diff options
| author | Judith Mendez <jm@ti.com> | 2026-02-23 17:37:30 -0600 |
|---|---|---|
| committer | Vignesh Raghavendra <vigneshr@ti.com> | 2026-03-27 07:38:35 +0530 |
| commit | 02532ba56362907b6aca3e8289c4a9247ef83325 (patch) | |
| tree | 4647d9126bac0726bcb1373f69d3b345ed920768 /rust/kernel/interop/git@git.tavy.me:linux-stable.git | |
| parent | 6d4441be969bea89bb9702781f5dfb3a8f2a02a4 (diff) | |
arm64: dts: ti: k3-am62l3-evm: Disable MMC1 internal pulls on data pins
AM62L EVM has external 47K pullups on MMC1 DAT1-DAT3 pins [0].
Disable internal pullups on DAT1-DAT3 so that each line has a
single pullup source:
- with both pullups enabled, the effective parallel resistance on
DAT1-3 (~24.2K) creates a ~2x mismatch vs DAT0 (47K external
only). Removing internal pullups results in DAT1-3 matching DAT0 at 47K
- 47K external alone is within the recommended range for 1.8V
signaling (10K min, 50K recommended max)
- both internal and external pullups enabled equals unnecessary power
consumption
[0] https://www.ti.com/lit/zip/SPRCAL6
Fixes: 00fb4c73b67d ("arm64: dts: ti: k3-am62l: add initial reference board file")
Signed-off-by: Judith Mendez <jm@ti.com>
Reviewed-by: Moteen Shah <m-shah@ti.com>
Link: https://patch.msgid.link/20260223233731.2690472-3-jm@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Diffstat (limited to 'rust/kernel/interop/git@git.tavy.me:linux-stable.git')
0 files changed, 0 insertions, 0 deletions
