8f..b4ed88802387 100644
--- a/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
+++ b/arch/arm/boot/dts/tegra20-acer-a500-picasso.dts
@@ -1061,6 +1061,8 @@ map0 {
 	memory-controller at 7000f400 {
 		nvidia,use-ram-code;
 
+		core-supply = <&vdd_core>;
+
 		emc-tables at 0 {
 			nvidia,ram-code = <0>; /* elpida-8gb */
 
@@ -1450,3 +1452,8 @@ emc-table at 300000 {
 		};
 	};
 };
+
+&emc_icc_dvfs_opp_table {
+	/delete-node/ opp at 666000000;
+	/delete-node/ opp at 760000000;
+};
diff --git a/arch/arm/boot/dts/tegra20-colibri.dtsi b/arch/arm/boot/dts/tegra20-colibri.dtsi
index 6162d193e12c..585a5b441cf6 100644
--- a/arch/arm/boot/dts/tegra20-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra20-colibri.dtsi
@@ -742,6 +742,10 @@ sound {
 	};
 };
 
+&emc_icc_dvfs_opp_table {
+	/delete-node/ opp at 760000000;
+};
+
 &gpio {
 	lan-reset-n {
 		gpio-hog;
diff --git a/arch/arm/boot/dts/tegra20-paz00.dts b/arch/arm/boot/dts/tegra20-paz00.dts
index ada2bed8b1b5..52a81d888424 100644
--- a/arch/arm/boot/dts/tegra20-paz00.dts
+++ b/arch/arm/boot/dts/tegra20-paz00.dts
@@ -314,6 +314,8 @@ nvec at 7000c500 {
 	memory-controller at 7000f400 {
 		nvidia,use-ram-code;
 
+		core-supply = <&core_vdd_reg>;
+
 		emc-tables at 0 {
 			nvidia,ram-code = <0x0>;
 			#address-cells = <1>;
@@ -662,3 +664,7 @@ cpu at 1 {
 		};
 	};
 };
+
+&emc_icc_dvfs_opp_table {
+	/delete-node/ opp at 760000000;
+};
diff --git a/arch/arm/boot/dts/tegra20-peripherals-opp.dtsi b/arch/arm/boot/dts/tegra20-peripherals-opp.dtsi
new file mode 100644
index 000000000000..25b1ba73951e
--- /dev/null
+++ b/arch/arm/boot/dts/tegra20-peripherals-opp.dtsi
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/ {
+	emc_icc_dvfs_opp_table: emc-dvfs-opp-table {
+		compatible = "operating-points-v2";
+
+		opp at 36000000 {
+			opp-microvolt = <950000 950000 1300000>;
+			opp-hz = /bits/ 64 <36000000>;
+		};
+
+		opp at 47500000 {
+			opp-microvolt = <950000 950000 1300000>;
+			opp-hz = /bits/ 64 <47500000>;
+		};
+
+		opp at 50000000 {
+			opp-microvolt = <950000 950000 1300000>;
+			opp-hz = /bits/ 64 <50000000>;
+		};
+
+		opp at 54000000 {
+			opp-microvolt = <950000 950000 1300000>;
+			opp-hz = /bits/ 64 <54000000>;
+		};
+
+		opp at 57000000 {
+			opp-microvolt = <950000 950000 1300000>;
+			opp-hz = /bits/ 64 <57000000>;
+		};
+
+		opp at 100000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <100000000>;
+		};
+
+		opp at 108000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <108000000>;
+		};
+
+		opp at 126666000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <126666000>;
+		};
+
+		opp at 150000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <150000000>;
+		};
+
+		opp at 190000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <190000000>;
+		};
+
+		opp at 216000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <216000000>;
+		};
+
+		opp at 300000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <300000000>;
+		};
+
+		opp at 333000000 {
+			opp-microvolt = <1000000 1000000 1300000>;
+			opp-hz = /bits/ 64 <333000000>;
+		};
+
+		opp at 380000000 {
+			opp-microvolt = <1100000 1100000 1300000>;
+			opp-hz = /bits/ 64 <380000000>;
+		};
+
+		opp at 600000000 {
+			opp-microvolt = <1200000 1200000 1300000>;
+			opp-hz = /bits/ 64 <600000000>;
+		};
+
+		opp at 666000000 {
+			opp-microvolt = <1200000 1200000 1300000>;
+			opp-hz = /bits/ 64 <666000000>;
+		};
+
+		opp at 760000000 {
+			opp-microvolt = <1300000 1300000 1300000>;
+			opp-hz = /bits/ 64 <760000000>;
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 8f8ad81916e7..6ce498178105 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -6,6 +6,8 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/soc/tegra-pmc.h>
 
+#include "tegra20-peripherals-opp.dtsi"
+
 / {
 	compatible = "nvidia,tegra20";
 	interrupt-parent = <&lic>;
@@ -664,6 +666,7 @@ emc: memory-controller at 7000f400 {
 		#size-cells = <0>;
 		#interconnect-cells = <0>;
 
+		operating-points-v2 = <&emc_icc_dvfs_opp_table>;
 		nvidia,memory-controller = <&mc>;
 	};
 
-- 
2.27.0