Merge branch 'bugfix/sdio_slave_buffer_size_limit_v5.2' into 'release/v5.2'

fix(sdio_slave): align buffer size checks with descriptor limits (v5.2)

See merge request espressif/esp-idf!49903

docs/en/api-reference/peripherals/sdio_slave.rst

@@ -223,7 +223,7 @@ Each time the slave has data to send, it raises an interrupt, and the host reque
 
   To avoid overhead from copying data, the driver itself does not have any buffer inside. Namely, the DMA takes data directly from the buffer provided by the application. The application should not touch the buffer until the sending is finished, so as to ensure that the data is transferred correctly.
 
-The sending mode can be set in the ``sending_mode`` member of ``sdio_slave_config_t``, and the buffer numbers can be set in the ``send_queue_size``. All the buffers are restricted to be no larger than 4092 bytes. Though in the stream mode, several buffers can be sent in one transfer, each buffer is still counted as one in the queue.
+The sending mode can be set in the ``sending_mode`` member of ``sdio_slave_config_t``, and the buffer numbers can be set in the ``send_queue_size``. Each buffer is restricted by the maximum size supported by a single SDIO slave DMA descriptor, which is chip-dependent. Though in the stream mode, several buffers can be sent in one transfer, each buffer is still counted as one in the queue.
 
 The application can call ``sdio_slave_transmit`` to send packets. In this case, the function returns when the transfer is successfully done, so the queue is not fully used. When higher efficiency is required, the application can use the following functions instead:
 

docs/zh_CN/api-reference/peripherals/sdio_slave.rst

@@ -223,7 +223,7 @@ SDIO 从机驱动程序的相关术语如下：
 
   为减少复制数据的开销，驱动程序本身没有内部缓冲区，DMA 直接从应用程序提供的缓冲区中获取数据。发送完成前，应用程序不应该访问缓冲区，以确保数据传输的正确性。
 
-结构体 ``sdio_slave_config_t`` 中的 ``sending_mode`` 可以设置发送模式，``send_queue_size`` 可以设置缓冲区数量。缓冲区大小均限制在 4092 字节内。尽管在流模式下，一次传输可以发送多个缓冲区，但每个缓冲区在队列中仍然计为一个。
+结构体 ``sdio_slave_config_t`` 中的 ``sending_mode`` 可以设置发送模式，``send_queue_size`` 可以设置缓冲区数量。每个缓冲区的大小都受单个 SDIO slave DMA 描述符可支持的最大长度限制，且该限制因芯片而异。尽管在流模式下，一次传输可以发送多个缓冲区，但每个缓冲区在队列中仍然计为一个。
 
 应用程序可以调用 ``sdio_slave_transmit`` 函数发送数据包。此时，函数在传输完成后返回，因此队列并未完全占用。若需要更高效率，应用程序可以改用以下函数：