TCON_CH1_SCLK2_MUX_SHIFT
reg = readl(tclk->reg) >> TCON_CH1_SCLK2_MUX_SHIFT;
reg &= ~(TCON_CH1_SCLK2_MUX_MASK << TCON_CH1_SCLK2_MUX_SHIFT);
reg |= index << TCON_CH1_SCLK2_MUX_SHIFT;