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| author | Elena Popa <elena.popa@nxp.com> | 2025-05-30 13:40:00 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2025-06-24 17:04:42 +0300 |
| commit | fa78e9b606a472495ef5b6b3d8b45c37f7727f9d (patch) | |
| tree | 9494ef6d768687a82ac91cbd34832bb5f383479f | |
| parent | 00a39d8652ff9088de07a6fe6e9e1893452fe0dd (diff) | |
| download | linux-fa78e9b606a472495ef5b6b3d8b45c37f7727f9d.tar.xz | |
rtc: pcf2127: fix SPI command byte for PCF2131
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>
| -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 31c7dca8f469..2c7917bc2a31 100644 --- a/drivers/rtc/rtc-pcf2127.c +++ b/drivers/rtc/rtc-pcf2127.c @@ -1538,6 +1538,11 @@ static int pcf2127_spi_probe(struct spi_device *spi) 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_spi(spi, &config); |