ufs-exynos driver configures the sysreg shareability as
cacheable for gs101 so we need to set the dma-coherent
property so the descriptors are also allocated cacheable.
This fixes the UFS stability issues we have seen with
the upstream UFS driver on gs101.
Fixes: 4c65d7054b4c ("arm64: dts: exynos: gs101: Add ufs and ufs-phy dt nodes")
Cc: stable@xxxxxxxxxxxxxxx
Suggested-by: Will McVicker <willmcvicker@xxxxxxxxxx>
Signed-off-by: Peter Griffin <peter.griffin@xxxxxxxxxx>
---
arch/arm64/boot/dts/exynos/google/gs101.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index c5335dd59dfe9fcf8c64d66a466799600f8447b0..cf30128ef004568f01b1c7150c5585ba267d64bc 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -1360,6 +1360,7 @@ ufs_0: ufs@14700000 {
<&cmu_hsi2 CLK_GOUT_HSI2_SYSREG_HSI2_PCLK>;
clock-names = "core_clk", "sclk_unipro_main", "fmp",
"aclk", "pclk", "sysreg";
+ dma-coherent;
freq-table-hz = <0 0>, <0 0>, <0 0>, <0 0>, <0 0>, <0 0>;
pinctrl-0 = <&ufs_rst_n &ufs_refclk_out>;
pinctrl-names = "default";
--
2.49.0.rc1.451.g8f38331e32-goog
