Linux内核的of_clk_init中的__clk_of_table符号是什么

问题描述

我正在使用Linux内核3.10，该内核具有功能of_clk_init，如下所示

I was going through linux kernel 3.10, which has a function of_clk_init which is as below

void __init of_clk_init(const struct of_device_id *matches)
{
    struct device_node *np;

    if (!matches)
        matches = __clk_of_table;

    for_each_matching_node(np, matches) {
        const struct of_device_id *match = of_match_node(matches, np);
        of_clk_init_cb_t clk_init_cb = match->data;
        clk_init_cb(np);
    }
}

当我寻找符号__clk_of_table时，我没有找到任何参考，但是我非常确定__clk_of_table与linux设备树模型有关:

when i look for the symbol __clk_of_table i did not find any reference but i am very sure that __clk_of_table has got something to do with the linux device tree model is that ??

推荐答案

是的，__clk_of_table反映了Blob中为时钟提供struct of_device_id的特殊部分.

Yes, __clk_of_table reflects the special section in the blob that provides struct of_device_id for clocks.

在 include/linux/clk-provider.h

extern struct of_device_id __clk_of_table;

#define CLK_OF_DECLARE(name, compat, fn) OF_DECLARE_1(clk, name, compat, fn)

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