Commit 05566ebc authored by Jagadeesh Kona's avatar Jagadeesh Kona Committed by Bjorn Andersson
Browse files

clk: qcom: gcc-x1e80100: Keep GCC USB QTB clock always ON 



In Hamoa, SMMU invalidation requires the GCC_AGGRE_USB_NOC_AXI_CLK
to be on for the USB QTB to be functional. This is currently
explicitly enabled by the DWC3 glue driver, so an invalidation
happening while the USB controller is suspended will fault.

Solve this by voting for the GCC MMU USB QTB clock.

Fixes: 161b7c40 ("clk: qcom: Add Global Clock controller (GCC) driver for X1E80100")
Reviewed-by: default avatarKonrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: default avatarDmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: default avatarJagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>
Reviewed-by: default avatarTaniya Das <taniya.das@oss.qualcomm.com>
Reviewed-by: default avatarAbel Vesa <abel.vesa@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260327-hamoa-usb-qtb-clk-always-on-v2-1-7d8a406e650f@oss.qualcomm.com


Signed-off-by: default avatarBjorn Andersson <andersson@kernel.org>
parent 87df31ea

drivers/clk/qcom/gcc-x1e80100.c

+1 −0
Original line number Diff line number Diff line
@@ -7480,6 +7480,7 @@ static int gcc_x1e80100_probe(struct platform_device *pdev) 
	qcom_branch_set_clk_en(regmap, 0x32004); /* GCC_VIDEO_AHB_CLK */

	qcom_branch_set_clk_en(regmap, 0x32030); /* GCC_VIDEO_XO_CLK */

	qcom_branch_set_clk_en(regmap, 0x71004); /* GCC_GPU_CFG_AHB_CLK */

	qcom_branch_set_clk_en(regmap, 0x7d01c); /* GCC_HLOS1_VOTE_AGGRE_NOC_MMU_USB_QTB_CLK */



	/* Clear GDSC_SLEEP_ENA_VOTE to stop votes being auto-removed in sleep. */

	regmap_write(regmap, 0x52224, 0x0);