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| author | Albert Yang <yangzh0906@thundersoft.com> | 2026-01-23 12:53:39 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2026-02-23 14:06:55 +0300 |
| commit | 695824f45629dfad8834f432d78f8b60fdcbe3d8 (patch) | |
| tree | e18149086bb67cc2cfae92b1136f0bb38eafd464 /include | |
| parent | ef7eb1a7094dbb5042ea1bed34193c1415fb9844 (diff) | |
| download | linux-695824f45629dfad8834f432d78f8b60fdcbe3d8.tar.xz | |
mmc: sdhci: add Black Sesame Technologies BST C1200 controller driver
Add SDHCI controller driver for Black Sesame Technologies C1200 SoC.
This driver supports the DWCMSHC SDHCI controller with BST-specific
enhancements including:
- Custom clock management and tuning
- Power management support
- BST-specific register configurations
- Support for eMMC and SD card interfaces
- Hardware limitation workaround for 32-bit DMA addressing
The driver addresses specific hardware constraints where:
- System memory uses 64-bit bus, eMMC controller uses 32-bit bus
- eMMC controller cannot access memory through SMMU due to hardware bug
- All system DRAM is configured outside 4GB boundary (ZONE_DMA32)
- Uses SRAM-based bounce buffer within 32-bit address space
Signed-off-by: Ge Gordon <gordon.ge@bst.ai>
Signed-off-by: Albert Yang <yangzh0906@thundersoft.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions