WhyCan Forum(哇酷开发者社区)

如题，最近有空搞一下啊f1c200s，准备移植一个esp-hosted玩玩是使用spi控制，成功编译出驱动文件，加载驱动文件的时候报如下错误，请教一下看看是什么错误。

# ls
esp32_spi.ko
# modprobe esp32_spi.ko
[  117.876915] esp32_spi: loading out-of-tree module taints kernel.
[  118.101904] sun6i-spi 1c06000.spi: cs135 >= max 4
[  118.106646] esp32_spi: spi_dev_init: Failed to add new SPI device
[  118.551630] esp32_spi: spi_init: Failed Init SPI device

通过初始化函数可以知道是死在了spi_new_device里面

static int spi_dev_init(int spi_clk_mhz)
{
    int status = 0;
    struct spi_board_info esp_board = {{0}};
    struct spi_master *master = NULL;

    strscpy(esp_board.modalias, "esp_spi", sizeof(esp_board.modalias));
    esp_board.mode = SPI_MODE_2;
    esp_board.max_speed_hz = spi_clk_mhz * NUMBER_1M;
    esp_board.bus_num = 1;
    esp_board.chip_select = 135;

    master = spi_busnum_to_master(esp_board.bus_num);
    if (!master) {
        esp_err("Failed to obtain SPI master handle\n");
        return -ENODEV;
    }

    spi_context.esp_spi_dev = spi_new_device(master, &esp_board);

    if (!spi_context.esp_spi_dev) {
        esp_err("Failed to add new SPI device\n");
        return -ENODEV;
    }

    status = spi_setup(spi_context.esp_spi_dev);

    if (status) {
        esp_err("Failed to setup new SPI device");
        return status;
    }

不是太明白这个un6i-spi 1c06000.spi: cs135 >= max 4是啥意思，难道不能定义大于4的cs引脚吗