linux-kernel - [PATCH v3 3/5] clk: qcom: ipq5332: Register gcc_qdss_tsctr_clk

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Message-ID: <20240722055539.2594434-4-quic_varada@quicinc.com>
Date: Mon, 22 Jul 2024 11:25:37 +0530
From: Varadarajan Narayanan <quic_varada@...cinc.com>
To: <andersson@...nel.org>, <mturquette@...libre.com>, <sboyd@...nel.org>,
        <robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>,
        <gregkh@...uxfoundation.org>, <konrad.dybcio@...aro.org>,
        <djakov@...nel.org>, <quic_wcheng@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-usb@...r.kernel.org>, <linux-pm@...r.kernel.org>
CC: Varadarajan Narayanan <quic_varada@...cinc.com>
Subject: [PATCH v3 3/5] clk: qcom: ipq5332: Register gcc_qdss_tsctr_clk_src

gcc_qdss_tsctr_clk_src (enabled in the boot loaders and dependent
on gpll4_main) was not registered as one of the ipq5332 clocks.
Hence clk_disable_unused() disabled 'gpll4_main' assuming there
were no consumers for 'gpll4_main' resulting in system freeze or
reboots.

After registering gcc_qdss_tsctr_clk_src, CLK_IGNORE_UNUSED can
be removed from gpll4_main.

Signed-off-by: Varadarajan Narayanan <quic_varada@...cinc.com>
---
 drivers/clk/qcom/gcc-ipq5332.c | 12 +-----------
 1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c
index f98591148a97..237b6a766179 100644
--- a/drivers/clk/qcom/gcc-ipq5332.c
+++ b/drivers/clk/qcom/gcc-ipq5332.c
@@ -126,17 +126,6 @@ static struct clk_alpha_pll gpll4_main = {
 			.parent_data = &gcc_parent_data_xo,
 			.num_parents = 1,
 			.ops = &clk_alpha_pll_stromer_ops,
-			/*
-			 * There are no consumers for this GPLL in kernel yet,
-			 * (will be added soon), so the clock framework
-			 * disables this source. But some of the clocks
-			 * initialized by boot loaders uses this source. So we
-			 * need to keep this clock ON. Add the
-			 * CLK_IGNORE_UNUSED flag so the clock will not be
-			 * disabled. Once the consumer in kernel is added, we
-			 * can get rid of this flag.
-			 */
-			.flags = CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -3388,6 +3377,7 @@ static struct clk_regmap *gcc_ipq5332_clocks[] = {
 	[GCC_QDSS_DAP_DIV_CLK_SRC] = &gcc_qdss_dap_div_clk_src.clkr,
 	[GCC_QDSS_ETR_USB_CLK] = &gcc_qdss_etr_usb_clk.clkr,
 	[GCC_QDSS_EUD_AT_CLK] = &gcc_qdss_eud_at_clk.clkr,
+	[GCC_QDSS_TSCTR_CLK_SRC] = &gcc_qdss_tsctr_clk_src.clkr,
 	[GCC_QPIC_AHB_CLK] = &gcc_qpic_ahb_clk.clkr,
 	[GCC_QPIC_CLK] = &gcc_qpic_clk.clkr,
 	[GCC_QPIC_IO_MACRO_CLK] = &gcc_qpic_io_macro_clk.clkr,
-- 
2.34.1