spi-rockchip: Fix register out of bounds access

Do not write native chip select stuff for GPIO chip selects.
GPIOs can be numbered much higher than native CS.
Also, it makes no sense.

Signed-off-by: Luis de Arquer <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Mark Brown <[email protected]>

Author: Luis de Arquer

drivers/spi/spi-rockchip.c

@@ -547,7 +547,7 @@ static int rockchip_spi_config(struct rockchip_spi *rs,
 	cr0 |= (spi->mode & 0x3U) << CR0_SCPH_OFFSET;
 	if (spi->mode & SPI_LSB_FIRST)
 		cr0 |= CR0_FBM_LSB << CR0_FBM_OFFSET;
-	if (spi->mode & SPI_CS_HIGH)
+	if ((spi->mode & SPI_CS_HIGH) && !(spi_get_csgpiod(spi, 0)))
 		cr0 |= BIT(spi_get_chipselect(spi, 0)) << CR0_SOI_OFFSET;
 
 	if (xfer->rx_buf && xfer->tx_buf)