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realtek: mdio: add comment about c22/command register

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The C22 aka command register is a wild bit mix. Avoid confusion
for reviewers and add a comment.

Signed-off-by: Markus Stockhausen <markus.stockhausen@gmx.de>
Link: https://github.com/openwrt/openwrt/pull/23204
Signed-off-by: Robert Marko <robimarko@gmail.com>
This commit is contained in:
Markus Stockhausen 2026-05-03 18:57:49 +02:00 committed by Robert Marko
parent 36abcb5fce
commit 178bf1d8b4
1 changed files with 1 additions and 0 deletions
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target/linux/realtek/files-6.18/drivers/net/mdio/mdio-realtek-otto.c
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@ -308,6 +308,7 @@ static int rtmdio_run_cmd(struct mii_bus *bus, int cmd, void *smi_access, u32 *v
if (ret)
return ret;
/* Use masks as C22 data and command bits share the same register. */
ret = regmap_update_bits(ctrl->map, ctrl->cfg->cmd_reg,
ctrl->cfg->cmd_mask, cmd | RTMDIO_RUN);
if (ret)