REG_TCFG1
reg = readl(pwm.base + REG_TCFG1);
writel(reg, pwm.base + REG_TCFG1);
reg = readl(our_chip->base + REG_TCFG1);
writel(reg, our_chip->base + REG_TCFG1);
reg = readl(our_chip->base + REG_TCFG1);