| From: |
| Svyatoslav Ryhel <clamor95-AT-gmail.com> |
| To: |
| Krzysztof Kozlowski <krzk-AT-kernel.org>, Rob Herring <robh-AT-kernel.org>, Conor Dooley <conor+dt-AT-kernel.org>, Thierry Reding <treding-AT-nvidia.com>, Thierry Reding <thierry.reding-AT-gmail.com>, Jonathan Hunter <jonathanh-AT-nvidia.com>, Prashant Gaikwad <pgaikwad-AT-nvidia.com>, Mikko Perttunen <mperttunen-AT-nvidia.com>, Michael Turquette <mturquette-AT-baylibre.com>, Stephen Boyd <sboyd-AT-kernel.org>, Dmitry Osipenko <digetx-AT-gmail.com>, MyungJoo Ham <myungjoo.ham-AT-samsung.com>, Kyungmin Park <kyungmin.park-AT-samsung.com>, Chanwoo Choi <cw00.choi-AT-samsung.com>, Svyatoslav Ryhel <clamor95-AT-gmail.com> |
| Subject: |
| [PATCH v4 00/12] Tegra114: implement EMC support |
| Date: |
| Tue, 25 Nov 2025 14:05:47 +0200 |
| Message-ID: |
| <20251125120559.158860-1-clamor95@gmail.com> |
| Cc: |
| linux-kernel-AT-vger.kernel.org, devicetree-AT-vger.kernel.org, linux-tegra-AT-vger.kernel.org, linux-clk-AT-vger.kernel.org, linux-pm-AT-vger.kernel.org |
| Archive-link: |
| Article |
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
Changes in v4:
- fix number of EMC clocks required by activity counter transaction
- set minItems/maxItems for MC and EMC registers
- removed CONFIG_TEGRA124_CLK_EMC ifdefs from clk-tegra114
- minimized changes to tegra114_clock_init
- switch to devm_tegra_core_dev_init_opp_table
- switch to readl_poll_timeout_atomic for polling
- adjust DLL_CHANGE logic
- drop touching EMC_CLKCHANGE_SR_ENABLE
- use for_each_child_of_node_scoped for timing iteration
- add emc-mc timing check
- added print for amount of timings and ramcode
- align commit and code style
---
Svyatoslav Ryhel (12):
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: set up proper EMC clock implementation for Tegra114
dt-bindings: memory: Document Tegra114 External Memory Controller
soc: tegra: common: add Tegra114 support to
devm_tegra_core_dev_init_opp_table
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 | 174 +-
.../nvidia,tegra124-mc.yaml | 31 +-
.../dts/nvidia/tegra114-peripherals-opp.dtsi | 151 ++
arch/arm/boot/dts/nvidia/tegra114.dtsi | 55 +
drivers/clk/tegra/clk-tegra114.c | 39 +-
drivers/devfreq/tegra30-devfreq.c | 17 +-
drivers/memory/tegra/Kconfig | 12 +
drivers/memory/tegra/Makefile | 1 +
drivers/memory/tegra/tegra114-emc.c | 1463 +++++++++++++++++
drivers/memory/tegra/tegra114.c | 193 +++
drivers/soc/tegra/common.c | 5 +-
include/dt-bindings/memory/tegra114-mc.h | 67 +
12 files changed, 2016 insertions(+), 192 deletions(-)
create mode 100644 arch/arm/boot/dts/nvidia/tegra114-peripherals-opp.dtsi
create mode 100644 drivers/memory/tegra/tegra114-emc.c
--
2.51.0
