linux-kernel - [PATCH] clk: qcom: ipq5332: mark GPLL4 as critical temporarily

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Message-ID: <20230130120959.9457-1-quic_kathirav@quicinc.com>
Date:   Mon, 30 Jan 2023 17:39:59 +0530
From:   Kathiravan Thirumoorthy <quic_kathirav@...cinc.com>
To:     <andersson@...nel.org>, <agross@...nel.org>,
        <konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Kathiravan T <quic_kathirav@...cinc.com>
Subject: [PATCH] clk: qcom: ipq5332: mark GPLL4 as critical temporarily

From: Kathiravan T <quic_kathirav@...cinc.com>

Clock framework disables the GPLL4 source since there are no active users
for this source currently. Some of the clocks initialized by the
bootloaders uses the GPLL4 as the source. Due to this, when the GPLL4 is
disabled by the clock framework, system is going for the reboot.

To avoid this, mark the GPLL4 as CRITICAL so that clock framework
doesn't disable it. Once the users of this source is enabled, we can get
rid of this flag.

Signed-off-by: Kathiravan T <quic_kathirav@...cinc.com>
---
Note: This patch depends on the IPQ5332 baseport series
https://lore.kernel.org/linux-arm-msm/20230130114702.20606-1-quic_kathirav@quicinc.com/T/#t

 drivers/clk/qcom/gcc-ipq5332.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c
index a8ce618bb81b..6159d0e1e43f 100644
--- a/drivers/clk/qcom/gcc-ipq5332.c
+++ b/drivers/clk/qcom/gcc-ipq5332.c
@@ -127,6 +127,7 @@ static struct clk_alpha_pll gpll4_main = {
 			.parent_data = &gcc_parent_data_xo,
 			.num_parents = 1,
 			.ops = &clk_alpha_pll_stromer_ops,
+			.flags = CLK_IS_CRITICAL,
 		},
 	},
 };
-- 
2.17.1