diff options
| author | Elena Popa <elena.popa@nxp.com> | 2025-05-30 13:40:00 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-10 16:04:40 +0200 |
| commit | ee61aec8529efb8b50260ce731ddaf831bc11d4a (patch) | |
| tree | 52f8c4cc648ca3ff5b4c07ba5aa5ddee72dedae0 | |
| parent | 669e6c723b3213ea1a2b4a4d21f6ba052f846921 (diff) | |
rtc: pcf2127: fix SPI command byte for PCF2131
commit fa78e9b606a472495ef5b6b3d8b45c37f7727f9d upstream.
PCF2131 was not responding to read/write operations using SPI. PCF2131
has a different command byte definition, compared to PCF2127/29. Added
the new command byte definition when PCF2131 is detected.
Fixes: afc505bf9039 ("rtc: pcf2127: add support for PCF2131 RTC")
Cc: stable@vger.kernel.org
Signed-off-by: Elena Popa <elena.popa@nxp.com>
Acked-by: Hugo Villeneuve <hvilleneuve@dimonoff.com>
Link: https://lore.kernel.org/r/20250530104001.957977-1-elena.popa@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/rtc/rtc-pcf2127.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-pcf2127.c b/drivers/rtc/rtc-pcf2127.c index b8cb09a82ea9..fc079b9dcf71 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -1383,6 +1383,11 @@ static int pcf2127_i2c_probe(struct i2c_client *client) variant = &pcf21xx_cfg[type]; } + if (variant->type == PCF2131) { + config.read_flag_mask = 0x0; + config.write_flag_mask = 0x0; + } + config.max_register = variant->max_register, regmap = devm_regmap_init(&client->dev, &pcf2127_i2c_regmap, |