linux-kernel - [PATCH V6 5/9] clk: qcom: ipq5332: mark GPLL4 as ignore unused temporarily

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20230307062232.4889-6-quic_kathirav@quicinc.com>
Date:   Tue, 7 Mar 2023 11:52:28 +0530
From:   Kathiravan T <quic_kathirav@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <catalin.marinas@....com>, <will@...nel.org>,
        <arnd@...db.de>, <dmitry.baryshkov@...aro.org>,
        <geert+renesas@...der.be>, <nfraprado@...labora.com>,
        <broonie@...nel.org>, <rafal@...ecki.pl>, <robimarko@...il.com>,
        <quic_gurus@...cinc.com>, <linux-arm-msm@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
CC:     Kathiravan T <quic_kathirav@...cinc.com>
Subject: [PATCH V6 5/9] clk: qcom: ipq5332: mark GPLL4 as ignore unused temporarily

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 ignore unused 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>
---
Changes in V6:
	- Newly added this patch in V6, to keep the dependent patches
	  together

 drivers/clk/qcom/gcc-ipq5332.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/drivers/clk/qcom/gcc-ipq5332.c b/drivers/clk/qcom/gcc-ipq5332.c
index 9e4baea33937..bdb4a0a11d07 100644
--- a/drivers/clk/qcom/gcc-ipq5332.c
+++ b/drivers/clk/qcom/gcc-ipq5332.c
@@ -128,6 +128,17 @@ 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,
 		},
 	},
 };
-- 
2.17.1