Messages in this thread | | | From | Po-Kai Chi <> | Subject | [PATCH v2] memory: mediatek: add DRAM controller driver | Date | Fri, 16 Apr 2021 17:32:14 +0800 |
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These patch series introduces the MediaTek DRAM controller driver (DRAMC) on MT6779 SoC, and enables to be built as a module by default for the ARM64 builds.
MediaTek DRAMC driver provides cross-platform features as below: - API provided to other kernel modules for querying DRAM type, rank count, rank size, channel count and mode register settings. - Sysfs interface used to pass DRAM mode register settings and current DRAM data rate to user-space for MediaTek ecosystem.
The API user includes MediaTek External Memory Interface (EMI) and DVFS Resource Control (DVFSRC), which will be sent to mainline later.
Changes since v1: - add prefix to vendor properties in device tree, dt-binding and drivers - fix dt-binding check fail
Po-Kai Chi (4): dt-bindings: memory: Add binding for MediaTek DRAM Controller memory: mediatek: add DRAM controller driver arm64: dts: add DRAMC node for MT6779 arm64: defconfig: Enable MediaTek DRAMC common driver
.../memory-controllers/mediatek,dramc.yaml | 162 ++++ arch/arm64/boot/dts/mediatek/mt6779-evb.dts | 9 + arch/arm64/boot/dts/mediatek/mt6779.dtsi | 18 + arch/arm64/configs/defconfig | 1 + drivers/memory/Kconfig | 1 + drivers/memory/Makefile | 1 + drivers/memory/mediatek/Kconfig | 9 + drivers/memory/mediatek/Makefile | 3 + drivers/memory/mediatek/mtk-dramc.c | 711 ++++++++++++++++++ include/memory/mediatek/dramc.h | 18 + 10 files changed, 933 insertions(+) create mode 100644 Documentation/devicetree/bindings/memory-controllers/mediatek,dramc.yaml create mode 100644 drivers/memory/mediatek/Kconfig create mode 100644 drivers/memory/mediatek/Makefile create mode 100644 drivers/memory/mediatek/mtk-dramc.c create mode 100644 include/memory/mediatek/dramc.h
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