linux-kernel - [PATCH] clk: qcom: gcc-msm8953: fix stuck gcc_usb30_master

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Message-ID: <20231002170021.192740-1-trabarni@gmail.com>
Date:   Mon,  2 Oct 2023 19:00:21 +0200
From:   Barnabás Czémán <trabarni@...il.com>
To:     Bjorn Andersson <andersson@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Barnabás Czémán <trabarni@...il.com>
Subject: [PATCH] clk: qcom: gcc-msm8953: fix stuck gcc_usb30_master_clk

According to downstream dwc3-msm source this clock has FSM dependency on
gcc_pcnoc_usb30_clk so enabling it would fail if latter isn't enabled.
This patch add works around this issue by changing parent of
gcc_usb30_master_clk to gcc_pcnoc_usb30_clk. This is acceptable because
both clocks have same parent and are branches/gates.

Signed-off-by: Barnabás Czémán <trabarni@...il.com>
---
 drivers/clk/qcom/gcc-msm8953.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/qcom/gcc-msm8953.c b/drivers/clk/qcom/gcc-msm8953.c
index 3e5a8cb14d4d..20639340e8a6 100644
--- a/drivers/clk/qcom/gcc-msm8953.c
+++ b/drivers/clk/qcom/gcc-msm8953.c
@@ -3645,7 +3645,7 @@ static struct clk_branch gcc_usb30_master_clk = {
 		.hw.init = &(struct clk_init_data) {
 			.name = "gcc_usb30_master_clk",
 			.parent_hws = (const struct clk_hw*[]){
-				&usb30_master_clk_src.clkr.hw,
+				&gcc_pcnoc_usb3_axi_clk.clkr.hw,
 			},
 			.num_parents = 1,
 			.ops = &clk_branch2_ops,
-- 
2.42.0