linux-kernel - [PATCH v5 08/15] clk: qcom: gcc-ipq806x: add unusued flag for critical clock

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Date:   Thu, 24 Feb 2022 17:48:24 +0100
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Taniya Das <tdas@...eaurora.org>,
        Ansuel Smith <ansuelsmth@...il.com>,
        linux-arm-msm@...r.kernel.org, linux-clk@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v5 08/15] clk: qcom: gcc-ipq806x: add unusued flag for critical clock

Some clocks are used by other devices present on the SoC. For example
the gsbi4_h_clk is used by RPM and is if disabled cause the RPM to
reject any regulator change command. These clock should never be
disabled.

Signed-off-by: Ansuel Smith <ansuelsmth@...il.com>
---
 drivers/clk/qcom/gcc-ipq806x.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/drivers/clk/qcom/gcc-ipq806x.c b/drivers/clk/qcom/gcc-ipq806x.c
index 0a3ba3480de8..49a4eae4161f 100644
--- a/drivers/clk/qcom/gcc-ipq806x.c
+++ b/drivers/clk/qcom/gcc-ipq806x.c
@@ -805,7 +805,7 @@ static struct clk_rcg gsbi4_qup_src = {
 			.parent_data = gcc_pxo_pll8,
 			.num_parents = ARRAY_SIZE(gcc_pxo_pll8),
 			.ops = &clk_rcg_ops,
-			.flags = CLK_SET_PARENT_GATE,
+			.flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -823,7 +823,7 @@ static struct clk_branch gsbi4_qup_clk = {
 			},
 			.num_parents = 1,
 			.ops = &clk_branch_ops,
-			.flags = CLK_SET_RATE_PARENT,
+			.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -907,7 +907,7 @@ static struct clk_rcg gsbi6_qup_src = {
 			.parent_data = gcc_pxo_pll8,
 			.num_parents = ARRAY_SIZE(gcc_pxo_pll8),
 			.ops = &clk_rcg_ops,
-			.flags = CLK_SET_PARENT_GATE,
+			.flags = CLK_SET_PARENT_GATE | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -976,7 +976,7 @@ static struct clk_branch gsbi7_qup_clk = {
 			},
 			.num_parents = 1,
 			.ops = &clk_branch_ops,
-			.flags = CLK_SET_RATE_PARENT,
+			.flags = CLK_SET_RATE_PARENT | CLK_IGNORE_UNUSED,
 		},
 	},
 };
@@ -1022,6 +1022,7 @@ static struct clk_branch gsbi4_h_clk = {
 		.hw.init = &(struct clk_init_data){
 			.name = "gsbi4_h_clk",
 			.ops = &clk_branch_ops,
+			.flags = CLK_IGNORE_UNUSED,
 		},
 	},
 };
-- 
2.34.1