clk: qcom: ipq5018: add 24MHz rate for USB UTMI clock

The USB UTMI reference clock must operate at 24 MHz, as recommended
by the hardware team, for reliable USB operation.

Validation showed that USB 3.2 hub enumeration with USB 2.0 devices
fails when the UTMI reference clock is not configured to the required
24 MHz rate. Configuring the UTMI reference clock to 24 MHz to resolve
the enumeration failure and ensure successful device detection.

Cc: stable@vger.kernel.org
Fixes: e3fdbef1bab8 ("clk: qcom: Add Global Clock controller (GCC) driver for IPQ5018")
Signed-off-by: Kathiravan Thirumoorthy <kathiravan.thirumoorthy@oss.qualcomm.com>
Reviewed-by: Abel Vesa <abel.vesa@oss.qualcomm.com>
Link: https://patch.msgid.link/20260921-ipq_clk_changes-v1-1-d242e3d49648@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/clk/qcom/gcc-ipq5018.c b/drivers/clk/qcom/gcc-ipq5018.c
index 46da652956fb..add6a53d4df5 100644
--- a/drivers/clk/qcom/gcc-ipq5018.c
+++ b/drivers/clk/qcom/gcc-ipq5018.c
@@ -1269,6 +1269,7 @@ static struct clk_rcg2 usb0_master_clk_src = {
 };
 
 static const struct freq_tbl ftbl_usb0_mock_utmi_clk_src[] = {
+	F(24000000, P_XO, 1, 0, 0),
 	F(60000000, P_GPLL4, 10, 1, 2),
 	{ }
 };