[PATCH 1/3] clk: qcom: gcc-sm8450: Parent the eUSB3 clkref to bi_tcxo

[redducc <sushmit718@gmail.com>]

gcc_eusb3_0_clkref_en gates the XO reference to the eUSB2 PHY, but it
has no parent, so its rate reads as 0. On SM8475 the SNPS eUSB2 PHY
takes this clock as its reference and rejects a 0 Hz rate as
unsupported, so USB doesn't probe.

Parent it to bi_tcxo, as tcsrcc-sm8550 does for its clkref branches.

Fixes: db0c944ee92b ("clk: qcom: Add clock driver for SM8450")
Assisted-by: LLM
Signed-off-by: redducc <sushmit718@gmail.com>
---
 drivers/clk/qcom/gcc-sm8450.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clk/qcom/gcc-sm8450.c b/drivers/clk/qcom/gcc-sm8450.c
index cdae5d9c8aec..56503a45b64e 100644
--- a/drivers/clk/qcom/gcc-sm8450.c
+++ b/drivers/clk/qcom/gcc-sm8450.c
@@ -1500,6 +1500,10 @@ static struct clk_branch gcc_eusb3_0_clkref_en = {
 		.enable_mask = BIT(0),
 		.hw.init = &(struct clk_init_data){
 			.name = "gcc_eusb3_0_clkref_en",
+			.parent_data = &(const struct clk_parent_data){
+				.fw_name = "bi_tcxo",
+			},
+			.num_parents = 1,
 			.ops = &clk_branch2_ops,
 		},
 	},
-- 
2.43.0