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| author | Biju Das <biju.das.jz@bp.renesas.com> | 2025-07-30 17:46:14 +0100 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2025-08-19 14:34:14 +0200 |
| commit | 74f44ad07d1063933c237a7db16f6a4036643d60 (patch) | |
| tree | 3fa3ea7d39e01b2b8c3d2da562499c09f18ff305 /tools/perf/scripts/python/stat-cpi.py | |
| parent | 9c174e4dacee9fb2014a4ffc953d79a5707b77e4 (diff) | |
mmc: tmio: Add 64-bit read/write support for SD_BUF0 in polling mode
As per the RZ/{G2L,G3E} HW manual SD_BUF0 can be accessed by 16/32/64
bits. Most of the data transfer in SD/SDIO/eMMC mode is more than 8 bytes.
During testing it is found that, if the DMA buffer is not aligned to 128
bit it fallback to PIO mode. In such cases, 64-bit access is much more
efficient than the current 16-bit.
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20250730164618.233117-2-biju.das.jz@bp.renesas.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'tools/perf/scripts/python/stat-cpi.py')
0 files changed, 0 insertions, 0 deletions