[PATCH v3 00/11] Tegra114: implement EMC support

Svyatoslav Ryhel
2025-09-15T08:02:23Z

Add support for External Memory Controller found in Tegra 4 SoC along
with adjustments required for it to work properly.

Tested on ASUS TF701T (T40X) and Nvidia Tegratab (T40S). Both work fine.

---
Changes in v2:
- fix programming completion detection (changed EMC reg to MC reg reading)
- Tegra114 incorporated into Tegra124 dt-bindings schema

Changes in v3:
- adjusted MC and EMC schema to move description and ref into common property
- added Tegra114 support into devfreq driver
- added MC/EMC to DC interconnections
---

Svyatoslav Ryhel (11):
devfreq: tegra30-devfreq: add support for Tegra114
ARM: tegra: Add ACTMON node to Tegra114 device tree
dt-bindings: memory: Document Tegra114 Memory Controller
memory: tegra: implement EMEM regs and ICC ops for Tegra114
dt-bindings: memory: Add Tegra114 memory client IDs
clk: tegra: remove EMC to MC clock mux in Tegra114
dt-bindings: memory: Document Tegra114 External Memory Controller
memory: tegra: Add Tegra114 EMC driver
ARM: tegra: Add External Memory Controller node on Tegra114
ARM: tegra: Add EMC OPP and ICC properties to Tegra114 EMC and ACTMON
device-tree nodes
ARM: tegra: add DC interconnections for Tegra114

.../nvidia,tegra124-emc.yaml | 431 +++--
.../nvidia,tegra124-mc.yaml | 97 +-
.../dts/nvidia/tegra114-peripherals-opp.dtsi | 151 ++
arch/arm/boot/dts/nvidia/tegra114.dtsi | 55 +
drivers/clk/tegra/clk-tegra114.c | 48 +-
drivers/devfreq/tegra30-devfreq.c | 1 +
drivers/memory/tegra/Kconfig | 12 +
drivers/memory/tegra/Makefile | 1 +
drivers/memory/tegra/tegra114-emc.c | 1487 +++++++++++++++++
drivers/memory/tegra/tegra114.c | 193 +++
include/dt-bindings/memory/tegra114-mc.h | 67 +
11 files changed, 2357 insertions(+), 186 deletions(-)
create mode 100644 arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi
create mode 100644 drivers/memory/tegra/tegra114-emc.c

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2.48.1