PCF8523_R_TMR_CLKOUT
err = write_reg(sc, PCF8523_R_TMR_CLKOUT, clkout);
err = write_reg(sc, PCF8523_R_TMR_CLKOUT,
if ((err = write_reg(sc, PCF8523_R_TMR_CLKOUT, clkout)) != 0) {
if ((err = read_reg(sc, PCF8523_R_TMR_CLKOUT, &clkout)) != 0)
if ((err = write_reg(sc, PCF8523_R_TMR_CLKOUT, stdclk)) != 0)