diff options
| author | Thierry Reding <treding@nvidia.com> | 2020-04-09 19:34:29 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2020-05-20 15:26:08 +0200 |
| commit | e12325f699e6fb396870e9479007fb0069574235 (patch) | |
| tree | 3f9e843d9c973398303ed5a7897b948dd36c8217 /arch/arm64/boot/dts/nvidia/tegra210.dtsi | |
| parent | cd9350c55b5b76a758eadd057891f1c4c4986fce (diff) | |
arm64: tegra: Hook up EMC cooling device
The external memory controller can be used as a cooling device for the
LPDDR chips. Hook it up to the "mem" thermal zone of the SOCTHERM block
so that temperature polling can be enabled on the EMC when a given
temperature is exceeded.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'arch/arm64/boot/dts/nvidia/tegra210.dtsi')
| -rw-r--r-- | arch/arm64/boot/dts/nvidia/tegra210.dtsi | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi index 3fa92dd8350b..a550e7b828e6 100644 --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi @@ -895,7 +895,7 @@ #iommu-cells = <1>; }; - external-memory-controller@7001b000 { + emc: external-memory-controller@7001b000 { compatible = "nvidia,tegra210-emc"; reg = <0x0 0x7001b000 0x0 0x1000>, <0x0 0x7001e000 0x0 0x1000>, @@ -904,6 +904,7 @@ clock-names = "emc"; interrupts = <GIC_SPI 78 IRQ_TYPE_LEVEL_HIGH>; nvidia,memory-controller = <&mc>; + #cooling-cells = <2>; }; sata@70020000 { @@ -1561,6 +1562,18 @@ <&soctherm TEGRA124_SOCTHERM_SENSOR_MEM>; trips { + dram_nominal: mem-nominal-trip { + temperature = <50000>; + hysteresis = <1000>; + type = "passive"; + }; + + dram_throttle: mem-throttle-trip { + temperature = <70000>; + hysteresis = <1000>; + type = "active"; + }; + mem-shutdown-trip { temperature = <103000>; hysteresis = <0>; @@ -1569,10 +1582,15 @@ }; cooling-maps { - /* - * There are currently no cooling maps, - * because there are no cooling devices. - */ + dram-passive { + cooling-device = <&emc 0 0>; + trip = <&dram_nominal>; + }; + + dram-active { + cooling-device = <&emc 1 1>; + trip = <&dram_throttle>; + }; }; }; |