Unverified Commit 939edfaa authored by Alvaro Gamez Machado's avatar Alvaro Gamez Machado Committed by Mark Brown
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spi: xilinx: increase number of retries before declaring stall 



SPI devices using a (relative) slow frequency need a larger time.

For instance, microblaze running at 83.25MHz and performing a
3 bytes transaction using a 10MHz/16 = 625kHz needed this stall
value increased to at least 20. The SPI device is quite slow, but
also is the microblaze, so set this value to 32 to give it even
more margin.

Signed-off-by: default avatarAlvaro Gamez Machado <alvaro.gamez@hazent.com>
Reviewed-by: default avatarRicardo Ribalda <ribalda@chromium.org>
Link: https://patch.msgid.link/20251106134545.31942-1-alvaro.gamez@hazent.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 86d57d9c

drivers/spi/spi-xilinx.c

+1 −1
Original line number Diff line number Diff line
@@ -300,7 +300,7 @@ static int xilinx_spi_txrx_bufs(struct spi_device *spi, struct spi_transfer *t) 


		/* Read out all the data from the Rx FIFO */

		rx_words = n_words;

		stalled = 10;

		stalled = 32;

		while (rx_words) {

			if (rx_words == n_words && !(stalled--) &&

			    !(sr & XSPI_SR_TX_EMPTY_MASK) &&