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| author | Gregor Herburger <gregor.herburger@ew.tq-group.com> | 2025-10-01 14:40:03 +0530 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2025-11-12 19:30:07 +0100 |
| commit | c902835fc6eb7e13dbffc404210eed59293425c8 (patch) | |
| tree | 79632477b2b6a3b78c44e1f83d5db9b163a714f7 /net/unix/garbage.c | |
| parent | f5982a679a16a673a0fc374c1d9d77111cd86740 (diff) | |
can: mcp251xfd: add workaround for errata 5
According to Errata DS80000789E 5 writing IOCON register using one SPI
write command clears LAT0/LAT1.
Errata Fix/Work Around suggests to write registers with single byte write
instructions. However, it seems that every write to the second byte
causes the overwrite of LAT0/LAT1.
Never write byte 2 of IOCON register to avoid clearing of LAT0/LAT1.
Signed-off-by: Gregor Herburger <gregor.herburger@ew.tq-group.com>
Tested-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
Signed-off-by: Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>
Reviewed-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20251001091006.4003841-4-viken.dadhaniya@oss.qualcomm.com
[mkl: add missing MCP251XFD_REG_IOCON_GPIO_MASK]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'net/unix/garbage.c')
0 files changed, 0 insertions, 0 deletions