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Tue, 11 Jul 2023 16:30:55 -0700 (PDT) From: Chris Packham To: sjg@chromium.org, u-boot@lists.denx.de Cc: Chris Packham Subject: [PATCH] drivers: rtc: max313xx: provide read8/write8 Date: Wed, 12 Jul 2023 11:30:44 +1200 Message-ID: <20230711233044.3405230-1-judge.packham@gmail.com> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean In some designs the MAX313xx RTC may need calibration to cope with oscillator inaccuracies. Provide read8/write8 ops so that the registers can be accessed. Because the driver covers a range of MAX313xx variants no attempt is made to ensure the register is valid. Signed-off-by: Chris Packham --- drivers/rtc/max313xx.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/rtc/max313xx.c b/drivers/rtc/max313xx.c index 748f3c42c30e..60400235dd0f 100644 --- a/drivers/rtc/max313xx.c +++ b/drivers/rtc/max313xx.c @@ -326,10 +326,22 @@ static int max313xx_reset(struct udevice *dev) return ret; } +static int max313xx_read8(struct udevice *dev, unsigned int reg) +{ + return dm_i2c_reg_read(dev, reg); +} + +static int max313xx_write8(struct udevice *dev, unsigned int reg, int val) +{ + return dm_i2c_reg_write(dev, reg, val); +} + static const struct rtc_ops max3133x_rtc_ops = { .get = max313xx_read_time, .set = max313xx_set_time, .reset = max313xx_reset, + .read8 = max313xx_read8, + .write8 = max313xx_write8, }; static int max313xx_init(struct udevice *dev)