Messages in this thread | | | From | Dmitry Osipenko <> | Subject | [PATCH v4 0/7] tegra20-emc: Identify memory chip by LPDDR configuration | Date | Wed, 6 Oct 2021 02:00:02 +0300 |
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Support memory chip identification by LPDDR2 configuration, which is needed by ASUS Transformer TF101 tablet device that doesn't store RAMCODE in Tegra's NVMEM.
Changelog:
v4: - Moved DDR bindings directory to memory-controllers/, like it was suggested by Krzysztof Kozlowski.
- Converted existing LPDDR2 binding to schema and utilized it, like it was requested by Krzysztof Kozlowski.
- Added Elpida B8132B2PB-6D-F compatible.
- Made code changes that were requested by Krzysztof Kozlowski.
v3: - Corrected sub-node name in tegra20-emc.yaml.
v2: - Added separate binding for standard LPDDR2 properties, like it was suggested by Krzysztof Kozlowski.
- Switched Tegra binding to use new lpddr2-configuration sub-node that contains the standard properties.
- Extended commit message of the "emc: Document new LPDDR2 sub-node" patch, telling how the properties are supposed to be used, which was requested by Krzysztof Kozlowski.
- Added new common helpers for parsing LPDDR2 properties and made tegra20-emc driver to use these helpers.
Dmitry Osipenko (7): dt-bindings: Relocate DDR bindings dt-bindings: memory: lpddr2: Convert to schema dt-bindings: memory: lpddr2: Add revision-id properties dt-bindings: memory: lpddr2: Document Elpida B8132B2PB-6D-F dt-bindings: memory: tegra20: emc: Document new LPDDR2 sub-node memory: Add LPDDR2 configuration helpers memory: tegra20-emc: Support matching timings by LPDDR2 configuration
.../devicetree/bindings/ddr/lpddr2.txt | 102 --------- .../memory-controllers/ddr/jedec,lpddr2.yaml | 208 ++++++++++++++++++ .../ddr/lpddr2-timings.txt | 0 .../ddr/lpddr3-timings.txt | 0 .../{ => memory-controllers}/ddr/lpddr3.txt | 0 .../nvidia,tegra20-emc.yaml | 23 +- drivers/memory/jedec_ddr.h | 46 ++++ drivers/memory/jedec_ddr_data.c | 41 ++++ drivers/memory/of_memory.c | 88 ++++++++ drivers/memory/of_memory.h | 9 + drivers/memory/tegra/Kconfig | 1 + drivers/memory/tegra/tegra20-emc.c | 199 +++++++++++++++-- 12 files changed, 599 insertions(+), 118 deletions(-) delete mode 100644 Documentation/devicetree/bindings/ddr/lpddr2.txt create mode 100644 Documentation/devicetree/bindings/memory-controllers/ddr/jedec,lpddr2.yaml rename Documentation/devicetree/bindings/{ => memory-controllers}/ddr/lpddr2-timings.txt (100%) rename Documentation/devicetree/bindings/{ => memory-controllers}/ddr/lpddr3-timings.txt (100%) rename Documentation/devicetree/bindings/{ => memory-controllers}/ddr/lpddr3.txt (100%)
-- 2.32.0
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