From: Tudor Ambarus Date: Fri, 16 Feb 2024 07:05:48 +0000 (+0000) Subject: spi: s3c64xx: retrieve the FIFO depth from the device tree X-Git-Tag: v6.9-rc1~142^2~12 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=414d7b8c9147db7dc34c0e2bae2e2361b922dc07;p=thirdparty%2Fkernel%2Flinux.git spi: s3c64xx: retrieve the FIFO depth from the device tree There are SoCs that configure different FIFO depths for their instances of the SPI IP. See the fifo_lvl_mask defined for exynos4_spi_port_config for example: .fifo_lvl_mask = { 0x1ff, 0x7F, 0x7F }, The first instance of the IP is configured with 256 bytes FIFOs, whereas the last two are configured with 64 bytes FIFOs. Instead of mangling with the .fifo_lvl_mask and its dependency of the DT alias ID, allow such SoCs to determine the FIFO depth via the ``fifo-depth`` DT property. Signed-off-by: Tudor Ambarus Link: https://msgid.link/r/20240216070555.2483977-6-tudor.ambarus@linaro.org Signed-off-by: Mark Brown --- diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c index 72572e23cde52..b1c63f75021dd 100644 --- a/drivers/spi/spi-s3c64xx.c +++ b/drivers/spi/spi-s3c64xx.c @@ -1263,7 +1263,9 @@ static int s3c64xx_spi_probe(struct platform_device *pdev) sdd->port_id = pdev->id; } - sdd->fifo_depth = FIFO_DEPTH(sdd); + if (of_property_read_u32(pdev->dev.of_node, "fifo-depth", + &sdd->fifo_depth)) + sdd->fifo_depth = FIFO_DEPTH(sdd); s3c64xx_spi_set_fifomask(sdd);