Complete the description of the Cortex-A76 CPU cores and L3 cache
controllers on the Renesas R-Car V4H (R8A779G0) SoC, including CPU
topology and PSCI support for enabling CPU cores.
R-Car V4H has 4 Cortex-A76 cores, grouped in 2 clusters.
Based on a patch in the BSP by Takeshi Kihara.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Changes compared to the BSP:
- Move device_type and enable-method properties,
- Fix PSCI compatible value for PSCI v1.0,
- Drop "arm,armv8" compatible values.
---
arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 70 +++++++++++++++++++++--
1 file changed, 65 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index ef75e2603f5ac9d9..dc5f27c114a7ad96 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -18,12 +18,60 @@ cpus {
#address-cells = <1>;
#size-cells = <0>;
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&a76_0>;
+ };
+ core1 {
+ cpu = <&a76_1>;
+ };
+ };
+
+ cluster1 {
+ core0 {
+ cpu = <&a76_2>;
+ };
+ core1 {
+ cpu = <&a76_3>;
+ };
+ };
+ };
+
a76_0: cpu@0 {
compatible = "arm,cortex-a76";
reg = <0>;
device_type = "cpu";
power-domains = <&sysc R8A779G0_PD_A1E0D0C0>;
next-level-cache = <&L3_CA76_0>;
+ enable-method = "psci";
+ };
+
+ a76_1: cpu@100 {
+ compatible = "arm,cortex-a76";
+ reg = <0x100>;
+ device_type = "cpu";
+ power-domains = <&sysc R8A779G0_PD_A1E0D0C1>;
+ next-level-cache = <&L3_CA76_0>;
+ enable-method = "psci";
+ };
+
+ a76_2: cpu@10000 {
+ compatible = "arm,cortex-a76";
+ reg = <0x10000>;
+ device_type = "cpu";
+ power-domains = <&sysc R8A779G0_PD_A1E0D1C0>;
+ next-level-cache = <&L3_CA76_1>;
+ enable-method = "psci";
+ };
+
+ a76_3: cpu@10100 {
+ compatible = "arm,cortex-a76";
+ reg = <0x10100>;
+ device_type = "cpu";
+ power-domains = <&sysc R8A779G0_PD_A1E0D1C1>;
+ next-level-cache = <&L3_CA76_1>;
+ enable-method = "psci";
};
L3_CA76_0: cache-controller-0 {
@@ -32,6 +80,18 @@ L3_CA76_0: cache-controller-0 {
cache-unified;
cache-level = <3>;
};
+
+ L3_CA76_1: cache-controller-1 {
+ compatible = "cache";
+ power-domains = <&sysc R8A779G0_PD_A2E0D1>;
+ cache-unified;
+ cache-level = <3>;
+ };
+ };
+
+ psci {
+ compatible = "arm,psci-1.0", "arm,psci-0.2";
+ method = "smc";
};
extal_clk: extal {
@@ -1088,7 +1148,7 @@ gic: interrupt-controller@f1000000 {
reg = <0x0 0xf1000000 0 0x20000>,
<0x0 0xf1060000 0 0x110000>;
interrupts = <GIC_PPI 9
- (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_HIGH)>;
+ (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
};
prr: chipid@fff00044 {
@@ -1099,9 +1159,9 @@ prr: chipid@fff00044 {
timer {
compatible = "arm,armv8-timer";
- interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
- <&gic GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
- <&gic GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>,
- <&gic GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(1) | IRQ_TYPE_LEVEL_LOW)>;
+ interrupts-extended = <&gic GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <&gic GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <&gic GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
+ <&gic GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
};
};
--
2.25.1
