Exynos AHCI (SATA) controller has only one port for SATA device. According to AHCI driver bindings (ata/ahci-platform.txt), if the bootloader doesn't program the PORTS_IMPL register to proper value, the available port map has to be provided by 'ports-implemented' device tree property. This fixes SATA operation on Exynos5250-based boards since Linux v4.5. Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx> --- arch/arm/boot/dts/exynos5250.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi index d5e0392b409e..30f6f5c6bbcb 100644 --- a/arch/arm/boot/dts/exynos5250.dtsi +++ b/arch/arm/boot/dts/exynos5250.dtsi @@ -346,6 +346,7 @@ clock-names = "sata", "sclk_sata"; phys = <&sata_phy>; phy-names = "sata-phy"; + ports-implemented = <0x1>; status = "disabled"; }; -- 2.17.1
