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: 161b7c401f4b ("clk: qcom: Add Global Clock controller (GCC) driver for X1E80100")
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Signed-off-by: Jagadeesh Kona <jagadeesh.kona@oss.qualcomm.com>
Reviewed-by: Taniya Das <taniya.das@oss.qualcomm.com>
Reviewed-by: Abel 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: Bjorn Andersson <andersson@kernel.org>

diff --git a/drivers/clk/qcom/gcc-x1e80100.c b/drivers/clk/qcom/gcc-x1e80100.c
index 74afd12c158c01c121d9aecd56e65c0c302d7cd0..73a2a5112623e5190f41129af7fd76a86603557b 100644 (file)
--- a/drivers/clk/qcom/gcc-x1e80100.c
+++ b/drivers/clk/qcom/gcc-x1e80100.c
@@ -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);