ARM: dts: samsung: exynos3250: specify the SPI FIFO depth

Up to now the SPI alias was used as an index into an array defined in
the SPI driver to determine the SPI FIFO depth. Drop the dependency on
the SPI alias and specify the SPI FIFO depth directly into the SPI node.

exynos3250.dtsi defines the following aliases:
	spi0 = &spi_0;
	spi1 = &spi_1;
spi-s3c64xx.c driver defines the following fifo_lvl_mask for the
"samsung,exynos4210-spi" compatible:
	.fifo_lvl_mask  = { 0x1ff, 0x7F, 0x7F },
Thus spi0 was considered having a 256 byte FIFO depth, and spi1 a 64
byte FIFO depth. Update device tree with these FIFO depths. No
functional change expected.

Signed-off-by: Tudor Ambarus <tudor.ambarus@linaro.org>
Link: https://lore.kernel.org/r/20240216140449.2564625-2-tudor.ambarus@linaro.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

diff --git a/arch/arm/boot/dts/samsung/exynos3250.dtsi b/arch/arm/boot/dts/samsung/exynos3250.dtsi
index 3f1015edab436a5b399f9b2367f6167efc0c494d..b6c3826a942446c35a0a442cc883f5af2f8dadbc 100644 (file)
--- a/arch/arm/boot/dts/samsung/exynos3250.dtsi
+++ b/arch/arm/boot/dts/samsung/exynos3250.dtsi
@@ -826,6 +826,7 @@
                        samsung,spi-src-clk = <0>;
                        pinctrl-names = "default";
                        pinctrl-0 = <&spi0_bus>;
+                       fifo-depth = <256>;
                        status = "disabled";
                };
 
@@ -842,6 +843,7 @@
                        samsung,spi-src-clk = <0>;
                        pinctrl-names = "default";
                        pinctrl-0 = <&spi1_bus>;
+                       fifo-depth = <64>;
                        status = "disabled";
                };