[PATCH v8 24/26] ARM: tegra: Add DVFS properties to Tegra20 EMC device-tree node

Dmitry Osipenko
2020-11-11T01:16:23Z

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@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@7000f400 {
nvidia,use-ram-code;

+ core-supply = <&vdd_core>;
+
emc-tables@0 {
nvidia,ram-code = <0>; /* elpida-8gb */

@@ -1450,3 +1452,8 @@ emc-table@300000 {
};
};
};
+
+&emc_icc_dvfs_opp_table {
+ /delete-node/ opp@666000000;
+ /delete-node/ opp@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@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@7000c500 {
memory-controller@7000f400 {
nvidia,use-ram-code;

+ core-supply = <&core_vdd_reg>;
+
emc-tables@0 {
nvidia,ram-code = <0x0>;
#address-cells = <1>;
@@ -662,3 +664,7 @@ cpu@1 {
};
};
};
+
+&emc_icc_dvfs_opp_table {
+ /delete-node/ opp@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@36000000 {
+ opp-microvolt = <950000 950000 1300000>;
+ opp-hz = /bits/ 64 <36000000>;
+ };
+
+ opp@47500000 {
+ opp-microvolt = <950000 950000 1300000>;
+ opp-hz = /bits/ 64 <47500000>;
+ };
+
+ opp@50000000 {
+ opp-microvolt = <950000 950000 1300000>;
+ opp-hz = /bits/ 64 <50000000>;
+ };
+
+ opp@54000000 {
+ opp-microvolt = <950000 950000 1300000>;
+ opp-hz = /bits/ 64 <54000000>;
+ };
+
+ opp@57000000 {
+ opp-microvolt = <950000 950000 1300000>;
+ opp-hz = /bits/ 64 <57000000>;
+ };
+
+ opp@100000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <100000000>;
+ };
+
+ opp@108000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <108000000>;
+ };
+
+ opp@126666000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <126666000>;
+ };
+
+ opp@150000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <150000000>;
+ };
+
+ opp@190000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <190000000>;
+ };
+
+ opp@216000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <216000000>;
+ };
+
+ opp@300000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <300000000>;
+ };
+
+ opp@333000000 {
+ opp-microvolt = <1000000 1000000 1300000>;
+ opp-hz = /bits/ 64 <333000000>;
+ };
+
+ opp@380000000 {
+ opp-microvolt = <1100000 1100000 1300000>;
+ opp-hz = /bits/ 64 <380000000>;
+ };
+
+ opp@600000000 {
+ opp-microvolt = <1200000 1200000 1300000>;
+ opp-hz = /bits/ 64 <600000000>;
+ };
+
+ opp@666000000 {
+ opp-microvolt = <1200000 1200000 1300000>;
+ opp-hz = /bits/ 64 <666000000>;
+ };
+
+ opp@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@7000f400 {
#size-cells = <0>;
#interconnect-cells = <0>;

+ operating-points-v2 = <&emc_icc_dvfs_opp_table>;
nvidia,memory-controller = <&mc>;
};

--
2.29.2