ASPEED_I2C_BYTE_BUF_REG
value = readl(bus->base + ASPEED_I2C_BYTE_BUF_REG) >> 8;
writel(value, bus->base + ASPEED_I2C_BYTE_BUF_REG);
writel(value, bus->base + ASPEED_I2C_BYTE_BUF_REG);
writel(slave_addr, bus->base + ASPEED_I2C_BYTE_BUF_REG);
bus->base + ASPEED_I2C_BYTE_BUF_REG);
recv_byte = readl(bus->base + ASPEED_I2C_BYTE_BUF_REG) >> 8;