diff mbox series

[v5,7/8] arm64: tegra: Add external memory controller node for Tegra210

Message ID 20200310152003.2945170-8-thierry.reding@gmail.com
State New
Headers show
Series Add EMC scaling support for Tegra210 | expand

Commit Message

Thierry Reding March 10, 2020, 3:20 p.m. UTC
From: Joseph Lo <josephl@nvidia.com>

Add external memory controller (EMC) node for Tegra210

Signed-off-by: Joseph Lo <josephl@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
---
Changes in v5:
- drop list of clocks because we need very strict ordering that DT can't
  guarantee
- drop hard-coded EMC table, bootloaders should add it dynamically

 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 11 +++++++++++
 1 file changed, 11 insertions(+)
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Patch

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 64c46ce3849d..3fa92dd8350b 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -895,6 +895,17 @@  mc: memory-controller@70019000 {
 		#iommu-cells = <1>;
 	};
 
+	external-memory-controller@7001b000 {
+		compatible = "nvidia,tegra210-emc";
+		reg = <0x0 0x7001b000 0x0 0x1000>,
+		      <0x0 0x7001e000 0x0 0x1000>,
+		      <0x0 0x7001f000 0x0 0x1000>;
+		clocks = <&tegra_car TEGRA210_CLK_EMC>;
+		clock-names = "emc";
+		interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>;
+		nvidia,memory-controller = <&mc>;
+	};
+
 	sata@70020000 {
 		compatible = "nvidia,tegra210-ahci";
 		reg = <0x0 0x70027000 0x0 0x2000>, /* AHCI */