6.16-stable review patch. If anyone has any objections, please let me know.
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From: Peter Griffin peter.griffin@linaro.org
commit 4292564c71cffd8094abcc52dd4840870d05cd30 upstream.
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@vger.kernel.org Suggested-by: Will McVicker willmcvicker@google.com Signed-off-by: Peter Griffin peter.griffin@linaro.org Tested-by: Will McVicker willmcvicker@google.com Tested-by: André Draszik andre.draszik@linaro.org Reviewed-by: André Draszik andre.draszik@linaro.org Link: https://lore.kernel.org/r/20250314-ufs-dma-coherent-v1-1-bdf9f9be2919@linaro... Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/arm64/boot/dts/exynos/google/gs101.dtsi | 1 + 1 file changed, 1 insertion(+)
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi +++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi @@ -1371,6 +1371,7 @@ <&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";