diff options
| author | Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com> | 2025-09-23 17:18:26 +0300 |
|---|---|---|
| committer | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2025-09-23 21:14:53 +0200 |
| commit | dde9a38195b0c268ff55d3a8aa62faefd0e988c8 (patch) | |
| tree | c4d274c9a80ec5de20e4354a2cb48dd661664f45 | |
| parent | 2f6aa0acdc5d09d1fee3049593c81affa9c58838 (diff) | |
i2c: riic: Allow setting frequencies lower than 50KHz
The MR1.CKS field is 3 bits wide and all the possible values (from 0 to
7) are valid. This is true for all the SoCs currently integrated in
upstream Linux. Take into account CKS=7 which allows setting bus
frequencies lower than 50KHz. This may be useful at least for debugging.
Fixes: d982d6651419 ("i2c: riic: remove clock and frequency restrictions")
Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
| -rw-r--r-- | drivers/i2c/busses/i2c-riic.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 9c164a4b9bb9..b0ee9ac45a97 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -386,7 +386,7 @@ static int riic_init_hw(struct riic_dev *riic) */ total_ticks = DIV_ROUND_UP(rate, t->bus_freq_hz ?: 1); - for (cks = 0; cks < 7; cks++) { + for (cks = 0; cks <= 7; cks++) { /* * 60% low time must be less than BRL + 2 + 1 * BRL max register value is 0x1F. |